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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191,327 | The effect of winter stress on Ilex aquifolium L. previously fumigated with ozone | Ranford, J; Reiling, K | 2,007 | European Holly (Ilex aquifolium) received either charcoal-filtered air (CFA) or CFA with 70 nl l(-1) ozone added for 7 h day(-1) over a 28 day period. Plants were then transferred into cooling incubators for hardening (4 degrees C day/2 degrees C night; day length 12 h) for 7 days and then to the frosting stage (2 degr... | 0 |
92,844 | Effects of air pollution on asthma hospitalization rates in different age groups in Hong Kong | Ko, FWS; Tam, W; Wong, TW; Lai, CKW; Wong, GWK; Leung, TF; Ng, SSS; Hui, DSC | 2,007 | AIMS: To assess the relationship between levels of ambient air pollutants and hospitalization rates for asthma in Hong Kong (HK). METHODS: This is a retrospective ecological study. Data of daily emergency hospital admissions to 15 major hospitals in HK for asthma and indices of air pollutants [sulphur dioxide (SO(2)), ... | 1 |
191,505 | Lipid acyl-hydrolase in leaves of different kidney bean (Phaseolus vulgaris L.) cultivars: Purification and characterization of a kidney bean lipid acyl-hydrolase, and foliar lipid changes in the cultivars with ozone exposure | Sakaki, T; Kato, T; Saji, H | 2,007 | Levels of acyl-hydrolase (EC 3.1.1.26) activity toward monogalactosyldiacylglycerol (MGDG) varied greatly not only in leaves of 12 plant species but also in those of 11 cultivars of kidney bean (Phaseolus vulgaris L.). The activity was detected in soluble and particulate fractions from kidney bean leaves, and the speci... | 0 |
191,244 | Belowground competition and the response of developing forest communities to atmospheric CO2 and O-3 | Zak, DR; Holmes, WE; Pregitzer, KS; King, JS; Ellsworth, DS; Kubiske, ME | 2,007 | As human activity continues to increase CO2 and O-3, broad expanses of north temperate forests will be simultaneously exposed to elevated concentrations of these trace gases. Although both CO2 and O-3 are potent modifiers of plant growth, we do not understand the extent to which they alter competition for limiting soil... | 0 |
90,207 | Review of the national ambient air quality standards for ozone: Policy assessment of scientific and technical information: OAQPS staff paper | null | 2,007 | null | 1 |
651,820 | Differential regulation of hyaluronan metabolism in the epidermal and dermal compartments of human skin by UVB irradiation | Averbeck, M; Gebhardt, CA; Voigt, S; Beilharz, S; Anderegg, U; Termeer, CC; Sleeman, JP; Simon, JC | 2,007 | Hyaluronan (HA), a major component of the cutaneous extracellular-matrix, is involved in tissue repair. Human skin is exposed to and damaged by UVB-irradiation. Here, we investigate the regulation of HA metabolism in human skin during acute UVB-induced inflammation. Expression of HA synthesizing (HAS) and degrading enz... | 0 |
596,382 | Cutaneous MMPs are differently modulated by environmental stressors in old and young mice | Fortino, V; Maioli, E; Torricelli, C; Davis, P; Valacchi, G | 2,007 | Skin is frequently exposed to pro-oxidative insults such as UV light, ozone (O(3)) and cigarette smoke (CS), which are able to deplete antioxidants and induce oxidation products affecting skin pathophysiology. Skin turnover and regeneration are largely dependent on extracellular matrix metabolism, which is under the co... | 1 |
191,371 | Elevated carbon dioxide and ozone effects on peanut: II. Seed yield and quality | Burkey, KO; Booker, FL; Pursley, WA; Heagle, AS | 2,007 | Many adverse effects of tropospheric 0 3 on C 3 crop plants are ameliorated by elevated concentrations of atmospheric CO2 but the extent of the interaction can vary, depending on the species, gas concentrations, and other experimental conditions. A 2-yr open-top field chamber experiment was conducted to examine this in... | 1 |
779,810 | Air leakage of U.S. homes: Model prediction | Sherman, M; McWilliams, J | 2,007 | Air tightness is an important property of building envelopes. It is a key factor in determining infiltration and related wall-performance properties such as indoor air quality, maintainability and moisture balance. Air leakage in U.S. houses consumes roughly 1/3 of the HVAC energy but provides most of the ventilation u... | 1 |
670,381 | Nighttime transpiration in woody plants from contrasting ecosystems | Dawson, TE; Burgess, SS; Tu, KP; Oliveira, RS; Santiago, LS; Fisher, JB; Simonin, KA; Ambrose, AR | 2,007 | It is commonly assumed that transpiration does not occur at night because leaf stomata are closed in the dark. We tested this assumption across a diversity of ecosystems and woody plant species by various methods to explore the circumstances when this assumption is false. Our primary goals were: (1) to evaluate the nat... | 1 |
191,350 | Effects of elevated ozone on chlorophyll a fluorescence in symptomatic and asymptomatic leaves of two tomato genotypes | Degl'Innocenti, E; Guidi, L; Soldatini, GF | 2,007 | Two different genotypes of Lycopersicon esculentum Mill. (cv. Cuor di Bue, O-3-sensitive and line 93.1033/1, O-3-resistant) were treated with a single dose of ozone (150 mm(3) m(-3) for 3 h). The PS 2 activity was examined by measurements of chlorophyll a fluorescence on symptomatic and asymptomatic leaves. Symptoms we... | 1 |
194,640 | Comparison of different stomatal conductance algorithms for ozone flux modelling | Buker, P; Emberson, LD; Ashmore, MR; Cambridge, HM; Jacobs, C; Massman, WJ; Muller, J; Nikolov, N; Novak, K; Oksanen, SE; Schaub, M; de la Torre, D | 2,007 | A multiplicative and a semi-mechanistic, BWB-type [Ball, J.T., Woodrow, I.E., Berry, J.A., 1987. A model predicting stomatal conductance and its contribution to the control of photosynthesis under different environmental conditions. In: Biggens, J. (Ed.), Progress in Photosynthesis Research, vol. IV. Martinus Nijhoff, ... | 0 |
191,606 | Physiological and biochemical responses to acute ozone-induced oxidative stress in Medicago truncatula | Puckette, MC; Weng, H; Mahalingam, R | 2,007 | Oxidative signaling mediated by reactive oxygen species (ROS) is a central component of biotic and abiotic stresses in plants. Acute ozone (O-3) fumigation is a useful non-invasive treatment for eliciting endogenous ROS in planta. In this study, 38 different accessions of the model legume, Medicago truncatula, from var... | 0 |
190,287 | The short-term influence of weather on daily mortality in congestive heart failure | Kolb, S; Radon, K; Valois, MF; Heguy, L; Goldberg, MS | 2,007 | The authors' purpose in this study was to determine whether changes in weather conditions were associated with daily mortality among people aged 65 years and older diagnosed as having congestive heart failure in Montreal, Canada, and who died in the urban area between 1984 and 1993. The authors used a time-stratified c... | 0 |
122,445 | Daily variation in the properties of urban ultrafine aerosol-Part I: Physical characterization and volatility | Moore, KF; Ning, Z; Ntziachristos, L; Schauer, JJ; Sioutas, C | 2,007 | A summer air quality monitoring campaign focusing on the evolution of ultrafine (<180nm in diameter) particle concentrations was conducted at an urban site in Los Angeles during June-July 2006. Previous observations suggest that ultrafine aerosol at this site are generally representative of the Los Angeles urban enviro... | 0 |
199,826 | Effects of elevated CO2 and O3 on leaf litter phenolics and subsequent performance of litter-feeding soil macrofauna | Kasurinen, A; Peltonen, PA; Julkunen-Tiitto, R; Vapaavuori, E; Nuutinen, V; Holopainen, T; Holopainen, JK | 2,007 | Two field-growing silver birch (Betula pendula Roth) clones (clone 4 and 80) were exposed to elevated CO2 and O3 for three growing seasons (1999?2001). The phenolic compounds of naturally abscised leaf litter were analyzed in order to determine the possible CO2- and O3-induced changes in the litter quality. The potenti... | 1 |
196,916 | Perspectives regarding 50 years of research on effects of tropospheric ozone air pollution on US forests | Karnosky, DF; Skelly, JM; Percy, KE; Chappelka, AH | 2,007 | Tropospheric ozone (O-3) was first determined to be phytotoxic to grapes in southern California in the 1950s. Investigations followed that showed O-3 to be the cause of foliar symptoms on tobacco and eastern white pine. In the 1960s, "X" disease of ponderosa pines within the San Bernardino Mountains was likewise determ... | 0 |
199,294 | Shoot growth of mature Fagus sylvatica and Picea abies in relation to ozone | Braun, S; Schindler, C; Rihm, B; Fluckiger, W | 2,007 | Epidemiological analysis of sequential growth data may be a tool in assessing ozone sensitivity of mature trees. Annual shoot growth of mature Fagus sylvatica in 83 Swiss permanent forest observation plots and of Picea abies in 61 plots was evaluated for 11 and 8 consecutive years, respectively, using branches harveste... | 0 |
90,429 | Association between maternal exposure to ambient air pollutants during pregnancy and fetal growth restriction | Liu, S; Krewski, D; Shi, Y; Chen, Y; Burnett, R | 2,007 | Previous research demonstrated consistent associations between ambient air pollution and emergency room visits, hospitalizations, and mortality. Effect of air pollution on perinatal outcomes has recently drawn more attention. We examined the association between intrauterine growth restriction (IUGR) among singleton ter... | 1 |
96,146 | Ambient air pollution and preterm birth in the environment and pregnancy outcomes study at the University of California, Los Angeles | Ritz, B; Wilhelm, M; Hoggatt, KJ; Ghosh, JK | 2,007 | The authors conducted a case-control survey nested within a birth cohort and collected detailed risk factor information to assess the extent to which residual confounding and exposure misclassification may impact air pollution effect estimates. Using a survey of 2,543 of 6,374 women sampled from a cohort of 58,316 elig... | 1 |
191,708 | Use of ethylenediurea (EDU) to ameliorate ozone effects on purple coneflower (Echinacea purpurea) | Szantoi, Z; Chappelka, AH; Muntifering, RB; Somers, GL | 2,007 | Purple coneflower plants (Echinacea purpurea) were placed into open-top chambers (OTCs) for 6 and 12 weeks in 2003 and 2004, respectively, and exposed to charcoal-filtered air (CF) or twice-ambient (2x) ozone (03) in 2003, and to CF, 2x or non-filtered (NF), ambient air in 2004. Plants were treated with ethylenediurea ... | 0 |
199,365 | Photosynthetic responses to elevated CO2 and O-3 in Quercus ilex leaves at a natural CO2 spring | Paoletti, E; Seufert, G; Della Rocca, G; Thomsen, H | 2,007 | Photosynthetic stimulation and stomatal conductance (Gs) depression in Quercus ilex leaves at a CO2 spring suggested no down-regulation. The insensitivity of Gs to a CO2 increase (from ambient 1500 to 2000 mu mol mol(-1)) suggested stomatal acclimation. Both responses are likely adaptations to the special environment O... | 1 |
199,336 | Analysis of the variability of photosynthesis parameters in tree seedlings under ozone and water stress conditions | Cascio, C; Strasser, R | 2,007 | The analysis of the variability of the photosynthesis properties and
responses (within and among individuals), is important in assessing the impact of stress factors in plant population and communities, as well as in supporting remote sensing techniques in stress assessment.
Photosynthesis parameters, namely the Perfor... | 0 |
149,017 | Indoor air quality: Lemon-fresh ozone | Burton, A | 2,007 | null | 0 |
622,733 | Ozone air quality and radiative forcing consequences of changes in ozone precursor emissions | West, JJ; Fiore, AM; Naik, V; Horowitz, LW; Schwarzkopf, MD; Mauzerall, DL | 2,007 | Changes in emissions of ozone (O3) precursors affect both air quality and climate. We first examine the sensitivity of surface O3 concentrations (O3srf) and net radiative forcing of climate (RFnet) to reductions in emissions of four precursors ? nitrogen oxides (NOx), non?methane volatile organic compounds, carbon mono... | 1 |
191,585 | Ozone phytotoxicity and plant defense responses | Patil, VU | 2,007 | Global atmospheric concentrations have risen about 36% since the preindustrial times. Rapid industrialization and human activities have contributed significant amounts of this toxic gas pollutant to the tropospheric environment that pose significant threat for the survival and productivity of native and cultivated ecos... | 0 |
196,565 | Atmospheric particulate matter and ozone under heat-wave conditions: do they cause an increase of mortality in Croatia? | Alebic-Juretic, A; Cvitas, T; Kezele, N; Klasinc, L; Pehnec, G; Sorgo, G | 2,007 | In August 2003 Croatia experienced a heat-wave period during which elevated concentrations of particulate matter (PM10) and ozone in ambient air were measured. By applying the model of Stedman and Rooney et al., it was shown that a significant part of excess mortality during this period can be attributed to PM10 and oz... | 0 |
93,294 | Indirect radiative forcing of climate change through ozone effects on the land-carbon sink | Sitch, S; Cox, PM; Collins, WJ; Huntingford, C | 2,007 | The evolution of the Earth's climate over the twenty-first century depends on the rate at which anthropogenic carbon dioxide emissions are removed from the atmosphere by the ocean and land carbon cycles. Coupled climate-carbon cycle models suggest that global warming will act to limit the land-carbon sink, but these fi... | 1 |
597,609 | Ambient ozone primes pulmonary innate immunity in mice | Hollingsworth, JW; Maruoka, S; Li, Z; Potts, EN; Brass, DM; Garantziotis, S; Fong, A; Foster, WM; Schwartz, DA | 2,007 | Exposure to ozone in air pollution in urban environments is associated with increases in pulmonary-related hospitalizations and mortality. Because ozone also alters clearance of pulmonary bacterial pathogens, we hypothesized that inhalation of ozone modifies innate immunity in the lung. To address our hypothesis, we ex... | 1 |
195,717 | Three-dimensional simulations of reactive gas uptake in single airway bifurcations | Taylor, AB; Borhan, A; Ultman, JS | 2,007 | The pattern of lung injury induced by the inhalation of ozone (O3) depends on the dose delivered to different tissues in the airways. This study examined the distribution of O3 uptake in a single, symmetrically branched airway bifurcation. Reaction in the epithelial lining fluid was assumed to be so rapid that O3 conce... | 1 |
595,096 | Comparison of measurements of peroxyacyl nitrates and primary carbonaceous aerosol concentrations in Mexico City determined in 1997 and 2003 | Marley, NA; Gaffney, JS; Ramos-Villegas, R; Cardenas Gonzalez, B | 2,007 | Peroxyacetyl nitrate (PAN) concentrations in ambient air can be a good indicator of air quality and the effectiveness of control strategies for reducing ozone levels in urban areas. As PAN is formed by the oxidation of reactive hydrocarbons in the presence of nitrogen dioxide (NO<sub>2</sub>), it is a direct measure of... | 0 |
93,198 | Short-term exposure to air pollution and inflammation-sensitive biomarkers | Steinvil, A; Kordova-Biezuner, L; Shapira, I; Berliner, S; Rogowski, O | 2,007 | #OBJECTIVES: To evaluate the effect of short-term exposure to air pollutants on inflammation-sensitive biomarkers in apparently healthy individuals. METHODS: We enrolled all participants from The Tel-Aviv Sourasky Medical Center inflammation survey held between 2003 and 2006, excluding participants with an acute or chr... | 0 |
195,613 | Effects of antioxidant enzyme polymorphisms on ozone-induced lung function changes | Chen, C; Arjomandi, M; Tager, IB; Holland, N; Balmes, JR | 2,007 | Chronic exposure to ozone (O-3) can cause changes in lung function that may reflect remodelling of small airways. It is likely that antioxidant enzyme function affects susceptibility to O-3. The aim of the present study was to determine whether polymorphisms in antioxidant enzyme (GSTM1, GSTP1 and NQO1) genes affect th... | 0 |
195,342 | Ozone cracking and flex cracking of crosslinked polymer blend compounds | Tse, MF | 2,007 | Ozone cracking and flex cracking of crosslinked elastomer blends of brominated isobutylene/para-methylstyrene copolymer (BIMSM) and unsaturated elastomers, such as polybutadiene rubber (BR) and natural rubber (NR), are studied. This saturated BIMSM elastomer, which is a terpolymer of isobutylene, para-bromomethylstyren... | 0 |
107,431 | The use of air quality forecasts to assess impacts of air pollution on crops: Methodology and case study | Tong, D; Mathur, R; Schere, K; Kang, D; Yu, S | 2,007 | It has been reported that ambient ozone (O3), either alone or in concurrence with acid rain precursors, accounts for up to 90% of US crop losses resulting from exposure to all major air pollutants. Crop damage due to O3 exposure is of particular concern as ambient O3 concentrations remain high in many major food-produc... | 1 |
90,742 | Asthma and air quality | Sarnat, JA; Holguin, F | 2,007 | #PURPOSE OF REVIEW: There is evidence for an association between asthma and air pollutants, including ozone, NO2 and particulate matter. Since these pollutants are ubiquitous in the urban atmosphere and typically correlated with each other it has been difficult to ascertain the specific sources of air pollution respons... | 0 |
449,034 | Generation of sub-micron particles and secondary pollutants from building materials by ozone reaction | Aoki, T; Tanabe, S | 2,007 | This study reports results from two different experiments examining reactions between ozone and common building materials that can lead to the formation of secondary products and particulate-phase materials. Monitored species include sub-micron particles and volatile organic compounds (VOCs). In the first set of experi... | 1 |
195,350 | Rubber-bitumen sealing mastics | Zaglyadova, SV; Lyusova, LR; Glagolev, VA; Vlasenko, FS | 2,007 | Properties of mastics on the basis of polychloroprene and ethylene-propylene diene rubber SKEPT-40 designed for the sealing of edges of outer wall panels are considered. Quinol ether was used as a curing agent. The stability of vulcanizates in an ozone-air atmosphere is studied by the stress relaxation method, and it i... | 0 |
694,682 | Individual exposure to air pollution in urban areas: the example of Marseille | Grimaldi, F; Viala, A | 2,007 | We examined the exposure of an urban population to the following air pollutants, in the home and outdoors: nitrogen dioxide, benzene and its derivative BTXE, carbon monoxide, ozone, aldehydes and particulate matter (PM)(2,5). Measurements were made continuously during 48-hour periods in summer and in winter, in non-smo... | 0 |
91,037 | A chemical climatology of lower tropospheric trace gases and aerosols over the Mid-Atlantic region | Hains, JC | 2,007 | Ozone and aerosols affect air quality, visibility and human health. The University of Maryland research aircraft conducted flights over the Mid-Atlantic region between 1995 and 2005 to characterize pollution events. I developed a chemical climatology of trace gases and aerosols that can be used to validate and improve ... | 0 |
191,370 | Elevated carbon dioxide and ozone effects on peanut: I. Gas-exchange, biomass, and leaf chemistry | Booker, FL; Burkey, KO; Pursley, WA; Heagle, AS | 2,007 | The effects of elevated CO2 and ozone (O-3) on net photosynthetic rate (A) and growth are generally antagonistic although plant responses are highly dependent on crop sensitivity to the individual gases and their concentrations. In this experiment, we evaluated the effects of various CO2 and O-3 mixtures on leaf gas-ex... | 1 |
624,858 | The impact of building recirculation rates on secondary organic aerosols generated by indoor chemistry | Zuraimi, MS; Weschler, CJ; Tham, KW; Fadeyi, MO | 2,007 | Numerous investigators have documented increases in the concentrations of airborne particles as a consequence of ozone/terpene reactions in indoor environments. This study examines the effect of building recirculation rates on the concentrations of secondary organic aerosol (SOA) resulting from reactions between indoor... | 0 |
655,518 | Comparison of the immune suppressive effectiveness of UVB and long-wave UVA in humans | Renwick, Y; Phan, T; Halliday, G; Damian, D | 2,007 | Background: Ultraviolet radiation (UVR)-induced suppression of cutaneous immune responses enhances the development of skin cancers. We determined the immune suppressive effectiveness of various narrow bandwidths across the UVR spectrum in order to calculate the relative immunosuppressive contribution of UVB (290?320 nm... | 0 |
596,420 | Ozone enhancement of lower airway allergic inflammation is prevented by gamma-tocopherol | Wagner, JG; Jiang, Q; Harkema, JR; Illek, B; Patel, DD; Ames, BN; Peden, DB | 2,007 | Ozone is a commonly encountered environmental oxidant which has been linked to asthma exacerbation in epidemiological studies. Ozone induces airway inflammation and enhances response to inhaled allergen. It has been suggested that antioxidant therapy may minimize the adverse effects of ozone in asthma. We have previous... | 1 |
92,980 | Summary for policymakers | null | 2,007 | The Working Group I contribution to the IPCC Fourth Assessment Report describes progress in understanding of the human and natural drivers of climate change,1 observed climate change, climate processes and attribution, and estimates of projected future climate change. It builds upon past IPCC assessments and incorporat... | 1 |
180,174 | Toward a biologically significant and usable standard for ozone that will also protect plants | Paoletti, E; Manning, WJ | 2,007 | Ozone remains an important phytotoxic air pollutant and is also recognized as a significant greenhouse gas. In North America, Europe, and Asia, incidence of high concentrations is decreasing, but background levels are steadily rising. There is a need to develop a biologically significant and usable standard for ozone. ... | 1 |
93,043 | Did a ban on diesel-fuel reduce emergency respiratory admissions for children? | El-Zein, A; Nuwayhid, I; El-Fadel, M; Mroueh, S | 2,007 | This paper assesses whether a ban on diesel-powered motor vehicles in Lebanon has reduced emergency respiratory admissions for children less than 17 years of age in Beirut. Monthly admissions for total respiratory complaints, asthma, bronchitis, pneumonia, and upper respiratory tract infections, from October to Februar... | 0 |
199,414 | Why should we calculate complex indices of ozone exposure? Results from Mediterranean background sites | Paoletti, E; De Marco, A; Racalbuto, S | 2,007 | While moving towards a flux-based approach, exposure-based ozone metrics are still a practical measure for summarising ambient air quality. Ozone hourly concentrations for the period 2000-2004 from sites in the Mediterranean Italy (<= 600 m a.s.l.) were examined to define the O-3 summary statistic in the area, and to d... | 0 |
199,320 | Differential expression of 10 sweetpotato peroxidases in response to sulfur dioxide, ozone, and ultraviolet radiation | Kim, YH; Lim, S; Han, SH; Lee, JC; Song, WK; Bang, JW; Kwon, SY; Lee, HS; Kwak, SS | 2,007 | Secretory class III plant peroxidase (POD, EC 1.11.1.7) is believed to function in diverse physiological processes, including responses to various environmental stresses. To understand the function of each POD in terms of air pollutants and UV radiation, changes in POD activity and expression of 10 POD genes isolated f... | 0 |
93,210 | Nitrogen oxides measurements at rural sites in Switzerland: Bias of conventional measurement techniques | Steinbacher, M; Zellweger, C; Schwarzenbach, B; Bugmann, S; Buchmann, B; Ordo?ez, C; Prevot, ASH; Hueglin, C | 2,007 | Nitrogen oxides (NOx = NO + NO2) in the atmosphere are often measured using instruments equipped with molybdenum converters. NO2 is catalytically converted to NO on a heated molybdenum surface and subsequently measured by chemiluminescence after reaction with ozone. The drawback of this technique is that other oxidized... | 0 |
93,290 | Temporal patterns of foliar ozone symptoms on tall milkweed (Asclepias exaltata L) in Great Smoky Mountains National Park | Chappelka, AH; Somers, GL; Renfro, JR | 2,007 | Incidence and severity of ozone-induced foliar symptoms on tall milkweed (Asclepias exaltata L.) along selected trails in Great Smoky Mountains National Park (GRSM) were determined by two surveys/season conducted from 1992 through 1996. Overall incidence was 73%, and was 84%, 44%, 90%, 58%, and 82% for 1992u1996, respe... | 1 |
191,553 | Overexpression of monodehydroascorbate reductase in transgenic tobacco confers enhanced tolerance to ozone, salt and polyethylene glycol stresses | Eltayeb, AE; Kawano, N; Badawi, GH; Kaminaka, H; Sanekata, T; Shibahara, T; Inanaga, S; Tanaka, K | 2,007 | Ascorbate (AsA) is a major antioxidant and free-radical scavenger in plants. Monodehydroascorbate reductase (MDAR; EC 1.6.5.4) is crucial for AsA regeneration and essential for maintaining a reduced pool of AsA. To examine whether an overexpressed level of MDAR could minimize the deleterious effects of environmental st... | 1 |
93,042 | A comparison of mortality related to urban air particles between periods with Asian dust days and without Asian dust days in Seoul, Korea, 2000-2004 | Lee, JT; Son, JY; Cho, YS | 2,007 | Recent papers have reported that Asian dust events have been associated with increased risks of all-cause mortality and rates of respiratory illness. The current study was designed to estimate the relative risk of mortality associated with Asian dust events. We used the daily counts of non-accidental deaths, air pollut... | 0 |
191,464 | Increasing risk for negative ozone impacts on vegetation in northern Sweden | Karlsson, PE; Tang, L; Sundberg, J; Chen, D; Lindskog, A; Pleijel, H | 2,007 | Trends were found for increasing surface ozone concentrations during April-September in northern Sweden over the period 1990-2006 as well as for an earlier onset of vegetation growing season. The highest ozone concentrations in northern Sweden occurred in April and the ozone concentrations in April showed a strong incr... | 0 |
596,402 | The pharmacological effects of ozone on isolated guinea pig tracheal preparations | Lotriet, CJ; Oliver, DW; Venter, DP | 2,007 | Ozone is a potent oxidizing agent with a variety of potential uses, including its antimicrobial and deodorising properties. The recent increased use of ozone led to questions regarding its safety in humans. This study specifically focussed on the in vitro effect of ozone on isolated guinea pig tracheal tissue as well a... | 0 |
186,919 | Do levels of airborne grass pollen influence asthma hospital admissions? | Erbas, B; Chang, JH; Dharmage, S; Ong, EK; Hyndman, R; Newbigin, E; Abramson, M | 2,007 | BACKGROUND: The effects of environmental factors and ambient concentrations of grass pollen on allergic asthma are yet to be established.
OBJECTIVE: We sought to estimate the independent effects of grass pollen concentrations in the air over Melbourne on asthma hospital admissions for the 1992-1993 pollen season.
M... | 0 |
596,377 | Atmospheric photochemical transformations enhance 1,3-butadiene-induced inflammatory responses in human epithelial cells: The role of ozone and other photochemical degradation products | Doyle, M; Sexton, KG; Jeffries, H; Jaspers, I | 2,007 | Chemistry of hazardous air pollutants has been studied for many years, yet little is known about how these chemicals, once reacted within urban atmospheres, affect healthy and susceptible individuals. Once released into the atmosphere, 1,3-butadiene (BD) reacts with hydroxyl radicals and ozone (created by photochemical... | 1 |
521,350 | Climate response to projected changes in short-lived species under an A1B scenario from 2000-2050 in the GISS climate model | Shindell, DT; Faluvegi, G; Bauer, SE; Koch, DM; Unger, N; Menon, S; Miller, RL; Schmidt, GA; Streets, DG | 2,007 | We investigate the climate forcing from and response to projected changes in short-lived species and methane under an A1B scenario from 2000-2050 in the GISS climate model. We present a meta-analysis of new simulations of the full evolution of gas and aerosol species and other existing experiments with variations of th... | 1 |
191,641 | Response of gas exchange and yield components of field-grown Triticum aestivum L. to elevated ozone in China | Feng, ZZ; Yao, FF; Chen, Z; Wang, XK; Meng, QW; Feng, ZW | 2,007 | To assess photosynthesis and yield components' response of field-grown wheat to increasing ozone (03) concentration (based on diurnal pattern of ambient O-3) in China, winter wheat (Triticum aestivum L.) cv. Jia 403 was planted in open top chambers and exposed to three different O-3 concentrations: O-3-free air (CF), a... | 0 |
90,563 | Examining photolysis rates with a prototype online photolysis module in CMAQ | Binkowski, FS; Arunachalam, S; Adelman, Z; Pinto, JP | 2,007 | A prototype online photolysis module has been developed for the Community Multiscale Air Quality (CMAQ) modeling system. The module calculates actinic fluxes and photolysis rates (j values) at every vertical level in each of seven wavelength intervals from 291 to 850 nm, as well as the total surface irradiance and aero... | 1 |
195,841 | Time course of ozone-induced changes in breathing pattern in healthy exercising humans | Schelegle, ES; Walby, WF; Adams, WC | 2,007 | We examined the time course of O3-induced changes in breathing pattern in 97 healthy human subjects (70 men and 27 women). One- to five-minute averages of breathing frequency (fB) and minute ventilation (E) were used to generate plots of cumulative breaths and cumulative exposure volume vs. time and cumulative exposure... | 1 |
622,978 | Screening for indoor air quality of air-conditioned off ices | Wong, LT; Mui, KW; Hui, PS | 2,007 | It would be costly to sample all toxic air pollutants to which an entire community is exposed. In Hong Kong, a voluntary Indoor Air Quality (IAQ) certification scheme for IAQ assessment in workplaces proposes the measurement of the levels of 12 parameters: carbon dioxide, carbon monoxide, respirable suspended particula... | 0 |
195,142 | The effect of exercise on nasal uptake of ozone in healthy human adults | Sawyer, K; Brown, J; HazuchaM; Bennett, WD | 2,007 | The nose may help protect the lower respiratory tract from the effects of ambient ozone by scrubbing ozone from inspired air. Reductions in both nasal resistance and nitric oxide production with exercise may influence the efficiency of ozone uptake in the nose. Nasal ozone uptake was measured in 10 healthy volunteers b... | 1 |
199,388 | Visible foliar injury and physiological responses to ozone in Italian provenances of Fraxinus excelsior and F-ornus | Contran, N; Paoletti, E | 2,007 | We compared leaf visible injury and physiological responses (gas exchange and chlorophyll a fluorescence) to high O-3 exposure (150 nmol mol(-1) h, 8 h day(-1), 35-40 days) of two woody species of the same genus with different ecological features: the mesophilic green ash (Fraxinus excelsior) and the xerotolerant manna... | 0 |
134,565 | VOC concentration profiles in an ozone non-attainment area: A case study in an urban and industrial complex metroplex in southern Taiwan | Hung-Lung, C; Jiun-Horng, T; Shih-Yu, C; Kuo-Hsiung, L; Sen-Yi, M | 2,007 | null | 0 |
191,415 | Forest understory clover populations in enriched CO2 and O-3 atmospheres: Interspecific, intraspecific, and indirect effects | Awmack, CS; Mondor, EB; Lindroth, RL | 2,007 | The effects of CO2 and tropospheric O-3 on forest trees are increasingly the subject of experimental evaluation. Little is known, however, about the effects of these gases on understory plant taxa. At the Aspen free-air CO2 and O-3 enrichment (Aspen FACE) site we assessed colonization and establishment of two common fo... | 1 |
630,274 | Future climate impacts of direct radiative forcing of anthropogenic aerosols, tropospheric ozone, and long-lived greenhouse gases | Chen, WT; Liao, H; Seinfeld, JH | 2,007 | Long-lived greenhouse gases (GHGs) are the most important driver of climate change over the next century. Aerosols and tropospheric ozone (O3) are expected to induce significant perturbations to the GHG-forced climate. To distinguish the equilibrium climate responses to changes in direct radiative forcing of anthropoge... | 1 |
136,206 | What is causing high ozone at Summit, Greenland? | Helmig, D; Oltmans, SJ; Morse, TO; Dibb, JE | 2,007 | Causes for the unusually high and seasonally anomalous
ozone concentrations at Summit, Greenland were investigated. Surface data from continuous
monitoring, ozone sonde data, tethered balloon vertical profiling data, correlation of ozone with
the radionuclide tracers Be-7 and Pb-210, and synoptic transport analys... | 0 |
608,803 | Global modeling analysis of tropospheric ozone and its radiative forcing from biomass burning emissions in the twentieth century | Ito, A; Sudo, K; Akimoto, H; Sillman, S; Penner, JE | 2,007 | This work evaluates the sensitivity of tropospheric ozone (O/sub 3/) and its radiative forcing (RF) from 1890 to 1990 to different biomass burning (BB) emissions using a global tropospheric climate-chemistry model (CCM) with a modified chemical mechanism for anthropogenic volatile organic compounds (AVOC). The use of t... | 1 |
567,661 | Early postnatal exposure to allergen and ozone leads to hyperinnervation of the pulmonary epithelium | Kajekar, R; Pieczarka, EM; Smiley-Jewell, SM; Schelegle, ES; Fanucchi, MV; Plopper, CG | 2,007 | Airway injury in infant monkeys exposed to ozone and/or house dust mite allergen (HDMA) is associated with a loss of epithelial innervation. In this study, we evaluated for persistence/recovery of the altered epithelial innervation. Thirty-day-old rhesus monkeys were exposed to repeated episodes of HDMA and/or ozone fr... | 1 |
597,954 | Ozone exposure in the culture medium inhibits enterovirus 71 virus replication and modulates cytokine production in rhabdomyosarcoma cells | Lin, YC; Juan, HC; Cheng, YC | 2,007 | In the present study, the effects of ozone exposure on enterovirus 71 (EV71) replication and related cytokine production were investigated. Rhabdomyosarcoma cells (RD) were exposed to 0.5, 1, 1.5 and 2 ppm ozone or filtered air under different exposure regimens before or after infection for 1 or 2 h. The results reveal... | 0 |
101,119 | Characterization of aerosol over the Northern South China Sea during two cruises in 2003 | Zhang, X; Zhuang, G; Guo, J; Yin, K; Zhang, P | 2,007 | Atmospheric transport of trace elements has been found to be an important pathway for their input to the ocean. TSP, PM 10, and PM2.5 aerosol samples were collected over the Northern South China Sea in two cruises in 2003 to estimate the input of aerosol from continent to the ocean. About 23 elements and 14 soluble ion... | 1 |
93,292 | Ozone-induced symptoms on vegetation within the Moosehorn National Wildlife Refuge in Maine | Davis, DD | 2,007 | During 1998u2000 and 2002u2004, field surveys were conducted within the Moosehorn National Wildlife Refuge, located in northeastern Maine, to determine if ozone-induced symptoms occurred on refuge vegetation. Foliar symptoms were observed on ozone-sensitive bioindicators during each survey year, but the incidence (perc... | 1 |
191,358 | Effects of ozone impact on the gas exchange and chlorophyll fluorescence of juvenile birch stems (Betula pendula Roth.) | Wittmann, C; Matyssek, R; Pfanz, H; Humar, M | 2,007 | Effects of ozone impact on gas exchange and chlorophyll fluorescence of juvenile birch (Betula pendula) stems and leaves were investigated. Significant differences in the response of leaves and stems to ozone were found. In leaves, O-3 exposure led to a significant decline in photosynthetic rates, whereas stems reveale... | 0 |
191,263 | Changes in PEP carboxylase, rubisco and rubisco activase mRNA levels from maize (Zea mays) exposed to a chronic ozone stress | Leitao, L; Maoret, JJ; Biolley, JP | 2,007 | We quantified the ozone impact on levels of Zea mays L. cv. Chambord mRNAs encoding C-4-phosphoenolpyruvate carboxylase (C-4-PEPc), ribulose-1,5-bisphosphate carboxylase/oxygenase small and large subunits (Rubisco-SSU and Rubisco-LSU, respectively) and Rubisco activase (RCA) using real-time RT-PCR. Foliar pigment conte... | 1 |
597,623 | Pulmonary responses to acute ozone exposure in fasted mice: effect of leptin administration | Johnston, RA; Theman, TA; Terry, RD; Williams, ES; Shore, SA | 2,007 | Leptin is a satiety hormone that also has proinflammatory effects, including augmentation of ozone-induced pulmonary inflammation. The purpose of this study was to determine whether reductions in endogenous levels of leptin can attenuate pulmonary responses to ozone. To reduce serum leptin, we fasted mice overnight bef... | 0 |
623,018 | Comparisons of Tropospheric Emission Spectrometer (TES) ozone profiles to ozonesondes: Methods and initial results | Worden, HM; Logan, JA; Worden, JR; Beer, R; Bowman, K; Clough, SA; Eldering, A; Fisher, BM; Gunson, MR; Herman, RL; Kulawik, SS; Lampel, MC; Luo, M; Megretskaia, IA; Osterman, GB; Shephard, MW | 2,007 | The Tropospheric Emission Spectrometer (TES) on the Earth Observing System (EOS)-Aura spacecraft measures global profiles of atmospheric ozone with vertical resolution of 6-7 km in the troposphere for the nadir view. For a first validation of TES ozone measurements we have compared TES-retrieved ozone profiles to ozone... | 1 |
210,411 | Obesity and asthma: Lessons from animal models | Shore, SA | 2,007 | Epidemiological data indicate that obesity is a risk factor for asthma. These data are supported by observations in several murine models of obesity. Ob/ob, db/db, and Cpe(fat) mice each exhibit innate airway hyperresponsiveness, a characteristic feature of asthma. These mice also respond more vigorously to common asth... | 1 |
92,726 | Predictors of concentrations of nitrogen dioxide, fine particulate matter, and particle constituents inside of lower socioeconomic status urban homes | Baxter, LK; Clougherty, JE; Laden, F; Levy, JI | 2,007 | Air pollution exposure patterns may contribute to known spatial patterning of asthma morbidity within urban areas. While studies have evaluated the relationship between traffic and outdoor concentrations, few have considered indoor exposure patterns within low socioeconomic status (SES) urban communities. In this study... | 0 |
90,710 | Increase of exhaled nitric oxide in children exposed to low levels of ambient ozone | Nickmilder, M; De Burbure, C; Sylviane, C; Xavier, D; Alfred, B; Alain, D | 2,007 | Ozone (O3) is known to induce lung function impairment and airways inflammation during episodes of photochemical smog. The aim of the present study was to assess the inflammatory effect of ambient O3 in healthy children using nitric oxide in exhaled air (eNO) as a noninvasive test. The study was performed on 6 groups o... | 1 |
93,031 | Short term effects of air pollution on hospitalizations for cardiovascular diseases in eight French cities: The PSAS program | Larrieu, S; Jusot, JF; Blanchard, M; Prouvost, H; Declercq, C; Fabre, P; Pascal, L; Le Tertre, A; Wagner, V; Riviere, S; Chardon, B; Borelli, D; Cassadou, S; Eilstein, D; Lefranc, A | 2,007 | INTRODUCTION: Short term associations between air pollution indicators and hospitalizations for cardiovascular diseases have been suggested by epidemiological and clinical studies. The present study aims at estimating the association between particles with diameter < 10 mum (PM SUB 10), nitrogen dioxide (NO SUB 2) and ... | 1 |
93,023 | Space-based formaldehyde measurements as constraints on volatile organic compound emissions in east and south Asia and implications for ozone | Fu, TM; Jacob, DJ; Palmer, PI; Chance, K; Wang, YX; Barletta, B; Blake, DR; Stanton, JC; Pilling, MJ | 2,007 | We use a continuous 6-year record (1996u2001) of GOME satellite measurements of formaldehyde (HCHO) columns over east and south Asia to improve regional emission estimates of reactive nonmethane volatile organic compounds (NMVOCs), including isoprene, alkenes, HCHO, and xylenes. Mean monthly HCHO observations are compa... | 0 |
90,315 | Analysis of uncertainty in ozone population exposure modeling [technical memorandum] | Langstaff, JE | 2,007 | N/A. | 1 |
199,323 | Oxygen and carbon isotopic signatures reveal a long-term effect of free-air ozone enrichment on leaf conductance in semi-natural grassland | Jaggi, M; Fuhrer, J | 2,007 | The effect of ozone on leaf gas diffusion was investigated by analyzing the stable oxygen isotopic signatures (00) in leaves of Holcus lanatus L., Plantago lanceolata L., Ranunculus friesianus (Jord.), and Trifolium pratense L. grown in temperate, semi-natural grassland. Dried material from plants exposed to ambient or... | 0 |
194,637 | Risk assessments for forest trees: The performance of the ozone flux versus the AOT concepts | Karlsson, PE; Braun, S; Broadmeadow, M; Elvira, S; Emberson, L; Gimeno, BS; Le Thiec, D; Novak, K; Oksanen, E; Schaub, M; Uddling, J; Wilkinson, M | 2,007 | Published ozone exposure-response relationships from experimental studies with young trees performed at different sites across Europe were re-analysed in order to test the performance of ozone exposure indices based on AOTX (Accumulated exposure Over a Threshold of X nmol mol(-1)) and AF(st)Y (Accumulated Stomatal Flux... | 0 |
90,796 | Intercontinental Chemical Transport Experiment Ozonesonde Network study (IONS) 2004: 2 Tropospheric ozone budgets and variability over northeastern North America | Thompson, AM; Stone, JB; Witte, JC; Miller, SK; Oltmans, SJ; Kucsera, TL; Ross, KL; Pickering, KE; Merrill, JT; Forbes, G; Tarasick, DW; Joseph, E; Schmidlin, FJ; Mcmillan, WW; Warner, J; Hintsa, EJ; Johnson, JE | 2,007 | Daily ozone soundings taken from the R/V Ronald H. Brown from 7 July through 11 August 2004 as part of the Intercontinental Chemical Transport Experiment (INTEX) Ozonesonde Network Study (IONS) are used to investigate the vertical structure of ozone over the Gulf of Maine and to characterize variability in sources of t... | 1 |
90,798 | Why are there large differences between models in global budgets of tropospheric ozone? | Wu, S; Mickley, LJ; Jacob, DJ; Logan, JA | 2,007 | Global 3-D tropospheric chemistry models in the literature show large differences in global budget terms for tropospheric ozone. The ozone production rate in the troposphere, P(Ox ), varies from 2300 to 5300 Tg yr-1 across models describing the present-day atmosphere. The ensemble mean of P(Ox ) in models from the post... | 1 |
191,558 | Ozone affects gas exchange, growth and reproductive development in Brassica campestris (Wisconsin Fast Plants) | Black, VJ; Stewart, CA; Roberts, JA; Black, CR | 2,007 | Exposure to ozone (O-3) may affect vegetative and reproductive development, although the consequences for yield depend on the effectiveness of the compensatory processes induced. This study examined the impact on reproductive development of exposing Brassica campestris (Wisconsin Fast Plants) to ozone during vegetative... | 1 |
104,266 | The effect of variability in industrial emissions on ozone formation in Houston, Texas | Webster, M; Nam, J; Kimura, Y; Jeffries, H; Vizuete, W; Allen, DT | 2,007 | Ambient observations have indicated that high concentrations of ozone observed in the Houston/Galveston area are associated with plumes of highly reactive hydrocarbons, mixed with NOx, from industrial facilities. Ambient observations and industrial process data, such as mass flow rates for industrial flares, indicate t... | 1 |
136,207 | A review of surface ozone in the polar regions | Helmig, D; Oltmans, SJ; Carlson, D; Lamarque, JF; Jones, A; Labuschagne, C; Anlauf, K; Hayden, K | 2,007 | Surface ozone records from ten polar research stations were
investigated for the dependencies of ozone on radiative processes, snow-photochemisty, and.
synoptic and stratospheric transport. A total of 146 annual data records for the Arctic sites
Barrow, Alaska; Summit, Greenland; Alert, Canada; Zeppelinfjellet, N... | 0 |
196,579 | Interaction between ambient particles and ozone and its effect on daily mortality | Chen, GH; Song, GX; Jiang, LL; Zhang, YH; Zhao, NQ; Chen, BH; Kan, HD | 2,007 | OBJECTIVE: To examine the effect of particulate matter (PM) less than 10 microns in diameter (PM10) and ozone (O3) on daily mortality in Shanghai, China. METHODS: A generalized additive model with penalized spline function was used to observe the acute effect of PM10 and O3 on daily mortality. RESULTS: Higher PM10 sign... | 0 |
199,360 | Induction of isoforms of tetrapyrrole biosynthetic enzymes, AtHEMA2 and AtFC1, under stress conditions and their physiological functions in arabidopsis | Nagai, S; Koide, M; Takahashi, S; Kikuta, A; Aono, M; Sasaki-Sekimoto, Y; Ohta, H; Takamiya, K; Masuda, T | 2,007 | In the tetrapyrrole biosynthetic pathway, isoforms of glutamyl-tRNA reductase (HEMA2) and ferrochelatase1 (FC1) are mainly expressed in nonphotosynthetic tissues. Here, using promoter-beta-glucuronidase constructs, we showed that the expressions of Arabidopsis (Arabidopsis thaliana) HEMA2 (AtHEMA2) and FC1 (AtFC1) were... | 0 |
622,341 | Photochemical modeling of emissions trading of highly reactive volatile organic compounds in Houston, Texas. 2. Incorporation of chlorine emissions | Wang, LL; Thompson, T; Mcdonald-Buller, EC; Allen, DT | 2,007 | As part of the State Implementation Plan for attaining the National Ambient Air Quality Standard for ozone, the Texas Commission of Environmental Quality has created a Highly Reactive Volatile Organic Compounds (HRVOC) Emissions Cap and Trade Program for industrial point sources in the Houston/Galveston/Brazoria area. ... | 0 |
191,451 | Impact of elevated O3 and CO2 exposure on potato (Solanum tuberosum L. cv. Bintje) tuber macronutrients (N, P, K, Mg, Ca) | Piikki, K; Vorne, V; Ojanpera, K; Pleijel, H | 2,007 | It was investigated whether exposure of elevated ozone (O-3) and carbon dioxide (CO2) concentrations affected the macronutrient (N, P, K, Mg, Ca) concentrations in potato (Solanum tuberosum L.) tubers in three open-top chamber experiments from Sweden and Finland. The tuber concentrations of N, P, K and Mg correlated po... | 1 |
196,622 | [Health impact of ozone in 13 Italian cities] | Mitis, F; Iavarone, I; Martuzzi, M | 2,007 | OBJECTIVE: to estimate the health impact of ozone in 13 Italian cities over 200,000 inhabitants and to produce basic elements to permit the reproducibility of the study in other urban locations. DESIGN: the following data have been used: population data (2001), health data (2001 or from scientific literature), environm... | 0 |
199,341 | Induction of systemic resistance in Lycopersicon esculentum cv. PKM1 (tomato) against Cucumber mosaic virus by using ozone | Sudhakar, N; Nagendra-Prasad, D; Mohan, N; Murugesan, K | 2,007 | Studies were undertaken to evaluate ozone (03) for induction of resistance against Cucumber mosaic virus in Lycopersicon esculentum cv. PKM1 (tomato) plants. Callus induced from tomato leaf explants on Murashige & Skoog's (MS) medium Supplemented with benzyladenine (8.82 mu M) were treated with different concentrations... | 0 |
602,360 | Ozone injury in west coast forests: 6 years of monitoring - Introduction | Campbell, SJ; Wanek, R; Coulston, JW | 2,007 | Tropospheric ozone and other air contaminants are stressors that affect long-term sustainability of temperate forests throughout the world (Chappelka and Chevone 1992, Smith 1985, USDA Forest Service 1997, US EPA 1996b). Ozone has such critical effects that it is included as one of the air quality indicators under the ... | 1 |
196,972 | Defense and avoidance of ozone under global change | Tausz, M; Grulke, NE; Wieser, G | 2,007 | The level II approach of the critical loads concept adopted by the UNECE aims at a flux based evaluation and takes into account environmental factors governing stomatal conductance. These factors will probably be affected by global change. The flux concept predicts that a decrease in stomatal conductance would protect ... | 0 |
191,251 | Biogenic hydrocarbon chemistry within and above a mixed deciduous forest | Fuentes, JD; Wang, D; Bowling, DR; Potosnak, M; Monson, RK; Goliff, WS; Stockwell, WR | 2,007 | This manuscript includes findings from field and numerical modeling investigations designed to quantify the degree and rates of biogenic hydrocarbon chemical processing within and above a mixed deciduous forest in the southeastern United States. The study site was under the influences of nitrogen oxide and hydrocarbon ... | 1 |
199,789 | Changes in effects of ozone exposure on growth, photosynthesis, and respiration of Ginkgo biloba in Shenyang urban area | He, XY; Fu, SL; Chen, W; Zhao, TH; Xu, S; Tuba, Z | 2,007 | An open-top chamber experiment was carried out from April through October 2006 to examine the effects of elevated (80 nmol mol?1) atmospheric O3 on Ginkgo biloba (4-years-old) in urban area. The air with ambient O3 (AA, ? 45 nmol mol?1) was used as control. The leaf mass and size, leaf area index, net photosynthetic ra... | 1 |
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