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 |
|---|---|---|---|---|---|
199,271 | Monoterpene and isoprene emissions from typical tree species in forests around Mexico City | Dominguez-Taylor, P; Ruiz-Suarez, LG; Rosas-Perez, I; Hernandez-Solis, JM; Steinbrecher, R | 2,007 | The isoprenoid emission of sacred fir (Abies religiosa (Kunth) Schltdl. & Chain.), patula pine (Pinus patula Schiede, Schltdl. & Chain.) and net-leaf oak (Quercus rugosa Nee) was investigated in Mexico City during the years 2002 and 2003. Chemical compound specific emission factors were obtained for different months of... | 0 |
91,247 | Particulate air pollution, progression, and survival after myocardial infarction | Zanobetti, A; Schwartz, J | 2,007 | OBJECTIVE: Several studies have examined the effect of particulate pollution (PM) on survival in general populations, but less is known about susceptible groups. Moreover, previous cohort studies have been cross-sectional and subject to confounding by uncontrolled differences between cities. DESIGN: We investigated whe... | 1 |
191,706 | Types of ectomycorrhiza of mature beech and spruce at ozone-fumigated and control forest plots | Grebenc, T; Kraigher, H | 2,007 | In the Kranzberg forest near Freising (Germany) a novel "Free-Air Canopy O-3 Exposure" system has been employed for analysing O-3-induced responses from sub-cellular to ecosystem levels that are relevant for carbon balance and CO2 demand of 60-year-old beech trees. The below-ground ectomycorrhizal community was studied... | 0 |
526,288 | Relative impacts of worldwide tropospheric ozone changes and regional emission modifications on European surface-ozone levels | Szopa, S; Hauglustaine, DA | 2,007 | Multi-scale models were applied to assess the surface ozone changes in 2030. Several emission scenarios are considered, ranging from (a) a pessimistic anthropogenic emission increase to (b) an optimistic decrease of emissions, and including (c) a realistic scenario that assumes the implementation of control legislation... | 0 |
618,115 | Field comparison of passive samplers versus UV-photometric analyser to measure surface ozone in a Mediterranean area | Saborit, JMD; Cano, VJE | 2,007 | The aim of the present work is to compare the performance of the Radiello passive sampler versus UV-photometric ozone analyser to measure surface ozone in a Mediterranean Spanish coastal area. The comparison presented considers precision, bias, accuracy, selectivity, detection limit, cost and applicability. For assessi... | 0 |
677,315 | Rubber vulcanizates degradation and stabilization | Datta, RN; Huntink, NM; Datta, S; Talma, AG | 2,007 | Degradation of rubber vulcanizates in the presence and
absence of air as well as in presence of ozone is reviewed in this paper. The paper also outlines
the means to overcome this undesirable phenomenon. Under anaerobic aging conditions, which is
termed as reversion, the vulcanizates are exposed to elevated tempe... | 0 |
90,316 | Multipollutant modeling issues in a study of ambient air quality and emergency department visits in Atlanta | Tolbert, PE; Klein, M; Peel, JL; Sarnat, SE; Sarnat, JA | 2,007 | Multipollutant models are frequently used to differentiate roles of multiple pollutants in epidemiologic studies of ambient air pollution. In the presence of differing levels of measurement error across pollutants under consideration, however, they can be biased and as misleading as single-pollutant models. Their appro... | 1 |
418,827 | Acute pulmonary function response to ozone in young adults as a function of body mass index | Bennett, WD; Hazucha, MJ; Folinsbee, LJ; Bromberg, PA; Kissling, GE; London, SJ | 2,007 | Recent studies have shown enhanced responsiveness to ozone in obese mice. Adiposity has not been examined as a possible modulator of ozone response in humans. We therefore examined the relationship between body mass index and the acute spirometric response to ozone (O(3)) exposure among 197 nonasthmatic young adults (a... | 1 |
179,951 | Upregulation of substance P receptor expression by calcitonin gene-related peptide, a possible cooperative action of two neuropeptides involved in airway inflammation | Wu, H; Guan, C; Qin, X; Xiang, Y; Qi, M; Luo, Z; Zhang, C | 2,007 | Airway hyperresponsiveness (AHR) is present in almost all patients with symptomatic asthma, yet its mechanism is not well
understood. Airway inflammation is thought to be an important underlying mechanism involved in causing AHR. Recent studies
indicate release of neuropeptides from C-fiber endings plays a pivotal role... | 0 |
191,700 | Tree internal signalling and defence reactions under ozone exposure in sun and shade leaves of European beech (Fagus sylvatica L.) trees | Jehnes, S; Betz, G; Bahnweg, G; Haberer, K; Sandermann, H; Rennenberg, H | 2,007 | The influence of free-air ozone (O-3) fumigation on the levels of gene transcripts and compounds of defence and signalling were analysed in leaves of adult beech trees from the "Kranzberg Forest" research site in 2003 and 2004. This includes the precursor of the stress hormone ethylene, ACC (1-aminocy-clopropane-1-carb... | 0 |
695,479 | Distribution, magnitudes, reactivities, ratios and diurnal patterns of volatile organic compounds in the Valley of Mexico during the MCMA 2002 & 2003 field campaigns | Velasco, E; Lamb, B; Westberg, H; Allwine, E; Sosa, G; Arriaga-Colina, JL; Jobson, BT; Alexander, ML; Prazeller, P; Knighton, WB; Rogers, TM; Grutter, M; Herndon, SC; Kolb, CE; Zavala, M; de Foy, B; Volkamer, R; Molina, LT; Molina, MJ | 2,007 | A wide array of volatile organic compound (VOC) measurements was conducted in the Valley of Mexico during the MCMA-2002 and 2003 field campaigns. Study sites included locations in the urban core, in a heavily industrial area and at boundary sites in rural landscapes. In addition, a novel mobile-laboratory-based conditi... | 0 |
92,848 | Air pollution and hospital admissions for asthma in a subtropical city: Taipei, Taiwan | Yang, CY; Chen, CC; Chen, CY; Kuo, HW | 2,007 | This study was undertaken to determine whether there is an association between exposure to air pollutants levels and number of hospital admissions for asthma in Taipei, Taiwan. Hospital admissions for asthma and ambient air pollution data for Taipei were obtained for the period from 1996 through 2003. The relative risk... | 0 |
191,572 | Ozone effects on three Sambucus species | Cano, I; Calatayud, V; Cervero, J; Sanz, MJ | 2,007 | The onset and development of symptoms of three Sambucus species, S. ebulus, S. nigra and S. racemosa were studied in 2002 under three different experimental conditions, in charcoal filtered air (CF), and in two ozone enriched treatment: non filtered air plus 40 ppb ozone (NF+), and non filtered air plus 70 ppb ozone (N... | 0 |
156,594 | Characterization of PM2.5, gaseous pollutants, and meteorological interactions in the context of time-series health effects models | Ito, K; Thurston, GD; Silverman, RA | 2,007 | Associations of particulate matter (PM) and ozone with morbidity and mortality have been reported in many recent observational epidemiology studies. These studies often considered other gaseous co-pollutants also as potential confounders, including nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO).... | 1 |
93,196 | Seasonal variation of effect of air pollution on blood pressure | Choi, JH; Xu, QS; Park, SY; Kim, JH; Hwang, SS; Lee, KH; Lee, HJ; Hong, YC | 2,007 | Background: Many studies have shown a consistent association between ambient air pollution and an increase in death due to cardiovascular causes. An increase in blood pressure is a common risk factor for a variety of cardiovascular diseases. However, the association between air pollution and blood pressure has not been... | 1 |
93,275 | Traffic and outdoor air pollution levels near residences and poorly controlled asthma in adults | Meng, YY; Wilhelm, M; Rull, RP; English, P; Ritz, B | 2,007 | #BACKGROUND: Air pollution may exacerbate asthma. OBJECTIVE: To investigate associations between traffic and outdoor air pollution levels near residences and poorly controlled asthma among adults diagnosed as having asthma in Los Angeles and San Diego counties, California. METHODS: We estimated traffic density within 5... | 1 |
199,419 | Study of ambient ozone phytotoxicity in Ukraine and ozone protective effect of some antioxidants | Blum, O; Didyk, N | 2,007 | The aim of the study was to assess ambient ozone phytotoxicity in Kyiv (Ukraine) using bioindicator clover plants (Trifolium subterraneum cv. Geraldton) and to test some natural and synthetic antioxidants as ozone protectants. The results obtained showed that ambient ozone concentrations were high enough to cause visib... | 0 |
606,285 | Risk assessment for criteria pollutants and formaldehyde in Mexico City | Garcia-Reynoso, JA; Grutter, M; Cintora-Juarez, D | 2,007 | An environmental risk assessment study for Mexico City on criteria pollutants (O-3, NO2, SO2 and PM10) and formaldehyde (HCHO) is presented. The methodology for non-carcinogenic effects is based on the Hazard Index and for carcinogenic effects is based on the life cancer probability and life loss expectancy (LLE). Thes... | 0 |
93,278 | Does regular exercise protect against air pollution-associated mortality? | Wong, CM; Ou, CQ; Thach, TQ; Chau, YK; Chan, KP; Ho, SY; Chung, RY; Lam, TH; Hedley, AJ | 2,007 | OBJECTIVES: To examine whether habitual exercise would modify the effects of air pollution on mortality. METHODS: This study included 24,053 Hong Kong Chinese who died at the age of 30 years or older in 1998. Individual information on frequency of exercise was obtained by interviewing their relatives at all four death ... | 0 |
195,334 | Blending of NR/BR/EPDM by reactive processing for tire sidewall applications. III. Assessment of the blend ozone- and fatigue-resistance in comparison with a conventional NR/BR compound | Sahakaro, K; Datta, RN; Baaij, J; Noordermeer, JWM | 2,007 | The NR/BR blend compound formulations for tire sidewall applications contain a set of stabilizers added to prevent degradation mainly due to oxygen, ozone, and heat. 6PPD is the most effective and widely used antiozonant in tire compounds, but is a highly staining material causing a surface discoloration of the tire si... | 0 |
179,975 | Air pollutant effects on fetal and early postnatal development | Wang, L; Pinkerton, KE | 2,007 | Numerical research on the health effects of air pollution has been published in the last decade. Epidemiological studies have shown that children?s exposure to air pollutants during fetal development and early postnatal life is associated with many types of health problems including abnormal development (low birth weig... | 0 |
749,445 | Mucolytic activity of bacterial and human chitinases | Sanders, NN; Eijsink, VG; van den Pangaart, PS; Joost van Neerven, RJ; Simons, PJ; De Smedt, SC; Demeester, J | 2,007 | Several pulmonary pathologies, like cystic fibrosis (CF), are characterized by hypersecretion and stasis of tenacious mucus. Bacterial glycosidases are known to degrade mucins but their use as mucolytic agents is questionable. The observation that bacterial chitinases degrade mucins and the recent discovery of human ch... | 0 |
596,422 | Protective role of matrix metalloproteinase-9 in ozone-induced airway inflammation | Yoon, HK; Cho, HY; Kleeberger, SR | 2,007 | BACKGROUND: Exposure to ozone causes airway inflammation, hyperreactivity, lung hyper-permeability, and epithelial cell injury. An early inflammatory response induced by inhaled O(3) is characterized primarily by release of inflammatory mediators such as cytokines, chemokines, and airway neutrophil accumulation. Matrix... | 1 |
180,259 | Is ozone flux inside leaves only a damage indicator? Clues from volatile isoprenoid studies | Loreto, F; Fares, S | 2,007 | Tropospheric ozone is increasing at a fast pace and
causes large losses of production in cultivated plants
and forests (UNECE, 2004). Ozone risk assessment has
been based for a long time on exposure to external
ozone concentration. Doses above a selected threshold
(generally 40 nL L21) have been considered injurious,
a... | 1 |
191,496 | Isoprene synthase expression and protein levels are reduced under elevated O-3 but not under elevated CO2 (FACE) in field-grown aspen trees | Calfapietra, C; Wiberley, AE; Falbel, TG; Linskey, AR; Mugnozza, GS; Karnosky, DF; Loreto, F; Sharkey, TD | 2,007 | Emission of hydrocarbons by trees has a crucial role in the oxidizing potential of the atmosphere. In particular, isoprene oxidation leads to the formation of tropospheric ozone and other secondary pollutants. It is expected that changes in the composition of the atmosphere will influence the emission rate of isoprene,... | 0 |
199,357 | Photosynthetic behavior of woody species under high ozone exposure probed with the JIP-test: A review | Bussotti, F; Strasser, RJ; Schaub, M | 2,007 | Visible ozone symptoms on leaves are expressions of physiological mechanisms to cope with oxidative stresses. Often, the symptoms consist of stippling, which corresponds to localized cell death (hypersensitive response, HR), separated from healthy cells by a layer of callose. The HR strategy tends to protect the health... | 0 |
93,007 | Lightning-produced NOx over Brazil during TROCCINOX: airborne measurements in tropical and subtropical thunderstorms and the importance of mesoscale convective systems | Huntrieser, H; Schlager, H; Roiger, A; Lichtenstern, M; Schumann, U; Kurz, C; Brunner, D; Schwierz, C; Richter, A; Stohl, A | 2,007 | During the TROCCINOX field experiments in February - March 2004 and February 2005, airborne in situ measurements of NO, NOy, CO, and O-3 mixing ratios and the J(NO2) photolysis rate were carried out in the anvil outflow of thunderstorms over southern Brazil. Both tropical and subtropical thunderstorms were investigated... | 0 |
152,907 | Chemical segregation by heterogeneous emissions | Auger, L; Legras, B | 2,007 | Ozone pollution in the boundary layer results from photoactivated chemistry of primary pollutants released at the ground. As emissions are highly inhomogeneous in space and time and some chemical time-scales are of the order or larger than dynamical time-scales, it is admitted that turbulent transport and mixing is a k... | 0 |
196,581 | Outdoor air pollution: ozone health effects | Chen, TM; Gokhale, J; Shofer, S; Kuschner, WG | 2,007 | Ozone is a respiratory irritant associated with a spectrum of adverse health events. Ground-level ozone has been shown to cause decreases in lung function and has been associated with other important respiratory health effects. Some reports suggest short-term increases in ozone lead to increased cardiopulmonary mortali... | 0 |
126,736 | An exceptional ozone episode in northern Fennoscandia | Lindskog, A; Karlsson, PE; Grennfelt, P; Solberg, S; Forster, C | 2,007 | Ground-based observations of ozone have been performed at three sites in northern Fennoscandia, Karasjok, Esrange and Pallas. The sites are located in remote, unpolluted areas far away from the European source regions, and thus representing the northern hemispheric background. Events of photochemical episodes are rare.... | 0 |
668,927 | Terrestrial ecosystems, increased solar ultraviolet radiation, and interactions with bother climate change factors | Caldwell, MM; Bornman, JF; Ballare, CL; Flint, SD; Kulandaivelu, G | 2,007 | There have been significant advances in our understanding of the effects of UV-B radiation on terrestrial ecosystems, especially in the description of mechanisms of plant response. A further area of highly interesting research emphasizes the importance of indirect UV radiation effects on plants, pathogens, herbivoics, ... | 1 |
191,380 | Estimates of ozone AOT40 from passive sampling in forest sites in South-Western Europe | Gerosa, G; Ferretti, M; Bussotti, F; Rocchini, D | 2,007 | Weekly-fortnightly ozone (O-3) concentrations measured by passive sampling at 81 forest monitoring plots in France, Italy, Spain and Switzerland over the period 2000-2002 were used to estimate the cumulative exposure index AOT40. The estimation method is based on a deterministic model which describes the O-3 daily prof... | 0 |
605,269 | Air pollutant exposure during pregnancy and fetal and early childhood development. Research protocol of the INMA [Childhood and Environment Project] | Esplugues, A; Fernandez-Patier, R; Aguilera, I; Inigueza, C; Dos Santos, SG; Alfaro, AA; Lacasana, M; Estarlich, M; Grimalt, JO; Fernandez, M; Rebagliato, M; Sala, M; Tardon, A; Torrent, M; Martinez, MD; Ribas-Fito, N; Sunyer, J; Ballester, F | 2,007 | Introduction: The INMA (INfancia y Medio Ambiente (Spanish for Environment and Childhood]) project is a cooperative research network. This project aims to study the effects of environment and diet on fetal and early childhood development. This article aims to present the air pollutant exposure protocol during pregnancy... | 0 |
625,277 | Gel-based proteomics reveals potential novel protein markers of ozone stress in leaves of cultivated bean and maize species of Panama | Torres, NL; Cho, K; Shibato, J; Hirano, M; Kubo, A; Masuo, Y; Iwahashi, H; Jwa, NS; Agarwal, GK; Rakwal, R | 2,007 | We examined responses of cultivated bean (Phaseolus vulgaris L. cv. IDIAP R-3) and maize (Zea mays L. cv. Guarare 8128) plants exposed to ozone < O-3 > using a leaf injury assessment and proteomics approach. Plants grown for 16 days in greenhouse were transferred to an O-3 chamber and exposed continuously to 0.2 PPM O-... | 0 |
195,838 | Issues in the design and interpretation of chronic toxicity and carcinogenicity studies in rodents: approaches to dose selection | Rhomberg, LR; Baetcke, K; Blancato, J; Bus, J; Cohen, S; Conolly, R; Dixit, R; Doe, J; Ekelman, K; Fenner-Crisp, P; Harvey, P; Hattis, D; Jacobs, A; Jacobson-Kram, D; Lewandowski, T; Liteplo, R; Pelkonen, O; Rice, J; Somers, D; Turturro, A; West, W; Olin, S | 2,007 | For more than three decades chronic studies in rodents have been the benchmark for assessing the potential long-term toxicity, and particularly the carcinogenicity, of chemicals. With doses typically administered for about 2 years (18 months to lifetime), the rodent bioassay has been an integral component of testing pr... | 0 |
520,992 | The outdoor air quality flag program in central california: A school-based educational intervention to potentially help reduce children's exposure to environmental asthma triggers | Shendell, DG; Rawling, MM; Foster, C; Bohlke, A; Edwards, B; Rico, SA; Felix, J; Eaton, S; Moen, S; Roberts, EM; Love, MB | 2,007 | This paper describes a novel school-based, visual environmental public health educational intervention intended to help reduce the exposure of children-and adults-to outdoor air pollution, including known environmental asthma triggers like ozone and particles. The overarching goal was to enhance the learning, recreatio... | 0 |
785,547 | Summertime influence of Asian pollution in the free troposphere over North America | Liang, Q; Jaegle, L; Hudman, RC; Turquety, S; Jacob, DJ; Avery, MA; Browell, EV; Sachse, GW; Blake, DR; Brune, W; Ren, X; Cohen, RC; Dibb, JE; Fried, A; Fuelberg, H; Porter, M; Heikes, BG; Huey, G; Singh, HB; Wennberg, PO | 2,007 | We analyze aircraft observations obtained during INTEX-A (1 July to 14 August 2004) to examine the summertime influence of Asian pollution in the free troposphere over North America. By applying correlation analysis and principal component analysis (PCA) to the observations between 6 and 12 km, we find dominant influen... | 0 |
604,933 | The environment and asthma in US inner cities | Eggleston, PA | 2,007 | Poor, minority children living in US inner cities have increased rates of asthma morbidity and mortality. Factors that contribute to these increased rates are varied and complex, with current evidence suggesting that the environment is an important causative factor. Respiratory morbidity is often the result of allergen... | 0 |
191,640 | Response of arbuscular mycorrhizal mungbean plants to ambient air pollution | Nasim, G; Bajwa, R; Hakeem, A | 2,007 | The experiments were conducted in open top chamber system installed at the University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan. The mungbean (Vigna radiata (L.) Wilczek var.M28) seeds were sown in earthen pots and were kept in filtered air, unfiltered air and ambient air. The ozone concentration was monitor... | 0 |
191,384 | Estimation of ozone concentration in a valley of the alps mountains based on bel-w3 tobacco leaf injury | Laffray, X; Rose, C; Garrec, JP | 2,007 | The level and distribution of tropospheric ozone in remote and wildness areas of the Maurienne valley, a main axis in European transport, were determined during summertime 2004 and 2005. A comprehensive distribution of biological and chemical sensors based on the commonly used ozone sensitive Bel-W3 tobacco and the pas... | 1 |
92,837 | Air pollution, socioeconomic position, and emergency hospital visits for asthma in Seoul, Korea | Kim, SY; O'Neill, MS; Lee, JT; Cho, Y; Kim, J; Kim, H | 2,007 | OBJECTIVE: Some epidemiological literature has observed that air pollution effects on health differed across regional or individual socioeconomic position. This study evaluated whether regional and individual socioeconomic position, as indicated by health insurance premiums, modified the effect of air pollution on hosp... | 0 |
93,256 | Potential confounding of particulate matter on the short-term association between ozone and mortality in multisite time-series studies | Bell, ML; Kim, JY; Dominici, F | 2,007 | BACKGROUND: A critical question regarding the association between short-term exposure to ozone and mortality is the extent to which this relationship is confounded by ambient exposure to particles.OBJECTIVES: We investigated whether particulate matter < 10 and < 2.5 mu m in aerodynamic diameter (PM10 and PM2.5) is a co... | 1 |
199,269 | New approaches to study the relationship between stomatal conductance and environmental factors under Mediterranean climatic conditions | Vitale, M; Anselmi, S; Salvatori, E; Manes, F | 2,007 | The most frequently models used (Ball-Berry and Jarvis-type models) to estimate stomatal conductance (Gs) values have limitations when applied to plants growing in Mediterranean climate. To overcome these limitations, several statistical methodologies (Multiple Linear Regression, Neural Net Analysis (NNA)) were used to... | 0 |
191,499 | Leaf extracellular ascorbate in relation to O3 tolerance of two soybean cultivars | Cheng, FY; Burkey, KO; Robinson, JM; Booker, FL | 2,007 | Soybean [Glycine max (L.) Merr.] cultivars Essex and Forrest that exhibit differences in ozone (03) sensitivity were used in greenhouse experiments to investigate the role of leaf extracellular antioxidants in 03 injury responses. Charcoal-filtered air and elevated 03 conditions were used to assess genetic, leaf age, a... | 1 |
194,630 | Ozone air pollution effects on tree-ring growth, delta(13)C, visible foliar injury and leaf gas exchange in three ozone-sensitive woody plant species | Novak, K; Cherubini, P; Saurer, M; Fuhrer, J; Skelly, JM; Krauchi, N; Schaub, M | 2,007 | We assessed the effects of ambient tropospheric ozone on annual tree-ring growth, delta(13)C in the rings, leaf gas exchange and visible injury in three ozone-sensitive woody plant species in southern Switzerland. Seedlings of Populus nigra L., Viburnum lantana L. and Fraxinus excelsior L. were exposed to charcoal-filt... | 1 |
157,401 | Kinetic Analysis of Competition between Aerosol Particle Removal and Generation by Ionization Air Purifiers | Alshawa, A; Russell, AR; Nizkorodov, SA | 2,007 | Ionization air purifiers are increasingly used to remove aerosol particles from indoor air. However, certain ionization air purifiers also emit ozone. Reactions between the emitted ozone and unsaturated volatile organic compounds (VOC) commonly found in indoor air produce additional respirable aerosol particles in the ... | 0 |
93,046 | A novel air pollution index based on the relative risk of daily mortality associated with short-term exposure to common air pollutants | Cairncross, EK; John, J; Zunckel, M | 2,007 | Communication of the complex relationship between air pollutant exposure and ill health is essential to an air pollution information system. We propose a novel air pollution index (API) system based on the relative risk of the well-established increased daily mortality associated with short-term exposure to common air ... | 0 |
90,348 | Interactive effects of ozone and climate on tree growth and water use in a southern Appalachian forest in the USA | Mclaughlin, SB; Nosal, M; Wullschleger, SD; Sun, G | 2,007 | A lack of data on responses of mature tree growth and water use to ambient ozone (O3 ) concentrations has been a major limitation in efforts to understand and model responses of forests to current and future changes in climate. o Here, hourly to seasonal patterns of stem growth and sap flow velocity were examined in ma... | 1 |
191,472 | Influence of ozone on litter quality and its subsequent effects on the initial structure of colonizing microbial communities | Aneja, MK; Sharma, S; Fleischmann, F; Stich, S; Heller, W; Bahnweg, G; Munch, JC; Schloter, M | 2,007 | Ozone is considered as the main factor in air pollution related to a decline of forest in North America and Europe. In the present study, the effect of changed litter quality, due to ozone stress to trees, on the microbial communities colonizing the subsequent litter was investigated. Litter bag technique using beech a... | 1 |
191,634 | Regulation of the Arabidopsis thaliana vitamin B-6 biosynthesis genes by abiotic stress | Densiow, SA; Rueschhoff, EE; Daub, ME | 2,007 | Vitamin 136 (pyridoxine and its vitamers) plays an essential role as a co-factor for enzymatic reactions and has also recently been implicated in defense against cellular oxidative stress. The biosynthetic pathway was thoroughly characterized in Escherichia coli, however most organisms, including plants, utilize an alt... | 0 |
191,230 | Arctic air pollution: Origins and impacts | Law, KS; Stohl, A | 2,007 | Notable warming trends have been observed in the Arctic. Although increased human-induced emissions of long-lived greenhouse gases are certainly the main driving factor, air pollutants, such as aerosols and ozone, are also important. Air pollutants are transported to the Arctic, primarily from Eurasia, leading to high ... | 0 |
199,300 | Implications of climate change for the stomatal flux of ozone: A case study for winter wheat | Harmens, H; Mills, G; Emberson, LD; Ashmore, MR | 2,007 | Climate change factors such as elevated CO2 concentrations, warming and changes in precipitation affect the stomatal flux of ozone (O-3) into leaves directly or indirectly by altering the stomatal conductance, atmospheric O-3 concentrations, frequency and extent of pollution episodes and length of the growing season. R... | 0 |
191,624 | Profiling secondary metabolites of needles of ozone-fumigated white pine (Pinus strobus) clones by thermally assisted hydrolysis/methylation GC/MS | Shadkami, F; Helleur, RJ; Cox, RM | 2,007 | Plant secondary metabolites have an important role in defense responses against herbivores and pathogens, and as a chemical barrier to elevated levels of harmful air pollutants. This study involves the rapid chemical profiling of phenolic and diterpene resin acids in needles of two (ozone-tolerant and ozone-sensitive) ... | 0 |
90,347 | Interactive effects of ozone and climate on water use, soil moisture content and streamflow in a southern Appalachian forest in the USA | Mclaughlin, SB; Wullschleger, SD; Sun, G; Nosal, M | 2,007 | Documentation of the degree and direction of effects of ozone on transpiration of canopies of mature forest trees is critically needed to model ozone effects on forest water use and growth in a warmer future climate. o Patterns of sap flow in stems and soil moisture in the rooting zones of mature trees, coupled with l... | 1 |
191,458 | Impacts of elevated ozone and nitrogen on growth and photosynthesis of European aspen (Populus tremula) and hybrid aspen (P-tremula x Populus tremuloides) clones | Haikio, E; Freiwald, V; Silfver, T; Beuker, E; Holopainen, T; Oksanen, E | 2,007 | Impacts of elevated tropospheric ozone and soil nitrogen amendment on two native European aspen (Populus tremula L.) and eight hybrid aspen (P. tremula L. x Populus tremuloides Michx.) clones were studied in a free-air ozone exposure system. Potted saplings were exposed to ambient (ca. 20 ppb) or 1.5 x ambient ozone an... | 0 |
191,406 | Fluxes of oxidised and reduced nitrogen above a mixed coniferous forest exposed to various nitrogen emission sources | Neirynck, J; Kowalski, AS; Carrara, A; Genouw, G; Berghmans, P; Ceulemans, R | 2,007 | Concentrations of nitrogen gases (NH3, NO2, NO, HONO and HNO3) and particles (pNH(4) and pNO(3)) were measured over a mixed coniferous forest impacted by high nitrogen loads. Nitrogen dioxide (NO2) represented the main nitrogen form, followed by nitric oxide (NO) and ammonia (NH3). A combination of gradient method (NH3... | 0 |
614,600 | Fungi - An indoor air quality assessment parameter for air-conditioned offices | Mui, KW; Chan, WY; Wong, LT; Hui, PS | 2,007 | Representative assessment parameters are proposed for indoor air quality (IAQ) audit in various strategies and guidelines.' In Hong Kong, assessment of indoor airborne fungi is not incorporated in many IAQ audits of air-conditioned offices, although the exposure to airborne fungi could cause a variety of adverse health... | 0 |
90,702 | The associations between air quality and the number of hospital admissions for acute pain and sickle-cell disease in an urban environment | Yallop, D; Duncan, ER; Norris, E; Fuller, GW; Thomas, N; Walters, J; Dick, MC; Height, SE; Thein, SL; Rees, DC | 2,007 | The clinical severity of sickle-cell disease (SCD) is dependent on genetic and environmental variables. Environmental factors have been poorly studied. We have investigated possible links between air pollution and acute pain in SCD. We retrospectively studied the numbers of daily admissions with acute sickle-cell pain ... | 0 |
90,937 | Ambient air passive sampler for NO-NO2, NOx, SO2, O3, NH3 | null | 2,007 | The Ogawa Sampler is ideal for low-cost air monitoring programs, personal, outdoors and indoors. The only known method of passive simultaneous monitoring of NO & NO2. The Ogawa Sampler is reusable countless times. Only the pre-coated collection pad is expendable. The same sampler is used for all above shown gases. | 1 |
668,901 | Effects of solar UV radiation on aquatic ecosystems and interactions with climate change | Hader, DP; Kumar, HD; Smith, RC; Worrest, RC | 2,007 | Recent results continue to show the general consensus that ozone-related increases in UV-B radiation can negatively influence many aquatic species and aquatic ecosystems (e.g., lakes, rivers, marshes, oceans). Solar UV radiation penetrates to ecological significant depths in aquatic systems and can affect both marine a... | 1 |
197,805 | Extraction and analysis of sterols in biological matrices by high performance liquid chromatography electrospray ionization mass spectrometry | Mcdonald, JG; Thompson, BM; Mccrum, EC; Russell, DW | 2,007 | We describe the development of a high performance liquid chromatography mass spectrometry (HPLC-MS) method that allows the identification and quantitation of sterols in mammalian cells and tissues. Bulk lipids are extracted from biological samples by a modified Bligh/Dyer procedure in the presence of eight deuterated s... | 0 |
188,457 | Chromosomal aberrations in environmentally exposed population in relation to metabolic and DNA repair genes polymorphisms | Sram, R; Beskid, O; Binkova, B; Chvatalova, I; Lnenickova, Z; Milcova, A; Solansky, I; Tulupova, E; Bavorova, H; Ocadlikova, D; Farmer, PB | 2,007 | The capital city of Prague is one of the most polluted
localities of the Czech Republic. Therefore, the effect of exposure to carcinogenic polycyclic
aromatic hydrocarbons (c-PAHs) adsorbed onto respirable air particles (< 2.5 mu m) on chromosomal
aberrations was studied in a group of policemen (males, aged 22-50... | 0 |
651,849 | Ultraviolet-B irradiation enhances melanoma cell motility via induction of autocrine interleukin 8 secretion | Gebhardt, C; Averbeck, M; Viertel, A; Kauer, F; Saalbach, A; Anderegg, U; Simon, JC | 2,007 | Ultraviolet radiation (UVR) is known to be involved in the initiation and progression of malignant melanoma. Many studies have focused on the initiation of melanoma, but less is known about the effect of UVR on established tumor cells. Here, we show that after ultraviolet-B (UVB) irradiation, melanoma cells (MM) are ab... | 0 |
191,395 | Expression of the rice cytoplasmic cysteine synthase gene in tobacco reduces ozone-induced damage | Choi, YE; Kwon, KW; Lee, JC; Woo, SY | 2,007 | Cysteine serves as a precursor for the synthesis of various sulfur-containing metabolites, and the cysteine synthase (CS) gene plays a central role in the sulfur cycle in nature. In the present study, rcs1, a cytosolic CS gene of rice, was introduced into the genome of tobacco (Nicotiana tabacum). The tolerance of wild... | 0 |
180,148 | Assessment of yield losses in tropical wheat using open top chambers | Rai, R; Agrawal, M; Agrawal, SB | 2,007 | The present study deals with the evaluation of effects of ambient gaseous air pollution on wheat (Triticum aestivum L. var. HUW-234) growing in a suburban area situated in eastern Gangetic plain of India, using open top chambers. Eight hourly air monitoring was conducted for ambient concentrations of SO2, NO2 and O3 in... | 0 |
195,715 | Environmental factors and developmental outcomes in the lung | Kajekar, R | 2,007 | The developing lung is highly susceptible to damage from exposure to environmental toxicants particularly due to the protracted maturation of the respiratory system, extending from the embryonic phase of development in utero through to adolescence. The functional organization of the lungs requires a coordinated ontogen... | 0 |
628,545 | Transient receptor potential A1 mediates acetaldehyde-evoked pain sensation | Bang, S; Kim, KY; Yoo, S; Kim, YG; Hwang, SW | 2,007 | Six transient receptor potential (TRP) ion channels expressed in the sensory afferents play an important role as body thermosensors and also as peripheral pain detectors. It is known that a number of natural compounds specifically activate those sensory neuronal TRP channels, and a well-known example is cinnamaldehyde ... | 1 |
191,459 | Impacts of ozone on trees and crops | Felzer, BS; Cronin, T; Reilly, JM; Melilloa, JM; Wang, XD | 2,007 | In this review article, we explore how surface-level ozone affects trees and crops with special - emphasis on consequences for productivity and carbon sequestration. Vegetation exposure to ozone reduces photosynthesis, growth, and other plant functions. Ozone formation in the atmosphere is a product of NOx which are al... | 0 |
191,357 | Effects of long-term, free-air ozone fumigation on the cytokinin content of mature beech trees | Winwood, J; Pate, AE; Price, AJ; Hanke, DE | 2,007 | We present the results of a study of the effects of chronic exposure to elevated ozone on the cytokinins of mature beech trees. Methods for analysing the cytokinin (CK) content of beech (Fagus sylvatica) were developed using seven enzyme-linked immunosorbent assays (ELISAs). Samples taken during 2003 and 2004 from 10 m... | 0 |
596,421 | Study on effect and mechanism of sodium ferulate in preventing and treating ozone induced lung injury in mice | Wang, DJ; Zhou, WD; Dai, XJ; Yan, Y | 2,007 | OBJECTIVE: To study the effect and mechanism of sodium ferulate (SF) in preventing and treating ozone (O3) induced lung oxidative injury in mice. METHODS: Lung oxidative injury model mice were established by making them inhale O3. The activity of anti-oxidase and membranous microviscosity in epithelial cells in the lun... | 0 |
90,732 | Nanomaterials induce oxidized low-density lipoprotein cellular uptake in macrophages and platelet aggregation | Yasuharu, N; Naoharu, I | 2,007 | BACKGROUND: Nanomaterials have numerous potential benefits for society, but the potential hazards of nanomaterials on human health are poorly understood. Nanomaterials are known to pass into the circulatory system in humans, causing vascular injuries that might play a role in the development of atherosclerosis. The pre... | 0 |
93,128 | Studying the effect on system preference by varying coproduct allocation in creating life-cycle inventory | Curran, MA | 2,007 | How one models the input and output data for a life-cycle assessment (LCA) can greatly affect the results. Although much attention has been paid to allocation methodology by researchers in the field, specific guidance is still lacking. Earlier research focused on the effects of applying various allocation schemes to in... | 0 |
152,608 | Variations in black carbon aerosol, carbon monoxide and ozone over an urban area of Hyderabad, India, during the forest fire season | Badarinath, KVS; Kumar Kharol, S; Kiran Chand, TR; Parvathi, YG; Anasuya, T; Jyothsna, AN | 2,007 | Urban air quality monitoring plays an important role due to high concentration of particle sources and a large population exposed to elevated particle concentrations. Continuous ground based measurements of black carbon (BC) aerosol; carbon monoxide (CO) and ozone (O3) were carried out in the tropical urban region of H... | 0 |
669,178 | Scientific assessment of ozone depletion: 2006 | null | 2,007 | null | 0 |
93,270 | Short-term effects of ozone air pollution on ischaemic stroke occurrence: A case-crossover analysis from a 10-year population-based study in Dijon, France | Henrotin, JB; Besancenot, JP; Bejot, Y; Giroud, M | 2,007 | Objective: To evaluate the association between air pollutants and the occurrence of acute stroke from 10-year population -based study.Methods: The daily stroke count was obtained from Dijon Stroke Register between March 1994 and December 2004. The register recorded all first-ever strokes among residents of Dillon (150 ... | 1 |
191,597 | Photosynthesis and yield responses of ozone-polluted winter wheat to drought | Xu, H; Biswas, DK; Li, WD; Chen, SB; Zhang, L; Jiang, GM; Li, YG | 2,007 | Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis and then was either well irrigated with soil water content (SWC) of 80-85 % (O-3+W) or drought treated (SWC 35-40 %, 03 1)). Short-term ozone exposure significantly decreased irradiance-saturated net photosy... | 0 |
199,780 | Establishment and persistence of common ragweed (Ambrosia artemisiifolia L.) in disturbed soil as a function of an urban?rural macro-environment | Ziska, LH; George, K; Frenz, DA | 2,007 | No data are available on whether rising carbon dioxide concentration [CO2] or increased air temperature can alter the establishment and persistence of common ragweed (Ambrosia artemisiifolia L.) within a plant community following soil disturbance. To determine ragweed longevity, we exposed disturbed soil with a common ... | 0 |
191,420 | Gas exchange and antioxidative compounds in young beech trees under free-air ozone exposure and comparisons to adult trees | Herbinger, K; Then, C; Haberer, K; Alexou, M; Low, M; Remele, K; Rennenberg, H; Matyssek, R; Grill, D; Wieser, G; Tausz, M | 2,007 | Three-year-old beech (Fagus sylvatica) seedlings growing in containers were placed into the sun and shade crown of a mature beech stand exposed to ambient (1 x O-3) and double ambient (2 x O-3) ozone concentrations at a free-air exposure system ("Kranzberg Forst", Germany). Pigments, alpha-tocopherol, glutathione, asco... | 0 |
191,259 | CASIROZ: Root parameters and types of ectomycorrhiza of young beech plants exposed to different ozone and light regimes | Zeleznik, P; Hrenko, M; Then, C; Koch, N; Grebenc, T; Levanic, T; Kraigher, H | 2,007 | Tropospheric ozone (O-3) triggers physiological changes in leaves that affect carbon source strength leading to decreased carbon allocation below-ground, thus affecting roots and root symbionts. The effects of O-3 depend on the maturity-related physiological state of the plant, therefore adult and young forest trees mi... | 0 |
191,356 | Effects of long-term free-air ozone fumigation on delta N-15 and total N in Fagus sylvatica and associated mycorrhizal fungi | Haberer, K; Grebenc, T; Alexou, M; Gessler, A; Kraigher, H; Rennenberg, H | 2,007 | Patterns of nitrogen (N) isotope composition (delta N-15) and total N contents were determined in leaves, fine roots, root-associated ectomycorrhizal fungi (ECM) of adult beech trees (Fagus sylvatica), and soil material under ambient (1 x O-3) and double ambient (2 x O-3) atmospheric ozone concentrations over a period ... | 0 |
608,032 | Detection of stratospheric ozone intrusions by windprofiler radars | Hocking, WK; Carey-Smith, T; Tarasick, DW; Argall, PS; Strong, K; Rochon, Y; Zawadzki, I; Taylor, PA | 2,007 | Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more, covering all branches of science and how science impacts | 1 |
191,487 | Internal conductance to CO2 transfer of adult Fagus sylvatica: Variation between sun and shade leaves and due to free-air ozone fumigation | Warren, CR; Low, M; Matyssek, R; Tausz, M | 2,007 | Two separate objectives were considered in this study. We examined (1) internal conductance to CO2 (g(i)) and photosynthetic limitations in sun and shade leaves of 60-year-old Fagus sylvatica, and (2) whether free-air ozone fumigation affects gi and photosynthetic limitations. gi and photosynthetic limitations were est... | 0 |
120,673 | Reactions between ozone and building products: Impact on primary and secondary emissions | Nicolas, M; Ramalho, O; Maupetit, F | 2,007 | Reactions of ozone on common building products were studied in a dedicated emission test chamber system. Fourteen new and unused products were exposed to 100-160 ppb of ozone at 23 degrees C and 50% RH during 48 h experiments. Ozone deposition velocities calculated at steady state were between 0.003 cm s(-1) (alkyd pai... | 0 |
191,635 | The relationship between isoprene emission rate and dark respiration rate in white poplar (Populus alba L.) leaves | Loreto, F; Centritto, M; Barta, C; Calfapietra, C; Fares, S; Monson, RK | 2,007 | In past studies, it was hypothesized that reductions in chloroplast isoprene emissions at high atmospheric CO2 concentrations were caused by competition between cytosolic and mitochondrial processes for the same substrate, possibly phosphoenolpyruvate (PEP). We conducted field and laboratory experiments using leaves of... | 0 |
668,896 | Interactive effects of solar UV radiation and climate change on biogeochemical cycling | Zepp, RG; Erickson, DJ; Paul, ND; Sulzberger, B | 2,007 | This report assesses research on the interactions of UV radiation (280-400 nm) and global climate change with global biogeochemical cycles at the Earth's surface. The effects of UV-B (280-315 nm), which ate dependent on the stratospheric ozone layer, on biogeochemical cycles are often linked to concurrent exposure to U... | 1 |
90,715 | Respiratory and cardiovascular functions among smoking and nonsmoking girls from two regions with different air pollution degree | Turnovska, TH; Mandadzhieva, SK; Marinov, BI; Kostianev, SS | 2,007 | AIM: The aim of the present study was to analyze the respiratory and cardiovascular functions among smoking and nonsmoking girls attending two schools situated in regions with different levels of air pollution. The characteristic of air pollution is based on the data gathered by stations 1 and 2 belonging to the Unifor... | 0 |
195,356 | Effects of stratospheric ozone depletion and climate change on materials damage | Andrady, AL; Hamid, HS; Torikai, A | 2,007 | Nanoscale inorganic fillers with average particle sizes smaller by an order of magnitude or more compared to those of conventional fillers are becoming commercially available. The efficacy of these fillers used in polymer formulations and particularly their effect as photostabilizers are beginning to be investigated. T... | 0 |
600,123 | Evaluation of the contact and respiratory sensitization potential of volatile organic compounds generated by simulated indoor air chemistry | Anderson, SE; Wells, JR; Fedorowicz, A; Butterworth, LF; Meade, BJ; Munson, AE | 2,007 | Up to 60 million people working indoors experience symptoms such as eye, nose and throat irritation, headache, and fatigue. Investigations into these complaints have ascribed the effects to volatile organic compounds (VOCs) emitted from building materials, cleaning formulations, or other consumer products. New compound... | 1 |
191,562 | Ozone and forests in South-Western Europe | Ferretti, M; Bussotti, F; Calatayud, V; Sanz, MJ; Schaub, M; Krauchi, N; Petriccione, B; Sanchez-Pena, G; Ulrich, E | 2,007 | The paper provides basic information about background, objectives and structure of O3SWE (Ozone at the permanent monitoring plots in South-Western Europe), an international co-operative project aimed at evaluating O-3 concentrations, cumulative exposure, uptake and effects on forest vegetation in four countries of Sout... | 0 |
141,092 | An information theoretic perspective on mesoscale seasonal variations in ground-level ozone | Fleming, SW | 2,007 | Relatively little prior use has been made of information theory in air quality analysis. This paper explores whether basic, but formal, quantitative measures of information content might yield fresh perspectives on seasonal variations in the ground-level ozone concentration field across the lower Fraser Valley (LFV), B... | 0 |
90,714 | Ambient air pollution and daily pediatric hospitalizations for asthma | Magas, OK; Gunter, JT; Regens, JL | 2,007 | GOAL, SCOPE AND BACKGROUND: A series of severe air pollution episodes in Europe and North America prior to 1960 have focused scientific and regulatory attention on the adverse effects of air pollution on human health. As a consequence of significant reductions in ambient air pollution levels in the intervening years, s... | 0 |
148,869 | Evaluation of air quality models for the simulation of a high ozone episode in the Houston metropolitan area | Byun, DW; Kim, ST; Kim, SB | 2,007 | A high ozone event in the Houston?Galveston?Brazoria area was utilized to study the shortcomings of the current air quality models. To improve the baseline simulations with the Comprehensive Air quality Model with Extensions (CAMx) for developing the state implementation plan, the Texas Commission on Environmental Qual... | 0 |
361,727 | Precise and accurate determination of lead isotope ratios in mining wastes by ICP-QMS as a tool to identify their source | Margui, E; Iglesias, M; Queralt, I; Hidalgo, M | 2,007 | A methodology for a precise and accurate determination of lead isotope ratios in mining wastes by inductively coupled plasma quadrupole-based mass spectrometry (ICP-QMS) has been developed. The study of instrumental bias factors led to the conclusion that internal correction to compensate mass discrimination is require... | 0 |
191,393 | Evidence that branch cuvettes are reasonable surrogates for estimating O3 effects in entire tree crowns | Then, C; Herbinger, K; Blumenrother, M; Haberer, K; Heerdt, C; Oswald, W; Rennenberg, H; Grill, D; Tausz, M; Wieser, G | 2,007 | Within the scope of quantifying ozone (O-3) effects on forest tree crowns it is still an open question whether cuvette branches of adult trees are reasonable surrogates for O-3 responses of entire tree crowns and whether twigs exhibit autonomy in defense metabolism in addition to carbon autonomy. Therefore, cuvette-enc... | 0 |
694,425 | Role of colloids in heavy metal transfer through a retention-infiltration basin Secondary Title: Water Science and Technology | Durin, B; Bchet, B; Legret, M; Cloirec, PL | 2,007 | Runoff waters from a main bridge near Nantes (France), surface waters and pore waters in the infiltration basin collecting runoff were analysed after filtration and ultrafiltration to investigate the role of colloids in the transfer of trace metals (Zn, Cu and Pb) from the road to the groundwater. The role of the basin... | 0 |
191,691 | Synopsis of the CASIROZ case study: Cabon sink strength of Fagus sylvatica L. in a changing environment - Experimental risk assessment of mitigation by chronic ozone impact | Matyssek, R; Bahnweg, G; Ceulemans, R; Fabian, P; Grill, D; Hanke, DE; Kraigher, H; Osswald, W; Rennenberg, H; Sandermann, H; Tausz, M; Wieser, G | 2,007 | Databases are needed for the ozone (O-3) risk assessment on adult forest trees under stand conditions, as mostly juvenile trees have been studied in chamber experiments. A synopsis is presented here from an integrated case study which was conducted on adult Fagus sylvatica trees at a Central-European forest site. Emplo... | 0 |
191,852 | Photosynthesis, chlorophyll fluorescence, and yield of snap bean (Phaseolus vulgaris L.) genotypes differing in sensitivity to ozone | Flowers, MD; Fiscus, EL; Burkey, KO; Booker, FL; Dubois, JJB | 2,007 | Understanding the impact of pollutant ozone (O3) is a concern for agricultural production. This work was undertaken as the first comparative study of the effects of O3 on the photosynthetic processes and yield of three snap bean (Phaseolus vulgaris L.) genotypes with known differences in sensitivity to O3 (S156, R123 a... | 1 |
651,840 | Cell type and DNA damage specific response of human skin cells to environmental agents | D'Errico, M; Lemma, T; Calcagnile, A; De Santis, LP; Dogliotti, E | 2,007 | The epidermis has evolved to provide a barrier against the environment, which is essential for survival. This barrier is constituted and continuously regenerated by terminally differentiating keratinocytes. Here, we summarize the main features of the response to UVB and oxidizing agents of human keratinocytes and compa... | 0 |
191,417 | Free-air exposure systems to scale up ozone research to mature trees | Karnosky, DF; Werner, H; Holopainen, T; Percy, K; Oksanen, T; Oksanen, E; Heerdt, C; Fabian, P; Nagy, J; Heilman, W; Cox, R; Nelson, N; Matyssek, R | 2,007 | Because seedlings and mature trees do not necessarily respond similarly to 03 stress, it is critically important that exposure systems be developed that allow exposure of seedlings through to mature trees. Here we describe three different 03 Free-Air Exposure Systems that have been used successfully for exposure at all... | 0 |
90,349 | Linking ozone uptake and defense towards a mechanistic risk assessment for forest trees [letter] | Wieser, G; Matyssek, R | 2,007 | null | 0 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.