Relevant bibliographies by topics / Contamination biomarkes. eng

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  3. Conference papers

Academic literature on the topic 'Contamination biomarkes. eng'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Contamination biomarkes. eng"

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Zech, M., S. Kreutzer, T. Goslar, et al. "Technical Note: <i>n</i>-Alkane lipid biomarkers in loess: post-sedimentary or syn-sedimentary?" Biogeosciences Discussions 9, no. 7 (2012): 9875–96. http://dx.doi.org/10.5194/bgd-9-9875-2012.

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Abstract. There is an ongoing discussion whether n-alkane biomarkers – and organic matter (OM) from loess in general – reflect a syn-sedimentary paleoenvironmental and paleoclimate signal or whether they are significantly a post-sedimentary feature contaminated by root-derived OM. We present first radiocarbon data for the n-alkane fraction of lipid extracts and for the first time luminescence ages for the Middle to Late Weichselian loess-paleosol sequence of Gleina in Saxony, Germany. Comparison of these biomarker ages with sedimentation ages as assessed by optically stimulated luminescence (O
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Vieira, Carlos Eduardo Delfino, Mayara da Silva Almeida, Bruno Ambrssio Galindo, Lindalva Pereira, and Claudia Bueno dos Reis Martinez. "Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas." Neotropical Ichthyology 12, no. 1 (2014): 153–64. http://dx.doi.org/10.1590/s1679-62252014000100017.

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Aquatic ecosystems in areas with intense agricultural activity are subject to pesticide contamination, which may compromise the health of the fish. In order to verify the quality of the water and the possible effects of pesticides on fish, a method that combines different biomarker responses into an index named "integrated biomarker response" (IBR) was applied using the biological alterations in the Neotropical fish Astyanax altiparanae. Fish were maintained in situ at five sites along a stream that runs in an agricultural area and in a stream within a forest fragment, considered a reference s
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Leeming, R., N. Bate, R. Hewlett, and P. D. Nichols. "Discriminating faecal pollution: a case study of stormwater entering Port Phillip Bay, Australia." Water Science and Technology 38, no. 10 (1998): 15–22. http://dx.doi.org/10.2166/wst.1998.0369.

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This investigation was designed to provide preliminary information to the Environment Protection Authority concerning the input of faecal matter to stormwater drains in the Rippleside area of Geelong, Victoria. Results derived from the combined use of sterol biomarkers (e.g. coprostanol and 24-ethylcoprostanol) and four sub-groups of bacterial indicators (e.g. thermotolerant coliforms, E. coli, faecal streptococci and enterococci) indicated that during wet weather, all sites sampled were affected by significant human faecal contamination. Ratios of coprostanol to bacterial indicators were simi
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Gabriel, Fabrício Â., Rachel Ann Hauser-Davis, Lorena Soares, et al. "Contamination and oxidative stress biomarkers in estuarine fish following a mine tailing disaster." PeerJ 8 (October 28, 2020): e10266. http://dx.doi.org/10.7717/peerj.10266.

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Background The Rio Doce estuary, in Brazil, was impacted by the deposition of iron mine tailings, caused by the collapse of a dam in 2015. Based on published baseline datasets, the estuary has been experiencing chronic trace metal contamination effects since 2017, with potential bioaccumulation in fishes and human health risks. As metal and metalloid concentrations in aquatic ecosystems pose severe threats to the aquatic biota, we hypothesized that the trace metals in estuarine sediments nearly two years after the disaster would lead to bioaccumulation in demersal fishes and result in the bios
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Stout, Scott A., and Glenn C. Millner. "PROTOCOL FOR ASSESSING THE EXTENT OF CRUDE OIL SPILLED IN A RESIDENTIAL AREA FOLLOWING HURRICANE KATRINA, ST. BERNARD PARISH, LOUISIANA." International Oil Spill Conference Proceedings 2008, no. 1 (2008): 279–78. http://dx.doi.org/10.7901/2169-3358-2008-1-279.

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ABSTRACT Floodwater associated with the Hurricane Katrina'S storm surge (August 29, 2005) displaced and damaged a 250,000 barrel above ground storage tank at Murphy Oil Corporation'S Meraux Refinery in Chalmette, Louisiana. Crude oil was released and was dispersed into the nearby and evacuated residential and commercial area by the retreating floodwaters. The assessment, which began September 18, involved biased sampling and “chemical fingerprinting” of interior and exterior wipe samples (from the visually-evident “bathtub rings” on structures) and interior and exterior sediments from over 600
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Roser, D. J., N. Ashbolt, G. Ho, et al. "Hydrogen sulphide production tests and the detection of groundwater faecal contamination by septic seepage." Water Science and Technology 51, no. 10 (2005): 291–300. http://dx.doi.org/10.2166/wst.2005.0378.

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The ‘H2S test’ is being advanced for microbiological water quality testing where conventional coliform based methods are impractical or too expensive. It involves ambient temperature incubation of water samples with nutrient formulated to generate hydrogen sulphide when ‘faecal’ bacteria are present. Recently a WHO review identified several concerns including the limited number of comparative studies, formulation variability, and false positives and negatives. In response we have compared the H2S test's ability to detect and quantify faecal contamination in an aquifer impacted by septic tank l
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Blaise, Christian, and François Gagné. "Aquatic ecotoxicology: what has been accomplished and what lies ahead? An Eastern Canada historical perspective." Journal of Xenobiotics 3, no. 1 (2013): 8. http://dx.doi.org/10.4081/xeno.2013.e8.

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Our recent history shows that degradation of aquatic ecosystems essentially stems from industrialization, urbanization and increasing human populations. After a first industrial boom in the late 19th century, contamination pressures on receiving waters now appear to be continual because of expanding economies and technologies developing at the planetary scale. Given the diversity of issues, problems and challenges facing water quality today because of complex waste and chemical discharges into waterways, aquatic ecotoxicology has blossomed with time into a more mature discipline of the environ
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Couillard, C. M., P. V. Hodson, and M. Castonguay. "Correlations between pathological changes and chemical contamination in American eels, Anguilla rostrata, from the St. Lawrence River." Canadian Journal of Fisheries and Aquatic Sciences 54, no. 8 (1997): 1916–27. http://dx.doi.org/10.1139/f97-097.

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American eel (Anguilla rostrata) from the St. Lawrence River are heavily contaminated with chemicals that may be associated with increased incidence of diseases and reproductive impairment. The relationship between tissue mirex concentration and body mass was used to separate eels into two groups: the proportion of eels migrating from contaminated areas (Lake Ontario and upper St. Lawrence River) increased as the migration season progressed. Vertebral malformations and basophilic foci in the liver (preneoplastic lesions) were more frequent at the end of the migratory season, when the eels were
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Berthod, Camille, Marie-Hélène Bénard-Déraspe, Jean-François Laplante, et al. "Hemocyte Health Status Based on Four Biomarkers to Assess Recovery Capacity in American Lobster (Homarus americanus) after Exposure to Marine Diesel and Diluted Bitumen." Journal of Marine Science and Engineering 9, no. 4 (2021): 370. http://dx.doi.org/10.3390/jmse9040370.

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The growing transportation of petroleum products pose a significant risk of marine diesel or diluted bitumen (dilbit) spills at sea. Despite the economic importance of the American lobster, there have been few studies assessing the impact study of such a spill on their population. In the lobster industry, lobster quality is monitored according to the Brix index of hemolymph. In our research, the effectiveness of three other biomarkers operative in the industry was assessed in hemolymph during contamination (over 96 h) by marine diesel and dilbit (Cold Lake Blend; CLB), as well as in the subseq
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Oseni, Kadiri. "Respiratory Surveillance and Ca2+-ATPase Enzyme Activity Studies of Clarias gariepinus Exposed to Acute Toxicity of Cyanide." International Letters of Natural Sciences 50 (January 2016): 62–69. http://dx.doi.org/10.18052/www.scipress.com/ilns.50.62.

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Potassium cyanide, a highly contaminating and toxic aquatic ecosystems pollutant was investigated for acute toxicity on the freshwater fish Clariasgariepinus. Its effect on the Ca2+ -ATPase activities in the liver, gills, muscle and intestinal tissues and oxygen consumption index was studied. Short-term toxicity test was carried out by static renewal bioassay test over a 96 h period using a lethal concentration (LC50) value of 0.361mg/mL. Potassium cyanide was highly toxic to the animal tested. Results reveal that normal respiratory activity (O2 consumption) of the fish was significantly affec
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Dissertations / Theses on the topic "Contamination biomarkes. eng"

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Margarido, Tatiana Cristina Stefani. "Biomarcadores bioquímicos de contaminação em girinos de anfíbios anuros expostos a Regent®800WG (Fipronil) /." São José do Rio Preto : [s.n.], 2011. http://hdl.handle.net/11449/97763.

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Orientador: Eduardo Alves de Almeida<br>Banca: Pio Colepicolo<br>Banca: Claudia Regina Bonini Domingos<br>Resumo: Regent®800WG é um inseticida do grupo fenilpirazol, cujo componente ativo é o fipronil. Trata-se de um dos principais praguicidas utilizados no cultivo da cana-de-açúcar na região de São José do Rio Preto, e seu amplo uso está relacionado à sua capacidade de eliminar inclusive pragas resistentes a organofosforados e piretróides. Porém são pouco conhecidos os efeitos tóxicos do Regent®800WG sobre organismos não-alvo, tais como girinos de anfíbios anuros. É possível que esse composto
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Silva, Daniele Caetano da. "Variação em biomarcadores bioquímicos de contaminação em Tilápias do Nilo (Oreochromis niloticus) de diferentes portes /." São José do Rio Preto : [s.n.], 2012. http://hdl.handle.net/11449/97772.

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Orientador: Eduardo Alves de Almeida<br>Banca: Eny Maria Vieira<br>Banca: Cláudia Regina Bonini Domingos<br>Resumo: Estudos de alterações bioquímicas em espécies aquáticas expostas a poluentes são abundantes na literatura. Todavia, existem poucas pesquisas voltadas a compreender de que forma animais de uma mesma espécie, mas com pesos diferentes, respondem a contaminantes. Então, identificar a influência deste fator nas respostas de peixes a contaminantes ambientais é extremamente importante para estudos ecotoxicológicos. No presente estudo, tilápias do Nilo de diferentes portes (jovens, adult
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Rodrigues, Aline Cristina Ferreira. "Estudo de variações bioquímicas e morfológicas induzidas por peticidas orgnofosforado e carbamato em tilápia (oreochromis niloticus) e cascudo (Pterygoplichthys anisitsi), como biomarcadores de contamincação ambiental /." São José do Rio Preto : [s.n.], 2009. http://hdl.handle.net/11449/87594.

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Orientador: Eduardo Alves de Almeida<br>Banca: Maria Aparecida Marin Morales<br>Banca: Glória Elisa Florido Mendes<br>Resumo: Os contaminantes ambientais são relevantes no contexto ecotoxicológico devido a seus efeitos citotóxicos e carcinogênicos nos organismos não-alvos. A análise de biomarcadores bioquímicos constitui uma ferramenta eficiente nos estudos de avaliação de risco e impacto ambiental, pois conseguem realizar a detecção precoce dos efeitos nos organismos em virtude da exposição aos poluentes ambientais. O Brasil está entre os maiores consumidos de agrotóxicos do mundo e nesse con
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Conference papers on the topic "Contamination biomarkes. eng"

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Jansik, Danielle, Dawn M. Wellman, Shas V. Mattigod, et al. "Foam: Novel Delivery Technology for Remediation of Vadose Zone Environments." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59019.

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Deep vadose zone environments can be a primary source and pathway for contaminant migration to groundwater. These environments present unique characterization and remediation challenges that necessitate scrutiny and research. The thickness, depth, and intricacies of the deep vadose zone, combined with a lack of understanding of the key subsurface processes (e.g., biogeochemical and hydrologic) affecting contaminant migration, make it difficult to create validated conceptual and predictive models of subsurface flow dynamics and contaminant behavior across multiple scales. These factors also mak
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