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| Registros recuperados: 33 | |
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| Vázquez Luna, Dinora. |
| En México, el desarrollo basado en la industria petrolera ha afectado los suelos y recursos naturales del sureste del país; sin embargo, no hay estudios que vinculen sus efectos sobre el desarrollo equitativo de los habitantes en zonas contaminadas. Por ello, el objetivo del trabajo fue analizar desde la perspectiva de género, los efectos sociales sobre el desarrollo equitativo de las familias, en cuatro zonas de los ejidos de Humanguillo, Tabasco (Rovirosa, El Paraíso, La Ceiba y Gurría), que se ubican a una distancia de 0.5, 2.5, 7 y 12 kilómetros al sur la petroquímica La Venta. Se realizaron encuestas con enfoque de género y de salud, donde las unidades de análisis fueron las familias. Se realizaron análisis de suelos para determinar los efectos de la... |
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Palavras-chave: Género; Asma; Contaminación ambiental; Hidrocarburos; Alergias; Gender; Asthma; Environmental pollution; Hydrocarbons; Allergies; Doctorado; Desarrollo Rural. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/422 |
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| Vázquez Luna, Dinora. |
| En México, el desarrollo basado en la industria petrolera ha afectado los suelos y recursos naturales del sureste del país; sin embargo, no hay estudios que vinculen sus efectos sobre el desarrollo equitativo de los habitantes en zonas contaminadas. Por ello, el objetivo del trabajo fue analizar desde la perspectiva de género, los efectos sociales sobre el desarrollo equitativo de las familias, en cuatro zonas de los ejidos de Humanguillo, Tabasco (Rovirosa, El Paraíso, La Ceiba y Gurría), que se ubican a una distancia de 0.5, 2.5, 7 y 12 kilómetros al sur la petroquímica La Venta. Se realizaron encuestas con enfoque de género y de salud, donde las unidades de análisis fueron las familias. Se realizaron análisis de suelos para determinar los efectos de la... |
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Palavras-chave: Género; Asma; Contaminación ambiental; Hidrocarburos; Alergias; Gender; Asthma; Environmental pollution; Hydrocarbons; Allergies; Doctorado; Desarrollo Rural. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/422 |
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| Ferreira Araujo, Daniel; Ponzevera, Emmanuel; Briant, Nicolas; Knoery, Joel; Bruzac, Sandrine; Sireau, Teddy; Brach-papa, Christophe. |
| Toulon bay is severely impacted by metal contamination induced by past and recent naval activities. In this work, Cu, Zn and Pb isotope compositions and elemental concentrations of fifty-five surface sediments were determined in order to map the spatial distribution of anthropogenic and natural sources along this land-sea continuum. Two sub-systems of Toulon Bay, the Small and Large bays, showed well-marked patterns on metal contamination levels and isotope signatures for Cu and Pb. The Small bay had the highest metal concentrations, and displayed average Pb and Cu isotope compositions of 1.1664 ± 0.0043 (1s, expressed as 206Pb/207Pb ratios) and −0.17 ± 0.19‰ (1s, expressed as δ65CuNIST values), respectively. It contrasted with the Large bay, with moderate... |
| Tipo: Text |
Palavras-chave: Metal isotopes; Isotope tracers; Geochemical isotopes; Environmental pollution; Coastal pollution; Toulon bay. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00566/67784/67226.pdf |
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| Rao,M.A; Scelza,R; Scotti,R; Gianfreda,L. |
| Environmental pollution is growing more and more due to the indiscriminate and frequently deliberate release of hazardous, harmful substances. Research efforts have been devoted to develop new, low-cost, low-technology, eco-friendly treatments capable of reducing and even eliminating pollution in the atmosphere, the hydrosphere and soil environments. Among biological agents, enzymes have a great potentiality to effectively transform and detoxify polluting substances because they have been recognized to be able to transform pollutants at a detectable rate and are potentially suitable to restore polluted environments. This brief review will examine some classes of pollutants and enzymes capable of transforming them effectively into innocuous products.... |
| Tipo: Journal article |
Palavras-chave: Pollutants; Enzymes; Environmental pollution; Bioremediation. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100008 |
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| Car, J.; Dizdarevic, T.. |
| The environmental conditions in the Idrija Mercury Mine and its broader surroundings were strongly affected in the first half of the 19th century by two disastrous pit fires. The fire could only be extinguished by flooding of the pit. The consequences of such flooding was extensive poisoning with mercury vapours, not only among those miners who participated in the fire extinguishing effort and later in the rehabilitation of the pit, but also among the inhabitants of Idrija. During rehabilitation works, the highly polluted water was discharged directly into the Idrijca River, killing all the fish species thriving there. After 1835 the Mine gradually intensified its production. The dumping of increasingly larger quantities of smelting wastes directly into... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Mercury mine; Environmental pollution; Indemnity; 43.56. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/215392 |
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| 坂本, 直久; 谷, 昌幸; 小池, 正徳; 倉持, 勝久; 岸本, 正; 梅津, 一孝; Sakamoto, Naohisa; Tani, Masayuki; Koike, Masanori; Kishimoto, Tadashi; Umetsu, Kazutaka; Kuramochi, Katsuhisa. |
| 本研究では，貯留中の乳牛ふん尿スラリーから発生する環境負荷ガスを低減するため，化学肥料を撥水加工した革新的なカバー資材を開発し，その抑制効果の評価とメカニズムについて検証した。スラリーは，メタン発酵前と発酵後の2種類を用いた。資材は，スラリー上に浮かべることを可能とし，また農地還元する上で不足する植物養分を補給するために，微粉砕した化学肥料に疎水性シリカを混合することにより調製した。実験室規模で13日間のガス発生量を測定した。アンモニアやメタンの積算発生量はメタン発酵後のスラリーの方が発酵前のそれよりも高かった。本資材を供試することにより，スラリーから発生するガスの吸着またはスラリーの発酵挙動が変化し，アンモニアやメタンの発生量が著しく減少した。さらに，資材の一部が溶解してスラリーの養分量が増加するので，本技術は農作業の効率化が図られるとともに，畜産廃棄物の有効利用に役立つと考えられる。 The objectives of this study were to verify the effectiveness in reducing polluting gas emissions of novel methods for covering dairy slurry by using various types of hydrophobic fertilizers and to evaluate the mechanisms for reducing gas emissions from this slurry before and after methane fermentation. The hydrophobic fertilizers were prepared by mixing... |
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Palavras-chave: 畜産廃棄物; スラリー貯留槽; アンモニア; 温室効果ガス; 環境汚染; Animal waste; Slurry store; Ammonia; Greenhouse gas; Environmental pollution. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2832 |
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| Adekanbi, E.O.; Okoye, B.C.O.; Ajao, E.A.. |
| The state of pollution in the Lagos lagoon was examined by a field survey of twenty-six sites (stations) in the dry and wet season in 1985. Some selected sites were further re-examined in the same period in 1986. The sediment trace metals and total hydrocarbons were analysed. The relationship between non residual and residual trace elements was examined. For both years of study, total trace metal levels (mg/kg) fell in the ranges: Cu,1.9 – 132.4, Cr, 2.9 – 167; 7.8 – 830. 6; Ph, 1.6 – 483.1 and Cd, 0.04 – 15.5. Total hydrocarbon concentrations in 1985 ranged from 0.25 to 2766.27 mg/g with high concentrations in muddy and sandy sediments. The results show marked variations and non – uniform distribution from one season to another. With few exceptions,... |
| Tipo: Working Paper |
Palavras-chave: Environmental pollution; Coastal waters. |
| Ano: 1991 |
URL: http://hdl.handle.net/1834/269 |
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| Rey-Villiers, N.; Alcolado, P. M.. |
| Se determinó la variación de la talla de los octocorales Eunicea flexuosa y Plexaura kuekenthali en arrecifes coralinos con diferente grado de contaminación urbana en la ciudad de La Habana, Cuba. Se midió la altura de las colonias encontradas a lo largo de un transepto de banda (100 x 1 m). La distribución por tallas de ambas especies mostró una tendencia a que las colonias alcancen una mayor frecuencia relativa en los menores intervalos de tallas en los sitios cercanos a las cuencas fluviales con mayor carga contaminante (medido por el número de fuentes contaminantes y carga dispuesta, DBO). La talla media de E. flexuosa fue significativamente menor en los dos sitios cercanos a las cuencas con mayor carga contaminante. Sus mayores tamaños de efecto... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental pollution; Size distribution; Coral; Gorgoniidae; Environmental pollution; Size. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4590 |
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| Mwashote, B.M.. |
| Flame absorption spectrophotometry was used to investigate the concentration and distribution of cadmium and lead in water, sediments and selected fish species in Makupa and Tudor creeks in Mombasa, Kenya between May 1997 and March 1998. The results were compared with those obtained in relatively less anthropogenically influenced areas along the Kenyan coast. The mean concentrations for Pb ranged from not detectable (nd) to 0.012 mg/l, 0.2 to 58.0 mg/kg and nd to 59.3 mg/kg in water, sediment and fish samples respectively. Cadmium concentrations in water were generally below detection limits, while in sediment and fish samples, they ranged from nd to 1.0 mg/kg and nd to 3.7 mg/kg respectively. Overall, Pb and Cd concentrations were low in the water column... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution surveys; Minerals; Environmental pollution; Http://aims.fao.org/aos/agrovoc/c_32981. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/967 |
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| Ling, Jing; Deng, Liang-ji. |
| By using factor analysis method and establishing analysis indicator system from four aspects including crop production, poultry farming, rural life and township enterprises, the difference, features, and types of factors influencing the rural environmental pollution in the hilly area in Sichuan Province, China. Results prove that the major factor influencing rural environmental pollution in the study area is livestock and poultry breeding, flowed by crop planting, rural life, and township enterprises. Hence future pollution prevention and control should set about from livestock and poultry breeding. Meanwhile, attention should be paid to prevention and control of rural environmental pollution caused by rural life and township enterprise production. |
| Tipo: Journal Article |
Palavras-chave: Rural area; Environmental pollution; Influencing factors; Factor analysis; Hilly area in Sichuan Province; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113931 |
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| Gatiboni,Luciano Colpo; Smyth,Thomas Jot; Schmitt,Djalma Eugenio; Cassol,Paulo Cezar; Oliveira,Clovisson Menotti Boeira de. |
| The State of Santa Catarina, Brazil, has agricultural and livestock activities, such as pig farming, that are responsible for adding large amounts of phosphorus (P) to soils. However, a method is required to evaluate the environmental risk of these high soil P levels. One possible method for evaluating the environmental risk of P fertilization, whether organic or mineral, is to establish threshold levels of soil available P, measured by Mehlich-1 extractions, below which there is not a high risk of P transfer from the soil to surface waters. However, the Mehlich-1 extractant is sensitive to soil clay content, and that factor should be considered when establishing such P-thresholds. The objective of this study was to determine P-thresholds using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eutrophication; Swine manure; Environmental pollution. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401225 |
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| Alvarenga,Anarelly C.; Sampaio,Regynaldo A.; Pinho,Gevany P.; Cardoso,Paulo H. S.; Sousa,Izabelle de P.; Barbosa,Mário H. C.. |
| ABSTRACT One of the major limitations of sewage sludge agricultural use is the presence of chlorobenzenes (CBs), which are toxic to the environment. The use of techniques of sewage sludge phytoremediation can be an important alternative for the degradation of these substances in the waste. The aim of this study was to evaluate the effect of Pennisetum purpureum cultivation time on the reduction of the concentrations of 1,4-CB and 1,3,5-CB in sewage sludge. The experiment was conducted in a greenhouse, using a randomized block design. The treatments consisted of five periods of Poaceae cultivation in sewage sludge plots (30, 60, 90, 120 and 150 days) and a control (sludge plots not cultivated). At 150 days, the control, in the layer of 0-20 cm, showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sewage sludge; Toxic organic substance; Environmental pollution. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000800573 |
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| Doblinski,André F.; Sampaio,Silvio C.; Silva,Vanderlei R. da; Nóbrega,Lúcia H. P.; Gomes,Simone D.; Dal Bosco,Tatiane C.. |
| In order to verify the environmental impact of the application of swine farming wastewater in bean crop, an experiment was set up in the Experimental Farm of PUCPR - Toledo, PR, Brazil. Runoff and soil samples were collected at the end of the experiment. Four wastewater treatments were utilized during the experiment (50, 100, 150 and 200 m³ ha-1) and the without wastewater as the control. The results demonstrate that (i) the amounts of potassium, phosphorus, and nitrogen in runoff are exponential, (ii) that phosphorus has a seven-fold polluting potential compared to potassium and three-fold compared to nitrogen, and (iii) that the mobility of potassium in the soil profile is the largest, followed by those of nitrogen and phosphorus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water reuse; Runoff; Environmental pollution. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662010000100012 |
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| Registros recuperados: 33 | |
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