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A decontamination approach altered the Gymnanthes klotzschiana Müll. Arg. Vessel anatomy in Southern Brazil. Repositório Alice
KANIESKI, M. R.; GALVÃO, F.; BOTOSSO, P. C.; SOARES, P. R. C.; NICOLETTI, M. F.; KONZEN, E. R.; MILANI, J. E. de F.; LONGHI-SANTOS, T.; PFUTZ, I. F. P.; AMANO, E..
Here we conducted an anatomical analysis of vessel elements from woody tissues of Gymnanthes klotzschiana individuals in a remnant of Alluvial Mixed Rain Forest in southern Brazil. This tree is among the species with the highest abundance within these forests. We sampled an area adjacent to a meadow highly impacted by an oil spill of four million liters from Petróleo Brasileiro S. A. The study was aimed at uncovering possible anatomical and structural changes in the wood of G. klotzschiana after an attempt at the decontamination of the area, which was performed by its flooding and extracting the oil that was deposited on the soil surface. Therefore, our sampling was performed in two environments with distinct water table characteristics: (1) with temporary...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Anatomia ecológica; Ecological anatomy; Environmental pollution; Vessel frequency; Vessel grouping; Poluição Ambiental.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112608
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Comparative analysis of exhaust gases from MF285 and U650 tractors under field conditions CIGR Journal
Rashid, Gholami; Hekmat, Rabbani; Ali Nejat, Lorestani; Payam, Javadikia; Farzad, Jaliliantabar.
Agricultural machinery is an important source of emission of air pollutant in rural locations.  This work deals with the effects of types of tractors and operation conditions on engine emission.  The values of some exhaust gases (HC, CO, CO2, O2 and NO) from two common tractors (MF285 and U650) at three situations (use of ditcher, plowing and cultivator) were evaluated in the West of IRAN (Kermanshah).  In addition, engine oil temperature at operation conditions was measured.  Also results showed the values of exhaust HC and O2 of MF285 are lower than U650, while the other exhausts gases (CO, CO2, and NO) of MF285 are higher than U650.  Value of NO emission increased as engine oil temperature increased.  All of exhaust gases except CO have a significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental pollution; Exhaust gases; Tractors.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2363
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Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco. Colegio de Postgraduados
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...
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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Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco. Colegio de Postgraduados
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...
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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Control of Environmental Pollution in Jiangsu Province AgEcon
Yan, Xu.
This paper introduces the problems in rural environment of Juangsu Province, and analyzes the causation of these problems. Finally, this paper discusses the related measures for controlling the rural environment of Juangsu Province.
Tipo: Thesis or Dissertation Palavras-chave: Rural area; Ecology; Environmental pollution; Control; China; Community/Rural/Urban Development; Environmental Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/53523
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Dinâmica do chumbo no lago do parque Ingá, Maringá, PR, Brasil BABT
Vaz,Sérgio Renato; Lenzi,Ervim; Luchese,Eduardo Bernardi; Fávero,Luzia O. B..
Este trabalho analisa a dinâmica do chumbo no lago do parque do Ingá, Maringá - PR. Mensalmente durante um ano foram coletadas amostras de água e sedimentos e o pH e temperatura medidos no ato da coleta. Nas amostras de água foi determinada a Demanda Química de Oxigênio (DQO) e a concentração total de Pb na água e sedimentos. A determinação da concentração Pb na água e sedimentos foi feita com a técnica da espectrometria da absorção atômica, modalidade chama. Os valores médios mensais encontrados, em intervalos e médias globais foram respectivamente: concentração de Pb na água, em ng.mL-1, não detectado (nd) - 55,56 e 19,23; Pb em sedimentos, em µg.g-1, 48,73 - 92,87 e 71,93; pH, 7,02 - 8,23 e 7,60; temperatura, em °C, 19,33 - 27,48 e 23,73; DQO, em...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lead; Lakes; Environmental pollution; Elements environmental dynamic; Environment.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000400010
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Ecotoxicological studies on the pejerrey (Odontesthes bonariensis, Pisces Atherinopsidae) Biocell
Carriquiriborde,Pedro; Ronco,Alicia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Odontesthes bonariensis; Ecotoxicology; Environmental pollution; Heavy metals; Pesticides.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100012
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Effect of potassium on the leaching of chemical species in a soil treated with sewage sludge BABT
Paglia,Edmilson Cezar; Serrat,Beatriz Monte; Freire,Clarice Azevedo de Luna; Sirtoli,Ana Rosa dos Anjos; Veiga,Andrea Mayer.
The objective of this research was to evaluate the potassium interference, used as supplementary fertilization, in the ions leaching, in a soil that was treated with alkalinized sewage sludge and cultivated, with maize. The experimental set with sewage sludge results showed an increase of the potassium concentration and chloride concentration in the leached solution, as well as the reduction of the Al3+ concentration, as the doses of potassium fertilizer applied to the soil were increased, for the four leachings. The presence of sewage sludge treated with lime increased the concentration of NO3 -, Cl-, Ca2+, Mg2+ and Al3+ in the solutions in the majority of leachings. Values of Al3+ were higher than 0.1 mg L-1, than in all leachings when sewage sludge was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosoli; Ionic leaching; Water contamination; Environmental pollution.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000400004
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Effects of the application of sewage sludge and petrochemical residue in maize culture as source of micro-nutrients on soils of Paraná state BABT
Pigozzo,Ana T. Jordão; Gobbi,Marlene A.; Lenzi,Ervim; Luchese,Eduardo B..
An evaluation of the potential of two organic residues as source of micro-nutrients in three soils of Paraná state was studied. Treatments consisted of one dose (38 t.ha-1) of sewage sludge and residue of purified used motor oil both neutralized with CaO+MgO mixture in 3:1 rate. Maize (Zea mays L.) was used as reference plant. After 30 days of seeding, the aerial parts of the plants were cut. They were dried at 70ºC till constant weight and ground. Analysis was undertaken after nitric-perchloric digestion. Micro-nutrients levels in the soils and in the aerial parts of the plants were determined by atomic absorption spectrometry. The results showed a production of the aerial parts of the plants treated with sewage sludge higher than those in other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sewage sludge; Oil residue; Environmental pollution; Micro-nutrients.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200002
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Environmental Pollution In The Nigeria Coastal Waters; A Case Study Of The Lagos Lagoon OceanDocs
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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Evaluation of sample preparation methods and optimization of nickel determination in vegetable tissues Rev. Bras. Ciênc. Solo
Salazar,Rodrigo Fernando dos Santos; Alcântara,Marco Aurélio Kondracki de; Izário Filho,Hélcio José.
Nickel, although essential to plants, may be toxic to plants and animals. It is mainly assimilated by food ingestion. However, information about the average levels of elements (including Ni) in edible vegetables from different regions is still scarce in Brazil. The objectives of this study were to: (a) evaluate and optimize a method for preparation of vegetable tissue samples for Ni determination; (b) optimize the analytical procedures for determination by Flame Atomic Absorption Spectrometry (FAAS) and by Electrothermal Atomic Absorption (ETAAS) in vegetable samples and (c) determine the Ni concentration in vegetables consumed in the cities of Lorena and Taubaté in the Vale do Paraíba, State of São Paulo, Brazil. By means of the analytical technique for...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Trace elements; Atomic absorption spectrometry; Calcination; Wet digestion; Environmental pollution.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100022
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Factor Analysis on the Factors that Influencing Rural Environmental Pollution in the Hilly Area of Sichuan Province, China AgEcon
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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Fecal Contamination of Groundwater in a Small Rural Dryland Watershed in Central Chile Chilean J. Agric. Res.
Valenzuela,Mariela; Lagos,Bernardo; Claret,Marcelino; Mondaca,María A; Pérez,Claudio; Parra,Oscar.
Research on microbiological groundwater quality was conducted in Chile in a rural watershed that has almost no other water source. Forty-two wells were randomly selected and levels of indicator bacteria - total coliforms (TC), fecal coliforms (FC), and fecal streptococci (FS) - were repeatedly measured during the four seasons of 2005. The aim of this study was to characterize microbiological groundwater quality, relate indicator levels to certain watershed features and management characteristics which are likely to affect water quality. The dynamics of seasonal temporal contamination was determined with statistical analyses of indicator organism concentrations. Nonparametric tests were used to analyze relationships between bacterial indicators in well...
Tipo: Journal article Palavras-chave: Biological contamination; Bacteria; Water quality; Environmental pollution.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200013
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Heavy metals in a degraded soil treated with sludge from water treatment plant Scientia Agricola
Teixeira,Sandra Tereza; Melo,Wanderley José de; Silva,Érica Tomé.
The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil reclaim; Tin mining; Mehlich 1; Environmental pollution.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500016
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Land suitability for final waste disposal with emphasis on septic systems installation in southern Minas Gerais, Brazil Ciência e Agrotecnologia
Oliveira,Jeani Moreira de; Silva,Sérgio Henrique Godinho; Menezes,Michele Duarte de; Kämpf,Nestor; Curi,Nilton.
ABSTRACT Environmental pollution is a problem that has been noted due to changes in the environment, affecting natural resources. Regarding the soil, it may offer great potential for waste disposal. Thus, this study aims to propose criteria for evaluating local suitability for waste disposal, according to soil and terrain attributes for southern Minas Gerais State, and to apply those criteria to define the most appropriate locations for installation of septic systems in a pilot watershed. Literature and the authors' experience were used to propose the more important criteria regarding the suitability of sites for waste disposal. The set of attributes taken into account was grouped into four suitability classes: Adequate, Regular, Restricted and Inadequate....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental pollution; Watershed; Pedology..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000100037
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Lead behavior in soil treated with contaminated sewage sludge and cultivated with maize BABT
Barriquelo,Marcilene Ferrari; Juliatti,Marinês Aparecida; Silva,Margarete Soares da; Lenzi,Ervim.
Lead (Pb) behavior was studied in soil treated twice with sewage sludge contaminated with lead at interval of 18 months. Soil samples received five different treatments: three with lead [0 (reference); 2,500; 5,000 mug g-1] and two with a mixture of lead and cadmium (interferer) (2,500 + 2,500 and 5,000 + 5,000 mug g-1, respectively). Vases containing treated soil were cultivated with maize in a greenhouse for 75 days. Pb was extracted using nitric perchloric digestion and analyzed by atomic absorption spectroscopy. The soil, containing sewage sludge contaminated by lead presented a higher concentration of Pb. The metal concentration remained constant in all treatments at 20-60 cm depth. No absorption of Pb by the plants was detected.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sewage sludge; Heavy metal; Lead; Environmental pollution.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400002
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Levels of Cadmium and Lead in Water, Sediments and Selected Fish Species in Mombasa, Kenya OceanDocs
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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Nitrogen balance of starting barrow pigs fed on increasing lysine levels BABT
Moreira,Ivan; Fraga,Alessandro Luis; Paiano,Diovani; Oliveira,Gisele Cristina de; Scapinello,Cláudio; Martins,Elias Nunes.
The effects of increasing lysine levels on nitrogen balance of pigs fed on low protein diets were evaluated. Four treatments (diets) containing lysine levels (0.8, 1.0 1.2 and 1.4%) were applied to 12 starting (20.0 ± 1.8 kg) barrow pigs. Methionine, threonine and tryptophan were kept constant to the lysine ratio in all diets. Feces and urine were collected during a 5-day period. Nitrogen output in urine (NOU), total nitrogen output (TNO), nitrogen retention (NR), net protein utilization (NPU), biological value or feed protein (BVFP), urine urea nitrogen (UUN), and plasma urea nitrogen (PUN) were determined. PUN showed high negative correlations with BVFP (-0.84), NPU (-0.76), and NR (-0.78) and a positive correlation (0.79) to NOU. Lowest nitrogen...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental pollution; Crystalline amino acids; Protein metabolism; Slurry.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100012
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Nonpoint source pollution by swine farming wastewater in bean crop AGRIAMBI
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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Optimization of crude protein in diets for Nile tilapia reared in net pens: performance, hematology, and water quality Ciência Rural
Puppo,Débora Del; Haese,Douglas; Gomes,Levy de Carvalho; Kill,João Luís; Brugnara,Enrique Coelho; Barcellos,Joyce; Haddade,Ismail Ramalho; Ton,Nielton Cezar.
ABSTRACT: Two experiments were conducted to evaluate the effects of reducing dietary crude protein (CP), based on the ideal protein concept for Nile tilapia reared in net pens. The experimental (isocaloric, isocalcium, and isophosphoric) diets were formulated to contain 270, 300, 330, and 360g kg-1 CP. In experiment 1, 4320 Nile tilapia (13.5±0.82g) were used to evaluate the performance and hematological parameters. The experimental design was completely randomized and the fish were distributed in 24 net pens (1.0m3), with four diets, six replicates, and 180 fishes per experimental unit. In experiment 2, 40 Nile tilapia (22.5±0.56g) were used to evaluate the ammonia excretion. Fish were distributed in 40 aquaria (3.0L), with one fish per aquarium (n=10)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amino acids; Performance; Statistic models; Oreochromis niloticus; Environmental pollution.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300651
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