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| Registros recuperados: 59 | |
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| Arias Trinidad, Alfredo. |
| El estudio de ecotoxicidad y fitorremediación de un Gleysol (GL) contaminado con petróleo fresco (PF) e intemperizado (PI) y sulfatos solubles (S-SO4), se realizo para seleccionar indicadores de toxicidad biológicos, evaluar el potencial del pasto japonesa (PJ) en la descontaminación de estos suelos, la presencia de S-SO4 en su interacción con los hidrocarburos, las bacterias sulfato reductoras y actividad enzimática de la arilsulfatasa (ASA). Dos GLs se usaron para establecer los bioensayos (BIO). El BIO1 con nueve tratamientos [T1: 2 607 (biogénico), T2: 6 000, T3: 10 000, T4: 30 000, T5: 60 000, T6: 90 000, T7: 120 000. T8: 150 000 y T9: 180 000 mg kg-1 suelo seco de hidrocarburos totales de petróleo fresco (HTPF)]. El BIO2 con seis tratamientos [T1: 2... |
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Palavras-chave: Petróleo; Sulfatos; Bacterias; Enzimas; Degradación; Maestría; Producción Agroalimentaria en el Trópico; Oil; Sulfates; Enzymes; Degradation. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1762 |
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| Teixeira,Luciana P.; Andrade,Ednilton T. de; Devilla,Ivano A.. |
| ABSTRACT To maintain seed and soil quality of pumpkin, energy knowledge associated with processing and storage stages is strategic for the optimization of the thermodynamic processes needed for product stabilization. Thus, the objective of this study was to determine isosteric heat, differential entropy, and Gibbs free energy within a temperature range from 20 to 70° C, and relative air humidity levels between 10.75 and 85.11%. The study was based on empirical data for water activity determination. As a result, we verified that as moisture content decreased, the integral isosteric heat of the product increased from 2502.35 to 6231.17 kJ kg-1, differential entropy raised from 1.18 to 12.43 kJ kg-1 K-1, and Gibbs free energy ranged from -243.84 to -432.59 kJ... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality; Energy; Thermodynamic properties; Oil. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100097 |
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| Decaro Junior,Sergio T.; Ferreira,Marcelo da C.; Lasmar,Olinto. |
| The physical characteristics of a spray liquid are important in getting a good droplet formation and control efficiency over a particular target. As a function of these characteristics, it is possible to decipher which is the best adjuvant based on the respective concentration used during the spray. Therefore, ten spraying liquids were prepared, which varied in concentrations of pesticide lufenuron + profenofos, mineral oil, water and manganese sulfate. Pendant droplets formed from these mixtures were measured to examine their impact on surface tension. Droplets were applied to the surface of coffee leaves and the surface tension, contact angle formed and the leaf area wetted by the droplet, were measured. A smooth glass surface was taken as a comparative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Surface tension; Contact angle; Wetted area; Oil. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300588 |
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| Claireaux, Guy; Queau, Pierre; Marras, Stefano; Le Floch, Stephane; Farrell, Anthony P.; Nicolas-kopec, Annabelle; Lemaire, Philippe; Domenici, Paolo. |
| When oil spills occur, behavior is the first line of defense for a fish to avoid being contaminated. Here, we determined the avoidance threshold of the European seabass (Dicentrarchus labrax) to the water-soluble fraction (WSF) of oil using a dual flow choice box. Our experiment revealed that a plume of 20%-diluted WSF (total PAH concentration: 8.54 μg L-1) triggered a significant avoidance response that was detected within 7.5 minutes of introducing WSF-contaminated water in the experimental set-up. However, the ecological relevance of seabass capacity to detect and avoid WSF remains to be established. In the short term, such response is indeed liable to reduce sea bass contact time with oil-contaminated water and thus preserve their functional integrity.... |
| Tipo: Text |
Palavras-chave: Fish; Oil; Behavior; Avoidance reaction; Water-soluble fraction. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00407/51899/52522.pdf |
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| De Carvalho Augusto, Ronaldo; Merad, Nadjiya; Rognon, Anne; Gourbal, Benjamin; Bertrand, Cédric; Djabou, Nassim; Duval, David. |
| Background Freshwater snails are the intermediate hosts of a large variety of trematode flukes such as Schistosoma mansoni responsible for one of the most important parasitic diseases caused by helminths, affecting 67 million people worldwide. Recently, the WHO Global Vector Control Response 2017–2030 (GVCR) programme reinforced its message for safer molluscicides as part of required strategies to strengthen vector control worldwide. Here, we present the essential oil from Eryngium triquetrum as a powerful product with molluscicide and parasiticide effect against S. mansoni and the snail intermediate host Biomphalaria glabrata. Methods In the present study, we describe using several experimental approaches, the chemical composition of E. triquetrum... |
| Tipo: Text |
Palavras-chave: Biomphalaria glabrata; Eryngium triquetrum; Molluscicide; Oil; Parasiticide; Schistosoma mansoni. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00652/76382/77391.pdf |
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| Ginigini, Joape; Lecellier, Gael J.; Nicolas, Mael; Nour, Mohammed; Hnawia, Edouard; Lebouvier, Nicolas; Herbette, Gaetan; Lockhart, Peter; Raharivelomanana, Phila. |
| Background: Different parts of the tree Calophyllum inophyllum L. (nuts, leaves, roots, bark, fruits, nut oil and resin) are used as traditional medicines and cosmetics in most of the Pacific Islands. The oil efficiency as a natural cure and in traditional cosmetics has been largely described throughout the South Pacific, which led us to investigate C. inophyllum's chemical and genetic diversity. A correlative study of the nut resin and leaf DNA from three distinct archipelagos in the South Pacific was carried out in order to identify diversity patterns in C. inophyllum across the South Pacific. Methods: Calophyllum inophyllum plants were sampled from French Polynesia, New Caledonia and Fiji. We extracted tamanu oil (nut oil) resin for chemo-diversity... |
| Tipo: Text |
Palavras-chave: Calophyllum inophyllum; Chemodiversity; South Pacific; Neoflavonoids; Oil; Biodiversity. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00659/77126/78506.pdf |
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| Rubilar,M; Gutiérrez,C; Verdugo,M; Shene,C; Sineiro,J. |
| Scientific evidence supports flaxseed consumption; however, a large sector of the population is still unaware of the benefits associated to its consumption and its possible applications as functional food ingredient in foodstuffs. Flaxseed is mainly known by its high alpha-linolenic acid content, but it is also a lignan source, soluble fibre and protein, compounds which are biologically active in the prevention of some non-transmissible chronic diseases. Southern Chile has comparative advantages for the cultivation of this crop. Together with its full processing, this crop could strengthen regional industry. The purpose of the present review is to highlight the nutritional properties of flaxseed. |
| Tipo: Journal article |
Palavras-chave: Flaxseed; Oil; Protein; Mucilage; Lignans. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100010 |
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| Fonseca, E. L.; Núñez, R. R.; Villaverde, M. J; Barbán, O. M.; Ferrer, O. B.; Ramos, I.; Valdés, O.. |
| Una marea negra provocada por el vertido deliberado o accidental de crudos de petróleo, aceite combustible, fangos o residuos petrolíferos y productos refinados, provoca un gran impacto sobre los ecosistemas marinos y costeros. En este trabajo, se desarrolla un producto compuesto por bacterias marinas inmovilizadas por atrapamiento en k- carragenina semirrefinada y en cuya formulación no se incluyen nutrientes. Los resultados muestran que la variante de inmovilización más ventajosa se obtuvo cuando fue empleada la κ-carragenina al 1% gelificada con una solución de KCL 1.5 M. Mediante análisis de Cromatografía Gaseosa de Alta Resolución y de espectroscopia (FTIR), se demostró la alta capacidad de degradación del bioproducto frente a petróleo del Yacimiento... |
| Tipo: Preprint |
Palavras-chave: Immobilization; Oil; Immobilization; Http://aims.fao.org/aos/agrovoc/c_27550. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/3662 |
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| Basheir ,Emam Mohammed. |
| In this study the Vis-breaking plant of Balila crude oil which is owned by Petro Energy Company was studied and the benefit in cost of this plant was calculated. The improvement in crude oil quality was tested. Besides investigating how Vis-breaking plant contributes in energy saving hence minimize its consumption. The flow characteristics of crude in pipeline were studied experimentally before and after Vis-breaking plant and described mathematically. Rheological models were developed to relate the shear stress to shear rate. These models were used to describe the effects of oil viscosity on the pressure required for pumping the oil through pipelines. The result of present study shows that the rheological characteristics of crude oil were improved from... |
| Tipo: Theses and Dissertations |
Palavras-chave: Oil. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4933 |
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| González Ontivero, O.. |
| Para Cuba no se encontraron trabajos que hagan énfasis en las enfermedades lo que sugiere que existe un registro muy limitado de información sobre el tema. Este estudio analiza la incidencia de enfermedades en dos zonas de arrecifes de Cuba. Una en la costa Norte y otra en la costa Sur, incluida dentro de un Parque Nacional, además de por sus valores naturales, porque mantiene las condiciones prístinas, sin influencia de desechos humanos. En los arrecifes de Ciudad de La Habana, en la región Norte, se han realizado diversos trabajos sobre la diversidad y la densidad de las asociaciones de esponjas, gorgonias, corales y peces. Sus resultados hacen referencia a las variaciones espaciales y temporales en los índices ecológicos en relación con... |
| Tipo: Theses and Dissertations |
Palavras-chave: Coral reefs; Eutrophication; Oil; Ecosystem management. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/5518 |
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| Registros recuperados: 59 | |
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