Consulta: subjectFacets:"Hydrocarbons"
Registros recuperados: 35
Data/hora: 10/06/2024 08:13:42

Estados fenológicos tempranos de frijol [Vigna unguiculata (L.) Walp], bacterias y actividad enzimática: indicadores de toxicidad del petróleo intemperizado.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Ramírez May, Ana Guadalupe.
El objetivo de esta investigación fue evaluar el efecto de los hidrocarburos totales del petróleo intemperizado (HTPI) al final de dos estados del crecimiento vegetal, en la densidad de bacterias fijadoras de N de vida libre (BFN) en suelo-rizosfera, de asociación simbiótica (Rhizobium) en nódulos y la actividad enzimática de la ureasa en suelo plantado con Vigna unguiculata, para obtener indicadores biológicos de toxicidad. Se utilizaron dos Gleysoles del estado de Tabasco, México. Gleysol 1 (sitio 1) ubicado a 2 Km al sureste del Complejo Procesador de Gas La Venta, en el ejido José Narciso Rovirosa, Huimanguillo, se colectaron en nueve puntos suelos con diferentes contenidos de HTPI (5 822, 6 536, 13 803, 14 431, 15 923, 23 313, 25 517, 28 465, 50 297...
Palavras-chave: Bacterias; Nódulos; Hidrocarburos; Toxicidad; Bacteria; Nodules; Hydrocarbons; Toxicity; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/716

Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: 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

Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009  a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/240

Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009  a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/240

Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: 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

Санитарно-экологические исследования акватории Севастополя
Provedor de dados: IBSS Repository
Autores: Алёмов, С. В.; Бурдиян, Н. В.; Гусева, Е. В.; Шадрина, Т. В.; Енина, Л. В.; Сосновская, Р. В.; Волков, Н. Г.; Тихонова, Е. А.
Проанализировано распределения бактерио-, мейо- и макрозообентоса в зависимости от физико-химических характеристик донных осадков бухты Южная (г. Севастополь, Чёрное море). Содержание нефтяных углеводородов составляло 607,2 – 1458,0 мг/100 г сух. осадка. В вершинной части бухты отмечено снижение концентраций нефтяных углеводородов. Общая численность гетеротрофных бактерий находилась в пределах 104 кл./г, плотность мейобентосного населения 9500 – 197800 экз./м2. Наибольшая средняя плотность мейобентоса приурочена к кутовой части бухты. Соотношение основных групп мейобентоса указывает на более благоприятные условия для существования мейобентосных организмов в вершине бухты. В составе макрозообентоса отмечен 31 таксон. Численность макрозообентоса не превышает...
Tipo: Journal Contribution
Palavras-chave: Hydrocarbons; Benthos; Benthos; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/580

Изменение численности нематод в илистых донных осадках Севастопольских бухт, загрязненных нефтяными углеводородами
Provedor de dados: IBSS Repository
Autores: Гусева, Е. В.
Рассмотрены изменения численности нематод в илистых донных осадках севастопольских бухт различной степени загрязнения нефтяными углеводородами в период 1994 – 2000 гг. Показано, что плотность поселений  нематод резко снижается при концентрациях нефтяных углеводородов свыше 300 мг / 100 г.
Tipo: Journal Contribution
Palavras-chave: Oil pollution; Quantitative distribution; Hydrocarbons; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/408

Accumulation and depuration of hydrocarbons in the mangrove oyster Crassostrea rhizophorae
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Delcastillo, C; Corredor, J; Morell, J.
Adult specimens of Crassostrea rhizophorae were exposed to diesel oil dispersed in seawater. The experiment consisted of a 10 days contamination period and 15 days depuration period. Oyster samples were extracted, and analysed by gas chromatography and UV fluorescence spectroscopy. The concentrations of n-alkanes, branched alkanes, unresolved complex mixture (UCM) and aromatic hydrocarbons were determined. The oysters accumulated the hydrocarbons rapidly, reaching a maximum concentration of 387.5 ug/g (wet weight). After exposure to uncontaminated seawater, the oysters were able to reduce their hydrocarbon load to 5.6 ug/g. The data indicates that C. rhizophorae is capable of preferential accumulation and depuration of hydrocarbons. Apparently, the oysters...
Tipo: Text
Palavras-chave: Crassostrea rhizophorae; Bivalvia; Fluorescence spectroscopy; Gas chromatography; Oyster culture; Hydrocarbons; Marine pollution; Accumulation; Self purification.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1602.pdf

Ecosystemes benthiques profonds et chimiosynthese bacterienne: Sources hydrothermales et suintements
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laubier, Lucien.
Hydrothermal communities of various species compositions have been described from the eastern and western Pacific and Atlantic. Brine and cold seeps and hydrocarbon seepages have been found off Florida, off the Oregon and Japanese subduction systems, on the Laurentian Fan, near Barbados, and off Louisiana. Biomasses range from 10 to 70 kg/m super(2), fresh weight. Basic microdistribution of species groups in aureoles centered around hydrothermal vents reveals different levels of adaptation to harsh physico-chemical conditions. Two groups of primary producers can be recognized: a highly efficient cool water group with large vestimentiferan tube worms and bivalves, and alvinellid polychaetes adapted to hot waters. Both groups are exploited by specific...
Tipo: Text
Palavras-chave: Bivalvia; Polychaeta; Bacteria; Symbionts; Biosynthesis; Chemosynthesis; Food webs; Biomass; Hydrocarbons; Ecosystems; Hydrothermal springs; Seepages; Brines; Benthic environment; Benthos.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1171.pdf

Observations préliminaires recueillies dans l'exécution des programmes entrepris par la station biologique de Roscoff
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bergerard, S.
We have tried to expose here the first observations on the basis of , previous knowledge and studies in progress when the wreck arrived, in particulary of benthic Populations Dynamics by the workers of the Biological Station. These results, still very fragmentary, allow never the less to definite the programs required for the second phase, essentially on the populations of fine deposits of the Morlaix and Lannion bays.
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; Amoco Cadiz; Sédiments; Phytoplancton; Macrobenthos; Meiobenthos; Microbenthos; Baie de Morlaix; Baie de Lannion; Pollution; Hydrocarbons; Amoco Cadiz; Sediments; Phytoplancton; Macrobenthos; Meiobenthos; Microbenthos; Morlaix Bay; Lannion Bay.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41725/40936.pdf

Effet du pétrole de l'"Amoco Cadiz" sur les oiseaux de mer. Bilan provisoire
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Monnat, J.y.
Immediatly following the AMOCO CADIZ oil spill, the S.E.P.N.B. carried out health centers for oiled birds from Finistère, and estimated the impact of the oil spill on seabirds. In the whole, 15 to 20 000 birds are dead because of the AMOCO CADIZ oil spill. 41 species have been oiled, among which 35 usually live in marine environment. The species most stressed belong to alcidae. The mortality rate (0,1 bird/ton of oil) seems to be, at. present day, the lowest rate never mentionned in the litterature.
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; AMOCO CADIZ; Oiseaux; Nord-Finistère; Côtes-du- Nord; Pollution; Hydrocarbons; AMOCO CADIZ; Birds; Northen Brittany.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41723/40934.pdf

Amoco-Cadiz : Informations sur la contamination des espèces exploitées
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Michel, Pierre; Abarnou, Alain.
This report is a statement of the analytical results obtained in the control of the exploited species three months after the AMOCO CADIZ ran aground on the coast of Brittany. Different samples have been studied, among these : algae, crustaceans (Maïa squinado and Cancer pagurus). twenty species of fish, and molluscs (Ostrea edulis. Crassostrea gigas. Mytilus edulis) Algae have been heavily contaminated but are partically available for algi­nate industry. Molluscs are not presently edible within the whole polluted area. Fishes and crustaceans are less polluted.
Tipo: Text
Palavras-chave: Pollution marine; Analyse; Hydrocarbures; Marine pollution; Analysis; Hydrocarbons.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41724/40935.pdf

Characterisation and expression of four mRNA sequences encoding glutathione S-transferases pi, mu, omega and sigma classes in the Pacific oyster Crassostrea gigas exposed to hydrocarbons and pesticides
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boutet, Isabelle; Tanguy, Aurelie; Moraga, Dario.
Hydrocarbon and pesticide pollution in coastal ecosystems can disturb marine bivalve metabolism. In this study, we characterised four full-length cDNA sequences encoding glutathione S-transferases (GSTs) in the Pacific oyster Crassostrea gigas. A BLAST X search showed that these four sequences encode GSTs from four different classes: GST pi, sigma, mu and omega. A phylogenetic analysis of GST was made to determine the position of oyster GST compared to invertebrate and vertebrate sequences. We developed a semi-quantitative, multiplex RT-PCR to follow the expression of these four GSTs in tissues of oysters exposed to hydrocarbons and two pesticide treatments ( glyphosate and a mixture composed of atrazine, diuron and isoproturon) under experimental...
Tipo: Text
Palavras-chave: Crassostrea gigas; Gene expression; Multiplex RTPCR; Pesticides; Hydrocarbons; CDNA sequences; Glutathione S transferases.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-431.pdf

Etude comparative des methodes d'analyses de la contamination petroliere dans l'environment marin. 1. Etude fluorometrique.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Awad, Hassan.
Although the determination of hydrocarbons in the marine environment is based usually on the same analytical steps, organic solvents extraction, column chromatography purification, and means for hydrocarbons detection and identification, the variations in the equipment and solvent systems included in the different established techniques hinder to obtain a global idea about the oil contamination state of the seas. Many authors and conferences declared the necessity of carrying out a comparative study on the efficiencies of the various published analytical techniques in this field. According to the facilities available in the laboratory, 25 applications of 16 published techniques were applied on a fixed weight of unique sample of sediments, mussels, fishes,...
Tipo: Text
Palavras-chave: Analytical techniques; Hydrocarbons; Fluorescence spectroscopy.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/publication-1990.pdf

Critères de pollution par hydrocarbures dans les sédiments marins. Étude appliquée à la pollution du "Bohlen"
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marchand, Michel; Roucache, J.
In October 16, 1976, the tanker "Bohlen" was wrecked in the Mer d'Iroise, at about 35 miles of Brest, and lossed about 7 000 t of Boscan crude oil. The coast of Brittany was polluted by 3 000 t, and 4000 t were dispersed in the marine environment. In July 1977, 23 surface sediment samples were collected to look for the traces of oil spill in the sea bottom, 9 months after the shipwreck. Only one sediment was very iittle polluted by the Boscan crude oil. Elsewhere, two other kinds of oil pollution were observed in sorne sediment samples. Severa! quantitative and qualitative criteria were used to research sorne oil pollution in the marine sediments and to know the origin: hydrocarbon concentrations, ratios total organic extra ct 1 organic carbon,...
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; Sédiments; « Bohlen »; Pollution; Hydrocarbons; Sediments; "Bohlen".
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00121/23206/21051.pdf

Origin of organic compounds in fluids from ultramafic-hosted hydrothermal vents of the Mid-Atlantic Ridge
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Konn, Cécile.
Natural gas, primarily methane (CH4), is produced in substantial amounts in ultramafic-hosted hydrothermal systems. These systems could also generate oil (heavier hydrocarbons) and the first building blocks of life (prebiotic molecules). In the presence of iron bearing minerals, serpentinisation reactions generate H2. Subsequently, CH4 could be synthesised by Fischer-Tropsch Type (FTT) reaction (4H2 + CO2 -&gt; CH4 + 2H2O) which is an abiotic process. This has lead to the idea of abiotic formation of larger organic molecules. Both thermodynamics and laboratory work support this idea, yet field data have been lacking. This study focuses on determining the organic content of fluids from ultramafic-hosted hydrothermal systems from the Mid-Atlantic Ridge (MAR)...
Tipo: Text
Palavras-chave: Origin of life; Geochemistry; Hydrothermal; Ultramafic; Organic compounds; Hydrocarbons; Serpentinisation; Origine de la vie; Géochimie; Systèmes hydrothermaux; Ultrabasique; Composés organiques; Hydrocarbures; Serpentinisation.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/these-6939.pdf

Aliphatic hydrocarbons and triterpenes of the Congo deep sea fan
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mejanelle, Laurence; Riviere, Beatrice; Pinturier, Laurence; Khripounoff, Alexis; Baudin, Francois; Dachs, Jordi.
Hydrocarbons were analyzed in sediments from the Congo River deep-sea fan, from the Congo River, and in sinking particles collected by sediment traps 40 m above the sediment. Studied sites encompassed three lobes of decreasing age of formation along the canyon: sites A, F and C and a another lobe system, disconnected from the active channel since 4 ka, Site E. Terrestrial long-chain odd n-alkanes were dominant in all sediments of the lobe system. Unsaturated terpenoids sourced by higher plants, such as gammacerene, lupene, ursene and oleanene, were also detected. At site C, characterized by high accumulation rates (10–20 cm yr−1), the organic matter spends less time in the oxic layer than at other sites and high phytadiene concentrations (10 to 17 μg...
Tipo: Text
Palavras-chave: Congo fan; Hydrocarbons; NAH; Hopanes; Hopenes; Sediments; Turbidite system.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00388/49902/50472.pdf

Biodegradation du petrole en mer. Influence de l'apport d'azote et de phosphore sous forme minerale
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lepetit, J; Guiot, J; Martin, Y; Tagger, S.
To exploit the presence in the sea of microorganisms capable of degrading petroleum products a mineral fertilizer, containing immediatly assimilable nitrogen and phosphorus compounds, was used to increase the microbial population and therefore, the degradation potential of treated polluted waters. The fertilizer supply caused an increase in heterotrophic and hydrocarbon-splitting bacteria and an increase in the phytoplanktonic biomass. The latter is characterized by an increase in a few selected species; it constitutes an important supply of organic substances, and it is responsible for increasing the dissolved oxygen which is essential for petroleum oxidation. Supplying the fertilizer results in an increase in the treated water degradation potential and a...
Tipo: Text
Palavras-chave: Bacteria; Microorganisms; Heterotrophic organisms; Phosphorus compounds; Nitrogen compounds; Fertilizers; Hydrocarbons; Biodegradation; Sea water.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1020.pdf

Physiological effects of gasoline on the freshwater fish Prochilodus lineatus(Characiformes: Prochilodontidae)
Provedor de dados: Neotropical Ichthyology
Autores: Simonato,Juliana D.; Fernandes,Marisa N.; Martinez,Cláudia B. R.
The purpose of this work was to evaluate the effects of the water-soluble fraction of gasoline (WSFG) on the Neotropical freshwater fish Prochilodus lineatus. The WSFG was prepared by mixing gasoline in water (1:4) and animals were exposed for 6, 24 and 96h to 5% diluted WSFG or only to water. After exposure, blood was collected from the caudal vein and the gills were removed. The following parameters were analyzed: hematological (hemoglobin, hematocrit, number of red blood cells), osmo-ionic (plasma Na+, Cl- and K+ and plasma osmolarity), metabolic (total plasma proteins and glucose), endocrine (cortisol), density and distribution of chloride cells [CC] in the gills (immunohistochemistry), and branchial Na+/K+-ATPase (NKA) activity. Hemolysis was found to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chloride cells; Hematology; Hydrocarbons; Na+K+-ATPase; Osmoregulation; Stress response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300683

Les métaux traces (Cd, Pb, Hg) et les hydrocarbures totaux dans les sédiments superficiels de la frange cotière du golfe de Gabès
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Chouba, L.; Mzougui-Aguir, N.
Dans l’objectif de déterminer l’état de la contamination organique et inorganique des sédiments superficiels de la frange côtière du golfe de Gabès, nous avons évalué les concentrations en hydrocarbures aromatiques totaux, en cadmium (Cd), en plomb (Pb) et en mercure (Hg).  L’échantillonnage a été effectué à bord d’une barque motorisée, à l’aide d’une benne Van Veen au niveau de 25 stations. Les concentrations du Cadmium et du Plomb ont été déterminées par Spectrométrie d’Absorption Atomique à Four Graphite (Varian 220Z) alors que pour le Mercure les analyses ont été réalisées par Spectrométrie d’Absorption Atomique à vapeur froide. Les hydrocarbures totaux ont été analysés par UV-Fluorescence (UV-F). Les concentrations du Cadmium et du Mercure dans la...
Tipo: Journal Contribution
Palavras-chave: Cadmium; Coastal waters; Hydrocarbons; Lead; Marine pollution; Mercury; Pollution monitoring; Sediments; Trace metals.
Ano: 2006
URL: http://hdl.handle.net/1834/4275

Antarctic Psychrophile Bacteria Screening for Oil Degradation and Their Degrading Characteristics.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Zheng, Zhou; Jin, Qing; Miao, Jinlai; Liu, Fangming.
Two hydrocarbon degrading bacteria NJ276 and NJ341 were screened from 385 Antarctic marine bacteria and their degrading characteristics were studied. Diesel oil as sole carbon source was used in this study. The results showed that the oil degradation rates of Antarctic psychrophile bacteria NJ276 and NJ341 were 23.47 % and 32.15 %, respectively, after 20 days culturation at 5 °C, and the rates were 43.95 % and 62.47 % respectively after 20 days culturation at 15 °C. The oil degradation abilities were enhanced remarkably with the increasing culture temperature. GC - MSs indicated the residual oil contained C15 - C21 7 alkyls after degradation by NJ276, and C16, C17 and C18 3 alkyls after degradation by NJ341. The 16S rDNA gene sequences homology and...
Tipo: Journal Contribution
Palavras-chave: Hydrocarbons; Degradation; Bacteria.
Ano: 2008
URL: http://hdl.handle.net/1834/5879

Distribution quantitative de la meiofaune dans un milieu fortement anthropise  :  le vieux port de Bizerte (Tunisie)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Essid, N.; Mahmoudi, E.; Beyrem, H.; Aissa, P.; Hedfi, A.
The survey of sediment and hydrological parameters in the old harbor of Bizerte has revealed that this ecosystem knows a high anthropogenic pressure. In this area waters were characterized by weak contents in dissolved oxygen and sediments, rich in fine fraction, were loaded in hydrocarbons and in organic matter. The free-living nematodes, predominant taxa, responded to these disturbances by a significant decrease in their densities and their biomasses and had tendency, notably at the most isolated sites, to penetrate deeply to escape surface sediments highly loaded in hydrocarbons and in organic matter.
Tipo: Journal Contribution
Palavras-chave: Hydrocarbons; Pollution effects; Pollution indicators; Meiobenthos; Harbours; Man-induced effects; Bioindicators; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2003
URL: http://hdl.handle.net/1834/1115

Caractérisation préliminaire à partir de la lagune de Bizerte (Tunisie) des bactéries tolérantes aux hydrocarbures aromatiques polycliques (HAPS)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Duran, R.; El Bour, M.; Ben Said, O.; Goni, M. S.; Dalleli, M.; Aissa, P.
م إنجاز هذه الدراسة  لهدف عَزَلَ بَكْتِيريَا قادرة على استعمالتم إنجاز هذه الدراسة  لهدف عَزَلَ بَكْتِيريَا قادرة على استعمال الهيدروكربنات و مقاومة للمعادن والمضادات الحيوية و في هذا الإطار  تم أخذ عينات من الماء و التربة على مستوى  16محطة موزعة ببحيرة بنزرت. كما تم عزل البكتيريا بطريقة الإثراء  باستعمال وسط مائي معدني زائد هيدروكربنات (fluoranthène) وقد توصلنا في عملية أولية من عزل 130  من الأجذال المختلفة من البكتيريا والتي تم تعريفها عبر الخاصيات  الشكلية و البيوكيميائية. وأثبتت  النتائج الأولية أن البكتيريا القادرة على استعمال الهيدروكربنات تنتمي لمجموعات مختلفةGram – و  Gram+  على التَّوَالِي بنسبتي 65% و 35 %. وتضم مجموعة البكتيريا من نوع العصيات  Gram – أكبر عدد من الأجذال المعزولة (74 %). ختاما نشير أن دراسة قدرة الأجذال على مقاومة المعادن...
Tipo: Journal Contribution
Palavras-chave: Bacteria; Antibiotics; Biodegradation; Control resistance; Heavy metals; Hydrocarbons; Pollution monitoring; Antibiotics; Biodegradation; Heavy metals; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_492; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2007
URL: http://hdl.handle.net/1834/4257

Estudio de la contaminación con hidrocarburos de un ecosistema de manglar en cayo Santa María, Jardines del Rey, Cuba
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Bermúdez Acosta, Jelvys; González Delgado, Alejandro; Castro Hernández, Yoelvis; Ortiz Guilarte, Eudalys; Núñez Moreira, Roberto; Oramas García, Julio; García García, Yaliany.
El propósito de esta investigación fue estudiar la contaminación de un ecosistema de manglar impactado con hidrocarburos en el sector centro sur de Cayo Santa María, Jardines del Rey, Cuba. Para el estudio de los indicadores microbiológicos y fisicoquímicos fue diseñado un muestreo estratificado, donde se seleccionaron dos estratos y diez estaciones de muestreo, considerando los patrones de flujos de marea en pleamar y bajamar, así como el impacto perceptible de la contaminación. La determinación de las poblaciones de microorganismos heterótrofos totales (BHT) y degradadores de petróleo (BDP) en agua y sedimentos se realizó por el método de conteo de colonias, expresadas como UFC·mL-1 o UFC· g-1 según la matriz de análisis. El contenido de hidrocarburos...
Tipo: Journal Contribution
Palavras-chave: ASW; Cuba; Degradation; Dispersion; Hydrocarbons; Microorganisms; Pollution.
Ano: 2014
URL: http://hdl.handle.net/1834/5912

Selección de bacterias con capacidad degradadora de hidrocarburos aisladas a partir de sedimentos del Caribe colombiano.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Narváez-Florez, S.; Gómez, M.L.; Martínez, M.M.
A partir de sedimentos del Caribe colombiano se realizaron 31 aislamientos bacterianos en medio mínimo de sales suplementado con hidrocarburos (ACPM o petróleo crudo) como única fuente de carbono. Las cepas aisladas se sometieron a pruebas de selección en diferentes concentraciones de hidrocarburos y se escogieron once de ellas tolerantes al crudo y ACPM en un ámbito del 1-8% v/v. Posteriormente, con las cepas seleccionadas, se conformó un cultivo bacteriano mixto y se evaluó su capacidad de degradar hidrocarburos en un ensayo a escala de laboratorio, con una concentración del 2% v/v de ACPM en un periodo de 21 días. Mediciones de la biomasa en Unidades Formadoras de Colonias (UFC)/mL fueron empleadas para elaborar la curva de crecimiento del cultivo mixto...
Tipo: Journal Contribution
Palavras-chave: Biodegradation; Hydrocarbons; Bacteria; Crude oil; Biodegradation; Hydrocarbons; Bacteria; Crude oil; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_3719; Http://aims.fao.org/aos/agrovoc/c_765; Http://aims.fao.org/aos/agrovoc/c_10178.
Ano: 2008
URL: http://hdl.handle.net/1834/3497

Presencia de hidrocarburos en el litoral ecuatoriano, crucero de prospección pesquera T03/10/02D
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Chalén, F.
Los hidrocarburos fueron investigados en el área costera del Litoral Ecuatoriano bajo el proyecto ODEPLAN del INP. La información evaluada corresponde al mes de octubre del 2003. Se programaron un total de 42 sitios para el muestreo de sedimentos de fondo, los cuales fueron demarcados con un GPS (Global Positional System). Las muestras de sedimentos fueron colectadas utilizando draga Van Veen, las mismas que fueron analizadas de acuerdo a la metodología señalada por UNIESCO/COI/PNUMA y leídas por Espectrofluometría. La zona mayormente monitoreada fue la Subárea A correspondiente al estuario externo del Golfo de Guayaquil, la misma que no se encontró significativamente contaminada, seguida de las Subáreas B y C, puesto que la mayoría de las concentraciones...
Tipo: Journal Contribution
Palavras-chave: Hydrocarbons; Sediments; Organic compounds; Pollution; Hydrocarbon analysis.
Ano: 2010
URL: http://hdl.handle.net/1834/5373

Estudio de impacto ambiental en Punta Fort William, verano austral: 1995-1996, 1997-1998
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Valencia T., M.
Durante los veranos australes de 1995-1996 y 1997-1998 se llevó a cabo, en Ensenada Guayaquil, cuerpo de agua aledaño a Punta Fort William, Isla Greenwich, del archipiélago de las Shetland del Sur, lugar del asentamiento de la Estación Científica "Pedro Vicente Maldonado", estudios químicos de la calidad de las aguas tendientes a determinar el eventual impacto que las actividades humanas pudieran ocasionar sobre tal ecosistema. Se presenta información acerca de las condiciones de oxigenación de las aguas, temperatura y salinidad de las mismas, la capacidad nutricia en relación con la concentración de micronutrientes inorgánicos así como información acerca de la presencia de hidrocarburos del petróleo disueltos y dispersos y, para establecer la efectividad...
Tipo: Journal Contribution
Palavras-chave: Environmental impact; Water quality; Hydrocarbons; Waste water; Dissolved oxygen; Chemical analysis; Environmental impact; Water quality; Waste water; Dissolved oxygen; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 1998
URL: http://hdl.handle.net/1834/3850

Status of coral reef affected by different impacts in some sites of the red sea
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Ammar, M.S.A.; Ghobashi, A.A.; Omran, M.A.; Shaaban, A.M.
Using Using SCUBA diving, surveying the coral reef communities at four sites, Red Sea Egypt was done. These sites are: Ras El Behar (polluted by petroleum oil), El-Hamraween (impacted by phosphate shipping), Shabrour Umm Gam’ar (harmed by recreational activities and has been suffering from the outbreak of Acanthaster planci during 1998) and Kalawy (a control site). The skeletal growth of the coral Stylophora pistillata was promoted greatly at the expense of other corals, in presence of chronic oil pollution (Ras El-Behar). In contrast, this species was completely suppressed in presence of phosphate and sulphur enrichment. Petroleum oil led to coral scarcity, space monopolization by one coral and increased sea urchins and algae. Coral reefs enriched with...
Tipo: Journal Contribution
Palavras-chave: Field Study; Coral reefs; Hydrocarbons; Phosphates; Coral reefs; Hydrocarbons; Phosphates; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_3719; Http://aims.fao.org/aos/agrovoc/c_35986.
Ano: 2007
URL: http://hdl.handle.net/1834/1909

Factors determining the structure of fish assemblages in an Amazonian river near to oil and gas exploration areas in the Amazon basin (Brazil): establishing the baseline for environmental evaluation
Provedor de dados: Revista Brasileira de Zoologia
Autores: Costa,Igor David; Freitas,Carlos Edwar de Carvalho.
ABSTRACT Determining the significance of biotic and abiotic factors in the structuring of fish assemblages in freshwater environments is an important question in ecology, particularly in view of environmental changes caused by man. In this paper we sought to identify the factors responsible for the composition and abundance of fish species collected with gill nets in six locations near ports in forest clearance areas opened up for oil and natural gas exploration (Petrobras Pedro Moura Base) in the Urucu River, during drought and flood cycles. In all, 923 individuals from 23 families and 82 species were collected, totalling a biomass of 182,244 g. The most abundant species during the flood season were Bryconops alburnoides (Kner, 1858) and Dianema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abiotic; Floodplain; Biological organization; Hydrocarbons.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000500351

Paleolimnological studies of Laguna Chica of San Pedro (VIII Region): Diatoms, hydrocarbons and fatty acid records
Provedor de dados: Revista Chilena de Historia Natural
Autores: URRUTIA,ROBERTO; KOEN,SABBE; CRUCES,FABIOLA; POZO,KARLA; BECERRA,JOSE; ARANEDA,ALBERTO; VYVERMAN,WIM; PARRA,OSCAR.
Diatom, hydrocarbons and fatty acid sedimentary records were used for reconstructing the recent (last 150 years) palaeolimnological history of Laguna Chica of San Pedro (Concepción, VIII Región, Chile). Cluster analyses (Constrained Incremental Sum of Squares) on the diatom data revealed three distinct periods. The first period (1883-1940's) showed a pronounced increase in sedimentation rate and a slight increase in organic matter accumulation. In this period, eutrophic species (Aulacoseira granulata and Staurosira construens) became increasingly dominant. From the 1940s until the 1970s the diatom signal is more equivocal: after the initial decrease in the relative abundance of A. granulata and S. construens their numbers fluctuate without a clear pattern....
Tipo: Journal article
Palavras-chave: Diatoms; Hydrocarbons; Fatty acids; Paleolimnology; Land use.
Ano: 2000
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400014

Alkanes as markers in nutritional studies with wild ruminant and non-ruminant animals
Provedor de dados: Scientia Agricola
Autores: Oliveira,Dimas Estrasulas de; Silva,Sila Carneiro da.
Knowledge of information relative to the digestibility, intake and botanical and morphological composition of the diet is important in nutritional studies, since it provides the basis for understanding aspects related to the ingestive behavior and selectivity of animals. N-alkanes have been used successfully as markers in studies with many species of animals, particularly domesticated ruminants, most of the times as replacements for conventional markers as chromium oxide for example. However, for wild ruminants and non-ruminant animals information on this technique is still scarce and, as a consequence, its potential for use unknown. This review reports the use of this technique in studies of feed digestibility, intake and diet composition with wild...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Diet composition; Feed intake; Forages; Hydrocarbons.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600015

N-alkanes to estimate voluntary forage intake of cattle using controlled-release capsules
Provedor de dados: Scientia Agricola
Autores: Oliveira,Dimas Estrasulas de; Manella,Marcelo de Queiroz; Tedeschi,Luis Orlindo; Silva,Sila Carneiro da; Lanna,Dante Pazzanese Duarte.
N-alkanes have been used as internal markers in digestibility trials with ruminants and non-ruminants for more than 20 years. In this study, two trials were conducted under different feeding regimes to (i) evaluate the release rate of n-alkanes of controlled-release capsules in the rumen of rumen-cannulated steers either grazing or restrained in metabolic stalls and (ii) estimate voluntary forage intake of the same steers in metabolic stalls. Six rumen-cannulated Nelore steers were allocated to individual metabolic stalls and were fed diets with varying forage to concentrate ratios (80:20, 60:40, and 40:60; respectively). Corn silage was the only forage source. In the grazing trial, the same steers were evaluated under three feeding managements (Brachiaria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Fecal recovery; Hydrocarbons; Markers; Dry matter intake.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300002

Quantitative and qualitative analysis of contaminating hydrocarbons in the Gulf of Santiago de Cuba by gas chromatography
Provedor de dados: Boletín de Investigaciones Marinas y Costeras (INVEMAR)
Autores: Mesa Mesa,Liliana; Falcón Hernández,José; Mulet De los Reyes,Alexander; Castellanos González,Juan Ramón.
ABSTRACT The coasts of Cuba are exposed to damage caused by the contamination by petroleum hydrocarbons. The coastal strip of the Gulf of Santiago de Cuba is an example of natural resources deterioration due to this contamination, which appears as one of its main environmental problems. In the present work, using gas chromatography, quantitative and qualitative analysis were performed based on the retention time values and the area under the chromatogram curve, which allowed characterizing the degree of contamination at four points of the bay of Santiago de Cuba: playa La Estrella (P1), “Guillermón Moncada” Port (P2) “Hermanos Díaz” Oil Refinery (P3), “Antonio Maceo” Thermoelectric Power Plant RENTE (P4). Retention times of individual peaks in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Hydrocarbons; Bay; Gas chromatography.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000100091

Purification, partial characterization and role in lipid transport to developing oocytes of a novel lipophorin from the cowpea weevil, Callosobruchus maculatus
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Ximenes,A.A; Oliveira,G.A; Bittencourt-Cunha,P; Tomokyo,M; Leite,D.B; Folly,E; Golodne,D.M; Atella,G.C.
Lipid transport in arthropods is achieved by highly specialized lipoproteins, which resemble those described in vertebrate blood. Here we describe purification and characterization of the lipid-apolipoprotein complex, lipophorin (Lp), from adults and larvae of the cowpea weevil Callosobruchus maculatus. We also describe the Lp-mediated lipid transfer to developing oocytes. Lps were isolated from homogenates of C. maculatus larvae and adults by potassio bromide gradient and characterized with respect to physicochemical properties and lipid content. The weevil Lp (465 kDa) and larval Lp (585 kDa), with hydrated densities of 1.22 and 1.14 g/mL, contained 34 and 56% lipids and 9 and 7% carbohydrates, respectively. In both Lps, mannose was the predominant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callosobruchus maculatus; Lipophorin; Lipid transport; Oogenesis; Hydrocarbons.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000100004

Comparing plastic syringes and disposable columns to extract n-alkanes in forage and concentrate feeds
Provedor de dados: Ciência Rural
Autores: Oliveira,Dimas Estrasulas de; Tedeschi,Luis Orlindo.
Saturated aliphatic hydrocarbons (n-alkanes) were extracted from feed, orts, and bovine fecal samples using disposable, plastic 5mL-syringes as an alternative material to disposable columns, which are normally used in the liquid-solid extraction phase of n-alkanes. For both methods, the n-alkane extracts (carbon chain length between 31 and 36 atoms) were identified using gas chromatography. The linear regression between methods were: 1) feces: column Alkane=2.63+0.92×syringeAlkane [r²=0.94, square root of the mean square error (RMSE)=13.7mg kg-1, n=30] from which the intercept and the slope did not simultaneously differ from zero and unity (P&gt;0.05), respectively; 2) feeds: column Alkane=0.36+1.12×syringeAlkane (r²=0.85, RMSE=1.9mg kg-1, n=21) from which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Analysis; Digestibility; Intake; Hydrocarbons; N-alkane determination.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000800029