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| Registros recuperados: 51 | |
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| Betanzos Vega, A.; Capetillo Piñar, N.; Lopeztegui Castillo, A.; Martínez Daranas, B.. |
| A partir de cinco cruceros de investigación realizados en el periodo 2008 – 2010, en dos bahías semicerradas (Buena Vista y San Juan de los Remedios), de la región norcentral de Cuba, se analizó la variabilidad espacio-temporal de la turbidez del agua y su relación con la temperatura, salinidad, concentración y saturación de oxígeno disuelto, pH, transparencia, color, sólidos suspendidos y totales, demanda química de oxigeno (DQO) y la intensidad del viento in situ. Se evaluó la calidad de las aguas por el índice del estado trófico, y de la comparación y relación transparencia vs. turbidez se obtuvieron ntervalos de turbidez (FTU) que se utilizaron como indicador de la calidad de los cuerpos de aguas estudiados. La turbidez presentó... |
| Tipo: Journal Contribution |
Palavras-chave: Turbidity; Quality; Bays; Shelf seas. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5383 |
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| Mahmoudi, E.; Beyrem, H.; Boufahja, F.; Essid, N.; Hedfi, A.; Aissa, P.. |
| Dix stations côtières ont été prospectées dans la lagune de Bizerte en hiver 2001 pour étudier l’impact des conditions environnementales sur les plans morphométrique, trophique et de maturité des nématodes méiobenthiques. Nos résultats montrent que la croissance en largeur des nématodes libres a été proportionnelle aux charges sédimentaires en fraction fine et en métaux et ce parallèlement à l’individualisation de quatre morphotypes nématologiques. D’autre part, la structure trophique de la nématofaune est liée à la turbidité et aux concentrations des eaux en nitrites. En effet, la proportion en détritivores sélectifs, principalement bactériophages, au sein des communautés nématologiques, est positivement corrélée à la concentration des eaux en nitrites et... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental effects; Feed composition; Indicator species; Pollution monitoring; Sedimentation; Sexual maturity; Turbidity; Nematoda; Environmental impact; Http://aims.fao.org/aos/agrovoc/c_5112; Http://aims.fao.org/aos/agrovoc/c_24420. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/4156 |
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| Rodrigo,Cristian; Varas-Gómez,Andrés; Grisales,César; Quintana-Saavedra,Diana; Molares,Ricardo. |
| ABSTRACT Global atmospheric warming and rising ocean temperatures can contribute to the acceleration of glacier melting and influence the generation and physical characteristics of sediment flows in bays and fjords of the Antarctic Peninsula. During the First Scientific Expedition of Colombia to the Antarctic, carried out between January and February 2015, hydrographic variables (temperature, salinity, pressure and turbidity) were measured in the water column, from very close to the main glacier front towards the offshore, on 5 bays of the Danco Coast, Western Antarctic Peninsula. Glacimarine sediment plumes from the tidewater glacier were identified in all bays, however, with varying spatial extensions as well as the concentration of sediments, being... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glacimarine environment; Sediment plume; Turbidity; Oceanographic Variable; Tidewater Glacier.. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000300149 |
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| Oliveira,Ricardo Cardoso de; Barros,Sueli Teresa Davantel de. |
| The aims of the present work were to study the relationship between the fluxes, permeate quality, and fouling mechanism. A polysulfone membrane with 100 KDa and 0.12 m² of surface area was used. Permeate fluxes were measured for different pressures (0.5, 1.0, 1.5, and 2.0 bar) at the same temperature of 8 ºC. The fluxes measured for each pressure ranged from 22, 24, 27 and 30 kg h-1m-2 at 0.5, 1.0, 1.5 and 2.0 bar, respectively. Samples of the feed and permeate were analyzed for pH, color, turbidity, sugar, bitterness, and proteins. The fouling mechanisms observed were cake filtration, partial pore blocking, and complete pore blocking. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microfiltration; Polymer Membrane; Pore Blocking; Turbidity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600020 |
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| Nwinyi,Obinna Chukwuemeka; Kanu,Ijeoma Akudo; Tunde,Ayano; Ajanaku,Kolawole Oluseyi. |
| The bacterial diversity in a diesel contaminated tropical soil was investigated using diesel oxidation in gradient cultures dynamics (pH and OD) of the pure cultures. The diesel dependent growths of these isolates were assessed for 15 days by monitoring the gradient fluxes in the pH and Optical density OD of the media. Results showed an increase in OD as well as fluctuations in pH values. The mean OD data obtained was 0.515- 1.187 with pH of 6.95-7.2. From the morphological and biochemical characterization and comparison with respect to the standard references, the isolates S1P1, S3P3, S2P2, S2P1,and S3P2 were presumably the members of the genera Bacillus, Pseudomonas and Mycobacterium species. From the study, it was apparent that the tropical ecosystems... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diesel; Optical density; Turbidity; Tropical Ecosystem; Bacterial strains; PH. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500789 |
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| Registros recuperados: 51 | |
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