All content

Search filter terms
Filter by category
Filter by type
Filter by tag
Filter by user
Filter by licence
Filter by group
Results per page:
Sort by:
Showing 50 results. Use the filters on the left and the search box below to refine the results.
User: William Senior Licence: by-sa
Uploader

Blob Especiación del fósforo en sedimentos de un río trop...

Created: 2016-08-01 00:45:56

Credits: User William Senior

License: Creative Commons Attribution-Share Alike 3.0 Unported License

En este estudio, se empleó una modificación del método de extracciónsedimentaria (SEDEX) para cuantificar las diferentes formas de P en lossedimentos recolectados en río Cuchivero durante marzo del año 2014. El rango devariación de las concentraciones de las diferentes formas de P respecto al P total(PTf) fueron 4,84-7,49 gP/g para la fracción F1 constituida por el Pintercambiable (P-ad) más el asociado a óxidos de hierro (...

File type: Adobe PDF

Comments: 0 | Viewed: 9 times | Downloaded: 1 time

Tags:

PDF
Uploader

Workflow Comportamiento de los metales trazas Cu, P... (1)

Thumb
The concentrations of the metalsCu, Pb, Mn and Zn in fra ctions geochemistry insix sediment core of the lagoon Unare, Venezuela.A procedure of sequential extraction of metalswas determined, for each fraction was usedreagents different and conditions of digestionand the concentrations of metals determinedwith spectrophotometer of Atomic Absorption.The fractionating of metals indicated an order ofdecreasing concentration as it follows: residualfraction > organic/sulfur matter > carbonates...

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow Coastal and Marine Water Quality Indicator... (1)

Thumb
The Workshop “Coastal and Marine Water Quality Indicators and Methodologies to DeterminePollutant Loads in the Wider Caribbean” took place in Havana, Cuba, with the following objectives:? Analyse methodologies used to determine pollutant loads in the marine environment from pointand non-point sources and the main coastal and marine water quality indicators.? Discuss methodologies used for the characterization and quantification of municipal andindustrial solid wastes.? Present pre...

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow PRINCIPALES FUENTES DE CONTAMINACIÓN DEL R... (1)

Thumb
El Manzanares es uno de los principales ríos de Venezuela. Está ubicado en la región nor-oriental del país.

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow PRINCIPALES FUENTES DE CONTAMINACIÓN DEL R... (1)

Thumb
El río Manzanares es uno de los más importantes de Venezuela. Está ubicado en la región nor-oriental,en el Estado Sucre. Posee una cota máxima de 2.200,oo msnm, en el Cerro Las Peonias y una mínimade 00,oo msnm en el Golfo de Cariaco, con una longitud de cauce de 81 km, pendiente mínima de 15%y gasto medio de 1,23 m3/s. Existe una precipitación media anual de 1.328,10 mm, con evaporación de1.929,4 mm (MARNR, 1998). Según el...

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow Phytobenthos and macrophytes of the Manzan... (1)

Thumb
A phytobenthos and macrophytes checklist was carried at the Manzanaresriver basin, Sucre state, Venezuela, from November 2003 to July 2005. Collectwas accomplished manually and material was examined with a stereoscopicloupe and a microscope. With artificial key aid, 21 phytobenthos andmacrophytes species: 4 Cyanophyta, 9 Chlorophyta, 1 Heterokontophyta, 2Rhodophyta, 3 Bryophyta and 2 Magnoliophyta were identified. The basin lowersof the Manzanares presented the higher species number, being th...

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow NIVELES DE METALES PESADOS EN SEDIMENTOS S... (1)

Thumb
To evaluate the water quality along the continental shoresof Venezuela, where fishing communities exploit the clam Tivelamactroides, the concentration of heavy metals (Cu, Mn, Fe, Zn,Cd, Ni, Pb y Cr) was determined in superficial sediments,together with environmental factors (temperature, salinity,dissolved O2, pH, phytoplanctonic biomass, seston, and total Nand P) of the litoral waters of Playa Güiria on the northeasterncoast (Sucre State), and of Río Chico and Boca de Paparo (Mi...

Created: 2016-03-19

Credits: User William Senior

PDF
Uploader

Workflow MANUAL DE ANÁLISIS DE AGUA DE MAR (1)

Thumb
Se describen métodos para el análisis de agua de mar

Created: 2016-03-19

Credits: User William Senior

Uploader

Blob Studies of dissolved carbohydrates (or carbohydrate-...

Created: 2016-03-19 15:31:57

Credits: User William Senior

License: Creative Commons Attribution-Share Alike 3.0 Unported License

Variations in concentrations of dissolved sugars were studied along the salinity gradient of a smallestuary (Elorn, Bay of Brest, France) from February 1985 to January 1986. Total dissolved carbohydrate(TDCHO) and dissolved monosaccharides (MCHO) were measured by the methods of Burneyand Sieburth and Johnson and Sieburth respectively. It must be noted that these methods cannotdistinguish between carbohydrates and carbohydrate-like substances; consequently, these methodsprobably do not closely...

File type: Adobe PDF

Comments: 0 | Viewed: 18 times | Downloaded: 4 times

This File has no tags!

PDF
Uploader

Workflow Growth of the tropical scallop, Euvola (Pe... (1)

Thumb
We compared the growth of the scallop Euuolu (Pecten) ziczuc (L.) in three situations whichpotentially could be used for commercial culture, in cages maintained in suspension, in cages on thebottom and in cages partly buried in a sediment bottom. The latter permitted the scallops to burythemselves as in their natural habitat. Throughout the 7-month study, growth, as measured by shelllength and muscle mass, was by far superior for scallops in the partly buried cages. Possible explanationsfor t...

Created: 2016-03-19

Credits: User William Senior

Results per page:
Sort by: