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Meiofauna enhances organic matter mineralization in soft sediment ecosystems
soft sediment ecosystems Meiofauna enhances
2014/4/4
We investigated the influence of meiofauna on the benthic decomposition of a radiolabeled diatom bloom by
measuring the production of 14
CO2
in a laboratory microcosm. Mineralization of the diatom ...
Floodplain influence on dissolved organic matter composition and export from the Mississippi–Atchafalaya River system to the Gulf of Mexico
Floodplain on dissolved organic matter composition export from the Mississippi Atchafalaya River system to the Gulf of Mexico
2014/4/3
Comparisons of the concentrations and compositionsof dissolved organic matter (DOM) between the lower Mississippi River (MR) and its distributary, the Atchafalaya River (AR), indicated a strong influe...
The spectral slope coefficient of chromophoric dissolved organic matter (S275–295)asa tracer of terrigenous dissolved organic carbon in river-influenced ocean margins
spectral slope coefficient chromophoric dissolved organic matter terrigenous dissolved organic carbon river-influenced ocean margins
2014/4/3
The present study demonstrates that the spectral slope coefficient of chromophoric dissolved organic matter(CDOM) between 275 nm and 295 nm (S275–295) can be used as a tracer of the percent terrigenou...
The ‘‘salt wedge pump’’: Convection-driven pore-water exchange as a source of dissolved organic and inorganic carbon and nitrogen to an estuary
salt wedge pump Convection-driven pore-water exchange a source of dissolved organic inorganic carbon nitrogen to an estuary
2014/4/3
Hypoxia and anoxia in coastal waters have typically been explained by the respiration of sinking organic matter associated with nutrient over-enrichment and phytoplankton blooms. Here, we assess wheth...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization the key pathways dissimilatory nitrate reduction their response complex organic substrates in hyporheic sediments
2014/4/2
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed r...
Constrained microbial processing of allochthonous organic carbon in boreal lake sediments
Constrained microbial processing allochthonous organic carbon boreal lake sediments
2014/4/2
We investigated sediment bacterial metabolism in eight lakes with different inputs of allochthonous and autochthonous organic carbon in south-central Sweden. Sediment bacterial production, mineralizat...
A substantial export flux of particulate organic carbon linked to sinking dead copepods during winter 2007–2008 in the Amundsen Gulf (southeastern Beaufort Sea, Arctic Ocean)
A substantial export flux particulate organic carbon linked sinking dead copepods during 2007–2008 the Amundsen Gulf (southeastern Beaufort Sea, Arctic Ocean)
2014/4/2
In the Arctic Ocean, vertical fluxes of particulate organic carbon (POC) remain low during the dark winter period because POC fluxes are derived from photosynthetic production. Passively sinking dead ...
A mechanistic-based framework to understand how dissolved organic carbon is processed in a large fluvial lake
bacterial growth primary production hydrodynamic regime photodegradation residence time ecosystem-based model
2014/4/1
Dissolved organic carbon (DOC) plays a fundamental role in the ecology of aquatic systems. Our current
understanding of the DOC dynamic in fluvial systems, however, is mostly based on empirical...
Impact of Nitrogen Oxides, Volatile Organic Compounds and Black Carbon on Atmospheric Ozone Levels at a Semi Arid Urban Site in Hyderabad
Trace gas Ozone Volatile organic compounds Black carbon Meteorology and oxides of nitrogen.
2016/3/25
The surface level ozone (O3), nitrogen oxides (NOx = NO2 + NO), volatile organic compounds (VOCs), black carbon (BC)
and meteorological parameters were continuously monitored for the period of one ye...
The role of mineral surfaces in the preservation and transformation of organic carbon: meso- to nano– scale spatial complexity of organic matter forms in organic-rich shales
mineral surfaces preservation transformation organic carbon meso- to nano– scale spatial complexity organic matter forms organic-rich shales
2012/3/30
Sequestration of organic matter (OM) in sediments is a fundamental biogeochemical process that regulates planetary temperature, the flux of free oxygen to the atmosphere and oceans, and the distributi...
Organic thin-film transistors with reduced photosensitivity
Organic Photosensitivity Nanoparticle Dielectrics Thin-film transistors
2011/11/24
Organic thin-film transistors with a minimal threshold voltage shift and a more stable photocurrent under illuminated conditions can be made by embedding titanium dioxide (TiO2) nanoparticles into a p...
Rapid Lab-Scale Microwave-Assisted Extraction and Analysis of Anthropogenic Organic Chemicals in River Sediments
Microwave Assisted Extraction Para-Cresol Phenanthrene
2013/3/7
An Ethos EZ Microwave Lab Station is employed in the development of a robust and efficient microwave extraction method for organic contaminants of anthropogenic origin in river sediments. The extracti...
Exciton-polariton emission from organic semiconductor optical waveguides
Exciton-polariton emission organic semiconductor optical waveguides
2011/8/17
Abstract: We photo-excite slab polymer waveguides doped with J-aggregating dye molecules and measure the leaky emission from strongly coupled waveguide exciton polariton modes at room temperature. We ...
Interstellar ices as witnesses of star formation: selective deuteration of water and organic molecules unveiled
dust, extinction - ISM: abundances - ISM: molecules - stars: formation
2011/9/30
The environments where stars are born contain gas and dust grains covered by icy mantles. As the star forms and heats up its surroundings, the ices evaporate which leads to a very complex chemistry wi...
Characterization and Properties of Organic Silicon Modified Vegetable Oil Fatliquor
Fatliquor Leather Silicon Vegetable Oil
2011/11/23
The vegetable oil fatliquor (VF) was prepared by rapeseed oil, 1, 2-ethylenediamine and acrylic acid. The synthesis of a silicon modified vegetable oil fatliquor (SVF) was carried out using VF and pol...