Results 41 to 50 of about 52,957 (305)

A Three End-Member Mixing Model Based on Isotopic Composition and Elemental Ratio

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2007
A three end-member mixing model based on nitrogen isotopic composition and organic carbon to nitrogen ratio of suspended particulate matter in an aquatic environment has been developed.
Kon-Kee Liu Shuh-Ji Kao
doaj   +1 more source

Not all calcite ballast is created equal: differing effects of foraminiferan and coccolith calcite on the formation and sinking of aggregates [PDF]

open access: yes, 2014
Correlation between particulate organic carbon (POC) and calcium carbonate sinking through the deep ocean has led to the idea that ballast provided by calcium carbonate is important for the export of POC from the surface ocean.
K. Schmidt   +9 more
core   +1 more source

Biogeochemical consequences of vertical and lateral transport of particulate organic matter in the southern North Sea: A multiproxy approach [PDF]

open access: yes, 2015
Vertical and lateral transports are of importance in continental shelf systems such as the North Sea andplay a major role in the processing of organic matter.
Middelburg, J.J.   +6 more
core   +1 more source

Interactions between metals and soil organic matter in various particle size fractions of soil contaminated with waste water [PDF]

open access: yes, 2009
Only scarce field studies concern the consequences of natural soil organic matter (SOM) and metal interactions on SOM dynamics in soils. We investigated the interactions of four metals (Pb, Zn, Cu and Cd) with the SOM associated to five different size ...
Quenea, Katell   +5 more
core   +1 more source

Estimation of Suspended Matter, Organic Carbon, and Chlorophyll-a Concentrations from Particle Size and Refractive Index Distributions

open access: yesApplied Sciences, 2018
Models of particle density and of organic carbon and chlorophyll-a intraparticle concentration were applied to particle size distributions and particle real refractive index distributions determined from flow cytometry measurements of natural seawater ...
Jacopo Agagliate   +3 more
doaj   +1 more source

Carbon sequestration potential of tea garden soil in northwest Zhejiang and its accumulation characteristic on different fractions of organic carbon

open access: yes浙江大学学报. 农业与生命科学版, 2016
Organic carbon is the basis of soil system, which plays an important role in the soil quality and regulating the supply of nutrients. Physical, chemical and biological properties and productivity of soil were all closely related to the content and ...
KONG Zhangliang
doaj   +1 more source

Particulate Mercury and Particulate Organic Matter in the Itenez Basin (Bolivia)

open access: yesApplied Sciences, 2020
In rivers and other freshwater bodies, the presence of mercury can be due to direct contamination by anthropic activities such as gold mining. However, it can also be attributed to atmospheric deposition and erosion, runoff, or lixiviation from ...
Fabiola Guzmán-Uria   +3 more
doaj   +1 more source

Input of particulate heavy metals from rivers and associated sedimentary deposits on the Gulf of Lion continental shelf [PDF]

open access: yes, 2008
Fluxes of the heavy metals chromium (Cr), cobalt (Co), nickel (Ni), copper (Cu), lead (Pb), cadmium (Cd) and zinc (Zn) delivered by rivers to the Gulf of Lion (NW Mediterranean Sea) were estimated over a three year study of the River Rhone and its ...
Probst, Jean-Luc   +5 more
core   +1 more source

Atmospheric CO2 consumption by continental erosion : present-day controls and implications for the last glacial maximum [PDF]

open access: yes, 1998
The export of carbon from land to sea by rivers represents a major link in the global carbon cycle. For all principal carbon forms, the main factors that control the present-day fluxes at the global scale have been determined in order to establish global
Probst, Jean-Luc   +8 more
core   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

open access: yesAdvanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy