Results 31 to 40 of about 3,415,354 (298)

The Nordic Seas carbon budget: Sources, sinks, and uncertainties [PDF]

open access: yes, 2011
A carbon budget for the Nordic Seas is derived by combining recent inorganic carbon data from the CARINA database with relevant volume transports. Values of organic carbon in the Nordic Seas' water masses, the amount of carbon input from river runoff ...
Bellerby, Richard G. J   +9 more
core   +1 more source

Analysis of Differences in Productivity, Profitability and Soil Fertility Between Organic and Conventional Cropping Systems in the Tropics and Sub-tropics

open access: yesJournal of Integrative Agriculture, 2014
Organic farming aims to stimulate soil fertility by avoiding the use of synthetic fertiliser inputs, relying instead on locally available natural resources.
C M Te Pas, R M Rees
doaj   +1 more source

Ecosystem carbon sustainability under different C-equivalence inputs and outputs in dry land [PDF]

open access: yesJournal of the Serbian Chemical Society, 2018
The efficient use of carbon is the principle goal of achieving the agricultural and environmental sustainability. Thus, study was aimed to compare the C-equivalence (Ceq) of inputs and outputs and the C index of sustainability (Is).
Hassan Asma   +3 more
doaj   +1 more source

Soil Carbon Stock and Potential Carbon Storage in the Mangrove Forests of Guangdong

open access: yesRedai dili, 2023
Mangroves occur in coastal intertidal zones and play an important role in terrestrial and marine carbon cycles. Accurate estimations of mangrove carbon stocks and sequestration potential can help quantify the contribution of mangroves to addressing ...
Qin Guoming   +4 more
doaj   +1 more source

On carbon distribution in austenite Fe‑C alloys

open access: yesЛитьë и металлургия, 2022
Based on the calculations of the model of the elementary crystal cell γ‑iron, it is shown that carbon ions cannot be present in its open pores. Carbon in Fe‑C alloys dissolves and distributes mainly as elementary graphite nanocrystals. In steel austenite,
E. I. Marukovich   +2 more
doaj   +1 more source

The Conversion of Sorghum (Sorghum bicolor (L.) Moench) Stem Waste into Activated Carbon by the Pyrolysis Method Using ZnCl2 Activator

open access: yesEquilibrium, 2023
. The use of activated carbon in Indonesia is expanding along with the increasing demand for activated carbon. Therefore, it is necessary to continue to search for raw materials and methods for producing activated carbon to produce high-quality activated
Natasya Dian Andini   +4 more
doaj   +1 more source

Thermo-mechanical and tribological properties of phenolic polymers composites and C-C composites [PDF]

open access: yesINCAS Bulletin, 2010
Formaldehyde resin-based composites have been an inaugural step in obtaining and usingcomposite materials and they have grown rapidly because of their multiple uses, especially inelectrical and aeronautical field.Phenolic matrix composites represent a ...
Virgil MARINESCU   +6 more
doaj   +1 more source

TOPoS: II. On the bimodality of carbon abundance in CEMP stars. Implications on the early chemical evolution of galaxies [PDF]

open access: yes, 2015
In the course of the TOPoS (Turn Off Primordial Stars) survey, aimed at discovering the lowest metallicity stars, we have found several carbon-enhanced metal-poor (CEMP) stars. We here present our analysis of six CEMP stars.
Bonifacio, P.   +20 more
core   +5 more sources

The origin and fate of C during alteration of the oceanic crust

open access: yesComptes Rendus. Géoscience, 2021
The contents and isotope compositions of water and carbon, including total, reduced, and inorganic (carbonate) C, were studied in 170 My altered oceanic basalts from Ocean Drilling Program Hole 801C in the western Pacific Ocean.
Martinez, Isabelle   +4 more
doaj   +1 more source

Organic carbon transport and C/N ratio variations in a large tropical river: Godavari as a case study, India [PDF]

open access: yes, 2005
This study gives an insight into the source of organic carbon and nitrogen in the Godavari river and its tributaries, the yield of organic carbon from the catchment, seasonal variability in their concentration and the ultimate flux of organic and ...
Balakrishna, Keshava, Probst, Jean-Luc
core   +2 more sources

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