Results 11 to 20 of about 217,373 (308)

Carbon sequestration by multiple biological pump pathways in a coastal upwelling biome

open access: yesNature Communications, 2023
Multiple processes transport carbon into the deep ocean as part of the biological carbon pump, leading to long-term carbon sequestration. However, our ability to predict future changes in these processes is hampered by the absence of studies that have ...
Michael R. Stukel   +5 more
doaj   +1 more source

Active Travel’s Contribution to Climate Change Mitigation: Research Summary and Outlook

open access: yesActive Travel Studies, 2021
Active travel (walking, cycling or scooting for transport) is considered a healthy and sustainable form of getting from A to B. The net effects of active travel on mobility-related carbon dioxide (CO2) emissions are complex and remarkably under ...
Christian Brand
doaj   +2 more sources

The transport properties of activated carbon fibers [PDF]

open access: yesJournal of Materials Research, 1991
The transport properties of isotropic pitch-based carbon fibers with surface area 1000 m2/g have been investigated. We report preliminary results on the electrical conductivity, the magnetoresistance, the thermal conductivity, and the thermopower of these fibers as a function of temperature.
S.L. di Vittorio   +5 more
openaire   +1 more source

Mechanically activated ionic transport across single-digit carbon nanotubes [PDF]

open access: yesNature Materials, 2020
Fluid and ionic transport at nanoscale recently highlighted a wealth of exotic behaviours. However, the artificial nanofluidic devices are still far from the advanced functionalities existing in biological systems, such as electrically and mechanically activated transport.
Alice Marcotte   +4 more
openaire   +3 more sources

Evidence for late winter biogeochemical connectivity in permafrost soils

open access: yesCommunications Earth & Environment, 2023
Longer periods of biogeochemical connectivity in soil porewaters with a deeper active layer suggest early organic carbon transport during the dormant season, according to silicon isotope compositions of permafrost soil porewaters in Alaska.
Catherine Hirst   +7 more
doaj   +1 more source

The transport properties of activated carbon fibers [PDF]

open access: yes, 1990
The transport properties of activated isotropic pitch-based carbon fibers with surface area 1000 m{sup 2}/g have been investigated. We report preliminary results on the electrical conductivity, the magnetoresistance, the thermal conductivity and the thermopower of these fibers as a function of temperature.
di Vittorio, S. L.   +4 more
openaire   +2 more sources

Associations of health, physical activity and weight status with motorised travel and transport carbon dioxide emissions: a cross-sectional, observational study. [PDF]

open access: yes, 2012
BACKGROUND: Motorised travel and associated carbon dioxide (CO₂) emissions generate substantial health costs; in the case of motorised travel, this may include contributing to rising obesity levels.
Goodman, Anna   +8 more
core   +1 more source

Characterization of pyruvate uptake in Escherichia coli K-12. [PDF]

open access: yesPLoS ONE, 2013
The monocarboxylate pyruvate is an important metabolite and can serve as sole carbon source for Escherichia coli. Although specific pyruvate transporters have been identified in two bacterial species, pyruvate transport is not well understood in E. coli.
Jens Kreth   +2 more
doaj   +1 more source

Investigation of carbon nanotube quantum dots connected to ferromagnetic leads [PDF]

open access: yes, 2015
The implementation of ferromagnetic contacts in complex nanoelectronic devices, e.g. in spin-valves bears great potential for applications and fundamental investigations. Spin-valves are structures with two magnetic contacts and a non-magnetic medium (
Samm, Julia
core   +1 more source

Impact of human activities on organic carbon transport in the Yellow River [PDF]

open access: yesBiogeosciences, 2013
Abstract. Using data from four field investigations between 2003 and 2009 along the Yellow River mainstream, we examined the transport features and seasonal variations of organic carbon, with a focus on contrasting the impacts of human activities with those of natural processes.
L. J. Zhang   +4 more
openaire   +4 more sources

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