Results 31 to 40 of about 734,199 (300)

Are income-related differences in active travel associated with physical environmental characteristics? A multi-level ecological approach [PDF]

open access: yes, 2015
Background: Rates of active travel vary by socio-economic position, with higher rates generally observed among less affluent populations. Aspects of both social and built environments have been shown to affect active travel, but little research has ...
Mitchell, Richard   +4 more
core   +1 more source

Carbon-based perovskite solar cells with electron and hole-transporting/-blocking layers

open access: yesMaterials Futures, 2023
Towards commercialization of perovskite solar cells (PSCs), further reducing the cost and increasing the stability of PSCs have been the most important tasks of researchers, as the efficiency of single-junction PSCs has reached a competitive level among ...
Wenjin Yu   +7 more
doaj   +1 more source

Modeling Nucleation and Growth of Zinc Oxide During Discharge of Primary Zinc-Air Batteries [PDF]

open access: yes, 2017
Metal-air batteries are among the most promising next-generation energy storage devices. Relying on abundant materials and offering high energy densities, potential applications lie in the fields of electro-mobility, portable electronics, and stationary ...
Horstmann, Birger   +3 more
core   +2 more sources

Carbon Footprints of Active and Non-Active Transport Modes: Hierarchy and Intergenerational Narrative Analyses

open access: yesSustainability, 2023
This paper aimed to (1) develop a hierarchy for understanding the impacts of active and non-active transport modes on the environment and (2) analyse the adoption of active transportation between older and younger people. A narrative review with two parts was adopted to develop the hierarchy. In the first part, a framework was adopted to map active and
Nestor Asiamah   +3 more
openaire   +2 more sources

Nitrogen‐Doped Hard Carbon on Nickel Foam as Free‐Standing Anodes for High‐Performance Sodium‐Ion Batteries

open access: yesChemElectroChem, 2020
Nitrogen‐doped hard carbon on Ni foam (NC/NF) with numerous active sites, expanded interlayer distance (0.49 nm), and highly ordered pseudo‐graphic structure is synthesized by a melamine‐assisted hydrothermal pretreatment and subsequent pyrolysis ...
Dr. Ruizi Li   +8 more
doaj   +1 more source

Mitigation and adaptation strategies for a carbon neutral grape and wine sector

open access: yesBIO Web of Conferences, 2023
The Australian grape and wine sector has committed to reducing its carbon footprint by an active mitigation policy, concentrating in the shorter-term future on reducing Scope 1 and 2 emissions.
Smart Richard   +2 more
doaj   +1 more source

Optomechanical measurement of thermal transport in two-dimensional MoSe2 lattices [PDF]

open access: yes, 2019
Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a novel approach to
Bachtold, Adrian   +9 more
core   +4 more sources

Urban and transport planning pathways to carbon neutral, liveable and healthy cities; A review of the current evidence

open access: yesEnvironment International, 2020
Introduction: Half the world population lives in cities and this is likely to increase to 70% over the next 20 years. Suboptimal urban and transport planning has led to e.g.
Mark J. Nieuwenhuijsen
doaj   +1 more source

Exciton binding energies in carbon nanotubes from two-photon photoluminescence

open access: yes, 2005
One- and two-photon luminescence excitation spectroscopy showed a series of distinct excitonic states in single-walled carbon nanotubes. The energy splitting between one- and two-photon-active exciton states of different wavefunction symmetry is the ...
A. Ruini   +12 more
core   +1 more source

GUP1 and its close homologue GUP2, encoding multi-membrane-spanning proteins involved in active glycerol uptake in Saccharomyces cerevisiae [PDF]

open access: yes, 2000
Many yeast species can utilise glycerol, both as sole carbon source and as an osmolyte. In Saccharomyces cerevisiae, physiological studies have previously shown the presence of an active uptake system driven by electrogenic proton symport.
Albertyn J.   +27 more
core   +1 more source

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