Results 21 to 30 of about 4,205,053 (351)

COVID-19 Impacts on Cycling, 2019–2020

open access: yes, 2021
The COVID-19 pandemic has had an enormous impact on travel behaviour in most of the world. This editorial examines the available evidence about the impact of the pandemic on cycling in various citi...
R. Buehler, J. Pucher
semanticscholar   +1 more source

Cycling behaviour in 17 countries across 6 continents: levels of cycling, who cycles, for what purpose, and how far?

open access: yesTransport reviews, 2021
International comparisons of cycling behaviour have typically been limited to high-income countries and often limited to the prevalence of cycling, with lack of discussions on demographic and trip characteristics. We used a combination of city, regional,
Rahul Goel   +13 more
semanticscholar   +1 more source

Acute post-exercise recovery strategies in Cycling: A Review [PDF]

open access: yes, 2018
Cycling events often include multiple races a day or racing over consecutive days. Congested competition schedules and increased training load have led to the implementation of recovery strategies; with the goal of alleviating postexercise fatigue and ...
Overmayer, Ryan   +2 more
core   +1 more source

The Seasonal Cycle and the Business Cycle [PDF]

open access: yesJournal of Political Economy, 1989
Almost all recent research on macroeconomic fluctuations has worked with seasonally-adjusted or annual data. This paper takes a different approach by examining the seasonal movements themselves. The authors' results show that seasonal fluctuations are an important source of variation in all macroeconomic quantity variables, but are small or absent in ...
Robert B. Barsky, Jeffrey A. Miron
openaire   +2 more sources

Unknotted Cycles

open access: yesThe Electronic Journal of Combinatorics, 2022
Noting that cycle diagrams of permutations visually resemble grid diagrams used to depict knots and links in topology, we consider the knot (or link) obtained from the cycle diagram of a permutation. We show that the permutations which correspond in this way to an unknot are enumerated by the Schröder numbers, and also enumerate the permutations ...
Christopher Cornwell, Nathan McNew
openaire   +4 more sources

High rate and stable cycling of lithium metal anode

open access: yesNature Communications, 2015
Lithium metal is an ideal battery anode. However, dendrite growth and limited Coulombic efficiency during cycling have prevented its practical application in rechargeable batteries.
Jiangfeng Qian   +6 more
semanticscholar   +1 more source

Harrogate consensus agreement: Cycling-specific sport-related concussion

open access: yesSports Medicine and Health Science, 2021
Sport-related concussion (SRC) is a common and increasingly recognised sport-related injury and accounts for between 1% and 9% of all cycling-specific injuries.
Jeroen Swart   +6 more
doaj   +1 more source

Heterojunction formed via 3D-to-2D perovskite conversion for photostable wide-bandgap perovskite solar cells

open access: yesNature Communications, 2023
Light-induced halide segregation constrains the photovoltaic performance and stability of wide-bandgap perovskite solar cells and tandem cells. The implementation of an intermixed two-dimensional/three-dimensional heterostructure via solution post ...
Jin Wen   +11 more
doaj   +1 more source

Extending Cycles Locally to Hamilton Cycles [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2016
A Hamilton circle in an infinite graph is a homeomorphic copy of the  unit circle $S^1$ that contains all vertices and all ends precisely once. We prove that every connected, locally connected, locally finite, claw-free graph has such a Hamilton circle, extending a result of Oberly and Sumner to infinite graphs.
Matthias Hamann   +2 more
openaire   +3 more sources

Pollution Level, Sources, and Lung Cancer Risk of PM10-Bound Polycyclic Aromatic Hydrocarbons (PAHs) in Summer in Nanjing, China

open access: yesJournal of Chemistry, 2016
This study concentrated on the pollution level, sources, and lung cancer risk of PM10-bound polycyclic aromatic hydrocarbons (PAHs) in summer in Nanjing, China. PM10 samples were collected in summer of the year 2015 in Nanjing.
Shiqi Sun   +11 more
doaj   +1 more source

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