Results 11 to 20 of about 262,162 (255)

Associations of residential walkability and greenness with arterial stiffness in the UK Biobank

open access: yesEnvironment International, 2022
Background: Arterial stiffness is a key non-invasive marker of early vascular ageing, however, little is known of its associations with urban built environment.
Ka Yan Lai   +4 more
doaj   +1 more source

Pressure Driven Alkane Dehydrogenation by Palladium Metal

open access: yesAdvanced Materials Interfaces, 2023
Dehydrogenation of alkanes is of increasing importance in fulfilling global demand for olefins and offers a potential source of carbon‐neutral hydrogen as a co‐product. Currently commercial dehydrogenation processes occur at high‐temperatures (500–900 °C)
Mungo Frost   +4 more
doaj   +1 more source

Interference of Urban Morphological Parameters in the Spatiotemporal Distribution of PM10 and NO2, Taking Dalian as an Example

open access: yesAtmosphere, 2022
Recently, air quality has become a hot topic due to its profound impact on the quality of the human living environment. This paper selects the tourist city of Dalian as the research object.
Yuan Su   +4 more
doaj   +1 more source

Urbanization is associated with shifts in bumblebee body size, with cascading effects on pollination

open access: yesEvolutionary Applications, 2021
Urbanization is a global phenomenon with major effects on species, the structure of community functional traits and ecological interactions. Body size is a key species trait linked to metabolism, life‐history and dispersal as well as a major determinant ...
Panagiotis Theodorou   +3 more
doaj   +1 more source

Effect of road traffic on amphibian density [PDF]

open access: yesBiological Conservation, 1995
We studied the effect of traffic intensity on local abundance of anurans. We counted dead and live frogs and toads per km and estimated frog and toad local abundances using breeding chorus intensities on similar roads through similar habitats, but with different levels of traffic intensity. After correcting for effects of date, local habitat, time, and
Fahrig, Lenore   +4 more
openaire   +3 more sources

Les vitesses dans l’aire urbaine dijonnaise : un modèle fondé sur la fonction logistique et la courbe de congestion routière débit-vitesse

open access: yesCybergeo, 2005
Despite having begun with a series of statement reports in the sixties, studies of urban sprawl today focus more on an understanding of the phenomenon and explanations of it (in particular, in its relation to transport).
Cyril Enault
doaj   +1 more source

Road Side Unit Deployment: A Density-Based Approach [PDF]

open access: yesIEEE Intelligent Transportation Systems Magazine, 2013
This work was partially supported by the Ministerio de Educacion y Ciencia, Spain, under Grant TIN2011-27543-C03-01, as well as by the Fundacion Universitaria Antonio Gargallo (FUAG), and the Caja de Ahorros de la Inmaculada (CAI).
Javier Barrachina   +6 more
openaire   +3 more sources

The influence of rural road development on forest extent changes over the three time periods: A case study of Chegeni region, Lorestan province

open access: yesJournal of Forest Science, 2018
The objective of this study was to investigate the influence of the development of road quality (surfacing condition and road type) and road quantity (road density and distance to main road) on forest extent changes in a region in Zagros forests of Iran ...
Ayoob REZAEE MOTLAQ   +3 more
doaj   +1 more source

Exploring the Effects of Urban Built Environment on Road Travel Speed Variability with a Spatial Panel Data Model

open access: yesISPRS International Journal of Geo-Information, 2021
Road traffic congestion is a common problem in most large cities, and exploring the root causes is essential to alleviate traffic congestion. Travel behavior is closely related to the built environment, and affects road travel speed.
Guangyue Nian, Jian Sun, Jianyun Huang
doaj   +1 more source

Osteoporosis Knowledge, Self-Efficacy, and Beliefs among College Students in the USA and China

open access: yesJournal of Osteoporosis, 2011
This study investigated differences in osteoporosis knowledge, self-efficacy, and health beliefs among Chinese and American college students. Information obtained will be used in developing osteoporosis prevention programs for younger adults.
M. Allison Ford   +4 more
doaj   +1 more source

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