Results 21 to 30 of about 4,184,128 (240)

Provisional COVID-19 infrastructure induces large, rapid increases in cycling

Proceedings of the National Academy of Sciences of the United States of America, 2021
Significance Active travel makes people healthier and creates a wide range of additional social and environmental benefits. The provision of dedicated infrastructure is considered a crucial policy to increase cycling.
Sebastian Kraus, Nicolas Koch
semanticscholar   +1 more source

Evolution of interfacial dislocation network during anisothermal high-temperature creep of a nickel-based superalloy [PDF]

, 2011
The effect of thermal cycling creep on the dislocation networks at the γ/γ′ interfaces in the MC2 superalloy is investigated. Tensile creep tests were performed under thermal cycling and isothermal conditions at low stress (80 MPa) and high temperature ...
Coujou, Armand, Douin, Joël, Hantcherli, Muriel, Pettinari-Sturmel, Florence, Viguier, Bernard   +4 more
core   +4 more sources

Oxidation-resistant all-perovskite tandem solar cells in substrate configuration

Nature Communications, 2023
The superstate configuration in all-perovskite tandem solar cells is disadvantageous for long-term stability. Here, the authors reverse the processing order and demonstrate substrate configuration to bury oxidizable narrow-bandgap perovskites, and ...
Yurui Wang, Renxing Lin, Xiaoyu Wang, Chenshuaiyu Liu, Yameen Ahmed, Zilong Huang, Zhibin Zhang, Hongjiang Li, Mei Zhang, Yuan Gao, Haowen Luo, Pu Wu, Han Gao, Xuntian Zheng, Manya Li, Zhou Liu, Wenchi Kong, Ludong Li, Kaihui Liu, Makhsud I. Saidaminov, Lijun Zhang, Hairen Tan   +21 more
doaj   +1 more source

Effect of thermal cycling frequency on the durability of Yb-Gd-Y-based thermal barrier coatings [PDF]

, 2019
The effects of thermal cycling frequency and buffer layer on the crack generation and thermal fatigue behaviors of Yb–Gd–Y-stabilized zirconia (YGYZ)-based thermal barrier coatings (TBCs) were investigated through thermally graded mechanical fatigue ...
Choi, Baig-Gyu, Jung, Yeon-Gil, Lu, Zhe, Lyu, Guanlin, Park, Hyeon-Myeong, Zhang, Jing   +5 more
core   +1 more source

Quantitative mixed-valence state identification of metal ions based on fluorescence response of graphene quantum dots

Materials & Design, 2023
Quantitative identification of mixed-valence metal ions is essential for gaining deeper insights into critical chemical and biological processes in environmental science, chemical engineering, and biological systems.
Jing Xu, Juan Yang, Zhongteng Wang, Pei Li, Jian Lan, Risheng Yu, Jie Li, Lu Li, Wei Liu, Junlang Chen, Shangshen Feng, Liang Chen   +11 more
doaj   +1 more source

The physiological and mechanical demands of aerobics, indoor cycling, and netball in recreationally active females [PDF]

, 2019
Background Group-based exercise is a popular method of improving fitness. However, limited research exists on the mul- tidisciplinary responses to group-based exercise. Aims The aim of this study was to compare the physiological and mechanical demands of
GREIG, MATT, MARRIN, KELLY, MCIVER, VICTORIA   +2 more
core   +2 more sources

Groundwater pollution risk evaluation of pharmaceuticals and personal care products in land application of sludge

Shuiwen dizhi gongcheng dizhi, 2023
In order to further clarify the groundwater pollution risk of the pharmaceutical and personal care products (PPCPs), also known as emerging organic contaminants, in land application of sludge, groundwater pollution risks of 29 PPCPs under sand and loam ...
Lin WU, Guowei SHI, Yaci LIU, Yasong LI, Qingsheng LI   +4 more
doaj   +1 more source

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

Nature 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, Yicheng Zhao, Pu Wu, Yuxuan Liu, Xuntian Zheng, Renxing Lin, Sushu Wan, Ke Li, Haowen Luo, Yuxi Tian, Ludong Li, Hairen Tan   +11 more
doaj   +1 more source

What Are the Dominant Synoptic Patterns Leading to the Summer Regional Hourly Extreme Precipitation Events Over Central‐Eastern Tibetan Plateau and Sichuan Basin?

Geophysical Research Letters, 2023
Revealing the synoptic patterns related to hourly extreme precipitation (EP) is very important to deepen our recognition and understanding of EP formation.
Xiaoke Xu, Anning Huang, Danqing Huang, Yan Zhang, Chunlei Gu, Shuxin Cai, Yong Tang, Zhizhan Zhao, Jingwen Zeng   +8 more
doaj   +1 more source

Qualitative accounts of urban commuter cycling [PDF]

, 2007
Purpose ‐ The purpose of this paper is to explore the live experiences of urban commuter cycling (UCC). Design/methodology/approach ‐ In semi-structured interviews, participants described day-to-day experiences of UCC in a single English city.
McKenna, J, Whatling, M
core   +1 more source