Results 221 to 230 of about 128,534 (314)

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Surface swabbing of nightclub venues to monitor the presence of cocaine, ketamine, and MDMA. [PDF]

Am J Drug Alcohol Abuse
Palamar JJ, Denn MT, Abukahok N, Acosta P, Walton SE, Stang B, Krotulski AJ.   +6 more
europepmc   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Analysis of urban subway construction collapse disaster chain and research on chain breaking and disaster reduction. [PDF]

PLoS One
Zhang Y, Gu Y, Lian N, Peng L, Hao Y, Wang W, Tian R.   +6 more
europepmc   +1 more source

Uniaxial compressive strength prediction and ratio parameter optimization of titanium tailings composite backfill materials using intelligent hybrid models

Deep Underground Science and Engineering, EarlyView.
Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
wiley   +1 more source

Human Mobility Datasets in the Complex Metro System of Shanghai. [PDF]

Sci Data
Sun P, Yang J, Huang Z, Huang S, Xu S, Wang W, Guo W, Feng Y, Zhai X, Yang T, Yang X, Jin Y, Xu Y.   +12 more
europepmc   +1 more source

Over three‐quarters of earthworm species lack protection in China, a crisis exacerbated by climate change

Ecography, EarlyView.
Earthworms, as ‘ecosystem engineers', play a crucial role in regulating ecosystem functions and shaping community structures. Due to climate change, earthworms face severe survival pressures and extinction risks. However, whether conservation efforts targeting aboveground biodiversity can cover the long‐neglected earthworm diversity remains unknown. To
Yajie Zhou, Shuo Zhang, Wen Qin, Zhuoyi Wu, , Shaolin Peng, Ting Zhou   +6 more
wiley   +1 more source

Study on the impact of urban underground public space expansion on near-ground carbon monoxide concentrations. [PDF]

Sci Rep
Zhuang G, Qiu P, Pang L, Xing H, Shen J, Wang Y, Fang W.   +6 more
europepmc   +1 more source

An Ultra‐Low‐Power and High‐Temperature‐Homogeneity Wafer‐Scale Infrared Source

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A wafer‐scale MEMS infrared source with an Al@nanoforest radiation layer achieves high emissivity and temperature homogeneity at low power, enabling efficient CO2 detection for smart agriculture. Non‐dispersive infrared gas sensors, renowned for their high selectivity and high reliability, are extensively employed in applications of smart agriculture ...
Qirui Zhang, Shuxin Chen, Meng Shi, Xin Liu, Hanhui Li, Ruitao Tao, Yu Liu, Na Zhou, Wenwu Li, Haiyang Mao   +9 more
wiley   +1 more source

A condition diagnosis method for subway track structures employing distributed optical fiber sensing. [PDF]

Sci Rep
Han H, Cai X, Gao L.
europepmc   +1 more source