Results 11 to 20 of about 2,489,717 (313)

Useful Field of View Test [PDF]

Gerontology, 2014
The useful field of view test was developed to reflect the visual difficulties that older adults experience with everyday tasks. Importantly, the useful field of view test (UFOV) is one of the most extensively researched and promising predictor tests for a range of driving outcomes measures, including driving ability and crash risk as well as other ...
Wood, Joanne, Owsley, Cynthia
openaire   +4 more sources

Supporting Structure of Steel Corrugated Plate-Mold Bag Concrete and Its Application in a Circular Shaft

Applied Sciences, 2023
To cater to the problems of a poor working environment, a large amount of rebound, and the high energy consumption of sprayed concrete in tunnel engineering, this paper proposes a new support scheme with a steel corrugated plate combined with mold bag ...
Pengfei Li, Shuo Wang, Mingju Zhang, Zhengdong Huang   +3 more
doaj   +1 more source

Measurement report: Size-resolved and seasonal variations in aerosol hygroscopicity dominated by organic formation and aging: insights from a year-long observation in Nanjing [PDF]

Atmospheric Chemistry and Physics
Aerosol hygroscopicity plays a significant role in atmospheric chemistry, radiation, and climate effects. While previous studies have investigated regional differences in aerosol hygroscopicity, long-term observational studies focusing on seasonal ...
J. Zhang, Y. Wang, J. Xu, X. Zuo, C. Lu, B. Zhu, Y. Yang, X. Yan, Y. Sun   +8 more
doaj   +1 more source

Development and Evaluation from Laboratory to Field Trial of a Dual-Purpose Fracturing Nanofluid: Inhibition of Associated Formation Damage and Increasing Heavy Crude Oil Mobility

Nanomaterials, 2022
This study aims to develop and evaluate fracturing nanofluids from the laboratory to the field trial with the dual purpose of increasing heavy crude oil mobility and reducing formation damage caused by the remaining fracturing fluid (FF).
María A. Giraldo, Richard D. Zabala, Jorge I. Bahamón, Juan M. Ulloa, José M. Usurriaga, José C. Cárdenas, Camilo Mazo, Juan D. Guzmán, Sergio H. Lopera, Camilo A. Franco, Farid B. Cortés   +10 more
doaj   +1 more source

Measurement report: Insights into seasonal dynamics and planetary boundary layer influences on aerosol chemical components in suburban Nanjing from one-year observation [PDF]

Atmospheric Chemistry and Physics
Understanding the seasonal behavior of fine particles (PM2.5) and its chemical components is critical for improving air quality in the Yangtze River Delta (YRD), a densely populated and polluted region in China.
J. Xu, Y. Zhang, Y. Zhang, Y. Wang, X. Yan, B. Zhu, C. Lu, Y. Yang, Y. Sun, J. Zhang, X. Zuo, Z. Han, R. Zhang   +12 more
doaj   +1 more source

Investigation into Experimental and DEM Simulation of Guide Blade Optimum Arrangement in Multi-Rotor Combine Harvesters

Agriculture, 2022
The cleaning performance of the cleaning shoe of a multi-rotor combine harvester has proven to be poor owing to the threshed output entering the cleaning section in an uneven manner. Experimental results indicated that the arrangement of the guide blades
Zhenwei Liang, Jun Li, Jianmin Liang, Yifan Shao, Tengfei Zhou, Zengyong Si, Yaoming Li   +6 more
doaj   +1 more source

Influence of depressurization rate on gas production capacity of high-rank coal in the south of Qinshui Basin, China

Petroleum Exploration and Development, 2019
A desorption simulation experiment with the condition of simulated strata was designed. The experiment, under different depressurizing rates and the same fluid saturation, was conducted on the sample from 3# coal of Daning coal mine in Jincheng, Shanxi ...
Xuefeng SU, Yan LIU, Zhouqi CUI, Jianguo ZHANG, Li YU, Kai WANG   +5 more
doaj   +1 more source

Space-ground integration system of methane emission monitoring and quantification: cases in Dongying, China

Frontiers in Earth Science
Calibrating traditional inventory-based emission estimates with top-down point source inversion results is of significant importance. To address the challenges posed by satellite remote sensing in accurately assessing methane point source emissions and ...
Hu He, Dong Sun, Jingang Zhao, Xin Yuan, Haoran Li, Fang Liu, Wei Wang   +6 more
doaj   +1 more source

Assessment of Multiple Planetary Boundary Layer Height Retrieval Methods and Their Impact on PM_2.5 and Its Chemical Compositions throughout a Year in Nanjing

Remote Sensing
In this study, we investigate the planetary boundary layer height (PBLH) using micro-pulse lidar (MPL) and microwave radiometer (MWR) methods, examining its relationship with the mass concentration of particles less than 2.5 µm in aerodynamic diameter ...
Zhanghanshu Han, Yuying Wang, Jialu Xu, Yi Shang, Zhanqing Li, Chunsong Lu, Puning Zhan, Xiaorui Song, Min Lv, Yinshan Yang   +9 more
doaj   +1 more source

Field Test Research on the Downhole Multiphysics Micro-Measurer Based on the MEMS Microchip

Frontiers in Earth Science, 2023
Since pressure while drilling (PWD) has the disadvantages of single-point measurement and high cost of application, a micro-measurer based on MEMS (micro-electromechanical systems) sensor technology, which can measure downhole temperature, pressure ...
Mu Li, Mu Li, Wei Liu, Hengrui Zhang, Hengrui Zhang, Chunjing Tang, Jiasheng Fu, Xiaoqiang Zhai, Xiaoqiang Zhai, Hao Wang   +9 more
doaj   +1 more source