Article
Computer Science, Interdisciplinary Applications
Peng Chu, Heping Xie, Mingzhong Gao, Cunbao Li, Delei Shang, Qingquan Liu, Liang Wang
Summary: This study proposed a gas migration model considering desorption hysteresis effects and compared it with a model without such effects. The results showed that the desorption hysteresis effects significantly affect gas extraction and coal seam permeability, especially in coal seams with higher permeability. Therefore, it is important to consider desorption hysteresis effects in predicting coalbed methane extraction, calculating permeability, and controlling the risk of delayed coal and gas outbursts.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Geosciences, Multidisciplinary
Qianhua Xiao, Huailin Wang, Yanhui Yang, Zhiqiang Li, Bocai Jiang, Jiahao Li, Zuping Xiang
Summary: The productivity evaluation of CBM wells is crucial for efficient development of CBM. This study establishes a mathematical model of fluid flow through porous media and a productivity evaluation model for CBM based on a clear understanding of its occurrence states and flow mechanisms. Factors such as slip flow, diffusion, stress sensitivity, and matrix shrinkage are considered in the model. Numerical simulations and analysis are conducted to provide insights into CBM production performance.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Xueqi Yin, Guoke Wei, Aijun Gong, Xianglin Zhou
Summary: This paper investigates the effect of Fe3O4 porosity on electromagnetic wave loss. Simulation and experimental results confirm that increasing the porosity improves impedance matching characteristics and enhances electromagnetic wave loss.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Environmental
K. L. Spencer, J. A. Wheatland, S. J. Carr, A. J. Manning, A. J. Bushby, C. Gu, L. Botto, T. Lawrence
Summary: This study demonstrates that 2D approaches underestimate the shape complexity and overestimate the size and mass settling flux of natural sediment flocs. This has significant implications for estimating sediment flux in aquatic environments and has the potential to improve the accuracy of current field-monitoring techniques.
Review
Materials Science, Textiles
Shaoju Fu, Pei Zeng, Linghui Zhou, Xiaoning Tang, Yanping Liu
Summary: This study investigated the relationship between structural parameters and sound absorption in wet knit spacer fabrics. The results showed that increasing thickness and airflow resistivity can enhance the sound absorption performance.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Environmental Sciences
Hongjuan Bai, Edvina Lamy
Summary: Experimental results showed that the internal and inter-aggregated pore spaces of the medium had an impact on bacterial transport and retention under unsaturated flow conditions. Capillary energy was found to be higher than other forces at the air-water-solid interfaces, but it was not the main driving force for bacterial deposition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Seo Young Ahn, Yanbo Wang, Bozo Vazic, Robert Wheeler, Pania Newell
Summary: Micropores play critical roles in materials, and their morphology significantly affects mechanical properties. In this study, micro-architected porous samples were created using nanolithography, and the impact of pore morphology was investigated through in situ micropillar compression tests. The results showed that porosity is the primary factor influencing the mechanical response, with pore geometry also having a significant impact on certain parameters. The study highlights the potential for tailoring porous materials to achieve desired mechanical properties based on specific engineering applications.
Review
Polymer Science
Yena Liu, Peipei Wang, Jing Tian, Farzad Seidi, Jiaqi Guo, Wenyuan Zhu, Huining Xiao, Junlong Song
Summary: CBM is of great interest for its potential applications in fiber processing and paper industry, as it can utilize insoluble polysaccharides for substrate recognition.
Article
Acoustics
Weiwei Shao, Xiao Han, Peiyang Li, Zhangjian Li, Jiabing Lv, Xinle Zhu, Xiangxin Li, Jun Shen, Yaoyao Cui
Summary: The study introduces a method of generating dual frequency ultrasonic waves by combining contour mode with normal thickness mode in a single element transducer, and designs and analyzes the dual frequency transducer using finite element analysis. Experimental results demonstrate that the proposed contour vibration mode can work with thickness vibration mode to achieve dual frequency with high performance.
Article
Computer Science, Information Systems
Rui Wang, Yinan Li, Chuan Sun, Song Hu, Xiaodong Li, Wu Chen, Gang Lv
Summary: This study proposes and implements a half-dual bridge resonant converter (H-DBRC) with voltage match modulation (VMM) to overcome the weakness of the narrow conversion gain of the dual bridge resonant converter. The synergistic effect between the H-DBRC structure and VMM strategy allows for maximized zero-voltage switching operation and minimized circulating current. The theoretical analysis is confirmed through simulation and experimental verifications.
Article
Engineering, Geological
Chao Liu, Dung T. Phan, Younane N. Abousleiman
Summary: Microseismic monitoring has shown the nonuniformity and asymmetry of hydraulic fractures resulting from multi-stage hydraulic fracturing operations. This paper presents semi-analytical solutions for wellbore and pseudo-pressure in multi-fractured horizontal wells, considering bounded and naturally fractured rock formations. Comparison analysis demonstrates the importance of nonuniformity and asymmetry over spacing in rate transient analysis.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Ming-Shui Yao, Ken-ichi Otake, Jiajia Zheng, Masahiko Tsujimoto, Yi-Fan Gu, Lu Zheng, Ping Wang, Shivanna Mohana, Mickaele Bonneau, Tomoyuki Koganezawa, Tetsuo Honma, Hirotaka Ashitani, Shogo Kawaguchi, Yoshiki Kubota, Susumu Kitagawa
Summary: A method of integrating the soft porosity and electrical properties of metal-organic frameworks (MOFs) into a single material is achieved through the design of conductive-on-insulating MOF (cMOF-on-iMOF) heterostructures. The cMOF-on-iMOF heterostructures exhibit enhanced selective sorption of CO2 and flexibility in sensing and electrical shape memory. These properties are attributed to the porous interface formed by the hybridization of both frameworks at the molecular level, as observed through operando synchrotron grazing incidence wide-angle X-ray scattering measurements.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Geosciences, Multidisciplinary
Miller Zambrano, Tiziano Volatili, Lucia Mancini, Alan Pitts, Maurizio Giorgioni, Emanuele Tondi
Summary: This study evaluates the contribution of macrofractures to porosity and permeability in porous carbonates at the microscale through the establishment of DP/P models. The results demonstrate varying degrees of control exerted by macrofractures on fluid transport in different lithofacies.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Optics
X. I. A. O. M. E. N. G. Liu, Joshua d. Rego, Suren Jayasuriya, Sanjeev j. Koppal
Summary: This research proposes a novel hardware setup that combines a flying-spot MEMS modulated projector with an event camera to achieve dual photography for 3D scanning in both line-of-sight and non-line-of-sight scenes with a transparent object. Depth extraction from line-of-sight scenes and 3D reconstruction of the object in a non-line-of-sight scene using event light transport are achieved.
Article
Computer Science, Interdisciplinary Applications
Jie Hu, Han Ke, Yun Min Chen, Xiao Bing Xu, Hui Xu
Summary: Horizontal wells are increasingly being used for dewatering at municipal solid waste landfills, and a dual-porosity model has been developed to better evaluate their performance. This model divides waste into fracture and matrix domains, with leachate flowing horizontally and vertically into the well. Sensitivity analysis showed the model's key parameters affect leachate level drawdown, and the dual-porosity model outperformed the single-porosity model in estimation accuracy.
COMPUTERS AND GEOTECHNICS
(2021)
