Article
Engineering, Civil
Yaping Tan, Zhengxiang Huang, Qiangqiang Xiao, Xudong Zu, Mengwen Xu
Summary: This research analyzed the interaction between shaped charge jets and inclined armor, and proposed a theoretical model to predict oblique penetration craters. Experimental and numerical simulation results confirmed the applicability of the model under small inclination angles.
THIN-WALLED STRUCTURES
(2022)
Article
Construction & Building Technology
Xiaowei Cheng, Xiaodong Ji, Ziguo Xu, Sheng Gao, Longhe Xu
Summary: Bonded prestressed concrete walls are recommended to reduce the adverse effects of axial tensile force on reinforced concrete walls in high-rise buildings. This study tested three PC short-leg walls and found that failure modes varied with loading patterns. Variable axial forces decreased the strength and ultimate ratio of the walls, as well as affected their stiffness and accumulated energy.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Applied
Jose Antonio Cabello Mendez, Jose de Jesus Perez Bueno, Yunny Meas Vong, Jose Trinidad Perez Quiroz, Abraham Lopez Miguel
Summary: This work demonstrates the achievement of depositing graphene oxide coatings using the plasma jet technique. By adjusting the process parameters, homogeneous and adherent coatings can be obtained on various surfaces. This achievement opens up the possibility of utilizing the characteristics of graphene oxide for industrial surfaces, benefiting society.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Environmental Sciences
Izaz Ali Shah, Sharafat Ali, Zhe Yang, Ihsanullah Ihsanullah, Haiou Huang
Summary: Thin-film composite nanofiltration and reverse osmosis membranes are effective in removing pharmaceutically active compounds from water. The presence of organic fouling and co-existing ions significantly affect the rejection of these compounds.
Article
Mathematics, Applied
Federico Franceschini, Joaquim Serra
Summary: For the thin obstacle problem in Rn, we prove that except for a (n-3)(n-3)-dimensional set, the solution at all free boundary points differs from its blow-up by higher order corrections. This expansion leads to a C1,1-type free boundary regularity result, up to a codimension 3 set.
COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS
(2023)
Article
Engineering, Aerospace
Zhen Zhang, Chao Yan, Da-Ke Kang, Zhen-Hua Jiang
Summary: A numerical study investigates the mechanism and parameters of reverse jet in heat reduction of type IV shock/shock interactions. The results show that a reverse jet can significantly decrease the peak heat transfer rates.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Qiuling Yang, Changhong Deng, Xiqiang Chang
Summary: In this paper, a wind speed prediction method based on data decomposition of improved singular spectrum analysis (ISSA) is proposed. The ISSA is used to decompose the wind speed sequence and remove noise components using singular entropy. The experimental results show that the proposed method can effectively improve the prediction accuracy.
Article
History & Philosophy Of Science
Christine Tiefensee
Summary: One major insight from the moral twin earth debate is that evaluative and descriptive terms have different levels of semantic stability. This paper combines debates about semantic stability and the distinction between thin and thick evaluative terms, presenting a new seamless inferentialist account that can account for their varying levels of semantic stability. According to this position of 'seamless metaconceptualism', thin and thick evaluative terms do not belong to different categories, but are both understood as metaconceptual devices which do not differ in kind, but in scope.
Article
Engineering, Aerospace
N. N. Smirnov, V. F. Nikitin, L. I. Stamova, V. V. Tyurenkova, M. N. Smirnova
Summary: This paper presents the investigation on the interaction between high velocity space debris and thin metallic shields, which poses a significant safety issue for space flights in low Earth orbits. Formulas for determining the critical thickness of the target to prevent penetration, which depend on the mass, speed, and material properties of both the impactor and target, have been developed. The developed simplified models have been supported by the results of physical and numerical experiments.
Article
Engineering, Manufacturing
X. Sourd, R. Zitoune, L. Crouzeix, M. Coulaud, D. Lamouche
Summary: The study investigated the effect of abrasive water jet on 3D woven CFRP composite, finding that an increase in crater volume leads to degradation in mechanical performance of specimens. However, for surface preparation purposes, it did not significantly damage the materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Mechanical
Ruslan Melentiev, Fengzhou Fang
Summary: This study investigates the mechanism for brittle material removal via solid particle impact and identifies an overestimation issue in the existing analytical formulation. By prescribing a realistic shape and mechanical properties to the impinging particle, the research proposes new geometries for the particle's impacting tip to achieve accurate prediction of erosion. The results suggest that implementing the actual particle penetration depth can improve the accuracy of predicting erosion in glass.
Article
Astronomy & Astrophysics
Jose L. Paulino, Francisco A. Brito
Summary: In this paper, we model four-dimensional junctions by intersecting co-dimension one branes living in higher-dimensional spacetimes through domain walls. We investigate the localization of fermion states on the brane junctions formed by intersecting one thick brane with sufficiently thin ones. The branes intersect orthogonally to form a four-dimensional junction embedded in a higher-dimensional bulk. We analyze the effects of Yukawa coupling and proton decay on the stability of the junctions and the thickness of the branes, which also determine the bulk cosmological constant.
Article
Chemistry, Multidisciplinary
Lihong Li, Xiaoxia Yu, Zhaoyang Lin, Zhenren Cai, Yawei Cao, Wei Kong, Zhongyuan Xiang, Zhengkun Gu, Xianran Xing, Xiangfeng Duan, Yanlin Song
Summary: This research demonstrates a facile and scalable printing strategy for 2D semiconductors, utilizing the interface capture effect and hyperdispersed 2D nanosheet ink to fabricate high-quality and atomic-thick semiconductor thin-film arrays. This method enables the production of high-performance and stable thin-film transistors using various 2D materials.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jefferson Dixon, Feng Pan, Parivash Moradifar, Priyanuj Bordoloi, Sahil Dagli, Jennifer Dionne
Summary: When light interacts with matter, it produces color through scattering and absorption. The symmetry of matter can be examined through the polarization of light, especially circularly-polarized light. Recent advances in controlling circularly-polarized light have shown that judicious control of longitudinal symmetry is a key factor. This can be applied in various fields such as optical communication, quantum emitters control, and detection of small molecule asymmetry.
Article
Astronomy & Astrophysics
Tanmoy Laskar, Alicia Rouco Escorial, Genevieve Schroeder, Wen-fai Fong, Edo Berger, Peter Veres, Shivani Bhandari, Jillian Rastinejad, Charles D. Kilpatrick, Aaron Tohuvavohu, Raffaella Margutti, Kate D. Alexander, James DeLaunay, Jamie A. Kennea, Anya Nugent, K. Paterson, Peter K. G. Williams
Summary: We report the discovery of the first millimeter afterglow of a short-duration gamma-ray burst (SGRB) and confirm its localization using the GUANO system on Swift. The ALMA detection of SGRB 211106A reveals its origin in a faint host galaxy with high extinction along the line of sight. The millimeter light curve captures the synchrotron peak and reveals a jet break at 29.2 days. We find that energetic outflows in high-density environments are more likely to have detectable millimeter counterparts.
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Mechanics
Sharey Deep Guleria, Dhiraj V. Patil
Article
Mechanics
Sharey Deep Guleria, Atul Dhar, Dhiraj V. Patil
Summary: This article presents experimental insights into the physics of water entry of hydrophobic spheres. Various parameters and dynamics of the trapped air-cavity are studied, including cavity formation, retraction, and Worthington-jet analysis. Different cavity shapes exhibit unique radial dynamics and surface energy characteristics, with specific behaviors such as bubble shedding observed for shallow seal conditions.
Article
Engineering, Chemical
Qing Han, Mengqing Shi, Linkai Han, Di Liu, Mingwei Tong, Yuxin Xie, Zhonghua Xiang
Summary: Developing highly efficient bifunctional oxygen electrocatalysts is crucial for zinc-air flow batteries. Metal-organic frameworks (MOFs) and covalent organic polymers (COPs) have emerged as promising alternatives due to their designable and controllable atomic-level structures. However, their catalytic performances are limited by conductivity and catalytic activity. In this study, nanosheet FeNi-MOF and iron phthalocyanine rich COP hybrid materials are assembled through the pi-pi stacking effect to create highly efficient bifunctional electrocatalysts. The resulting catalyst exhibits superior catalytic performance and stability, making it a promising candidate for zinc-air flow batteries.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Daria Grigorash, Dmytro Mihrin, Rene Wugt Larsen, Erling H. Stenby, Wei Yan
Summary: The article introduces a new approach to describe the cross-association between molecules, allowing for the simulation of weakly bound molecular complexes with different conformations in mixtures. By incorporating this approach into the equation of state, accurate predictions of vapor-liquid equilibrium and liquid-liquid equilibrium can be made. The new method is validated through experiments on alcohol and acid mixtures, with the results compared to experimental data, demonstrating its accuracy and reliability.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Mohammed Al-Sharabi, Daniel Markl, Vincenzino Vivacqua, Prince Bawuah, Natalie Maclean, Andrew P. E. York, Axel Zeitler
Summary: This study used terahertz pulsed imaging to investigate the transport process of different solvents into ceramic catalytic materials. The results showed that the heating rate of the samples influenced the water transport rate, while the viscosity of 1-octanol slowed down its transport.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chukwunonso Anyaoku, Sati Bhattacharya, Rajarathinam Parthasarathy
Summary: This study aimed to enhance understanding of settling dynamics in viscoelastic fluids by developing a semi-empirical correlation and a dimensionless ratio, which accurately described the characteristics of settling suspensions.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Antti I. Koponen, Janika Viitala, Atsushi Tanaka, Baranivignesh Prakash, Olli-Ville Laukkanen, Ari Jasberg
Summary: This study focuses on the development of foam application chemicals for the paper and board industry. The research explores the rheology of the polyvinyl alcohol foam used in the process. Measurements were conducted to determine the foam viscosity and slip flow. The results suggest that slip flow contributes significantly to the total flow rate, and the obtained viscosity and slip models provide a solid foundation for industrial processes.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Dalei Sun, Jinghui Cai, Yating Yang, Zhiwu Liang
Summary: In this study, Fe-doped alpha-Bi2O3 catalysts with different Fe/Bi molar ratios were synthesized and utilized in the carbonylation of isobutyl amine with CO2. The results showed that Fe doping significantly enhanced the catalytic abilities of alpha-Bi2O3.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Yuan Tian, Xinxin Wang, Yanrong Liu, Wenping Hu
Summary: This paper predicts the solubility of nitrogen gas in ionic liquids (ILs) using two quantitative structure-property relationship (QSPR) models. By combining machine learning methods and ionic fragments contribution method, the accuracy and reliability of the prediction models are improved.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Liwang Wang, Wei Liu, Pan Yang, Yulong Chang, Xiaoxu Duan, Lingyu Xiao, Yaoming Hu, Jiwei Wu, Liang Ma, Hualin Wang
Summary: This study investigates the effective phase interfacial area (ae) of hydro-jet cyclones at different injection angles. The results show that a 45 degrees upward incidence angle yields the most favorable flow field characteristics for efficient mass transfer. The significant enhancement in ae of the hydro-jet cyclones offers the advantage of reducing equipment volume and cost savings.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Chuanjun Wu, Jiangzhi Chen, Jiyue Sun, I-Ming Chou, Shenghua Mei, Juezhi Lin, Lei Jiang
Summary: In this study, the solubility of H2S hydrate in water was measured using Raman spectroscopy. The results showed that the solubility increases with temperature under certain equilibrium conditions, and the solubility also depends on pressure and temperature under different equilibrium conditions. A thermodynamic model based on the van der Waals-Platteeuw theory was developed to predict the solubility, demonstrating its accuracy.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Lorenzo Brivio, Serena Meini, Mattia Sponchioni, Davide Moscatelli
Summary: This study investigates the influence of three main parameters and proposes a kinetic model to predict the optimal operating conditions for high yield of dimethyl terephthalate (DMT) in the chemical recycling process of polyethylene terephthalate (PET).
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Hongju Lin, Fanhui Liao, Yanchang Chu, Mingyu Xie, Lun Pan, Yuanyuan Wang, Lijian Leng, Donghai Xu, Le Yang, Gangfeng Ouyang
Summary: A honeycomb NiCo/C-Na catalyst with a micro-meso-macroporous structure has been fabricated and shown to have significantly higher catalytic activity for the decarboxylation of fatty acids. It also proves to be efficient in upgrading sludge HTL bio-crude, resulting in a biofuel with decreased viscosity and increased density.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Xiaoxian Li, Rui Li, Min Lin, Mingde Yang, Yulong Wu
Summary: A series of coated non-noble metal porous carbon catalysts were synthesized and applied to the aqueous-phase deoxygenation of algal bio-oil. One of the catalysts showed excellent deoxygenation selectivity and catalytic activity at 250 degrees C. The catalyst exhibited good hydrothermal stability and the reaction mechanism was proposed based on product analysis and active site analysis.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
M. V. Chudakova, M. V. Popov, P. A. Korovchenko, E. O. Pentsak, A. R. Latypova, P. B. Kurmashov, A. A. Pimenov, E. A. Tsilimbaeva, I. S. Levin, A. G. Bannov, A. V. Kleymenov
Summary: A series of catalysts with different potassium contents were prepared using solution combustion synthesis and characterized using various techniques. The results showed that the potassium content affected the phase composition and texture of the catalysts. The addition of a small amount of potassium resulted in a change in particle size distribution, leading to higher hydrogen yield. The Ni-1%K2O/Al2O3 catalyst exhibited the highest hydrogen yield at temperatures of 675 and 750 degrees Celsius.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Aliakbar Roosta, Nima Rezaei
Summary: In this study, we modified the electrolyte cubic plus association equation of state (e-CPA EoS) and integrated it with two electrical conductivity models to estimate the electrical conductivity of 11 monovalent electrolyte solutions in water. The modified e-CPA model demonstrated better performance and the hybridization with electrical conductivity models resulted in two predictive models for estimating the electrical conduction of dilute and concentrated electrolyte solutions. These predictive models showed relative average percentage deviations (AARD) of 11.15% and 13.87% over wide ranges of temperature and electrolyte concentration.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Engineering, Chemical
Haoren Niu, Jianzheng Wang, Qingzhu Jia, Qiang Wang, Jin Zhao, Fangyou Yan
Summary: A study developed two quantitative structure-property relationship models for the complexation performance of alpha- and beta-cyclodextrins and validated their stability and predictive ability through internal and external validation. The models showed robustness and satisfactory performance, as demonstrated by the experimental results and model validations. These models can effectively predict the binding constants between cyclodextrins and various types of molecules, providing valuable tools for cyclodextrin design.
CHEMICAL ENGINEERING SCIENCE
(2024)