Article
Chemistry, Physical
Tiantian Zhang, Liangqun Zhao, Haikun Ma, Shuzhao Huang, Li You, Yong Zhang, Zhanbing He
Summary: In this study, complex domains of approximants of high-entropy decagonal quasicrystal (HE-DQC) in Al20Si20Mn20Fe20Ga20 alloy were investigated using spherical aberration-corrected scanning transmission electron microscopy. A phase transition from HE-DQC to an orthorhombic approximant was revealed, shedding light on the formation of periodic structures in high-entropy quasicrystals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Haikun Ma, Liangqun Zhao, Zhi-Yi Hu, Dinghao Miao, Ruixuan Li, Tulai Sun, He Tian, Tiantian Zhang, Hua Li, Yong Zhang, Zhanbing He
Summary: This study reports a quinary decagonal quasicrystal with near-equiatomic alloying elements and characterizes its structural features, satisfying the criteria for high-entropy alloys.
SCIENCE CHINA-MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Tiantian Zhang, Liangqun Zhao, Haikun Ma, Shuzhao Huang, Ningning Shen, Xidong Hui, Zhanbing He
Summary: This article reports the preparation of oriented microtube arrays of high-entropy decagonal quasicrystal approximants in Al20Si20Mn20Fe20Ga20 alloy using simple melt spinning. The microtubes are mainly composed of alternating arrangements of (1/0, 2/1) quasicrystal approximant domains and defective (1/0, 2/1) domains. Heat treatment leads to structural and morphological changes in the microtubes. Nanoindentation testing shows that the hardness and elastic modulus of the microtubes are significantly affected by heat treatment.
MATERIALS & DESIGN
(2023)
Article
Construction & Building Technology
Jun'an Lei, Nanxiang Zheng, Xiaobao Chen, Jiefu Bi, Xirong Wu
Summary: The micro-texture of the aggregate plays a crucial role in the anti-skid performance of asphalt pavement. Sandstone exhibits the best anti-skid performance, followed by magmatic rock and limestone.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Microscopy
Hiromasa Goto, Kyoka Komaba, Reiji Kumai
Summary: Ground beetle Carabus insulicola exoskeleton was studied using polarizing optical microscopy, revealing iridescence and a Maltese cross array. The middle layer matrix is made of protein with a cholesteric liquid crystal-like helical structure. Scanning electron microscopy and synchrotron X-ray diffraction further confirmed the complex microstructure and crystallinity of the beetle exoskeleton. Similarity was found between the morphology of the beetle's Maltese cross array and synthetic chiral CLC.
Article
Environmental Sciences
G. Senthilkumar, S. Lakshmi Sankar
Summary: This article improves the quality of domestic wastewater using micro-nanobubbles technology (MNB) in an experimental study. The effect of MNBs on water quality was analyzed through various characteristic studies, and their existence was verified through water quality tests. This article raises awareness of MNBs technology and enhances knowledge in domestic wastewater treatment.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Construction & Building Technology
Ali Raza, Yasser Alashker, Marc Azab, Qaiser Uz Zaman Khan, Mirvat Abdallah, Osama Barakat, Khaled Mohamed Elhadi
Summary: Geopolymers play a vital role in sustainable concrete construction. The addition of nanoparticles and micro-fibers can improve the mechanical and microstructural performance of geopolymers. This study investigates the effects of micro-basalt fiber-reinforced coal ash-made geopolymers with different proportions of nano-sodium oxide on their microstructural, mechanical, fracture, and toughness performance.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Anatomy & Morphology
Shuai Kang, Li-xing Nie, Yu-guang Zheng, Tian-tian Zuo, Ying Wang, Jia Shi, Shuang-Cheng Ma
Summary: This study successfully distinguished Cordyceps sinensis from its adulterants using a convenient, quick, and environmentally friendly method, combining microscopic observations and comparisons with entomological literature.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Chemistry, Multidisciplinary
Huaying Lin, Shixiang Tian, Anjun Jiao, Zuoyong Cao, Kai Song, Yihuai Zou
Summary: Understanding the pore heterogeneity of tectonic coal and primary-structure coal is crucial for predicting and preventing tectonic coal. Experimental results show that tectonic coal has higher aliphatic functional groups and hydrogen content than aromatic structural groups, with a wider pore size distribution and higher specific surface area.
Article
Polymer Science
Rene Daher, Ivo Krejci, Enrico di Bella, Laurine Marger
Summary: The study evaluated the use of digital optical microscopy (DOM) for analyzing marginal adaptation of dental adhesive interfaces, comparing it with scanning electron microscopy (SEM). The results showed no statistically significant difference between DOM and SEM analysis, and DOM analysis took less time.
Article
Anatomy & Morphology
Yu-Jing Zhang, Dong-Yu Chen, Xue-Ting Chao, Zi-Shu Dong, Zong-You Huang, Xia-Lin Zheng, Wen Lu
Summary: This study investigated the antennal sensilla of Copidosomopsis nacoleiae through scanning and transmission electron microscopy. Six types of sensilla were identified on the antennae, with different distribution patterns and potential functions discussed. Future research on host location mechanisms will build upon these observations.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Chemistry, Multidisciplinary
Jose M. Sojo-Gordillo, Gerard Gadea-Diez, David Renahy, Marc Salleras, Carolina Duque-Sierra, Pascal Vincent, Luis Fonseca, Pierre-Olivier Chapuis, Alex Morata, Severine Gomes, Albert Tarancon
Summary: A combined scanning thermal microscope and scanning electron microscope was used to characterize a suspended silicon nanowire. The thermal and mechanical properties were measured simultaneously, and the effects of the rough surface on heat dissipation and stiffness were studied.
Article
Engineering, Geological
Weitao Liu, Lifu Pang, Qiang Wu, Shouqiang Liu, Jianjun Shen
Summary: The combined action of mining disturbance and floor-bearing water pressure causes damage and expansion of primary meso-cracks in the coal seam floor. The strength of the rock is reduced, resulting in the development of meso-cracks and the formation of macroscopic fissures. The study demonstrates that the water pressure of the floor affects the depth and range of floor damage.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Construction & Building Technology
Shengang Li, Chaozhe Zhang, Tianbiao Zhang, Wentao Li, Pengjiao Jia
Summary: The study found that cement improved the strength of saline soil, while micro-silica helped increase its frost-thaw cycle durability. Saline soil treated with a cement-micro-silica (CMS) binder showed the best performance, with higher compressive strength and lower collapsibility coefficient.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Review
Physics, Multidisciplinary
Xue Gong, Ruijie Qian, Huanyi Xue, Weikang Lu, Zhenghua An
Summary: Probing and managing thermoelectricity at the nanoscale is fundamentally important for solving heat dissipation problems in modern integrated electronics. This paper introduces the application of scanning thermal microscopy (SThM) and reviews recent experiments investigating thermoelectricity in nanomaterial systems. The paper also provides a perspective on the promising application of the Scanning Noise Microscope (SNoiM) for directly probing non-equilibrium transporting hot charges in thermoelectric devices.
FRONTIERS OF PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Meysam Amini, Mohammad Reza Rahimipour, Seyed Ali Tayebifard, Yahya Palizdar
MATERIALS RESEARCH EXPRESS
(2020)
Article
Engineering, Chemical
Meysam Amini, Mohammad Reza Rahimipour, Seyed Ali Tayebifard, Yahya Palizdar
ADVANCED POWDER TECHNOLOGY
(2020)
Article
Multidisciplinary Sciences
Meysam Amini, Mohammad Reza Rahimipour, Seyed Ali Tayebifard, Yahya Palizdar
Summary: Quasicrystals have been extensively studied since their discovery in 1984, being a novel type of solids with well-ordered atomic structures different from crystalline or amorphous materials. The unique properties of quasicrystalline alloys, such as high strength, hardness, and low thermal conductivity, have led to consideration for various applications.
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.