Article
Chemistry, Analytical
Lukas Bathelt, Maximilian Scurk, Eugen Djakow, Christian Henke, Ansgar Traechtler, Wai Lun Lo
Summary: This paper presents a novel design for a straightening machine with an integrated, precise straightening force measurement. By monitoring the position of the straightening rollers, state variables of the straightening operation can be derived; a tension control is introduced to mitigate the disturbing effects caused by irregularities in the wire-feeding process.
Article
Chemistry, Multidisciplinary
Vicente Faus-Matoses, Vicente Faus-Llacer, Celia Ruiz-Sanchez, Sofia Prats Gallego, Alvaro Zubizarreta-Macho, Beatriz Solano-Mendoza, Benjamin Martin Biedma, Ignacio Faus-Matoses
Summary: The objective of this study was to measure and compare the impact of the length of CM Gold Wire and CM Blue Wire NiTi alloy endodontic rotary files on their resistance to cyclic fatigue. The results showed significant differences among different length groups, with file length being inversely proportional to cyclic fatigue resistance.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Chemical
Christopher Wagstaff, Sreenivasa Rao Gubba, Tadd Truscott, Khalid Algashgari, William L. Roberts
Summary: Arrays of vertical parallel wires ('wetted wires') can be an effective alternative to traditional industrial columns, but more research is needed to optimize their performance and compete against packed columns. This study investigates the maximum wire density for wetted-wire columns using the minimum pitch, and the results show that the pitch can be much smaller than previously recommended. An analytical model is used to compare the pressure drop characteristics of wetted-wire columns with existing packings, revealing that wetted-wire columns have significantly lower pressure drops. However, the packing factors used for packed columns do not adequately describe the fluid dynamics of wetted-wire columns.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Emi Ito, Shinjiro Takano, Toshikazu Nakamura, Tatsuya Tsukuda
Summary: Targeted syntheses of MM ' Au-36(PET)(24) were achieved through hydride-mediated fusion reactions, resulting in bi-icosahedral MM ' Au-21 cores composed of M@Au-12 and M '@Au-12 superatoms. Counterintuitive results were explained by a bent bonding model based on tilted bonding interaction between the superatomic orbitals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Anatomy & Morphology
Walid Nehme, Stephanie Araji, Jerome Michetti, Carla Zogheib, Alfred Naaman, Issam Khalil, Raphael Pages, Adrian Basarab, Jean Philippe Mallet, Franck Diemer
Summary: The study compared the shaping abilities of Protaper Gold (PTG) and 2Shape (TS) using a new automatic process and micro-CT. There was no statistical difference in endodontic volume and procedural errors between PTG and TS. The TS system provided a shorter preparation time compared to PTG files.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Chemistry, Physical
Jiajia Han, Yongjin Lin, Yuanyuan Yang, Daxian Zuo, Cuiping Wang, Xingjun Liu
Summary: This study used first-principles calculations to investigate the properties of NaxMFe(CN)(6) compounds as cathode materials for sodium-ion batteries, revealing a strong correlation between the M element and the intrinsic characteristics of the material. The thermodynamic mechanism of physical properties related to sodium-ion concentration was also elucidated, providing insights for developing sodium-ion cathode materials with complex heterostructures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Industrial
Woo-Jae Seong, Suck-Joo Na
Summary: The study presents a systematic approach for heat straightening of welding-induced distortion, using a new algorithm that divides and optimally arranges the measured surface, resulting in a reduced number of heating spots with higher efficiency using plastic shrinkage.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Shuai Yang, Yuning Wu, Fangyu Yue, Ruijuan Qi, Bin Jiang, Jiahao Wu, Yang Shen, Chungang Duan, Yongkui Shan, Qingbiao Zhao, Yuefei Zhang
Summary: By optimizing the Debye temperature, two highly efficient phosphors based on S-P transition of Bi3+ were identified, with quantum yields reaching 96% and 99%. One of them exhibited negative thermal quenching. These blue phosphors with near-perfect quantum efficiencies and superior thermal stability can be competitive candidates for practical applications.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Green & Sustainable Science & Technology
Shan Zhou, Tiesong Hu, Rui Zhu, Jiesheng Huang, Laiyin Shen
Summary: A proposed canal scheduling model, focusing on the ultimate objectives of the irrigation system, aims to optimize water delivery schedule by simulating soil water and salt migration, providing suitable soil moisture content and salinity for crops. Compared to traditional models, the new model shows superior performance in irrigation efficiency and lower risk of canal overload, attributed to its adaptability to spatial diversity of soil properties and temporal variability in agrometeorological conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
Jiannan Yang, Yunqiang Ni, Hui Li, Xuewei Fang, Bingheng Lu
Summary: In this study, the effect of heat-treatment parameters on the mechanical properties of aluminum alloy components was optimized using the Taguchi method. The results showed that the solution temperature had the most influential effect on ultimate tensile strength and yielding strength, while aging time had the most significant effect on elongation. After optimized T6 heat treatment, microhardness and strength properties were greatly improved. The strengthening mechanism of this additively fabricated aluminum alloy was investigated through microstructural analysis.
Article
Chemistry, Multidisciplinary
Myungwoo Choi, Jinwook Baek, Huije Ryu, Hyejeong Lee, Jicheol Byen, Seong-Gu Hong, Bum Jun Kim, Sooheon Cho, Jae Yong Song, Gwan-Hyoung Lee, Hosun Shin, Jae-Young Choi, Seokwoo Jeon
Summary: Efforts have been made to grow single-crystal graphene in recent years, but issues such as nanoscale defects control and substrate-dependent nonuniformity remain unresolved. This study demonstrates a possible route to grow single-crystal graphene by combining aligned nucleation and sequential heat treatment. The resulting single-crystallike graphene exhibits high thermal conductivity and carrier mobility.
Article
Nanoscience & Nanotechnology
M. Shamsujjoha, J. Licavoli, B. Lin, E. Harma, R. Patterson, T. Timmermann, M. Groeneveld, L. McLeod, P. Sanders
Summary: Wire + arc additive manufacturing (WAAM) technology was used to produce high-strength steel components with a microstructure consisting of martensite, retained austenite, and different morphological phases of ferrite. Spatial microstructural heterogeneity was observed due to thermal cycling and chemical segregation, with the highest hardness value found in martensite, followed by acicular ferrite and then quasi-polygonal ferrite. Tempering resulted in carbide precipitation in martensite phases, leading to a decrease in hardness, while both quench hardening and quenching and partitioning (Q&P) treatments homogenized the microstructures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Dentistry, Oral Surgery & Medicine
Xiao-Mei Hou, Yin-Jie Yang, Jun Qian
Summary: In this study, phase transformation behaviors and mechanical properties of NiTi rotary files after gold heat and blue heat treatments were compared. It was found that WaveOne Gold and Reciproc Blue exhibited significantly higher bending properties and cyclic fatigue resistances.
JOURNAL OF ORAL SCIENCE
(2021)
Article
Engineering, Manufacturing
Kun Li, Michael A. Klecka, Shuying Chen, Wei Xiong
Summary: The study demonstrates the WAAM process of Grade 91 steel for the first time, optimizing the post-heat treatment process for improved properties. The findings show that the optimized WAAM P91 steel exhibits significantly higher mechanical properties compared to traditional wrought P91 steel.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Lin Wang, Chen Shen, Yuelong Zhang, Fang Li, Yuhan Ding, Wenlu Zhou, Jianwen Xin, Baosen Wang, Xueming Hua
Summary: Heat treatment can effectively eliminate the heterogeneity and anisotropy of TiAl alloy fabricated using the TW-DED-arc process, resulting in a more homogeneous microstructure and improved mechanical properties.
MATERIALS CHARACTERIZATION
(2022)