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SSrN 2023年

作者： Yang, Ping Wang, Xumei Wang, Hui Hu, Yueming Wen, Pingwei Tu, Zongcai State Key Laboratory of Food Science and Technology Nanchang University Jiangxi Nanchang330047 China National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province Jiangxi Normal University Nanchang330022 China

Ara h2 is one of the major allergens in peanuts. The mechanism of the effect of reducing saccharide chain length and isomers on the allergenicity of Ara h2 after glycation was investigated. The glycation degree of Ara h2 was related to the reducing saccharide chain length and isomers. ribose with short chain length lead to14 glycation sites, and 12 sites occurred in arginine. Glycation sites in Ara h2-galactose, Ara h2-glucose, and Ara h2-fructose conjugates were 9, 7, and 7, indicating that galactose was more prone to glycation than its isomers. Ara h2-ribose conjugate had the lowest allergenicity, and galactose was more capable of reducing Ara h2 allergenicity than its isomers. The reason might be that Ara h2-ribose had more glycation sites on its epitopes, thus masking these epitopes and reducing the allergenicity. This study will provide the theoretical basis for selecting appropriate reducing saccharides and preparing hypoallergenic products containing peanuts. © 2023, The Authors. All rights reserved.

关键词： Isomers

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Quasi-Periodic replacement Policy for a Two-Unit Production System

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Journal of Shanghai Jiaotong university(Science) 2020年第3期25卷 398-406页

作者： GAO Wenke WANG Yu YANG Tianshu JI Hong CHEN Yin College of Energy and Power Engineering Lanzhou University of TechnologyLanzhou 730050China Technical Center R&D DepartmentYEAL Electric Co.Ltd.Changchun 130113China

Maintenance optimization of periodic replacement for mono-unit production system is a widely discussed *** practice,the replacement for a parallel production system with multi-unit served by one repairman is *** replacement action is often implemented in a maintenance window at random,although the replacement period appears as a quasi-periodic *** optimize these maintenance policies,this study analyzes a bivariate quasi-periodic replacement policy (T,W) for a two-unit parallel production system with a maintenance window and one *** unit of the system is replaced when either a failure occurs or a replacement plan comes in the maintenance window,whichever comes *** one of the two units is in the replacement,the other may continue operating or waiting until the replacement is *** optimal replacement window [T*,T* + W*] can be obtained by jointly considering the system's long-running cost rate and the availability using the genetic *** study also introduces three examples of the production system with different types of units to illustrate the proposed policy.

关键词： quasi-periodic replacement policy maintenance window two-unit production system one repairman

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Intelligent Wireless Self-Sustained Sensing Cubic Node Toward AIOT ready Smart City

Intelligent Wireless Self-Sustained Sensing Cubic Node Towar...

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Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)

作者： Manjuan Huang Tingting Zhao Guoqing Jin Xiaojing Mu Huicong Liu Jiangsu Provincial Key Laboratory of Advanced Robotics School of Mechanical and Electrical Engineering Soochow University Suzhou CHINA Key Laboratory of Optoelectronic Technology & Systems Ministry of Education International R&D Center of Micro-nano Systems and New Materials Technology Chongqing University Chongqing CHINA

This paper presents an intelligent wireless self-sustained sensing cubic node, consisting of a rotational electromagnetic generator (r-EMG) for power supply and a versatile triaxial piezoelectric sensor (TPS) composed of three piezoelectric beams. This system enhances internet of things (IoT) sensing through cloud-based artificial intelligence (AI) computing. The cubic node provides power generation and multi-functional sensing capabilities, including vibration acceleration, frequency, and tilting angle. The design of the r-EMG ensures stable output at different rotational speeds, reaching a maximum output power of 66 mW at 550 rpm with an external load of 1.1 kΩ, allowing for self-sustaining energy generation for the node. Additionally, the cubic design enables the orthogonal placement of the three piezoelectric beams, enabling a broad response to vibrational energy from various directions. This flexibility allows for diverse applications across different frequencies and scenarios.

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A Novel Clover-Like Cofs Membrane Fabricated Via One-Step Interfacial Polymerization for dye/Salt Separation

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SSrN 2022年

作者： Fang, Yin-Xin Lin, Yu-Fei Xu, Zhen-Liang Mo, Jia-Wei Li, Ping-Ping State Key Laboratory of Chemical Engineering Membrane Science and Engineering R&D Lab Chemical Engineering Research Center School of Chemical Engineering East China University of Science and Technology 130 Meilong Road Shanghai200237 China

Covalent organic frameworks (COFs) membranes have exhibited great applications in wastewater treatment due to their highly ordered porous architecture. Currently, numerous studies have focused on the hexagonal-structured COFs synthesized with linear C2 and C3 precursor. However, the C2 monomer is limited-variety and high-cost. Herein, a novel clover-like structure COFs membrane is successfully fabricated for the first time. Meta-position monomer m-phenylenediamine (MPd) and 1,3,5-triformylbenzene (TFB) are used to synthesize the clover-like COFs membrane by interfacial polymerization (IP) method on the nylon substrate directly. The optimized MPd-TFB/Nylon membrane shows excellent water permeance of 94.4 L m-2 h-1 bar-1, which is higher than hexagonal-structured COFs membrane, in Congo red (Cr) and NaCl mixed solution The rejections are 98.6% for Cr and 2.9% for NaCl. This work opens a novel route for designing the COFs membrane with clover-like channels, manifesting the usage of linear C2 monomers is unnecessary. Besides, it has been found that the unique clover-like structure can improve the water molecular transport path under the same dye molecules deposition situation compared with hexagonal structure COFs membrane. © 2022, The Authors. All rights reserved.

关键词： Membranes

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Efficient membrane fouling mitigation in self-cleaning piezoelectric PVdF-graphene loose nanofiltration membranes for sustainable textile wastewater treatment

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Separation and Purification technology 2024年 346卷

作者： Austria, Hannah Faye M. Sardome, rachelle P. Setiawan, Owen Huang, Tsung-Han Lei, Wen-Ching Tian, Xin-Yuan Hu, Chien-Chieh Lee, Kueir-rarn Lai, Juin-Yih Tayo, Lemmuel L. Caparanga, Alvin r. Hung, Wei-Song Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan School of Chemical Biological Materials Engineering and Sciences Mapúa University Intramuros Metro Manila Manila1002 Philippines R&D Center for Membrane Technology Department of Chemical Engineering Chung Yuan University Chung-Li32023 Taiwan Department of Biology School of Medicine and Health Sciences Mapúa University Makati1200 Philippines School of Graduate Studies Mapúa University Intramuros Metro Manila Manila1002 Philippines

despite the effectiveness and eco-friendly nature of membrane separation in wastewater treatment, the notable and unavoidable fouling problem in conventional membranes has become a substantial challenge within the field of membrane technology. due to this factor, there is significant potential in alleviating this issue through the creation of responsive membranes capable of self-cleaning. This study introduces the fabrication of loose nanofiltration (LNF) membranes using electro-responsive poly(vinylidene fluoride) (PVdF)/graphene (PVdFGr), which exhibit self-cleaning capabilities when subjected to an external voltage. In this membrane system, varying amounts of graphene triggers the self-assembly of PVdF chains to have a dominant β-phase that is responsible for its distinctive piezoelectric characteristic. Upon subjecting the PVdF1Gr1 membrane with the best piezoelectric property to an AC voltage of 36 V during the foulant filtration test, there was no apparent change in its original permeance value for over 120 min unlike the control membrane that showed a continuously declining value. This proves that the membrane could effectively mitigate fouling through the inverse piezoelectric effect. By responding to an applied voltage, the membrane undergoes a deformation that causes its self-vibration, thereby expelling foulants from the membrane. Moreover, during NF testing, it was found out that this membrane has a Congo red (Cr) rejection of up to 96.4 %, and sodium chloride (NaCl) rejection of 1.6 %. This high dye rejection and high salt transmission indicate that this piezoelectric membrane could be applied for efficient textile wastewater treatment where dyes and salts can be separated from each other, and hence sustainably recover these valuable resources. © 2024 Elsevier B.V.

关键词： Piezoelectricity

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Mitigating Gate Voltage Oscillation in Parallel SiC Power Modules for xEV 14

Mitigating Gate Voltage Oscillation in Parallel SiC Power Mo...

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14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025

作者： Komo, Hideo rogers, Michael Steiner, Mark Motto, Eric Taguchi, Koichi Kawahara, Chihiro Nakashima, Junichi Mukunoki, Yasushige Inokuchi, Seiichiro Yoneyama, rei Mitsubishi Electric US INC. Semiconductor & Device Division ExportPA United States Melco Semiconductor Engineering Corp. Fukuoka Japan Advanced Technology R&d Center Mitsubishi Electric Corpolation Amagasaki Japan Mistubishi Electric Corporation Fukuoka Japan Mitsubishi Electric Corpolation Fukuoka Japan

ISBN: (纸本)9798331516116

Global vehicle electrification is accelerating to combat global warming. recently, Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) are increasingly used in electric vehicle inverters for their low power loss at fast switching speeds compared to conventional Silicon Insulated Gate Bipolar Transistors (IGBTs). Although SiC MOSFETs are usually used in parallel to gain power, these fast-switching speeds can lead to gate voltage oscillations across paralleled SiC chips, potentially leading to failures such as gate drive malfunction and gate oxide breakdown. This paper addresses the oscillation caused by source voltage fluctuations and unbalanced gate drive circuit characteristics. We propose a method to mitigate these issues using a symmetrical module structure which equalizes stray inductance between modules. © 2025 IEEE.

关键词： Silicon carbide

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Advanced sulfonated polyester nanofiltration membranes for superior dye separation, desalination, and chlorine resistance

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Journal of Membrane Science 2024年 706卷

作者： Lingaya, Arjan C. Gallardo, Marwin r. Huang, Shu-Hsien Li, Chi-Lan Caparanga, Alvin r. Lee, Kueir-rarn Department of Chemical and Materials Engineering National Ilan University Yilan26047 Taiwan R&D Center for Membrane Technology and Department of Chemical Engineering Chung Yuan Christian University Taoyuan32023 Taiwan School of Chemical Biological and Materials Engineering and Sciences Mapúa University Manila1002 Philippines School of Graduate Studies Mapúa University Manila1002 Philippines Mapúa Institute for Global Sustainability Mapúa University Manila1002 Philippines

This study introduces an innovative thin-film composite (TFC) nanofiltration membrane made from sulfonated polyvinyl alcohol (SPVA)-based polyester, specifically engineered for effective wastewater treatment. This novel membrane is developed through interfacial polymerization on a polysulfone substrate, demonstrating exceptional water permeability and filtration efficiency. It is particularly effective in separating dyes and salts due to its superior hydrophilicity, optimized surface charge, and precisely tailored morphology. Critical fabrication parameters were finely tuned, utilizing a 2 wt% SPVA solution and a 0.35 wt% trimesoyl chloride (TMC) in the organic phase, with both immersion and polymerization times set at 2 min. The performance metrics are outstanding, featuring a water permeance of 97 L m−2 h−1·bar−1, high dye rejection rates (99.51 % for Congo red and 99.55 % for Brilliant Blue), and significant salt permeability (30.35 % for Na2SO4 and 29.93 % for MgSO4). The membrane also exhibits excellent antifouling properties, robust chlorine resistance (up to 48,000 ppm h), and sustained operational stability, underscoring its industrial viability for dye and textile effluent treatment. The TFC-SPVA membrane addresses critical environmental challenges in wastewater management, marking a significant advancement in membrane technology. © 2024 Elsevier B.V.

关键词： Nanofiltration

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CFd Simulation and Experimental Verification of Protein Adsorption on Ni(Ⅱ) – HFM Module

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SSrN 2022年

作者： Wu, Jiaojie Wei, Yongming Li, Shuqin Zhou, Junjie Xu, Zhenliang State Key Laboratory of Chemical Engineering Membrane Science and Engineering R&D Lab Chemical Engineering Research Center School of Chemical Engineering East China University of Science and Technology 130 Meilong Road Shanghai200237 China

Immobilized metal affinity chromatography (IMAC) provides specific purification of proteins containing histidine tags through high affinity with transition metal chelators, which has various applications in biological protein separation. Most chromatographic separations currently use the fixed bed. In this form, the internal flow has a high pressure drop, uneven solution flow, and pore blockage, etc., which reduces the separation efficiency greatly. Therefore, this study uses hollow fiber membranes (HFM) with micron-scale inner diameters as the base, thus reducing the operating pressure and significantly enhancing the mass transmission. Batch adsorption experiments were performed using flat plate membranes to obtain the thermodynamic and kinetic model parameters of the reaction to use in the dynamic column breakthrough simulation. The numerical simulation was based on a single HFM model and established a mathematical model for computational fluid dynamics (CFd) in ANSYS Fluent. The model accuracy was validated by combining the simulation with experiments. The effects of different module and process parameters on the breakthrough curve was investigated by varying the parameters such as flow rate, initial feed concentration and HFM inner diameter. The design parameters and operating conditions contributing for the module utilization were obtained. © 2022, The Authors. All rights reserved.

关键词： Adsorption

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An investigation of the microstructural effects on the mechanical and electrochemical properties of a friction stir processed equiatomic CrMnFeCoNi high entropy alloy

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Journal of Materials Science & technology 2021年第28期87卷 60-73页

作者： Sam Yaw Anaman Solomon Ansah Hoon-Hwe Cho Min-Gu Jo Jin-Yoo Suh Minjung Kang Jong-Sook Lee Sung-Tae Hong Heung Nam Han Department of Materials Science and Engineering Hanbat National University125 Dongseodae-roYuseong-GuDaejeonRepublic of Korea Center for Energy Materials Research Clean Energy InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea Department of Materials Science and Engineering&Research Institute of Advanced Materials Seoul National University1Gwanak-roGwanak-guSeoul08826Republic of Korea Advanced Functional Technology R&D Department Korea Institute of Industrial TechnologyIncheon21999Republic of Korea School of Materials Science and Engineering Chonnam National UniversityGwangju61186Republic of Korea School of Mechanical Engineering University of UlsanUlsan680-749Republic of Korea

The electrochemical properties of a friction stir processed(FSPed)equiatomic CrMnFeCoNi high-entropy alloy(HEA)was investigated in an aerated 0.5 M Na_(2)SO_(4) electrolyte solution at room *** microstructural analysis reveals a highly refined stir zone(SZ)with an average grain size that decreases from the top region of the SZ to the bottom region of the SZ(also known as shear-processed zone;SPZ).However,the region below the SPZ,(*** the plunge depth)experienced an increase in average grain size and dislocation densities compared to the other *** is no secondary phase observed in the FSPed region,however,the microstructural evolution in the FSPed region affects the electrochemical behavior of the ***_(2)O_(3) passive layer was observed to form on the FSPed HEA,leading to excellent corrosion properties from the polarization corrosion *** refinement in the SZ enhances the rapid formation of the passive layer,thus,leading to better corrosion properties in the front surface of the FSPed *** localized corrosion behavior of the FSPed HEA was predicted to be caused by the micro-galvanic nature of the HEA,which leads to an increase in polarization at the anodic sites(pits).A numerical model was established using the corrosion parameters from the experiment to simulate the localized corrosion behavior on the surface of the FSPed HEA in a neutral *** predicted initial pitting potential and corresponding current density agree well with the experimental *** model is also capable of tracking the dissolution of the pits over longer periods.

关键词： High entropy alloys Friction stir processing Grain refinement Passive film Pitting Simulation

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Pivotal role of Boron-doped Graphene Quantum dots in Stretchable and Self-Healable red Emission Nanocomposite Film: One Step Advance for White Light Emitting diodes Application

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SSrN 2023年

作者： Hsu, Chen-Chu Laysandra, Livy Chiu, Yu-Cheng Liu, Wei-ren Department of Chemical Engineering R&D Center for Membrane Technology Center for Circular Economy Chung Yuan Christian University 200 Chung Pei Road Chung Li District Taoyuan City32023 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology No. 43 Section 4 Keelung Rd Da'an District Taipei City106335 Taiwan

Highlights• The BGQds were synthesized by a hydrothermal method derived from 1,3,6-Trinitropyrene (TNP) and boric acid.• BGQds demonstrate exceptional luminescence stability and excitation-independent PL, exhibiting bright red-emission for excited at 603 nm.• The stretchable and self-healing red-emission nanocomposite films were prepared by incorporating BGQds into PBA0.8-co-PNMA0.2 amphiphilic copolymer via a blending process.• BGQds serve as external H-bond cross-linkers leading to an improvement in interrelated-material performances through the synergistic effect of dynamic hydrogen bonds.• The combination of red-emission nanocomposite film and (Ba,Sr)2SiO4:Eu2+ phosphor produces WLEds with an impressive CrI value of up to 89.4. © 2023, The Authors. All rights reserved.

关键词： Nanocomposites

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