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Food-derived Crassostrea gigas peptides self-assembled supramolecules for scarless healing

COMPOSITES PART B-engineering 2022年第0期246卷

作者： Yang, Faming Wang, Zhouchi Zhao, Di Hu, Le Cui, Shenghao Chen, Liqi Guo, Tingting Pan, Panpan Chen, Jingdi Shandong Univ Marine Coll Weihai 264209 Peoples R China Shandong Lab Adv Mat & Green Mfg Yantai 265599 Peoples R China

Peptides self-assembled materials are considered as excellent candidates for tissue engineering due to their excellent efficacy. However, their development and application are severely restricted on account of their single function, low yield and limited source, so it is urgent to explore new research strategy of self-assembly materials of multifunctional active peptides. In this study, we prepared multifunctional supramolecular materials (CNPs) with randomized peptides self-assemblies from Crassostrea gigas meats utilizing Controllable-hydrolysis (Neutral protease) process to explore their mechanism on dermal wound healing in in vitro and in vivo experiments through two (topical application & oral) administration pathways. Physical and chemical analysis results demonstrated that CNPs were novel supramolecules consisting of peptides with molecular weights of 605-2067 Da and lengths of 5-15 amino acids that randomly self-assemble into nano-structures. Results of in vitro tests suggested that CNPs possessed procoagulant, antioxidant effect and promote the proliferation of HaCaT cells. Results of in vivo studies revealed that two administration pathways of naturally safe CNPs could inhibit inflammation, promote fibroblast proliferation and revascularization, and accelerate the epithelialization pro-cess. Thus favoring a balanced repair tissue collagen I/III ratio and the promotion of hair follicle regeneration, with no effect on the intestinal flora structure and having a certain positive effect to achieve scarless healing. Overall, this study presents a simple preparation method of a safe and multifunctional novel self-assembling peptides material and its great potential in soft tissue repair.

关键词： Crassostrea gigas Peptides self -assembled supramolecules Topical application & oral administration Scar -free skin wound healing

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A mixed mutation strategy genetic algorithm for the effective training and design of optical neural networks

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OPTICAL FIBER technology 2024年 82卷

作者： Chai, Jie Bi, Meihua Teng, Xuyang Yang, Guowei Hu, Miao Hangzhou Dianzi Univ Sch Commun Engn Xiasha Gaojiaoyuan 2rd St Hangzhou 310018 Zhejiang Peoples R China Soochow Univ Res Ctr New Opt Fiber Technol & Commun Network Eng 333 Ganging East Rd Suzhou 215301 Jiangsu Peoples R China

The optical neural networks (ONNs) have received lots of attention due to their superior speed and energy efficiency in large-scale linear matrix operations compared to electrical neural networks. Undoubtedly, the training and designing weights and other hyperparameters of ONNs to enhance performance is a pivotal concern. We present a mixed mutation strategy genetic algorithm (M2SGA) to deal with the problem of inefficient training. By combining the single-point mutation (SM), the uniform mutation (UM), and the Gaussian mutation (GM) operators, our method can achieve faster convergence speed and better robustness for the parameter training of ONNs than the standard genetic algorithm (SGA). Furthermore, an N-layer feedforward optical neural network based on Mach-Zehnder interferometers (MZIs) and electro-optic modulators (EOMs) is constructed to verify the feasibility of our scheme. And, four datasets are used to further confirm the effect of our proposed scheme on the classification tasks. Additionally, the impact of alternative operators on the performance of the algorithm is evaluated. Experimental results demonstrate that M2SGA exhibits higher accuracy and lower mean squared error compared with SGA. Consequently, M2SGA holds tremendous potential for applications in object detection, image processing and other related fields thanks to its great effect in datasets classification.

关键词： ONNs SGA Mutation operators Dataset classification M2SGA

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Plasma-assisted fabrication of multiscale materials for electrochemical energy conversion and storage

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Carbon Energy 2025年第2期7卷 144-171页

作者： Chen Li Tengfei Zhang Zhong Qiu Beirong Ye Xinqi Liang Xin Liu Minghua Chen Xinhui Xia Chen Wang Wangjun Wan Yongqi Zhang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduChina Key Laboratory of Engineering Dielectric and Applications(Ministry of Education) School of Electrical and Electronic EngineeringHarbin University of Science and TechnologyHarbinChina State Key Laboratory of New Textile Materials and Advanced Processing Technology Wuhan Textile UniversityWuhanChina College of Materials Science and Engineering Zhejiang University of TechnologyHangzhouChina School of Materials Science and Engineering Zhejiang UniversityHangzhouChina Zhejiang Academy of Science and Technology for Inspection and Quarantine HangzhouChina

Plasma,the fourth state of matter,is characterized by the presence of charged particles,including ions and *** has been shown to induce unique physical and chemical ***,there have been increased applications of plasma technology in the field of multiscale functional materials'preparation,with a number of interesting *** review will begin by introducing the basic knowledge of plasma,including the definition,typical parameters,and classification of plasma *** this,we will provide a comprehensive review and summary of the applications(phase conversion,doping,deposition,etching,exfoliation,and surface treatment)of plasma in common energy conversion and storage systems,such as electrocatalytic conversion of small molecules,batteries,fuel cells,and *** article summarizes the structure-performance relationships of electrochemical energy conversion and storage materials(ECSMs)that have been prepared or modified by *** also provides an overview of the challenges and perspectives of plasma technology,which could lead to a new approach for designing and modifying electrode materials in ECSMs.

关键词： electrocatalysts energy conversion and storage nanomaterials plasma

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Friction-induced temperature rise at energetic β-HMX crystal interfaces: Part I. Role of contact pressure and speed under dry sliding friction

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TRIBOLOGY INTERNATIONAL 2024年 199卷

作者： Li, Guocheng Qu, Yanyang Liu, Rui Duan, Huijing Yu, Jiaxin He, Hongtu Yin, Ying Southwest Univ Sci & Technol Key Lab Testing Technol Mfg Proc Minist Educ Mianyang 621010 Peoples R China China Acad Engn Phys Inst Chem Mat Mianyang 621999 Peoples R China Beijing Inst Technol State Key Lab Explos Sci & Safety Protect Beijing 100081 Peoples R China

In this study, the friction behavior and surface temperature of beta-phase octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (beta-HMX), a widely used energetic crystal in modern weapon industry, is systematically investigated by varying the contact pressure and sliding speed as well as sliding cycles. Experimental results reveals that the maximum temperature rise on beta-HMX surface can be well-correlated with the frictional power density involving the friction coefficient and contact pressure and sliding speed. The frictional work-heat conversion rate of beta-HMX surface decreases with the frictional power density and then stabilized at similar to 43.7 % upon single scratch and it decreases with sliding cycles upon reciprocating scratch. These findings can provide deep insights into the frictional safety of energetic materials.

关键词： beta-HMX Friction Temperature rise Work-heat conversion rate

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Additive manufacturing and mechanical properties of martensite/austenite functionally graded materials by laser engineered net shaping

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JOURNAL OF MATERIALS RESEARCH AND technology-JMR&T 2022年 17卷 1570-1581页

作者： Zhang, Chi Liu, Yang Lu, Jiaqi Xu, Like Lin, Yaojun Chen, Pingan Sheng, Qiang Chen, Fei Wuhan Univ Technol State Key Lab Adv Technol Mat Synth & Proc Wuhan 430070 Peoples R China Wuhan Univ Sci & Technol Sch Mat & Met Wuhan 430081 Peoples R China

Laser engineered net shaping (LENS) is an advanced additive manufacturing technology combining rapid prototyping and synchronization technology. Its multi-powder feeder delivery system enables multi-materials building in single deposition, which is appropriate for additive manufacturing of functionally graded materials (FGMs). In this study, martensitic-stainless steel (MSS)/austenitic stainless steel (ASS) FGMs with composition transitioning from 100% MSS incrementally graded to 100% ASS by 25% composition gradients are fabricated by LENS. The Vickers hardness of MSS/ASS FGMs ranges from 358 to 170 HV. The decrease of hardness is found to relate to the grain-growth region with the increase of austenite. The obtained specimens of MSS/ASS FGMs show a tensile strength of 669 MPa and an elongation of 19%. In addition, the fracture location of MSS/ASS FGMs in tensile test is in the region of 100% ASS, which is dominated by austenite structure. Finally, the Scheil-Gulliver model is introduced to validate the phase formation of MSS/ASS FGMs' failure region. Experimental and modeling results indicate that precipitation of a-ferrite in the austenite structure leads to reduced ductility of MSS/ASS FGMs.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Laser engineered net shaping Functionally graded materials Martensite Austenite Tensile properties Thermodynamic modeling

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Recent advances in lithium-rich manganese-based cathodes for high energy density lithium-ion batteries

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CHEMICAL COMMUNICATIONS 2023年第59期59卷 9029-9055页

作者： Chen, Hexiang Sun, Chunwen China Univ Min & Technol Beijing Sch Chem & Environm Engn Beijing 100083 Peoples R China

The development of society challenges the limit of lithium-ion batteries (LIBs) in terms of energy density and safety. Lithium-rich manganese oxide (LRMO) is regarded as one of the most promising cathode materials owing to its advantages of high voltage and specific capacity (more than 250 mA h g(-1)) as well as low cost. However, the problems of fast voltage/capacity fading, poor rate performance and the low initial Coulombic efficiency severely hinder its practical application. In this paper, we review the latest research advances of LRMO cathode materials, including crystal structure, electrochemical reaction mechanism, existing problems and modification strategies. In this review, we pay more attention to recent progress in modification methods, including surface modification, doping, morphology and structure design, binder and electrolyte additives, and integration strategies. It not only includes widely studied strategies such as composition and process optimization, coating, defect engineering, and surface treatment, but also introduces many relatively novel modification methods, such as novel coatings, grain boundary coating, gradient design, single crystal, ion exchange method, solid-state batteries and entropy stabilization strategy. Finally, we summarize the existing problems in the development of LRMO and put forward some perspectives on the further research.

关键词： Manganese oxide

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Robinson Instability of a Double-bunch System 3

Robinson Instability of a Double-bunch System

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3rd IEEE China International Youth Conference on Electrical engineering, CIYCEE 2022

作者： Fan, Ziyu Wang, Jian Lei, Jian Luo, Zhengqiu Yuan, Yi Hu, Chen Li, Xiaofei Fan, Kuanjun State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China State Grid Jiangxi Electric Power Co. Ltd Nanchang330096 China China Electric Power Research Institute Wuhan430074 China

ISBN: (数字)9781665477321

ISBN: (纸本)9781665477321

Robinson instability is a common beam instability that is caused by the wakefield excited in the resonant cavity. It will cause the energy spread to increase and deteriorate the beam quality, so it is essential to understand its mechanism and suppress it. Based on the bunch longitudinal motion equation, this paper analyzes two bunches with different particle numbers and synchrotron oscillation frequencies and extends the existing single-bunch Robinson instability theory to the double-bunch system. The particle motion is simulated by software MATLAB, and the simulation results are consistent with the theoretical formulas. This research puts forward specific parameter requirements for the design of the storage ring resonator cavity in the fourth-generation synchrotron radiation light source and gives a strategy to suppress beam instability, which provides a reference for subsequent engineering construction. © 2022 IEEE.

关键词： Cavity resonators

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Recent advances in carbon-resistant anodes for solid oxide fuel cells

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MATERIALS CHEMISTRY FRONTIERS 2023年第10期7卷 1943-1991页

作者： Zhang, Wei Wei, Jialu Yin, Fusheng Sun, Chunwen China Univ Min & Technol Beijing Sch Chem & Environm Engn Beijing 100083 Peoples R China

Solid oxide fuel cells (SOFCs) can efficiently satisfy the power supply demand at any time and place in an environmentally friendly manner. However, considering the commercial application of SOFCs, the deposition of carbon on conventional SOFC anodes (nickel-based anodes) during their operation with hydrocarbon fuels, which leads to a degradation in the cell performance, needs to be well addressed. In this review, we discuss the carbon deposition process in SOFCs, carbon detection methods, and strategies to solve anode carburization, with a primary focus on alternative anode materials. Specifically, the coking mechanism, carbon-resistant strategies, and research development of bimetallic-cermet materials are reviewed in detail. In addition, the principle of in situ nanoparticle exsolution from perovskite materials and factors affecting the growth of dissolved nanoparticles are introduced, and the application of in situ exsolution in anti-carbon anodes is also discussed. Furthermore, we present the carbon deposition phenomenon in SOFC anodes and alternative anode design ideas in terms of simulation, calculation, and reaction kinetic models. Finally, we also give future research directions, especially proposing the potential application of single-atom based anode catalysts in hydrocarbon-fueled SOFCs.

关键词： Anodes

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Ultrasensitive In2O3-Based Nanoflakes for Lung Cancer Diagnosis and the Sensing Mechanism Investigated by Operando Spectroscopy

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ACS SENSORS 2024年第12期9卷 6382-6389页

作者： Cheng, Ye Portela, Raquel Wang, Pingli Liu, Pingwei Mao, Yupeng Lim, Khak Ho Zheng, Jieyuan Yang, Xuan Zhang, Gensheng Ding, Liren Wang, Wen-Jun Li, Bo-Geng Banares, Miguel A. Wang, Qingyue Zhejiang Univ Polytech Inst Inst Zhejiang Univ Quzhou Quzhou 324000 Peoples R China Zhejiang Univ Coll Chem & Biol Engn State Key Lab Chem Engn Hangzhou Peoples R China CSIC E-28049 Madrid Spain Zhejiang Univ Sch Med Affiliated Hosp 2 Dept Crit Care Med Hangzhou 310001 Peoples R China Quzhou Univ Coll Chem & Mat Engn Quzhou 324000 Peoples R China

Rapid gas sensing with high sensitivity and selectivity is pivotal in advanced production, in smart living, and increasingly in medical health applications. This study presents a novel Pt@InNiO x nanoflake isoprene sensor that achieves an exceptionally low limit of detection (LOD) at 2 ppb, the lowest reported for isoprene sensors to date. Notably, it exhibits high selectivity and remarkable antihumidity capacity, thus meeting the stringent requirements for lung cancer screening. To unravel the sensing mechanism, we fabricate an operando DRIFTS-Raman cell coupled to online electrical measurements. It reveals that the ultrasensitive performance of Pt@InNiO x nanoflakes stems from the activated conjugated structure of isoprene by Pt nanoclusters and from the enhanced isoprene adsorption and electron interaction due to the nanoflake morphology. The p-n junction constructed by doping Ni maintains Fermi level equilibrium, shielding it from humidity interference. Practically, we integrate these ultrasensitive Pt@InNiO x nanoflakes into a miniaturized portable electronic device that successfully distinguishes lung cancer patients with expiratory isoprene below 40 ppb, from the healthy population with isoprene above 60 ppb, enabling an accurate diagnosis in clinics. Our work not only provides a breakthrough in low-cost, noninvasive cancer screening through breath analysis but also advances the rational design of cutting-edge gas sensing materials.

关键词： gas sensor breath analysis metal oxide semiconductor operando spectroscopy sensing mechanism

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Droplet microreactor continuous synthesis of hierarchical Rh on CdZnS snowflakes for enhanced photocatalytic hydrogen evolution

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CHEMICAL engineering JOURNAL 2024年 499卷

作者： Zhang, Delu Zhang, Chao Ye, Binhao Ma, Hongsheng Wang, Chao Zhuang, Tao Lv, Zhiguo Qingdao Univ Sci & Technol Coll Chem Engn State Key Lab Base Ecochem Engn Qingdao 266042 Peoples R China Wuhan Univ Technol State Key Lab Adv Technol Mat Synth & Proc Wuhan 430070 Peoples R China Qingdao Univ Sci & Technol Key Lab Rubber Plast Shandong Prov Key Lab Rubber Plast Minist Educ Qingdao 266042 Shandong Peoples R China

Promising droplet microreactor-cation exchange strategy is utilized to construct the unique Rh hierarchical structure (RhHS) and Rh nanoclusters (RhNCs) on CdZnS (CZS) snowflakes. The fabricated RhHS/RhNCs/CZS achieves an optimal hydrogen evolution activity of 926.0 mu mol h- 1 g- 1, which is 5.9 and 10.5 folds enhancement that of CZS and CdS, respectively. The enhanced activity for H2 generation can be attributed to the RhHS/RhNCs (accelerating electron transfer), as well as the hierarchical structure of RhHS and CZS, which enhances reflection-absorption of visible light. Theoretical calculations reveal that Rh species can serve as new H* generationrelease sites, reducing the energy barrier for hydrogen evolution. Notably, in situ Raman confirmed the Rh (RhH) and S (S-H) two main active sites for proton reduction during hydrogen generation. This paper provides a novel approach to constructing hierarchical structure photocatalyst (RhHS/RhNCs/CZS) for enhanced photocatalytic H2 production.

关键词： Hierarchical structure Nanoclusters Droplet microreactor Cation exchange Snowflakes Hydrogen evolution

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