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Novel intelligent reasoning system for tool wear prediction and parameter optimization in intelligent milling

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Advances in Manufacturing 2024年第1期12卷 76-93页

作者： Long-Hua Xu Chuan-Zhen Huang Zhen Wang Han-Lian Liu Shui-Quan Huang Jun Wang School of Mechanical Engineering Yanshan UniversityQinhuangdao066004HebeiPeople’s Republic of China center for Advanced Jet Engineering Technologies(CaJET) Key Laboratory of High-efficiency and Clean Mechanical Manufacture(Ministry of Education)National Experimental Teaching Demonstration Center for Mechanical Engineering(Shandong University)School of Mechanical EngineeringShandong UniversityJinan250061People’s Republic of China Institute of Manufacturing Technology Guangdong University of TechnologyGuangzhou510006People’s Republic of China

Accurate intelligent reasoning systems are vital for intelligent *** this study,a new intelligent reasoning system was developed for milling processes to accurately predict tool wear and dynamically optimize machining *** developed system consists of a self-learning algorithm with an improved particle swarm optimization(IPSO)learning algorithm,prediction model determined by an improved case-based reasoning(ICBR)method,and optimization model containing an improved adaptive neural fuzzy inference system(IANFIS)and *** results showed that the IPSO algorithm exhibited the best global convergence *** ICBR method was observed to have a better performance in predicting tool wear than standard CBR *** IANFIS model,in combination with IPSO,enabled the optimization of multiple objectives,thus generating optimal milling *** paper offers a practical approach to developing accurate intelligent reasoning systems for sustainable and intelligent manufacturing.

关键词： Improved particle swarm optimization(IPSO)algorithm Improved case-based reasoning(ICBR)method Adaptive neural fuzzy inference system(ANFIS)model Tool wear prediction Intelligent manufacturing

Reversing free-electron transfer of sulfide cocatalyst for exceptional photocatalytic H_(2)evolution

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Journal of Materials Science & Technology 2024年第4期171卷 147-149页

作者： Yanfeng Zhang Zhenyi Zhang national experimental Chemistry teaching center Hebei Key Laboratory of Inorganic Nano-materialsCollege of Chemistry and Materials ScienceHebei Normal UniversityShijiazhuang 050024China Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials and Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Minzu UniversityDalian 116600China

Recently,Yu and co-workers deeply explore the potential impact of free electron transfer between co-catalysts and photocatalyst carriers on H_(2)evolution efficiency of active sites over MoS_(2+x).They pro-pose an electron-reversal tactics to evade the unexpected electron transfer and synchronously regulate the above transfer in a beneficial orientation for weakening hydrogen adsorption on S ***,this highlight not only discusses and summarizes the essences of electron reversal and the optimized H ad-sorption/desorption mechanism,but also emphasizes the significance of femtosecond transient absorp-tion spectroscopy(fs-TAS)and in-situ irradiated X-ray photoelectron spectroscopy(ISI-XPS)for revealing charge transfer dynamics and *** anticipate that this highlight can disseminate a new per-spective on the roles of photocatalyst carriers in improving cocatalytic H_(2)-production kinetics.

关键词： Photocatalysis Cocatalyst Electron reversal Antibonding-orbital occupancy S–H bonds

High-quality Development Path of Graduate Education in Aquaculture Discipline:A Case Study of Guangdong Ocean University

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Asian Agricultural Research 2024年第9期16卷 41-44页

作者： Huanying PANG Miao XIE Shuanghu CAI Yucong HUANG Jichang JIAN College of Fisheries Guangdong Ocean UniversityZhanjiang 524088China national experimental teaching Demonstration center for Aquatic Science and Technology Zhanjiang 524088China

Aquaculture is a discipline system that focuses on exploring the growth,development,reproduction,aquaculture,and resources of aquatic animals and plants,and their complex *** the tide of the"high-quality development"strategy,the aquaculture discipline is also facing new opportunities and challenges for transformation,upgrading,and deepening ***,exploring and practicing an effective path for the high-quality development of graduate education in aquaculture is not only the key to promoting the transformation of graduate education in aquaculture from scale expansion to quality improvement,but also has immeasurable value for implementing the strategy on developing a quality workforce and the strategy of scientific and technological *** high-quality development of graduate education in aquaculture can be promoted from the following aspects:optimizing and improving the construction of the graduate education system,focusing on enhancing the quality of high-level talent cultivation,strengthening the overall strength of the graduate supervisor team,actively promoting the adjustment and upgrading of the disciplinary and professional structure,strengthening the construction of resource platforms and deepening the implementation of collaborative education mechanisms,and continuously expanding and deepening the new pattern of international exchange and *** the comprehensive promotion of the above paths,the aim is to fully build a model for the improvement and governance of graduate education quality.

关键词： Aquaculture Graduate education High-quality development

Construction of Molecular Biology and Experiment Case Library for Graduate Students

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Asian Agricultural Research 2024年第8期16卷 47-49页

作者： Huanying PANG Miao XIE Shuanghu CAI Yu HUANG Yucong HUANG Jichang JIAN Fisheries College Guangdong Ocean UniversityZhanjiang 524088China national Fisheries Science and Technology experimental teaching Demonstration center Zhanjiang 524088China

Molecular Biology and Experiment is considered fundamental for graduate students specializing in aquaculture at Guangdong Ocean *** discipline focuses on the examination of the structure and function of macromolecules,including proteins and nucleic ***,it elucidates biological phenomena and principles at the molecular level,making it an essential foundational course for students pursuing various biology *** a foundational course for the basic application of aquaculture,Molecular Biology and Experiment requires guidance through numerous examples and ***,there are several challenges to address in developing the case ***,a case library has been established to meet the course requirements of Molecular Biology and Experiment for modern graduate students,with the central goal of reforming the educational model of higher education institutions and enhancing the effectiveness and quality of talent *** strategy is designed to nurture highly skilled professionals who can address the current needs of the industry.

关键词： Case library Molecular biology and experiment Aquaculture major

Effects ofβ-1,3-glucan and ascorbic acid on the nutritional-immune response and antioxidant signaling pathways of live tiger grouper during simulated transport

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Aquaculture and Fisheries 2024年第2期9卷 265-272页

作者： Bo Wu Zhenkun Xu Jie Cao Qi Wang Jun Mei Jing Xie College of Food Science and Technology Shanghai Ocean UniversityShanghai201306China national experimental teaching Demonstration center for Food Science and Engineering Shanghai Ocean UniversityShanghai201306China Shanghai Engineering Research center of Aquatic Product Processing and Preservation Shanghai201306China Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation Shanghai201306China

Transport in water is the most common method for transporting live fish in China,however,transport is a strong *** stress could lead to a reduced immune and antioxidant system function of tiger grouper,resulting in sickness and ***,tiger grouper were continuously stressed during transport,which resulted in quality *** is necessary that find a way to relieve the stress of transportation of tiger *** acid is not only a good anti-stress agent,but it is also an effective immunostimulant.β-1,3-glucan is a feed additive that can enhance the immune response of ***,this study evaluated the effects ofβ-1,3-glucan and ascorbic acid on the nutritional-immune response and antioxidant signaling pathways of live tiger grouper during simulated *** indicated that addingβ-1,3-glucan and ascorbic acid in transport-water muted the increase of alanine aminotransferase(ALT)and aspartate aminotransferase(AST)*** addition,β-1,3-glucan and ascorbic acid activated Nrf2 and mediated TOR expression and then up-regulate related mRNA expression of antioxidant and immune *** concluded that the application ofβ-1,3-glucan and ascorbic acid inhibit the increase of metabolism enzymes and inflammatory factors and activate immune and antioxidant signaling pathways to relieve oxidant stress,immune response,and *** the loss of amino acids provided nutrients to relieve oxidative stress and immune response,which demonstrated immune-nutritional response in live tiger grouper during simulated *** results may provide a new solution for alleviating the decline of immune and antioxidant function of tiger grouper caused by transportation stress.

关键词： Tiger grouper β-1,3-Glucan Ascorbic acid Immune response Antioxidant signaling pathway

Untargeted metabolomic profiling， nutritional composition and enzyme changes on Bigeye tuna(Thunnus obesus) during cold storage by HPLC-MS coupled with logistic regression

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Food Science and Human Wellness 2024年

作者： Xin-Yun Wang Zi-Xuan Zhao Jun Yan Jing Xie Shanghai Engineering Research center of Aquatic Product Processing & Preservation， Shanghai Ocean University The International Peace Maternity and Child Health Hospital， School of Medicine， Shanghai Jiao Tong University national experimental teaching Demonstration center for Food Science and Engineering， Shanghai Ocean University College of Food Science & Technology， Shanghai Ocean University

Bigeye tuna is a protein-rich fish that is susceptible to spoilage during cold storage， however， there is limited information on untargeted metabolomic profiling of bigeye tuna concerning spoilage-associated enzymes and metabolites. This study aimed to investigate how cold storage affects enzyme activities， nutrient composition， tissue microstructures and spoilage metabolites of bigeye tuna. The activities of cathepsin B， H， L increased， while Na+/K+-ATPase and Mg2＋-ATPase decreased， α-glucosidase （AG） and β-1，4-N-acetylglucosaminidase （NAG）， lipase and lipoxygenase first increased and then decreased during cold storage， suggesting that proteins undergo degradation and ATP metabolism occurs at a faster rate during cold storage. Nutrient composition （moisture， protein， and lipid content）， free amino acids， total amino acids decreased， suggesting that the nutritional value of bigeye tuna was reduced. Besides， a logistic regression equation has been established as a food analysis tool and assess the dynamics and correlation of the enzyme of bigeye tuna during cold storage. Based on untargeted metabolomic profiling analysis， a total of 484 metabolites were identified as significantly differential metabolites in the bigeye tuna contained several spoilage metabolites involved in lipid metabolism （1-Acyl-sn-glycero-3phosphocholine， Glycerophosphocholine， Choline phosphate）， amino acid metabolism (L-Histidine， 5-Deoxy-5'-（methylthio）adenosine， 5-Methylthioadenosine)， carbohydrate metabolism （D-Gluconicacid， beta-D-Fructose 1，6-bisphosphate， D-Glyceraldehyde 3-phosphate）. The results of tissue microstructures of tuna showed a looser network and visible deterioration of tissue fiber during cold storage. Therefore， metabolomic analysis and tissue microstructures provide insight into the spoilage mechanism investigations on bigeye tuna during cold storage.

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Choline suppresses hepatocellular carcinoma progression by attenuating AMPK/mTOR-mediated autophagy via choline transporter SLC5A7 activation

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Hepatobiliary Surgery and Nutrition 2024年第3期13卷 393-411,I0001,I0002页

作者： Chen Wang Zhao-Yan Liu Wen-Ge Huang Zhi-Jun Yang Qiu-Ye Lan Ai-Ping Fang Meng-Jun Hou Xiao-Lin Luo Yao-Jun Zhang Si Chen Hui-Lian Zhu Department of Nutrition School of Public HealthSun Yat-sen UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Food Nutrition and HealthSchool of Public HealthSun Yat-sen UniversityGuangzhouChina center of experimental Animals Sun Yat-sen UniversityGuangzhouChina experimental and teaching center for Public Health School of Public HealthSun Yat-sen UniversityGuangzhouChina Department of Hepatobiliary Oncology Sun Yat-sen University Cancer CenterGuangzhouChina

Background:Hepatocellular carcinoma(HCC)is one of the leading causes of cancer-associated *** evidence suggests that autophagy plays a critical role in HCC tumorigenesis,metastasis,and *** is an essential nutrient related to prolonged survival and reduced risk of ***,it remains unclear whether this phenomenon is mediated by ***:Two HCC cell lines(HUH-7 and Hep3B)were used in the present *** growth was evaluated by cell counting kit 8(CCK-8),colony formation,and in vivo mouse xenografts *** motility was calculated by wound healing and transwell *** were measured by transmission electron microscope(TEM),and autophagy flux was detected by mRFP-GFP-labeled LC3 *** mRNA level of genes was measured by quantitative real-time polymerase chain reaction(qRT-PCR).The protein levels were detected by Western blotting(WB).Results:We found that choline inhibited the proliferation,migration,and invasion of HCC cells by downregulating autophagy in vitro and in *** expression of the solute carrier family 5 member 7(SLC5A7),a specific choline transporter,correlated with better HCC *** further discovered that choline could promote SLC5A7 expression,upregulate cytoplasm p53 expression to impair the AMPK/mTOR pathway,and attenuate ***,we found that choline acted synergistically with sorafenib to attenuate HCC development in vitro and in ***:Our findings provide novel insights into choline-mediated autophagy in HCC,providing the foothold for its future application in HCC treatment.

关键词： Hepatocellular carcinoma(HCC) autophagy choline solute carrier family 5 member 7(SLC5A7)

Improvements in properties of NdFeB magnets obtained via magnetron sputtering and thermal diffusion

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Journal of Rare Earths 2024年第9期42卷 1710-1716,I0003页

作者： Jin Tang Weichao Huang Dan Li School of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou545006China China Rare Earth(Guangxi)Jinyuan Rare Earth New Materials Co. Ltd.Hezhou542603China China Rare Earth Group Co. Ltd.Ganzhou341000China center of experimental teaching for Common Courses Panzhihua UniversityPanzhihua617000China

The grain boundary diffusion process(GBDP) of Dy and DyAl on sintered NdFeB magnets was conducted via magnetron-sputtering deposition of Dy and DyAl films to enhance coercivity(H_(cj)),The magnetic properties,microstructure and anti-corrosion properties of Dy-surface-alloying NdFeB magnets obtained via magnetron sputtering and thermal diffusion were *** H_(cj) of the Dy_(95)Al_(5)-NdFeB magnet increases by 32.68%,while the remanence declines ***,X-ray diffraction and microstructural analysis confirm the formation of Dy-rich shells,the higher-magnetic-anisotropy field of hard(Nd_(x)Dy_(1-x))2(FeAl)_(14)B magnetic phases and an optimised grain boundary structu re,contributing to the H_(cj)enhancement of the *** elemental distribution and diffusion mechanism of the magnets are also ***,the corrosion resistance of the Dy_(95)Al_(5)-NdFeB magnet is substantially improved by enhancing the electrochemical stability and optimising the distribution and morphology of the intergranular *** findings of this study are of substantial importance in the development of low-heavy rare-earth sintered NdFeB magnets.

关键词： Magnetron sputtering NdFeB Rare earths Microstructure Magnetic property Corrosion resistance

Friction of graphene on a substrate with a cavity defect

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Science China(Technological Sciences) 2024年第9期67卷 2834-2841页

作者： ZHOU Peng HUO ZhanLei CHANG TienChong Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai Frontier Science Center of MechanoinformaticsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China The center for Computational Mechanics and Engineering Applications Provincial Mechanics Experimental Teaching Demonstration CenterSchool of Civil EngineeringHebei University of EngineeringHandan 056038China Shanghai Institute of Aircraft Mechanics and Control Tongji UniversityShanghai 200092China Joint-Research center for Computational Materials Zhejiang LaboratoryHangzhou 311100China

The frictional behavior of supported graphene is known to be influenced by the physical properties and surface morphologies of the underlying substrate. However, it is unclear how a surface defect on the substrate affects the friction of supported graphene,and it is even unknown how to define the defect-induced friction force in this context. Here we conduct molecular dynamics(MD) simulations to investigate the friction between a square diamond slider and a graphene sheet supported by a copper substrate with a surface cavity defect. Our results demonstrate that the defect-induced friction exhibits a nonlinear increase with cavity size, while it decreases nonlinearly with slider size. We propose that the definition of defect-induced friction can be linked to the increase in friction work over the length of the slider, and is closely correlated to the defect-induced relative change in indentation depth and the ratio of the cavity area to the contact area. These findings provide a comprehensive evaluation of the impact of a substrate cavity defect on the friction of supported graphene and offer insights that may have broader implications for understanding defect-induced friction in other two-dimensional materials.

关键词： friction graphene underneath substrate cavity defect