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Design of an automated robotic microinjection system for batch injection of zebrafish embryos and larvae

Microsystems & Nanoengineering 2024年第1期10卷 89-103页

作者： Zhongyi Guo Nana Ai Wei Ge Qingsong Xu Department of Electromechanical Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina Department of Biomedical Sciences and Centre of Reproduction Development and Aging(CRDA)Faculty of Health SciencesUniversity of MacaoMacaoChina

This paper presents the design of a vision-based automated robotic microinjection system for batch injection of both zebrafish embryos and larvae.A novel visual recognition algorithm based on an automatic threshold and excessive dilatation is introduced to accurately identify the center of zebrafish embryos and larval yolks.A corresponding software system is developed using the producer-consumer model as the framework structure,and a friendly user interface is designed to allow operators to choose from a range of desired functions according to their different *** addition,a novel microstructural agarose device is designed and fabricated to simultaneously immobilize mixed batches of embryos and ***,a prototype microinjection system is fabricated by integrating hardware devices with visual *** experimental study is conducted to verify the performance of the robotic microinjection *** results show that the reported system can accurately identify zebrafish embryos and larvae and efficiently complete batch microinjection tasks of the mixtures with an injection success rate of 92.05%in 13.88 s per *** with manual and existing microinjection systems,the proposed system demonstrates the merits of versatility,excellent efficiency,high success rate,high survival rate,and sufficient stability.

关键词： zebra automated hardware

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Oat avenanthramide B alleviates high-fat diet-induced obesity via regulating fatty acid metabolism involved in gut bacteria and fungi remodeling

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Food science and Human Wellness 2025年第2期14卷 769-781页

作者： Yongyong Liu Kai Huang Xiao Guan Sen Li Hongdong Song Ying Zhang Yu Zhang Zhu Sun Zhiquan Yu School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China National Grain Industry(Urban Grain and Oil Security)Technology Innovation Center Shanghai 200093China Inner Mongolia Yangufang Whole Grain Industry Development Co. Ltd.Hohhot 011799China

Oat avenanthramides(AVNs)have been found to exhibit novel lipid-lowering ***,the mechanism remains *** this study,the effect of avenanthramide B(AVN B),as one of the major AVNs,on highfat diet(HFD)-induced mice was *** showed that AVN B significantly inhibited weight gain and improved hepatic and serum lipid biochemical *** RNA-sequencing analysis suggested that AVN B significantly modulates fatty acid(FA)*** real-time qualitative polymerase chain reaction(RT-q PCR)and Western blot results indicated that AVN B could alleviate FA synthesis by activating the adenosine 5'-monophosphate(AMP)-activated protein kinase(AMPK)-sterol regulatory element binding protein-1c(SREBP1c)-fatty acid synthase(FAS),and increase FA oxidation by activating the AMPK/carnitine palmitoyltransferase 1A(CPT1A)and peroxisome proliferator-activated receptorα(PPARα).Additionally,AVN B had a regulating effect on ileum lipid metabolism by inhibiting intestinal cell differentiation and downregulating the expression levels of FA absorption-related protein and ***,AVN B promoted the growth of beneficial bacteria and fungi such as Coriobacteriaceae_UCG-002,Parvibacter,Enterococcus,and Aspergillus,while decreasing the abundance of Roseburia,unclassified_f_Lachnospiraceae,Cladosporium,Eurotium,unclassified_f_Aspergillaceae and unclassified_f_*** these results provided new points of the lipid-lowing mechanism of AVNs and oats via the gut-liver axis.

关键词： Avenanthramide B High-fat diet Fatty acid metabolism Ileal lipid absorption Gut bacteria and fungi

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Innovation and Application of University Research Management in the Context of Big Data 23

Innovation and Application of University Research Management...

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6th International Conference on Big Data and Education, ICBDE 2023

作者： Zhu, Bin Wang, Shuai School of Materials and Energy University of Electronic Science and Technology of China China Institute of Science and Technology Development University of Electronic Science and Technology of China China

ISBN: (纸本)9798400708220

With the development of information technology, big data has also attracted more and more attention. The application of big data technology has played a huge role in promoting the informatization of university scientific research management, effectively improving the work efficiency of university scientific research management, and making the networking and collaborative office of university scientific research management a reality. This paper analyzes the problems existing in the management of scientific research in colleges and universities and the suggestions on the application of big data for scientific research management. Through practical application cases, the advantages of big data applied to university scientific research management are expounded from the aspects of project management classification and collaborative office. © 2023 ACM.

关键词： Informatization

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Rare earth recovery from fluoride molten-salt electrolytic slag by sodium carbonate roasting-hydrochloric acid leaching

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Journal of Rare Earths 2023年第8期41卷 1242-1249,I0005页

作者： Hao Wu Huashan Yan Yanzhen Liang Sen Qiu Xiaowen Zhou Dongmei Zhu Tingsheng Qiu Collaborative Innovation Center for Development and Utilization of Rare Metal Resources Co-sponsored by Ministry of Education and Jiangxi Province Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Province Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou 341000China School of Resources and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Fluorinated rare earth molten-salt electrolytic slag contains a considerable amount of rare earth elements,as well as a variety of heavy metals and fluorides that cause environmental ***,it is of great importance to fully utilise this *** this study,the transformation mechanism of fluorinated rare earth molten-salt electrolytic slag roasted with sodium carbonate,and the regulation mechanism of rare earth leaching under different roasting conditions were investigated with the help of thermodynamic calculation of the reactions and kinetic *** thermodynamic and differential thermal thermogravimetric(DTA-TG)analysis shows that the transformation of rare earth fluoride to rare earth oxide is promoted at elevated ***,the leaching experimental results show that increasing the temperature,time,hydrochloric acid concentration,and liquid-solid ratio can effectively promote the recovery of rare *** optimum experimental conditions are a roasting temperature of 700℃,roasting time of 2 h,and sodium carbonate to molten salt electrolytic slag mass ratio of 0.6,followed by leaching at 80℃with a liquid-solid ratio of 10:1 by adding 3 moI/L hydrochlo ric acid with stirring for 2 *** these conditions,the rare earths in the molten salt electrolytic slag are biologically transformed at a lower temperature and the leaching efficiency of rare earths exceeds 98%.

关键词： Fluorinated rare earth molten-salt electrolytic slag Sodium carbonate Roasting Transformation mechanism Leaching Rare earths

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Constitutive model of viscoelastic dynamic damage for the material of gas obturator in modular-charge howitzer

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Defence technology（防务技术） 2024年第9期39卷 203-216页

作者： Zhonggang Li Longmiao Chen Yifan Li Yufeng Jia Quan Zhang School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China Technology Center Shanxi North Machine-building Co.Ltd.Taiyuan 030009China Research and Development Department Kelong New Material Technology Co.Ltd.Xianyang 712000China

In order to investigate the mechanical response behavior of the gas obturator of the breech mechanism,made of polychloroprene rubber(PCR), uniaxial compression experiments were carried out by using a universal testing machine and a split Hopkinson pressure bar(SHPB), obtaining stress-strain responses at different temperatures and strain rates. The results revealed that, in comparison to other polymers, the gas obturator material exhibited inconspicuous strain softening and hardening effects;meanwhile, the mechanical response was more affected by the strain rate than by temperature. Subsequently, a succinct viscoelastic damage constitutive model was developed based on the ZWT model, including ten undetermined parameters, formulated with incorporating three parallel components to capture the viscoelastic response at high strain rate and further enhanced by integrating a three-parameter Weibull function to describe the damage. Compared to the ZWT model, the modified model could effectively describe the mechanical response behavior of the gas obturator material at high strain rates. This research laid a theoretical foundation for further investigation into the influence of chamber sealing issues on artillery firing.

关键词： Breech mechanism Gas obturator Polychloroprene rubber Constitutive model Strain rate Damage

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High entropy La(Cr_(0.2)Mn_(0.2)Fe_(0.2)Co_(0.2)Ni_(0.2))O_(3)with tailored eg occupancy and transition metal-oxygen bond properties for oxygen reduction reaction

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Journal of Materials science & technology 2024年第27期194卷 236-246页

作者： Wenyi Li Zhenxin Zhao Jinyu Zhao Yongzhen Wang Xiaomin Wang College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi Joint Laboratory of Coal based Solid Waste Resource Utilization and Green Ecological Development Taiyuan 030024China

Forming high entropy oxide provides a feasible approach to finding a balance among moderate eg oc-cupancy,high transition metal-oxygen(TM-O)covalency,and lattice energy,which is essential to en-sure efficient and durable oxygen reduction reaction(ORR)process for perovskite lanthanide-transition metal oxides(LaTMO_(3)).However,due to the compositional complexity,clarifying the relevance among the high entropy components,eg occupancy,TM-O properties,and ORR performance still remains a ***,adopting the B site entropy-driven strategy,a series of LaTMO_(3)(TM=Cr,Mn,Fe,Co,Ni)with tunable eg occupancy and TM-O bond properties are synthesized,and the correlations between high entropy elements,eg occupancy,TM-O properties,and ORR performances are revealed quantitively based on the crystal field theory and the Phillips-Van Vechten-Levine(P-V-L)valence bond *** en-tropy La(Cr_(0.2)Mn_(0.2)Fe_(0.2)Co_(0.2)Ni_(0.2))O_(3)delivers a low overpotential of 493 mV(vs.503 mV for LaMnO_(3))and a minuscule decline by only 1.7%(vs.4.4%for LaMnO_(3))in half wave potential after 10,000 cycles,which can be associated with the tailored eg occupancy(1.06)and the significant enhancement in both TM-O covalency(4%)and lattice energy(691.75 kJ mol^(-1)).This work not only demonstrates the prospects of high entropy LaTMO_(3)in the ORR field but also provides a new perspective for the quantitative analysis of the structure-activity relationship for high entropy oxide ORR catalysts.

关键词： High entropy oxide e_(g)occupancy TM-O covalency TM-O lattice energy LaTMO_(3) Oxygen reduction reaction

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Cost Allocation for Inventory Problem with Transportation Discount under Carbon Tax Policy

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Journal of Systems science and Systems Engineering 2024年第6期33卷 759-778页

作者： Guojing Chen Dongshuang Hou School of Mathematics and Statistics Northwestern Polytechnical UniversityXi’an710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Sanhang Science&Technology BuildingShenzhen518063China

In this paper,we deal with the problem of cost allocation among multiple retailers in an inventory system with transportation quantity discount under the widely-used carbon tax *** first develop an inventory model with transportation discount under the carbon tax policy,and determine the optimal order quantity per order such that the total cost is minimized in the case of individual and joint *** show that the total cost for the group of retailers can be reduced by placing joint orders while the total carbon emissions may ***,we provide a sufficient condition which indicates that when the costs and carbon emissions associated with each order initiated are relatively high,enterprises can achieve dual objectives(both carbon emission reduction and cost reduction)through joint *** allocate the total cost among the retailers,we introduce an inventory game and show that this game is *** on this,we propose a cost allocation rule,which belongs to the core of the game.

关键词： Supply chain management inventory systems carbon tax transportation discount cooperative games

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Flotation separation depressants for scheelite and calcium-bearing minerals: A review

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1621-1632页

作者： Ziming Wang Bo Feng Yuangan Chen Collaborative Innovation Center for Development and Utilization of Rare Metal Resources Co-sponsored by Ministry of Education and Jiangxi Province Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

Owing to the depletion of wolframite, the focus of tungsten extraction has gradually shifted to scheelite. However, separating the associated minerals(e.g., apatite, fluorite, and calcite) and scheelite is challenging because their surface physicochemical properties are similar to those of scheelite. Fortunately, researchers have made substantial progress in separating the minerals of scheelite by using depressants. This study reviews the application and inhibition mechanism of inorganic depressants in obtaining tungsten from its calcium-bearing minerals. The application of new organic depressants in obtaining tungsten from its calcium-bearing minerals and the associated mechanisms are also summarized. After an objective assessment of inorganic and organic depressants’ advantages and disadvantages, possible future research directions for inorganic and organic depressants are proposed. Herein, we provide a theoretical basis for developing scheelite flotation depressants.

关键词： scheelite calcium-bearing minerals flotation depressant

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Outlook of Energy Storage via Large-Scale Entrained-Flow Coal Gasification

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Engineering 2023年第10期29卷 50-54页

作者： Zhongjie Shen Junguo Li Haifeng Liu National Energy Coal Gasification Technology Research and Development Center East China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center of Coal Gasification East China University of Science and TechnologyShanghai 200237China School of Innovation and Entrepreneurship Southern University of Science and TechnologyShenzhen 518055China

*** The decarbonization of the energy sector,which greatly relies on fossil-fuel energy,requires urgent action on a global scale to reduce carbon emissions to a net-zero state and to mitigate the effects of climate change[1,2].With a multi-level global energy transition already underway,there is an inevitable trend to use renewable energy to replace traditional fossil-fuel energy.

关键词： Outlook Storage Flow

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Bamboo-derived hard carbon/carbon nanotube composites as anode material for long-life sodium-ion batteries with high charge/discharge capacities

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Rare Metals 2024年第1期43卷 124-137页

作者： Sukanya Pothaya Chatwarin Poochai Nantikan Tammanoon Yaowamarn Chuminjak Tanaporn Kongthong Tanom Lomas Chakrit Sriprachuabwong Adisorn Tuantranont Graphene and Printed Electronics for Dual-Use Applications Research Division(GPERD) National Security and Dual-Use Technology Center(NSD)National Science and Technology Development Agency(NSTDA)Tambon Klong NuengAmphoe Klong LuangPathum Thani 12120Thailand

Hard carbon derived from bamboo for the anode material of sodium-ion batteries has a three-dimensional(3D) open framework structure and has naturally incorporated K-ions into its carbon structure,increasing the dinterlayer spacing of hard carbon materials for facilitating Na^(+) *** this work,bamboo-derived hard carbon was prepared via two carbonization temperatures at 700and 1000 ℃ for an hour and employed as an anode for sodium-ion batteries(SIB).X-ray diffraction(XRD) and Fourier transform(FT)-Raman spectroscopic results indicated the disordered structure with d-spacing(d_(002)) around0.36-0.37 nm,which is a benefit for sodium ion insertion/***,the composition between carbon-nanotube(CNT) and bamboo-derived hard carbon(BB) was synthesized by a ball mill with various contents of CNT(1 wt%,5 wt% and 10 wt%).At the optimal CNT content of 5 wt%,the sample exhibited excellent performance and outstanding *** the anode,the half-cell SIB using BB(700)w@5%CNT(with a carbonization temperature of700 ℃ and CNT loading of 5 wt%) delivered a high initial specific capacity of 268.9 mAh·g^(-1) at 0.1C and capacity retention of 78.6% after 500 cycles at *** full cell SIB fabrication BB(700)w@5%CNT in combination with Na_(3)V_(2)(PO4)_(3) as the cathode demonstrated a high specific capacity of 127.6 mAh·g^(-1) at 0.2C with its capacitive retention remaining of 78% at 1.0C after 1000 *** attained storage performance indicates that hard carbonCNT composite anode material enhanced the conductive path of electron transport and provided long-term cycling *** good electrochemical performance as well as the low cost and environment-friendliness of the bambooderived hard carbon proves its suitability for future sodium-ion batteries.

关键词： Hard carbon Bamboo Sodium-ion battery(SIB) Full cell

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