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Dual-functional Cu_(2)O/g-C_(3)N_(4) heterojunctions: a high-performance SERS sensor and photocatalytic self-cleaning system for water pollution detection and remediation

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Microsystems & Nanoengineering 2024年第6期10卷 325-340页

作者： Shuo Yang Kaiyue Li Ping Huang Keyan Liu Wenhui Li Yuquan Zhuo Ziwen Yang Donglai Han School of Materials Science and Engineering Changchun University130022 ChangchunChina Laboratory of Materials Design and Quantum Simulation College of Science Changchun University 130022 ChangchunChina School of Materials Science and Engineering Changchun University of Science and Technology130022 ChangchunChina

This study introduces a multifunctional device based on Cu_(2)O/g-C_(3)N_(4) monitoring and purification p–n heterojunctions(MPHs),seamlessly integrating surface-enhanced Raman scattering(SERS)detection with photocatalytic degradation *** SERS and photocatalytic performances of the Cu_(2)O in various morphologies,g-C_(3)N_(4) nanosheets(NSs)and Cu_(2)O/g-C_(3)N_(4) MPHs with different g-C_(3)N_(4) mass ratios were systematically evaluated,with a particular emphasis on the Cu_(2)O/g-C_(3)N_(4)-0.2 MPH,where g-C_(3)N_(4) constituted 20%of the total *** optical and electrochemical tests revealed that the Cu_(2)O/g-C_(3)N_(4)-0.2 MPH effectively enhances charge separation and reduces charge transfer *** Cu_(2)O/g-C_(3)N_(4)-0.2 SERS sensor exhibited a relative standard deviation(RSD)below 15%and achieved an enhancement factor(EF)of 2.43×106 for 4-ATP detection,demonstrating its high sensitivity and ***,it demonstrated a 98.3%degradation efficiency for methyl orange(MO)under visible light within 90 ***,even after 216 days,its photocatalytic efficiency remained at 93.7%,and it retained an 84.0%efficiency after four *** and SEM analyses before and after cycling,as well as after 216 days,confirmed the structural and morphological stability of the composite,demonstrating its cyclic and long-term *** excellent performance of the Cu_(2)O/g-C_(3)N_(4) MPH is attributed to its Z-type mechanism,as verified by radical trapping *** evaluation of the self-cleaning performance of the Cu_(2)O/g-C_(3)N_(4)-0.2 SERS sensor demonstrated that its Z-scheme structure not only provides excellent self-cleaning capability but also enables the detection of both individual and mixed pollutants,while significantly enhancing the SERS signal response through an effective charge transfer enhancement mechanism.

关键词： mechanism stability performance

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A Soft Robotic Fish Actuated by Artificial Muscle Modules(SoRoFAAM-1)

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Journal of Bionic Engineering 2023年第5期20卷 2030-2043页

作者： Moise Raphael Tsimbo Fokou Qirong Xia Hu Jin Min Xu Erbao Dong CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefei230026China

In this paper,we present the design,fabrication,locomotion and bionic analysis of a Soft Robotic Fish Actuated by Artificial Muscle(SoRoFAAM).As a carangiform swimmer,the most important part of SoRoFAAM-1,on the motion point of view,is its tail designed around a bidirectional flexible bending actuator by layered bonding *** actuator is made of two artificial muscle modules based on Shape Memory Alloy(SMA)*** artificial muscle module has four independent SMA-wire channels and is therefore capable of producing four different *** design allows us to implement an adaptive regulated control strategy based on resistance feedback of the SMA wires to prevent them from *** improve the actuation frequency to 2 Hz and the heat-dissipation ratio by 60%,we developed a round-robin heating ***,the thermomechanical model of actuator is built,and the thermal transformation is *** relationships between the actuation parameters and SoRoFAAM-1’s kinematic parameters are *** versatility of the actuator endows SoRoFAAM-1 with cruise straight and turning ***,SoRoFAAM-1 has a good bionic fidelity;in particular,a maneuverability of 0.15,a head swing factor of 0.38 and a Strouhal number of 0.61.

关键词： Soft robotic fish Artificial muscle Shape memory alloy Head swing factor Maneuverability Bionic fidelity

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NADPHnet:a novel strategy to predict compounds for regulation of NADPH metabolism via network-based methods

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中国药理学报（英文版） 2024年第10期45卷 2199-2211页

作者： Fei Pan Cheng-nuo Wang Zhuo-hang Yu Zeng-rui Wu Ze Wang Shang Lou Wei-hua Li Gui-xia Liu Ting Li Yu-zheng Zhao Yun Tang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism Shanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and TechnologyShanghai 200237China

Identification of compounds to modulate NADPH metabolism is crucial for understanding complex diseases and developing effective ***,the complex nature of NADPH metabolism poses challenges in achieving this *** this study,we proposed a novel strategy named NADPHnet to predict key proteins and drug-target interactions related to NADPH metabolism via network-based *** from traditional approaches only focusing on one single protein,NADPHnet could screen compounds to modulate NADPH metabolism from a comprehensive ***,NADPHnet identified key proteins involved in regulation of NADPH metabolism using network-based methods,and characterized the impact of natural products on NADPH metabolism using a combined score,*** demonstrated a broader applicability domain and improved accuracy in the external validation *** approach was further employed along with molecular docking to identify 27 compounds from a natural product library,6 of which exhibited concentration-dependent changes of cellular NADPH level within 100μM,with Oxyberberine showing promising effects even at 10 μ*** and pathological analyses of Oxyberberine suggest potential novel mechanisms to affect diabetes and ***,NADPHnet offers a promising method for prediction of NADPH metabolism modulation and advances drug discovery for complex diseases.

关键词： NADPH metabolism network-based inference natural product computational prediction

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Hierarchical Voronoi Structure Inspired by Cat Paw Pads Substantially Enhances Landing Impact Energy Dissipation

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Journal of Bionic Engineering 2024年第4期21卷 1847-1861页

作者： Da Lu Baoqing Pei Yangyang Xu Mengyuan Hu Shijia Zhang Le Zhang Xin Huang Yangwei Wang Xueqing Wu Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable&Interventional Medical Devices Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang University100083BeijingChina National Key Laboratory of Science and Technology on Materials under Shock and Impact Beijing Institute of Technology100081BeijingChina Shenzhen Institute of Beihang University 518000ShenzhenChina

When a human lands from a high drop,there is a high risk of serious injury to the lower *** the other hand,cats can withstand jumps and falls from heights without being fatally wounded,largely due to their impact-resistant paw *** aim of the present study was to investigate the biomechanism of impact resistance in cat paw pads,propose an optimal hierarchical Voronoi structure inspired by the paw pads,and apply the structure to bionic cushioning shoes to reduce the impact force of landing for *** microstructure of cat paw pads was observed via tissue section staining,and a simulation model was reconstructed based on CT to verify and optimize the structural cushioning *** distribution pattern,wall thickness of compartments,thickness ratio of epidermis and dermis,and number of compartments in the model were changed and simulated to achieve an optimal composed structure.A bionic sole was 3D-printed,and its performance was evaluated via compression test and a jumping-landing *** results show that cat paw pads are a spherical cap structure,divided from the outside to the inside into the epidermis,dermis,and compartments,each with different cushioning capacities.A finite element simulation of different cushioning structures was conducted in a cylinder with a diameter of 20 mm and a height of 10 mm,featuring a three-layer *** optimal configuration of the three layers should have a uniform distribution with 0.3–0.5 mm wall thickness,a 1:1–2 thickness ratio of epidermis and dermis,and 100–150 compartments.A bionic sole with an optimized structure can reduce the peak impact force and delay the peak arrival *** energy absorption rate is about 4 times that of standard *** jumping 80,100,and 120 cm,the normalized ground reaction force is also reduced by 8.7%,12.6%and 15.1%compared with standard *** study provides theoretical and technical support for effective protection against human lower limb landing injuries.

关键词： Cat paw pads Hierarchical Voronoi structure Landing impact Energy dissipation Bionic sole

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Magnetically responsive manipulation of droplets and bubbles

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Droplet 2024年第2期3卷 73-94页

作者： Shaojun Jiang Dong Wu Jiawen Li Jiaru Chu Yanlei Hu CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefeiChina

Droplets and bubbles have a wide range of applications in industry,agriculture,and daily life,and their controllable manipulation is of significant scientific and technological *** magnetically responsive manipulation strategies have been developed to achieve precise control over droplets and *** manipulate nonmagnetic droplets or bubbles with magnetic fields,the presence of magnetic medium is *** additives can be added to the surface or interior of droplets and bubbles,allowing for on-demand manipulation by direct magnetic ***,magnetically responsive elastomer substrates can be used to actuate droplets and bubbles by controlling the deformation of microstructures on the substrates through magnetic *** strategy is based on untethered magnetic devices,which enables free mobility,facilitating versatile manipulation of droplets and bubbles in a flexible *** paper reviews the advances in magnetically responsive manipulation strategies from the perspective of droplets and *** overview of the different classes of magnetic medium,along with their respective corresponding droplet/bubble manipulation methods and principles,is first ***,the applications of droplet/bubble manipulation in biomedicine,microchemistry,and other fields are ***,the remaining challenges and future opportunities related to regulating droplet/bubble behavior using magnetic fields are discussed.

关键词： deformation bubble versatile

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Determining the nuclear temperature dependence on source neutron-proton asymmetry in heavy-ion reactions at intermediate energy

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Chinese Physics C 2023年第5期47卷 152-159页

作者：曲国峰黄宇郑华刘星泉 R.Wada 林炜平黄美容韩纪锋任培培杨振雷张鑫冷强钟 Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan UniversityChengdu 610064China Institute of Nuclear Science and Technology Sichuan UniversityChengdu 610064China School of Physics and Information Technology Shaanxi Normal UniversityXi'an 710119China Cyclotron Institute Texas A&M UniversityCollege StationTexas 77843USA College of Physics and Electronics information Inner Mongolia University for NationalitiesTongliao 028000China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610213China

In this article,we investigate the dependence of nuclear temperature on emitting source neutron-proton(N/Z)asymmetry with light charged particles(LCPs)and intermediate mass fragments(IMFs)generated from intermediate-velocity sources in thirteen reaction systems with different N/Z asymmetries,^(64)Zn on^(112)Sn,and^(70)Zn,^(64)Ni on^(112,124)Sn,^(58,64)Ni,^(197)Au,and^(232)Th at 40 MeV/*** apparent temperature values of LCPs and IMFs from different systems are deduced from the measured yields using two helium-related and eight carbon-related double isotope ratio thermometers,***,the sequential decay effect on the experimental apparent temperature deduction with the double isotope ratio thermometers is quantitatively corrected explicitly with the aid of the quantum statistical *** present treatment is an improvement compared to our previous studies in which an indirect method was adopted to qualitatively consider the sequential decay effect.A negligible N/Z asymmetry dependence of the real temperature after the correction is quantitatively addressed in heavy-ion reactions at the present intermediate energy,where a change of o.1 units in source N/Z asymmetry corresponds to an absolute change in temperature of an order of 0.03 to 0.29 MeV on average for LCPs and *** conclusion is in close agreement with that inferred qualitatively via the indirect method in our previous studies.

关键词： nuclear temperature N/Z asymmetry dependence Albergo thermometer sequential decay correction heavy-ion reactions at intermediate energy

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Decoupling and Coupling Simulation Analysis in Small Nuclear Power Plant 23rd

Decoupling and Coupling Simulation Analysis in Small Nuclear...

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23rd Pacific Basin Nuclear Conference, PBNC 2022

作者： Tian, Peiyu Li, Yi Xing, Tianyang Liang, Tiebo Wang, Changshuo Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Sichuan Chengdu China School of Energy and Environment Southeast University Jiangsu Nanjing China

ISBN: (纸本)9789819910229

As the development of computer science technology and the requirement of thorough research, more researchers are setting their eyes on coupling method because of the tight coupling in NPP (nuclear power plant) system. However there were few researches studying the difference between decoupling and coupling methods and the importance of coupling method. This research respectively establishes the primary and secondary loop decoupling models and the two loops coupling model based on the small NPP by APROS. Then the differences between the decoupling and coupling models is studied under the steady state and dynamic state which contains the ramp load variation and load shedding. The results show that there are small differences between these models in the main parameter values under the steady state. But the differences between decoupling models and coupling model are large. Therefore the NPP system needs be modeled by coupling method as to study its dynamic characteristic. © 2023, The Author(s).

关键词： Nuclear power plants

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NUMERICAL INVESTIGATION ON DIRECT CONTACT CONDENSATION CHARACTERISTICS OF STEAM INJECTION INTO COLD-WATER PIPE UNDER HEAVING CONDITION 30

NUMERICAL INVESTIGATION ON DIRECT CONTACT CONDENSATION CHARA...

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30th International Conference on Nuclear Engineering, ICONE 2023

作者： Wang, Zhiwei He, Yanping Duan, Zhongdi Huang, Chao Liu, Shiwen State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai200240 China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

ISBN: (纸本)9784888982566

Direct contact condensation (DCC) is widely appeared in the nuclear power plants and will lead to serious temperature and pressure fluctuations. For ocean nuclear power plants, the DCC is inevitably affected by the sea conditions, such as rolling, heaving motion. In this study, the integration of volume of fluid model (VOF) and condensation model is adopted to simulate the DCC characteristics under heave conditions. The interfacial heat and mass transfer are calculated by user-defined functions (UDF). The additional inertial force method is used to describe the heave motion. First, the DCC numerical model under heave motion is validated by the experimental data, which coincides well with the experiment results. Then, the characteristics of DCC under different heave parameters are numerically studied. The results show that the average condensation rate increases with an increase in heave amplitude, decreases with an increase in heave period. This is mainly because the heave motion will cause the liquid phase to impact the upper pipe wall, and increasing the contact area of vapor and subcooled water. The pressure oscillations induced by DCC are more complicated under heaving conditions. With heave period continuing to change, the formation mechanisms of the pressure peak are different. When the heave period is relatively small, the pressure peak is mainly induced by the acceleration of water phase under high frequency heaving motion. With an increase in the heave period, the heaving motion accelerated the formation of isolated steam bubble, and caused the condensation induced water hammer (CIWH) events, which in turn induced the pressure peak. In addition, the pressure peak is proportional to the heave amplitude. In summary, the direct contact condensation characteristics are more sensitive to the heave period under heaving conditions. These qualitative conclusions may serve as a reference for direct contact condensation simulations under heaving conditions. © 2023 by

关键词： Nuclear power plants

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A hybrid physics-data-driven surface roughness prediction model for ultra-precision machining

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science China(Technological sciences) 2023年第5期66卷 1289-1303页

作者： BAI Long YANG QiZhong CHENG Xin DING Yue XU JianFeng State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China Wuhan Digital Design and Manufacturing Innovation Center Co. LtdWuhan430074China

The surface finish quality is critical to the service performance of a machined part,and single-point diamond ultra-precision machining can achieve excellent surface quality for many engineering *** study studied the problem of predicting the surface roughness for titanium alloy workpieces in ultra-precision *** data and surface roughness measurement results were obtained during end-face machining experiments.A deep learning neural network model was built based on the ResNet-50 architecture to predict surface *** propose increasing prediction accuracy by using the energy ratio difference(ERD)as a stability feature that can be extracted using fast iterative variational mode decomposition(FI-VMD).The roughness value obtained with an analytic model was also used as an input feature of the prediction *** prediction accuracy of the proposed approach was depicted to be improved by 8.7%with the two newly introduced roughness *** influence of the tool parameters on the prediction accuracy was investigated,and the proposed hybrid-driven model exhibited higher robustness to errors of the tool parameters than the analytic roughness model.

关键词： surface roughness ultra-precision machining prediction model stability feature

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Transcriptome analysis reveals the genetic basis of crest cushion formation in duck

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Journal of Integrative Agriculture 2024年第12期23卷 4172-4185页

作者： Lan Huang Qixin Guo Yong Jiang Zhixiu Wang Guohong Chen Guobin Chang Hao Bai Joint International Research Laboratory of Agriculture and Agri-Product Safety Ministry of Education/Institutes of Agricultural Science and Technology DevelopmentYangzhou UniversityYangzhou 225009China Key Laboratory of Animal Genetics and Breeding and Molecular Design of Jiangsu Province College of Animal Science and TechnologyYangzhou UniversityYangzhou 225009China

The Chinese crested duck is a unique duck breed having a bulbous feather shape on its duck ***,the mechanisms involved in its formation and development are *** the present study,RNA sequencing analysis was performed on the crested tissues of 6 Chinese crested ducks and the scalp tissues of 6 cherry valley ducks(CVs)from 2 developmental *** study identified 261 differentially expressed genes(DEGs),122 upregulated and 139 downregulated,in the E28 stage and 361 DEGs,154 upregulated and 207 downregulated in the D42 stage between CC and CV *** subsequent results of weighted gene co-expression network analysis(WGCNA)revealed that the turquoise and cyan modules were associated with the crest trait in the D42 stage,meanwhile,the green,brown,and pink modules were associated with the crest trait in the E28 *** analysis of the DEGs and WGCNA showed that 145 and 45 genes are associated between the D42 and E28 stages,*** expression of WNT16,BMP2,SLC35F2,SLC6A15,APOBEC2,ABHD6,TNNC2,MYL1,and TNNI2 were verified by real-time quantitative *** study provides an approach to reveal the molecular mechanisms underlying the crested trait development.

关键词： crested duck RNA-sequencing weighted gene co-expression network analysis differentially expressed genes

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