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Preparation,Structure,Fluorescence,Semiconductor Properties and TDDFT Calculation of a Mononuclear Zinc Complex with Mixed Ligands

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Chinese Journal of Structural Chemistry 2020年第3期39卷 551-558,379页

作者： LI Jia shi lian-shui YI Xiu-Guang FANG Xiao-Niu GUO Ting LI Yong-Xiu School of Chemistry and Chemical Engineering Jinggangshan UniversityJi'an 343009China School of Chemistry Nanchang UniversityNanchang 330000China School of Stomatology Nanchang UniversityThe Key Laboratory of Oral BiomedicineNanchang 330000China

A novel zinc complex[ZnL(bipy)(H2O)]×H2O with mixed ligands of 3-hydroxy-2-methylquinoline-4-carboxylic acid(HL)and bipy(bipy=2,2'-bipyridine)was synthesized by solvothermal reaction and its crystal structure was determined by single-crystal X-ray diffraction *** title compound crystallizes in the orthorhombic system of Pbca space group,and exists as an isolated mononuclear *** intermolecular hydrogen bonds and strongπ…πstacking interactions form a three-dimensional(3-D)supramolecular ***-state photoluminescence spectrum reveals that it shows an emission in the blue region of the light ***-dependent density functional theory(TDDFT)calculations reveal that this emission can be attributed to ligand-to-ligand charge transfer(LLCT).Solid-state diffuse reflectance data show that there is a narrow optical band gap of 1.83 eV.

关键词： crystal structure photoluminescence semiconductor TDDFT LLCT

Application-driven development of a thermal imaging-based cabin occupant thermal sensation assessment model and its validation

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Building Simulation 2024年第8期17卷 1401-1417页

作者： Junmeng Lyu Yuxin Yang Yongxiang shi Zhiwei lian Department of Architecture School of DesignShanghai Jiao Tong UniversityShanghaiChina

The air conditioning(A/C)of cabins allows for customized control,but manual adjustments may distract drivers,as well as result in energy *** existing thermal sensation models require complex inputs,which are challenging to gather whilst *** address this issue,this study developed a non-contact thermal sensation model for cabin occupants based on thermal imaging *** collect actual data used for modeling,an outdoor subject experiment was *** this study,initial training was conducted to compare the performance of six algorithms in building the model,with random forests algorithm showing the best ***,this study employed the recursive feature elimination(RFE)method with cross-validation algorithm for identifying the key *** the end,the model was retrained using the selected *** model that incorporated both environmental parameters and facial-temperature features demonstrated the best performance,with an R2 of 0.659 on the test *** the hard-to-measure windshield surface temperature resulted in a slight reduction in accuracy,yielding an R2 of *** verify the generalizability of the model,this study further conducted independent validation *** selected model,which exhibited a mean absolute error(MAE)of less than 0.4 in thermal sensation units,was proven to be highly *** results can offer new solutions for automatic control of cabin A/C.

关键词： model assessment thermal imaging vehicle air conditioner thermal sensation transient cabin indoor environment

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

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镀金对金属全冠固位力的影响

华西口腔医学杂志 2008年第5期26卷 503-504,525页

作者：张小军石连水朱洪水南昌大学附属口腔医院修复科江西南昌330006

目的探讨镀金技术对非贵金属全冠固位力的影响。方法将60个镍铬合金全冠随机分为3组,每组20个。对照组喷砂后不作处理,部分镀金组在内冠颈缘1.3mm范围内镀金,全冠镀金组的内冠全部镀金。将全冠用玻璃离子与底座黏固后,在Instron万能材... 详细信息

目的探讨镀金技术对非贵金属全冠固位力的影响。方法将60个镍铬合金全冠随机分为3组,每组20个。对照组喷砂后不作处理,部分镀金组在内冠颈缘1.3mm范围内镀金,全冠镀金组的内冠全部镀金。将全冠用玻璃离子与底座黏固后,在Instron万能材料力学实验机上测量固位力,对3组之间的固位力进行统计分析。结果对照组、部分镀金组、全冠镀金组的固位力分别为(657±151)N、(632±139)N、(569±103)N。对照组与全冠镀金组、全冠镀金组与部分镀金组固位力之间的差异有统计学意义(P0.05)。结论镍铬合金全冠镀金后固位力会有所下降,但仍能满足临床上的固位要求。部分镀金全冠固位力虽有所下降,但可忽略不计。

关键词：镍铬合金镀金金属全冠固位

Residual subsidence time series model in mountain area caused by underground mining based on GNSS online monitoring

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International Journal of Coal Science & Technology 2024年第2期11卷 173-186页

作者： Xugang lian Lifan shi Weiyu Kong Yu Han Haodi Fan School of Mining Engineering Taiyuan University of TechnologyTaiyuanChina

The residual subsidence caused by underground mining in mountain area has a long subsidence duration time and great potential harm,which seriously threatens the safety of people's production and life in the mining ***,it is necessary to use appropriate monitoring methods and mathematical models to effectively monitor and predict the residual subsidence caused by underground *** with traditional level survey and InSAR(Interferometric Synthetic Aperture Radar)technology,GNSS(Global Navigation Satellite System)online monitoring technology has the advantages of long-term monitoring,high precision and more flexible monitoring *** empirical equation method of residual subsidence in mining subsidence is effectively combined with the rock creep equation,which can not only describe the residual subsidence process from the mechanism,but also predict the residual ***,based on GNSS online monitoring technology,combined with the mining subsidence model of mountain area and adding the correlation coefficient of the compaction degree of caving broken rock and the Kelvin model of rock mechanics,this paper constructs the residual subsidence time series model of arbitrary point on the ground in mountain *** the example,the predicted results of the model in the inversion parameter phase and the dynamic prediction phase are compared with the measured data *** results show that the model can carry out effective numerical calculation according to the GNSS monitoring data of any point on the ground,and the model prediction effect is good,which provides a new method for the prediction of residual subsidence in mountain mining.

关键词： Underground mining in mountain area Residual subsidence GNSS online monitoring Mathematical model Subsidence prediction

3种新型复合树脂材料耐磨性及硬度的体外研究

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华西口腔医学杂志 2008年第1期26卷 15-18页

作者：王立凯石连水朱洪水南昌大学附属口腔医院修复科江西南昌330006

目的评价3种新型复合树脂材料的耐磨性及硬度。方法选取Solidex、Spectrum、FiltekTM Z350新型复合树脂材料为研究对象,对照组为釉质。在改装的MG-200型摩擦磨损实验机上进行磨损实验。扫描电镜观察摩擦表面形貌。用维氏硬度仪测量4种... 详细信息

目的评价3种新型复合树脂材料的耐磨性及硬度。方法选取Solidex、Spectrum、FiltekTM Z350新型复合树脂材料为研究对象,对照组为釉质。在改装的MG-200型摩擦磨损实验机上进行磨损实验。扫描电镜观察摩擦表面形貌。用维氏硬度仪测量4种样本的维氏硬度。用秩和检验和单因素方差分析对磨损量和硬度值进行统计分析。通过直线回归分析的方法来分析3种复合树脂磨损量与硬度的相关性。结果3种复合树脂材料中,FiltekTM Z350显示了最低的磨损量和最高的维氏硬度(P0.05)。3种复合树脂材料的磨损量与硬度间存在显著的相关性(r=-0.9686)(P<0.05)。扫描电镜下各材料的摩擦表面形貌显示了不同的磨损特征。结论纳米填料复合树脂的耐磨性及硬度优于混合填料复合树脂。

关键词：复合树脂填料耐磨性硬度

Recyclable High-performance Carbon Fiber Reinforced Epoxy Composites Based on Dithioacetal Covalent Adaptive Network

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Chinese Journal of Polymer Science 2024年第10期42卷 1514-1524,I0011页

作者： Gui-lian shi Ting-Cheng Li Dao-Hong Zhang Jun-Heng Zhang Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSouth-Central Minzu UniversityWuhan430074China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430200China Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei UniversityWuhan430062Chin

Recycling of carbon fiber reinforced composites is important for sustainable development and the circular *** the use of dynamic chemistry,developing high-strength recyclable CFRPs remains a major challenge due to the mutual exclusivity between the dynamic and mechanical properties of ***,we developed a high-strength recyclable epoxy resin(HREP)based on dynamic dithioacetal covalent adaptive network using diglycidyl ether bisphenol A(DGEBA),pentaerythritol tetra(3-mercapto-propionate)(PETMP),and vanillin epoxy resin(VEPR).At high temperatures,the exchange reaction of thermally activated dithioacetals accelerated the rearrangement of the network,giving it significant reprocessing ***,HREP exhibited excellent solvent resistance due to the increased cross-linking *** this high-strength recyclable epoxy resin as the matrix and carbon fiber modified with hyperbranched ionic liquids(HBP-AMIM+PF6-)as the reinforcing agent,high performance CFRPs were successfully *** tensile strength,interfacial shear strength(IFSS)and interlaminar shear strength(ILSS)of the optimized formulation(HREP20/CF-HBPPF6)were 1016.1,70.8 and 76.0 MPa,*** addition,the CFRPs demonstrated excellent solvent and acid/*** CFRPs could completely degrade within 24 h in DMSO at 140℃,and the recycled CF still maintained the same tensile strength and ILSS as the original after multiple degradation cycles.

关键词： Epoxy resin Hyperbranched ionic liquid Recycling Carbon fiber Composites

Meiotic nuclear divisions 1 suppresses the proliferation and invasion of pancreatic cancer cells via regulating H2A.X variant histone

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BIOCELL 2024年第1期48卷 111-122页

作者： DONGQIN WANG YAN shi ZHIQIANG WANG JING ZHANG LUYAO WANG HONGYU MA SHUHUA shi XIAOFU lian HUA HUANG XIAOJING WANG CHAOQUN lian Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease Molecular Diagnosis CenterThe Department of Pulmonary Critical Care MedicineFirst Affiliated Hospital of Bengbu Medical CollegeBengbu233030China Department of Genetics School of Life SciencesBengbu Medical CollegeBengbu233000China Department of Clinical Medicine Bengbu Medical CollegeBengbu233030China Research Center of Clinical Laboratory Science Bengbu Medical CollegeBengbu233030China

Introduction:Among all malignant tumors of the digestive system,pancreatic carcinoma exhibits the highest mortality ***,prevention and effective treatment are urgent issues that need to be ***:The study focused on meiotic nuclear divisions 1(MND1),integrating data from the Gene Expression Profiling Interactive Analysis(GEPIA)database with prognostic survival ***,experiments at cellular level were employed to demonstrate the effect of MND1 on the proliferation and migration of *** small-molecule inhibitor of MND1 was used to suppress the migration of PC cells by knocking down MND1 using small interfering RNA(siRNA)in Patu-8988 and Panc1 cell ***:The results of Cell Counting Kit-8 indicated that the suppression of MND1 resulted in a decrease in cell *** healing and Transwell assays revealed that MND1 knockdown reduced cell migration and *** cytometry revealed that inhibiting MND1 hindered the cell ***,MND1 could stimulate the proliferation,migration,and invasion of Patu-8988 and Panc1 cells by increasing the expression of ***,MND1 had a positive effect on H2AFX expression in PC *** MND1 expression suggests the low overall survival rate of individuals diagnosed with ***:These findings suggest that MND1 has the potential to be a gene with the ability to accurately diagnose and treat PC.

关键词： Pancreatic carcinoma MND1 H2AFX Cell cycle

Design of High Performance MXene/Oxide Structure Memristors for Image Recognition Applications

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Chinese Journal of Electronics 2024年第2期33卷 336-345页

作者： Xiaojuan lian Yuelin shi Xinyi SHEN Xiang WAN Zhikuang CAI Lei WANG The College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications The National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing University of Posts and Telecommunications

Recent popularity to realize image recognition by memristor-based neural network hardware systems has been witnessed owing to their similarities to neurons and ***,the stochastic formation of conductive filaments inside the oxide memristor devices inevitably makes them face some drawbacks,represented by relatively higher power consumption and severer resistance switching *** this work,we design and fabricate the Ag/MXene（Ti3C2）/SiO2/Pt memristor after considering the stronger interactions between Ti3C2and Ag ions,which lead to a Ti3C2/SiO2structure memristor owning to much lower "SET" voltage and smaller resistance switching fluctuation than pure ***,the conductances of the Ag/Ti3C2/SiO2/Pt memristor have been modulated by changing the number of the applied programming pulse,and two typical biological behaviors,i.e.,longterm potentiation and long-term depression,have been ***,device conductances are introduced into an integrated device-to-algorithm framework as synaptic weights,by which the MNIST hand-written digits are recognized with accuracy up to 77.39%.

关键词： Performance evaluation Silicon compounds Image recognition Power demand Memristors Switches Programming