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Chinese Journal of Chemical Engineering 2024年第5期69卷 1-12页

作者： Zhekun chen Weitong Pan Longfei Tang xueli chen Fuchen Wang Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality Ministry of EducationEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Pressure Systems and Safety Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

Ensuring the consistency of electrode structure in proton-exchange-membrane fuel cells is highly desired yet challenging because of wide-existing and unguided cracks in the microporous layer(MPL). The first thing is to evaluate the homogeneity of MPL with cracks quantitatively. This paper proposes the homogeneity index of a full-scale MPL with an area of 50 cm~2, which is yet to be reported in the literature to our knowledge. Besides, the effects of the carbon material and surfactant on the ink and resulting MPL structure have been studied. The ink with a high network development degree produces an MPL with low crack density, but the ink with high PDI produces an MPL with low crack homogeneity. The polarity of the surfactant and the non-polarity of polytetrafluoroethylene(PTFE) are not mutually soluble,resulting in the heterogeneous PTFE distribution. The findings of this study provide guidelines for MPL fabrication.

关键词： Proton-exchange-membrane fuel cell Microporous layer Crack density Crack homogeneity Polytetrafluoroethylene distribution Surfactant

Breakthrough architecture conquers dark current:echoes of Dujiangyan in perovskite photodetectors

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Advanced Photonics 2024年第3期6卷 5-6页

作者： Yujin Liu Zhong Ji xueli chen Xidian University Guangzhou Institute of TechnologyInnovation Center for Advanced Medical Imaging and Intelligent MedicineGuangzhouChina Xidian University School of Life Science and TechnologyCenter for Biomedical-photonics and Molecular ImagingXi’an Key Laboratory of Intelligent Sensing and Regulation of Trans-Scale Life InformationXi’anChina

Metal halide perovskites(MHPs)photodetectors(PDs)exhibiting outstanding and tunable photoelectric properties have attracted extensive global attention owing to their low-temperature solution-processable fabrication,lightweight nature,and flexibility.1However,MHPs-based PDs still face challenges of high and unstable dark current,which limit their operational stability and practical applications.

关键词： unstable perovskite limit

Student Academic Performance Predictive Model Based on Dual-stream Deep Network

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计算机科学 2024年第10期51卷 119-128页

作者： XIE Hui ZHANG Pengyuan DONG Zexiao YANG Huiting KANG Huan HE Jiangshan chen xueli Center for Biomedical-photonics and Molecular Imaging Xi’an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life InformationSchool of Life Science and TechnologyXidian UniversityXi’an 710126China Engineering Research Center of Molecular and Neuro Imaging Ministry of EducationXi’an 710126China Innovation Center for Advanced Medical Imaging and Intelligent Medicine Guangzhou Institute of TechnologyXidian UniversityGuangzhou 510550China

Blended teaching is one of the essential teaching methods with the development of information *** a learning effect evaluation model is helpful to improve students’academic performance and helps teachers to better implement course ***,a lack of evaluation models for the fusion of temporal and non-temporal behavioral data leads to an unsatisfactory evaluation *** meet the demand for predicting students’academic performance through learning behavior data,this study proposes a learning effect evaluation method that integrates expert perspective indicators to predict academic performance by constructing a dual-stream network that combines temporal behavior data and non-temporal behavior data in the learning *** this paper,firstly,the Delphi method is used to analyze and process the course learning behavior data of students and establish an effective evaluation index system of learning behavior with universality;secondly,the Mann-Whitney U-test and the complex correlation analysis are used to analyze further and validate the evaluation indexes;and lastly,a dual-stream information fusion model,which combines temporal and non-temporal features,is *** learning effect evaluation model is built,and the results of the mean absolute error(MAE)and root mean square error(RMSE)indexes are 4.16 and 5.29,*** study indicates that combining expert perspectives for evaluation index selection and further fusing temporal and non-temporal behavioral features that for learning effect evaluation and prediction is rationality,accuracy,and effectiveness,which provides a powerful help for the practical application of learning effect evaluation and prediction.

关键词： Blended teaching Expert perspective indicators Two-stream information fusion model

Experimental and numerical modeling of carbonized biomass gasification: A critical review

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Green Carbon 2024年第2期2卷 176-196页

作者： Kannie Winston Kuttin Haowen Yu Mingming Yang Lu Ding xueli chen Guangsuo Yu Fuchen Wang Institute of Clean Coal Technology East China University of Science and TechnologyShanghai 200237China Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality Ministry of EducationChina Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuanNingxia 750021China

Gasification is one of the most significant and well-researched pathways to produce energy from biomass among the different options *** is a conversion through thermo-chemical process that takes place within a gasifier,with interconnected factors that have an impact on how well the gasifier *** of carbonized biomass,which has a variety of effects on both the gasification process and the final product,is a significant method of producing energy from raw biomass that contains a lot of moisture or has non-homogeneous *** carbonized biomass has the potential to eliminate or significantly reduce tar formation,which is the most difficult aspect of biomass gasifier design and operation,it has not received the attention it merits even though gasification of biomass is a well-known conversion process with extensive research and development spanning all sectors of the *** review gathers and analyzes the growing number of experimental and numerical modeling approaches in gasification of carbonized biomass based on exact conditions such as type of modeling considerations,feedstock,gasifier,and assessed *** study also provides an overview of various models,such as equilibrium and kinetic rate models and numerical simulations of carbonized biomass gasification schemes based on computational fluid dynamics and Aspen Plus,while comparing the modeling approaches and results for each type of models that are described in the ***,this review encompasses a broad variety of technologies,from laboratory reactors to industrial ***,this review offers a brief overview of the modeling decisions that must be taken at the beginning of a modeling research.

关键词： Carbonized biomass Gasification Thermodynamic model Kinetic model Computational fluid dynamics model

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试论在地生长型乡村影像

原生态民族文化学刊 2024年第4期16卷 11-18,153页

作者：李建钦陈学礼西南林业大学经济管理学院昆明650224 云南大学西南边疆少数民族研究中心昆明650091

从乡村影像的生产过程出发,可以把乡村影像分为两类,一类是获得外部资金、设备和技术培训支持的乡村影像,一类是依赖于当地市场和文化驱动而出现的在地生长型乡村影像。拍摄、剪辑、播放设备的普及,是在地生长型乡村影像产生的基础条件... 详细信息

从乡村影像的生产过程出发,可以把乡村影像分为两类,一类是获得外部资金、设备和技术培训支持的乡村影像,一类是依赖于当地市场和文化驱动而出现的在地生长型乡村影像。拍摄、剪辑、播放设备的普及,是在地生长型乡村影像产生的基础条件,市场供求关系让这种乡村影像获得了可持续性。在过去20余年里,在地生长型乡村影像已经成为当地人日常生活和文化习俗中不可缺少的一部分。与那些获得外部资金、设备和技术支持的乡村影像相比,在地生长型乡村影像致力于满足当地人的喜好和需求,是一种嵌入到当地社会文化和日常生活的“活”影像。

关键词：乡村影像参与式影像社区影像村民影像在地生长

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铁、钙氧化物对含油污泥热解特性的影响

华东理工大学学报（自然科学版） 2024年第3期50卷 335-345页

作者：廉腾飞唐龙飞刘霞陈雪莉华东理工大学含碳废弃物资源化零碳利用教育部工程研究中心上海200237

油泥中铁、钙无机物含量较高,对热解产物分布和石油烃脱除的影响不容忽视。采用固定床热解装置,研究了铁、钙氧化物对油泥热解特性的影响。结果表明:当油泥高于500℃热解时,Fe_(2)O_(3)不仅使热解气体中CO和CO_(2)增多,还增加了热解油... 详细信息

油泥中铁、钙无机物含量较高,对热解产物分布和石油烃脱除的影响不容忽视。采用固定床热解装置,研究了铁、钙氧化物对油泥热解特性的影响。结果表明:当油泥高于500℃热解时,Fe_(2)O_(3)不仅使热解气体中CO和CO_(2)增多,还增加了热解油中芳香烃的含量;CaO促进了热解油中长链烃的形成,使热解气体中H2、CH4和C2H4占比增加;在500℃分别添加质量分数为10%的Fe_(2)O_(3)和CaO时,残渣中石油烃质量分数分别下降到1.87%和1.94%。

关键词：油田含油污泥固定床热解铁、钙氧化物石油烃脱除作用机理

原发性骨肉瘤手术患者术中输血相关高危影响因素的分析

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中国卫生标准管理 2024年第12期15卷 166-169页

作者：张燕陈雪莉聊城市中医医院手术室山东聊城252000 聊城市人民医院手术室山东聊城252000

目的探讨原发性骨肉瘤手术患者术中输血相关的高危影响因素。方法回顾性分析聊城市中医医院2016年4月—2023年5月收治的108例原发性骨肉瘤手术患者的临床资料。按照术中输血情况分为2组,34例术中输血患者作为输血组,74例术中未输血患者... 详细信息

目的探讨原发性骨肉瘤手术患者术中输血相关的高危影响因素。方法回顾性分析聊城市中医医院2016年4月—2023年5月收治的108例原发性骨肉瘤手术患者的临床资料。按照术中输血情况分为2组,34例术中输血患者作为输血组,74例术中未输血患者作为未输血组。统计患者在围手术期的输血情况,收集患者的一般资料、术前血常规、凝血资料、临床病理资料以及手术相关资料等,先后采取单因素以及多因素logistic回归分析影响原发性骨肉瘤手术患者术中输血相关的高危影响因素。结果输血组的主要输血成分为悬浮红细胞,输入血浆量200~800 mL,平均(456.21±25.14)mL;输血量1~3U,平均(1.36±0.96)U。输血组与未输血组的年龄、身体质量指数(body mass index,BMI)、术前血红蛋白(hemoglobin,Hb)、术前红细胞比容(hematocrit,Hct)、术前血小板(platelet,PLT)、术前凝血酶原国际化标准比值(international normalizedratio,INR)、术前纤维蛋白原(fibrinogen,FIB)值、病史、术前是否接受化疗、手术方式、手术操作时间、手术分级、麻醉分级比较,差异无统计学意义(P>0.05)。输血组与未输血组的性别、发病部位、Huvos分级、切口长度、重建长度、术中出血量比较,差异有统计学意义(P<0.05)。logistic回归分析结果显示,性别、发病部位、Huvos分级、切口长度、重建长度、术中出血量可作为影响原发性骨肉瘤患者术中出血的高危因素(P<0.05)。结论原发性骨肉瘤患者术中输血率相对较高,针对影响术中输血较高的因素进行可靠的早期干预,并制定准确的术前备血计划,在保证手术安全的前提条件下则能够明显降低术中输血率。

关键词：术前确定原发性骨肉瘤手术术中输血高危影响因素安全性

Thermodynamic analysis of steam reforming of glycerol for hydrogen production at atmospheric pressure

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Frontiers of Chemical Science and Engineering 2021年第1期15卷 60-71页

作者： Ammaru Ismaila xueli chen Xin Gao Xiaolei Fan Department of Chemical Engineering and Analytical Science School of EngineeringThe University of ManchesterManchester M139PLUK Institute of Clean Coal Technology East China University of Science and TechnologyShanghai 200237China School of Chemical Engineering and Technology National Engineering Research Center of Distillation TechnologyCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin 300072China

Thermodynamic chemical equilibrium analysis of steam reforming of glycerol(SRG)for selective hydrogen production was performed based on the Gibbs free energy minimisation *** ideal SRG reaction(C_(3)H_(8)O_(3)+3H_(2)O→3CO_(2)+7H_(2))and a comprehensive set of side reactions during SRG are considered for the formation of a wide range of ***,this work focused on the analysis of formation of H_(2),CO_(2),CO and CH4 in the gas phase and determination of the carbon free region in SRG under the conditions at atmospheric pressure,600 K–1100 K and 1.013×10^(5)–1.013×10^(6) Pa with the steam-to-glycerol feed ratios(SGFR)of 1:5–*** reaction conditions which favoured SRG for H_(2) production with minimum coke formation were identifies as:atmospheric pressure,temperatures of 900 K–1050 K and SGFR of 10:*** influence of using the inert carrier gas(i.e.,N_(2))in SRG was studied as well at atmospheric *** the presence of N_(2) in the stream decreased the partial pressure of reactants,it was beneficial to improve the equilibrium yield of H_(2).Under both conditions of SRG(with/without inert gas),the CH4 production is minimised,and carbon formation was thermodynamically unfavoured at steam rich conditions of SGFR>5:1.

关键词： steam reforming of glycerol H_(2) N_(2) carbon deposition thermodynamic analysis Gibbs free energy minimisation

Comparative evaluations of the Monte Carlo-based light propagation simulation packages for optical imaging

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Journal of Innovative Optical Health Sciences 2018年第1期11卷 80-89页

作者： Lin Wang Shenghan Ren xueli chen School of Information Sciences and Technology Northwest University Xi'an Shaanxi 710127P.R.China Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education School of Life Science and Technology Xidian University Xi'an Shaanxi 710126P.R.China

Monte Carlo simulation of light propagation in turbid medium has been studied for years.A number of software packages have been developed to handle with such ***,it is hard to compare these simulation packages,especially for tissues with complex heterogeneous ***,we first designed a group of mesh datasets generated by Iso2Mesh software,and used them to cross-validate the accuracy and to evaluate the performance of four Monte Carlo-based simulation packages,including Monte Carlo model of steady-state light transport in multi-layered tissues(MCML),tetrahedron-based inhomogeneous Monte Carlo optical simulator(TIMOS),Molecular Optical Simulation Environment(MOSE),and Mesh-based Monte Carlo(MMC).The performance of each package was evaluated based on the designed mesh *** merits and demerits of each package were also *** results showed that the TIMOS package provided the best performance,which proved to be a reliable,efficient,and stable MC simulation package for users.

关键词： Light transport Monte Carlo comparative evaluation mesh datasets.

基于ASK模型的人文关怀式目标教学法联合OSCE在手术室本科护生中的应用

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循证护理 2024年第4期10卷 689-692页

作者：史艳蕾陈雪莉聊城市人民医院山东252000

目的:探索基于态度、技能、知识的人文关怀体验式目标教学法联合OSCE(objective structured clinical examination, OSCE)考站在手术室本科护生中的应用方法及效果。方法:选择2022年7月—2023年3月在我院实习的95名本科护生分批进入手... 详细信息

目的:探索基于态度、技能、知识的人文关怀体验式目标教学法联合OSCE(objective structured clinical examination, OSCE)考站在手术室本科护生中的应用方法及效果。方法:选择2022年7月—2023年3月在我院实习的95名本科护生分批进入手术室轮转,每批轮转周期为4周,每轮9人或10人。将奇数月进入手术室实习的47名护生设为对照组,采取常规教学方法;偶数月进入手术室实习的48名护生设为观察组,采取基于态度-技能-知识的人文关怀体验式目标教学法,两组护生轮转结束情景模拟甲状腺癌根治术进行OSCE考站出科技能考核,设置术前访视站、入室交接核查站、无菌操作站、手术配合站及应急评估站5个站点,评价两组护生对教学的满意度、OSCE考站总成绩及单站点成绩。结果:观察组教学满意度高于对照组(P0.05)。结论:基于ASK模型的人文关怀体验式目标教学法对手术室本科实习护生教学模式做了进一步改进,提高了护生教学满意度及人文关怀能力。

关键词： ASK模型护理教学实习护生人文关怀 OSCE考站

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