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Science China Technological Sciences 2024年第8期67卷 2413-2426页

作者： chenG LeiLei chen ruizhe ZHU WeiQiang TIAN ShaoNan GU Jing YUAN HaoRan chen Yong Guangzhou Institute of Energy Conversion Chinese Academy of Sciences School of Energy Science and Engineering University of Science and Technology of China Institute of Process Engineering Chinese Academy of Sciences

The hydrogenolysis/hydrocracking of waste polyethylene(PE) has recently been intensively studied, with the general pursuit of low-temperature reaction conditions, increased oil-phase yield, and narrower carbon chain distribution. Before this, we utilized a ball-milled ZSM-22 catalyst loaded with Ru nanoparticles(NPs), which exhibited excellent hydroconversion performance. It deconstructed PE into >80 wt.% oil products under low temperatures and short reaction times. Herein, we investigated the influence of varying temperature/pressure parameters on the degree of specific hydrocracking/internal hydrogenolysis/terminal hydrogenolysis reactions. From the comprehensive energy efficiency perspective, including stirring, reaction, and product separation, as well as taking into account the degree of product isomerization and catalyst lifespan, we analyzed the optimization of parameters. This research abandons the notion that lower temperatures are better and proposes a more comprehensive evaluation framework for low-consumption hydroconversion of PE to produce high-value products.

关键词： plastic upcycling polyethylene hydrocracking hydrogenolysis comprehensive energy efficiency

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基于量子化学计算的正己烷热解反应动力学模拟

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化工进展 2024年第8期43卷 4273-4282页

作者：殷晨阳刘永峰陈睿哲张璐宋金瓯刘海峰北京建筑大学北京市建筑安全监测工程技术研究中心北京102627 天津大学先进内燃动力全国重点实验室天津300072

为研究正己烷(n-C_(6)H_(14))的常压热解特性,提出了正己烷热解(NHP)模型,该模型使用基于误差传播的直接关系图(DRGEP)简化方法和色散校正密度泛函理论的B2PLYP/def2-tzvp方法,得到了一个包含33种物种和134个基元反应的简化机理。利用... 详细信息

为研究正己烷(n-C_(6)H_(14))的常压热解特性,提出了正己烷热解(NHP)模型,该模型使用基于误差传播的直接关系图(DRGEP)简化方法和色散校正密度泛函理论的B2PLYP/def2-tzvp方法,得到了一个包含33种物种和134个基元反应的简化机理。利用该模型计算了n-C_(6)H_(14)在不同温度下主要热解产物乙烯(C_(2)H_(4))、丙烯(C3H6)和丁炔(C4H6)的相对摩尔分数,并对n-C_(6)H_(14)的热解过程进行了反应路径分析。利用同步辐射真空紫外光电离质谱法(SVUV-PIMS)结合射流搅拌反应器(JSR)在温度为673~1103K、压力为1atm条件下对n-C_(6)H_(14)进行了热解实验,并与NHP模型进行了对比分析。结果表明:n-C_(6)H_(14)热解过程中最主要的产物是C_(2)H_(4),促使C_(2)H_(4)生成较为重要的两个反应的指前因子分别为6.01×10^(13)s^(-1)和2.18×10^(13)s^(-1)。在673~1023K温度范围内,结合量子化学计算得到的NHP模型对n-C_(6)H_(14)主要热解产物的相对摩尔分数进行了预测,与JetSurF 2.0模型相比,C_(2)H_(4)和C4H6的最大误差分别减小了27.9%和47.9%。反应路径分析表明,C_(2)H_(4)主要来源于己基的一系列β位断裂。

关键词：正己烷热解计算化学反应动力学同步辐射真空紫外光电离质谱法射流搅拌反应器

综合医院老年出院患者远程健康管理的服务感受现况研究

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数字医学与健康 2024年第2期2卷 91-97页

作者：陈叡喆吴茜葛莉丽李垚同济大学医学院上海200092 温州医科大学附属第一医院手术室温州325000 同济大学附属第十人民医院护理部上海200072 河南大学护理与健康学院开封475004

目的基于服务质量差距模型调查综合医院老年出院患者对远程健康管理的服务感知和期望,确定存在差距的领域,并探索其影响因素,为未来更有针对性地开展远程健康管理服务提供参考。方法采用自编问卷对2022年11月至2023年1月在上海市第十人... 详细信息

目的基于服务质量差距模型调查综合医院老年出院患者对远程健康管理的服务感知和期望,确定存在差距的领域,并探索其影响因素,为未来更有针对性地开展远程健康管理服务提供参考。方法采用自编问卷对2022年11月至2023年1月在上海市第十人民医院(同济大学附属第十人民医院)、上海市东方医院、上海市同济医院和上海市第一人民医院正常出院且符合纳排标准的老年患者进行调查,得到服务感知和期望差距情况,再进行回归分析探索影响因素。结果共回收有效问卷198份,老年出院患者在远程健康管理服务所有维度(有形性、可靠性、响应性、保证性和移情性)上都有差距,其中可靠性维度差距(-6.75)最大,移情性差距(-3.51)最小。经回归分析发现,文化程度是影响老年出院患者远程健康管理服务差距的独立因素,且文化程度越高,差距总分越小(P<0.05)。结论综合医院老年出院患者远程健康管理服务差距较大,目前的远程健康管理服务无法满足老年患者。为弥合差距,服务提供者应从多个角度关注老年患者的实际体验,加强服务和信息安全的管理以及内容的适老性,倾听老年患者的实际需求,逐渐缩小差距。

关键词：服务质量差距模型老年患者健康管理

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高压辊磨机碎磨新工艺国内外研究及应用现状

有色金属（选矿部分） 2024年第5期 24-33页

作者：陈睿哲孙永升刘杰朱一民张迎棋东北大学资源与土木工程学院沈阳110819 新疆有色金属工业(集团)有限责任公司乌鲁木齐830000

高压辊磨机作为国内外选矿领域“多碎少磨”设备和选择性粉碎设备应用的主流,在选矿行业中的应用较为成熟,由于其具备单次处理矿石量大、粉碎效率高、且其粉碎产品粒度细的优点,因此被金属与非金属行业所广泛应用。对高压辊磨机的工作... 详细信息

高压辊磨机作为国内外选矿领域“多碎少磨”设备和选择性粉碎设备应用的主流,在选矿行业中的应用较为成熟,由于其具备单次处理矿石量大、粉碎效率高、且其粉碎产品粒度细的优点,因此被金属与非金属行业所广泛应用。对高压辊磨机的工作原理及粉碎过程进行了简要介绍,结合实际案例对高压辊磨机三种破碎工艺在矿山中的应用及优缺点进行了分析;对高压辊磨机在选矿行业的典型应用进行了介绍;对高压辊磨机新工艺在国内外的应用进行了重点阐述并就新工艺在选矿行业中的应用进行了展望,高压辊磨机联合搅拌磨/塔磨机工艺、高压辊磨机联合风力分级机工艺、两段高压辊磨机串联工艺、两高压辊磨并联工艺以及高压辊接双层振动筛节能降耗优势明显,有望为物料高效粉碎提供新的方案。

关键词：高压辊磨机多碎少磨工作原理工业应用高压辊磨新工艺

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手术室洗手护士非技术技能的知信行调查及其影响因素分析

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护理与康复 2024年第1期23卷 28-32页

作者：陈叡喆吴茜徐敏钱黄静葛莉丽陶秋云温州医科大学附属第一医院浙江温州325000 同济大学附属第十人民医院上海200072 同济大学医学院上海200092

目的调查手术室洗手护士非技术技能知信行的现状并探索其影响因素。方法自行编制手术室洗手护士非技术技能知信行调查问卷,选取江苏、浙江、上海不同医疗机构的132名手术室洗手护士进行问卷调查,并分析其影响因素。结果洗手护士非技术... 详细信息

目的调查手术室洗手护士非技术技能知信行的现状并探索其影响因素。方法自行编制手术室洗手护士非技术技能知信行调查问卷,选取江苏、浙江、上海不同医疗机构的132名手术室洗手护士进行问卷调查,并分析其影响因素。结果洗手护士非技术技能知识维度的总分(67.05±30.73)分,优良率为69.7%,态度维度的总分为(21.52±3.03)分,行为维度的总分(51.30±7.28)分。经多因素分析后,洗手护士非技术技能态度的影响因素主要为年龄(t=2.265,P=0.025)。结论目前手术室洗手护士的非技术技能知信行得分良好,且年龄越大,洗手护士非技术技能态度越好。

关键词：手术室洗手护士非技术技能知信行影响因素

Metal–Organic Gel Leading to Customized Magnetic‑Coupling Engineering in Carbon Aerogels for Excellent Radar Stealth and Thermal Insulation Performances

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Nano-Micro Letters 2024年第3期16卷 36-52页

作者： Xin Li ruizhe Hu Zhiqiang Xiong Dan Wang Zhixia Zhang Chongbo Liu Xiaojun Zeng Dezhi chen Renchao Che Xuliang Nie Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Environmental and Chemical Engineering Nanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Department of Materials Science and Collaborative Innovation Center of Chemistry for Energy Materials and Collaborative Innovation Center of Chemistry for Energy MaterialsFudan UniversityShanghai 200438People’s Republic of China School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403People’s Republic of China College of Chemistry and Materials Jiangxi Agricultural UniversityNanchang 330045People’s Republic of China

Metal–organic gel(MOG)derived composites are promising multi-functional materials due to their alterable composition,identifiable chemical homogeneity,tunable shape,and porous ***,stable metal–organic hydrogels are prepared by regulating the complexation effect,solution polarity and curing ***,collagen peptide is used to facilitate the fabrication of a porous aerogel with excellent physical properties as well as the homogeneous dispersion of magnetic particles during ***,two kinds of heterometallic magnetic coupling systems are obtained through the application of Kirkendall ***/nitrogen-doped carbon(NC)aerogel demonstrates an ultra-strong microwave absorption of−85 dB at an ultra-low loading of 5%.After reducing the time taken by atom shifting,a FeCo/Fe3O4/NC aerogel containing virus-shaped particles is obtained,which achieves an ultra-broad absorption of 7.44 GHz at an ultra-thin thickness of 1.59 mm due to the coupling effect offered by dual-soft-magnetic ***,both aerogels show excellent thermal insulation property,and their outstanding radar stealth performances in J-20 aircraft are confirmed by computer simulation *** formation mechanism of MOG is also discussed along with the thermal insulation and electromagnetic wave absorption mechanism of the aerogels,which will enable the development and application of novel and lightweight stealth coatings.

关键词： Metal-organic gels Heterometallic magnetic coupling Radar stealth Thermal insulation Computer simulation technology

Lightweight foam-like nitrogen-doped carbon nanotube complex achieving highly efficient electromagnetic wave absorption

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Journal of Materials Science & Technology 2024年第1期168卷 114-123页

作者： Zongcheng Li Jin Liang Zhiheng Wei Xin Cao Jiahui Shan Chunwei Li Xiaoyi chen Dong Zhou ruizhe Xing Chunjia Luo Jie Kong MOE Key Lab of Materials Physics and Chemistry in Extraordinary Conditions Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Polymer Materials and Engineering Department School of Materials Science and EngineeringChang’an UniversityXi’an 710064China

With the increased electromagnetic wave(EMW)threat to military and human health,the develop-ment of EMW-absorbing materials is ***-organic framework derivatives containing magnetic nanoparticles and a carbon matrix are potential candidates for designing efficient EMW-absorbing ***,a zeolitic imidazolate framework-67(ZIF-67)-embedded three-dimensional melamine foam is pyrolyzed to afford carbon foam-based nitrogen-doped carbon nanotube composites,named 3D foam-like CoO/Co/*** CoO/Co particles are confined in the dielectric carbon nanotube *** carbon nanotubes provide considerable conductive loss,while CoO/Co magnetic particles are con-ducive to providing magnetic loss and adjusting impedance ***,the numerous defect structures introduced by heteroatomic doping(nitrogen)cause dipole polarization and simultaneously adjust impedance ***,the unique porous nanotube structure promotes multiple re-flections and scattering of EMWs,further optimizing impedance ***/Co/N-CNTs composites exhibit a minimum reflection loss of−52.3 dB at a matching thickness of 2.0 mm,while the correspond-ing effective absorption bandwidth is 5.28 GHz at a matching thickness of 2.2 *** study reports a novel approach to fabricating a lightweight high-performance EMW-absorbing material.

关键词： Lightweight porous carbon materials Carbon nanotubes CoO/Co magnetic particles Electromagnetic synergistic effect Impedance matching

On extended state Kalman filter-based identification algorithm for aerodynamic parameters

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Control Theory and Technology 2024年第2期22卷 235-243页

作者： Wenyan Bai ruizhe Jia Peng Yu Wenchao Xue Beijing Aerospace Automatic Control Institute Beijing100854China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Knowledge Automation for Industrial Processes Ministry of EducationBeijing100083China Key Laboratory of Systems and Control Institute of Systems ScienceAcademy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100190China

In this paper, the problem of time-varying aerodynamic parameters identification under measurement noises is studied. By analyzing the key aerodynamic parameters that affect the aircraft control system, a system model with extended states for identifying equivalent aerodynamic parameters is established, and error parameters are extended to the system state, avoiding the difficulty caused by the unknown dynamic in the system. Furthermore, an identification algorithm based on extended state Kalman filter is designed, and it is proved that the algorithm has quasi-consistency, thus, the estimation error can be evaluated in real time. Finally, the simulation results under typical flight scenarios show that the designed algorithm can accurately identify aerodynamic parameters, and has desired convergence speed and convergence precision.

关键词： Aerodynamic parameters Parameter identification Extended state Kalman filter

Identification of FIR systems under difference-driven scheduled quantized observations

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Control Theory and Technology 2024年第2期22卷 163-172页

作者： Dong Liang ruizhe Jia Fengwei Jing Yong Song Jin Guo School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Knowledge Automation for Industrial Processes Ministry of EducationBeijing100083China National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing University of Science and Technology BeijingBeijing100083China

In networked system identification,how to effectively use communication resources and improve convergence speed is the focus of ***,there is an inherent contradiction between the two *** this paper,the event-driven communication is used to save communication resources for the identification of finite impulse response systems,and the input design is carried out to meet the requirements of convergence ***,a difference-driven communication is ***,the performance of the communication mechanism is analyzed,and the calculation method of its communication rate is *** that,according to the communication rate and the convergence rate of the identification algorithm,the input design problem is transformed into a constrained optimization problem,and the algorithm for finding the optimal solution is *** addition,considering the case that the output is quantized by multiple thresholds,the way to calculate its communication rate is given and the influence of threshold number on communication rate is ***,the effectiveness of the algorithm is verified by simulation.

关键词： System identification FIR system Difference-driven Quantized observation

Mitochondria-localized iridium(Ⅲ) complexes with anthraquinone groups as effective photosensitizers for photodynamic therapy under hypoxia

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Science China Chemistry 2019年第12期62卷 1639-1648页

作者： Song Guo Meiping Han ruizhe chen Yanling Zhuang Liang Zou Shujuan Liu Wei Huang Qiang Zhao Key Laboratory for Organic Electronics&Information Displays Institute of Advanced MaterialsNanjing University of Posts&TelecommunicationsNanjing 210023China Shaanxi Institute of Flexible Electronics Northwestern Polytechnical UniversityXi'an 710072China

Photodynamic therapy(PDT)is a potential way for the tumor ***,it notably suffers the limitation of hypoxia in solid ***,it is significant to develop effective photosensitizers which can exhibit excellent therapeutic performance under both normoxia and ***,we reported four ionic iridium(Ⅲ)complexes(Irl-Ir4)with anthraquinone groups which can regulate their excited state energy levels *** them,the energy gap of Ir1 was between 1.63 and 2.21 eV,which can match well with that of O2,and the HOMO energy of Ir1 is less than-5.51 *** with Ir2-Ir4,the luminescent quantum efficiency of Irl was the ***,Ir1 can specifically target the mitochondria of the tumor ***,Ir1 showed high singlet oxygen quantum yields(Ф△)in both solutions and living cells with low *** results of PDT experiments revealed that Irl,as a photosensitizer,exhibited excellent therapeutic effect not only in normoxia but also in hypoxia *** believe that this work is meaningful for developing excellent PDT agents based on cyclometalated Ir(III)complexes via rational ligand modification.

关键词： photodynamic therapy iridium(Ⅲ)complexes anthraquinone groups photosensitizers singlet oxygen