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Energy Engineering 2022年第1期119卷 387-405页

作者： lei Zhang Yinlong Yuan Yihe Sun Yun Cheng Dian Wu lei ren School of Electrical Engineering Nantong UniversityNantong226019China School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou221116China

focus of all *** an effective new energy,the fuel cell has attracted the attention of ***,due to the particularity of proton exchange membrane fuel cell(PEMFC),the performance of traditional PI controlled phase-shifted full-bridge power electronics DC-DC converter cannot meet the needs of practical *** order to further improve the dynamic performance of the converter,this paper first introduces several main topologies of the current mainstream front-end DC-DC converter,and analyzes their performance in the fuel cell ***,the operation process of the phase-shifted fullbridge power electronics DC-DC converter is introduced,and the shortcomings of the traditional PI control are ***,a double closed-loop adaptive fuzzy PI controller is proposed,which is characterized by dynamically adjusting PI parameters according to different working states to complete the intelligent control of phase-shifted full-bridge DC-DC *** simulation results in MATLAB/Simulink show that the proposed algorithm has good a control *** with the traditional algorithm,the overshoot and stabilization time of the system are *** algorithm can effectively suppress the fluctuation of the output current of the fuel cell converter,and is a very practical control method.

关键词： Phase-shifted full-bridge adaptive fuzzy PI control proton exchange membrane fuel cell MATLAB/Simulink

母细胞性浆细胞样树突细胞肿瘤2例并文献复习

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临床荟萃 2024年第3期39卷 253-258页

作者：任雷刘晔鲍书友李葵芳江阴市中医院病理科江苏江阴214400

目的探讨母细胞性浆细胞样树突细胞肿瘤的临床病理特征、治疗及预后。方法结合相关文献,回顾性分析2例母细胞性浆细胞样树突细胞肿瘤患者的临床表现、组织学形态、免疫表型、治疗方案及预后。结果2例组织形态均符合母细胞性浆细胞样树... 详细信息

目的探讨母细胞性浆细胞样树突细胞肿瘤的临床病理特征、治疗及预后。方法结合相关文献,回顾性分析2例母细胞性浆细胞样树突细胞肿瘤患者的临床表现、组织学形态、免疫表型、治疗方案及预后。结果2例组织形态均符合母细胞性浆细胞样树突细胞肿瘤的病理改变,免疫组织标记CD4、CD56、CD123、TCL1阳性,排除淋巴系、髓系及NK细胞来源,2例EBER原位杂交检测结果均为阴性;例l累及骨髓及淋巴结,对症支持治疗,2月后死亡;例2经CHOP方案化疗8周期,半年后病情进展,全身多发红疹,后予吉西他滨、奥沙利铂及培门冬酶化疗9周期,目前病情稳定。结论母细胞性浆细胞样树突细胞肿瘤多以皮肤症状为首发,具有独特的临床病理特点,诊断依靠组织学及免疫表型,目前尚无有效的治疗方案且预后差。

关键词：母细胞性浆细胞样树突细胞肿瘤病理学,临床免疫表型分型治疗

Driving modes and characteristics of biomedical micro-robots

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Engineered Regeneration 2023年第4期4卷 411-426页

作者： Libing Huang Yueyuan Pan Miao Wang lei ren The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province Department of BiomaterialsResearch Center of Biomedical Engineering of XiamenCollege of MaterialsXiamen University422 Siming Nan RoadXiamen 361005People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China

Micro-robots(MRs)are miniature machines with dimensions smaller than 1 mm and have semior fully-autonomous capabilities,including sensing,decision-making,and performing *** MRs have garnered significant attention in the precision medicine and personalized treatment field due to their ability to navigate narrow areas of the human body with non-desirable fluid ***,MRs are actuated by a mechanism that generates propulsive force through the interaction between MRs’actuation modules and external energy sources in a specific *** driving mechanism enables the precise execution of medical treatment such as targeted drug delivery and minimally invasive ***,MRs currently encounter certain challenges in clinical practice,including reliance on external energy sources,short lifespan,and difficulties in degradation or recovery within the human *** article aims to review the common components and characteristics of driving mechanism for MRs’actuation modules,propose possible solutions to address current clinical challenges,and ultimately,explore the desirable structural and functional composition for the future development of *** these efforts,this review hopes to provide guidance for the future development of MRs in the field of precision medicine.

关键词： Micro-robots Biomedical Actuation modules Driving mechanism Smart materials

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隐睾患儿病因分析及临床诊疗进展

中华腔镜泌尿外科杂志(电子版) 2024年第1期18卷 100-104页

作者：任磊张瑞敏赵永祥内蒙古医科大学包头临床医学院/包头市中心医院泌尿外科内蒙古自治区包头市第四医院泌尿外科

隐睾症(cryptorchidism)也称为睾丸未降，可发生于单侧或双侧，多数位于腹腔到阴囊正常下降路线中的一处(即腹腔、腹股沟管、阴囊上或阴囊高位)，异位睾丸也是隐睾症的一种，受多种原因影响异位附着于腹前壁皮下、耻骨部、股部以及对侧... 详细信息

隐睾症(cryptorchidism)也称为睾丸未降，可发生于单侧或双侧，多数位于腹腔到阴囊正常下降路线中的一处(即腹腔、腹股沟管、阴囊上或阴囊高位)，异位睾丸也是隐睾症的一种，受多种原因影响异位附着于腹前壁皮下、耻骨部、股部以及对侧腹股沟、阴囊等部位。根据睾丸的位置，可分为可触及睾丸和不可触及睾丸，其中80%的隐睾可触及[1]。

关键词：隐睾症激素治疗开放手术腹腔镜手术睾丸自体移植

Structured Graded Lung Rehabilitation for Children with Mechanical Ventilation

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Computer Systems Science & Engineering 2022年第1期40卷 139-150页

作者： lei ren Jing Hu Mei Li Ling Zhang Jinyue Xia Department of Nursing Children’s Hospital of Nanjing Medical UniversityNanjing210008China Department of rehabilitation medicine Children’s Hospital of Nanjing Medical UniversityNanjing210008China International Business Machines Corporation(IBM) NYUSA

Lung rehabilitation is safe and feasible,and it has positive benefits in weaning the machine as soon as possible,shortening the time of hospitalization and improving the prognosis of children with mechanical ***,at present,the traditional medical concept is deep-rooted,and doctors'understanding of early rehabilitation is *** is necessary to make in-depth exploration in the relevant guidelines and expert consensus to formulate standardized early rehabilitation diagnosis and treatment procedures and standards for mechanically ventilated *** the paper,a structured graded lung rehabilitation program is constructed for children with mechanical ventilation to improve their respiratory function,shorten the time of mechanical ventilation and pediatric intensive care unit(PICU)hospitalization,and reduce their anxiety,based on the principal component analysis of functional pneumonia *** evaluation and dynamic monitoring ensure the safety of the implementation of the program and promote the prognosis and prognosis of the *** proposed lung reha-bilitation program provides a reference basis for the formulation of lung rehabilitation guidelines for children with mechanical *** It has important reference significance for clinical pulmonary rehabilitation to alleviate the concerns of clinicians and lay the foundation for the large-scale promotion of early lung rehabilitation.

关键词： Lung rehabilitation mechanical ventilation principal component analysis

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脱硫石膏制备α-半水石膏研究进展及应用

无机盐工业 2024年第2期56卷 11-20,29页

作者：杨凤玲乔国鑫杨普任磊王琼吴海滨程芳琴山西大学山西太原030006 山西大学黄河实验室山西太原030006 山西达辰新材料科技股份有限公司山西晋中031300

随着中国工业的不断发展,产生了大量的脱硫石膏,目前脱硫石膏的综合利用量虽在逐年增加,但其利用率却在降低,探寻脱硫石膏的高值化利用途径迫在眉睫,其中脱硫石膏资源化利用途径之一是将其脱水转化成α-半水石膏。利用脱硫石膏来制备高... 详细信息

随着中国工业的不断发展,产生了大量的脱硫石膏,目前脱硫石膏的综合利用量虽在逐年增加,但其利用率却在降低,探寻脱硫石膏的高值化利用途径迫在眉睫,其中脱硫石膏资源化利用途径之一是将其脱水转化成α-半水石膏。利用脱硫石膏来制备高性能、高附加值的α-半水石膏,不仅能减轻石膏堆积对环境的污染,减少天然石膏的开采,还能带来新的经济效益。基于此,系统地综述了国内外脱硫石膏制备α-半水石膏的研究现状及影响因素,总结了其生产工艺路径及应用,并对推进脱硫石膏的减量化、资源化利用提出了展望,旨在提高固废利用率,促进“碳中和、碳减排”。

关键词：脱硫石膏 α-半水石膏工艺路径资源化利用

Effect of oxygen addition and annealing time on microstructure and mechanical properties of Ti-34Nb alloy

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Journal of Iron and Steel Research(International) 2023年第1期30卷 158-164页

作者： Jun-shuai Wang Wen-long Xiao lei ren Yu Fu Chao-li Ma Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education School of Materials Science and EngineeringBeihang UniversityBeijing 100191China

The effect of oxygen addition and annealing time on microstructure and mechanical properties of Ti-34Nb and Ti-34Nb-0.2O alloys was *** addition of O suppresses the martensitic *** phase composition changes from singleα''phase toα''+βphases with oxygen *** addition of oxygen increases strength significantly at as-received,cold-rolled,and annealed alloys through solid solution *** accumulation of abundance of defects and grain refinement introduced by cold rolling have a significant strengthening effect but also damage *** addition of oxygen increasesα/βtransformation temperature and promotes the precipitation ofαphase during annealing in Ti-34Nb-0.2O alloy.αprecipitates can inhibit grain growth during *** strength decreases with annealing time increased due to the increase in grain size in Ti-34Nb alloy,while the strength increases in Ti-34Nb-0.2O alloy mainly due to the precipitation ofα*** cold rolling followed by annealing and addition of oxygen can improve the properties of alloys.

关键词： Titanium alloy Oxygen addition Annealing time αprecipitate

Fiber-dominated Soft Actuators Inspired by Plant Cell Walls and Skeletal Muscles

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Journal of Bionic Engineering 2023年第3期20卷 982-991页

作者： Luquan ren Qian Wu Qingping Liu lei ren Kunyang Wang Xueli Zhou Zhenguo Wang Yulin He Che Zhao Bingqian Li Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun130022China School of Mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK School of Aerospace and Mechanical Engineering Changzhou Institute of TechnologyChangzhou213032China

Morphing botanical tissues and animal muscles are all fiber-mediated composites, in which fibers play a passive and active role, respectively. Herein, inspired by the mechanism of fibers functioning in morphing botanical tissues and animal muscles, we propose two sorts of fiber-dominated composite actuators. First, inspired by the deformation of awned seeds in response to humidity change, we fabricate passive fiber-dominated actuators using non-active aligned carbon fibers via 4D printing method. The effects of process parameters, structural parameters, and fiber angles on the deformation of the printed actuators are examined. The experimental results show that the orientation degree is enhanced, resulting in a better swelling effect as the printing speed increases. Then, motivated by the actuation mechanism of skeletal muscle, we prepare active fiber-dominated actuators using active polyurethane fibers via 4D printing and pre-stretching method. The effect of fiber angle and loading on the actuation mode is experimentally analyzed. The experimental results show that the rotation angle of the actuator gradually decreases with the angle from 45° to 60°. When the fiber angle is 0° and 90°, the driver basically stops rotating while shrinking along the loading direction. Based on the above actuation mechanisms, identical contraction behaviors are realized both in passive and active fiber-dominated soft actuators. This work provides a validation method for biologically actuation mechanisms via 4D printing technique and smart materials and adds further insights to the design of bioinspired soft actuators.

关键词： Bioinspired Biological materials Fiber-mediated composites Actuator 4D printing

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低成本惯性多冗余导航控制一体机设计

电子技术应用 2024年第2期50卷 102-106页

作者：牛志朝任磊贺韬崔孟楠北京航天自动控制研究所北京100854

为了智能体的精确定位和定姿,实现其稳定运动控制,设计了一种低成本多惯性冗余导航控制一体机,给出了设计方法。稳压电路的开关电源MP2482DN和线性电源JW29300U-3.3V为一体机提供稳定5 V和3.3 V的较大功率电源;控制器STM32H7的SPI采用... 详细信息

为了智能体的精确定位和定姿,实现其稳定运动控制,设计了一种低成本多惯性冗余导航控制一体机,给出了设计方法。稳压电路的开关电源MP2482DN和线性电源JW29300U-3.3V为一体机提供稳定5 V和3.3 V的较大功率电源;控制器STM32H7的SPI采用星形拓扑总线与3片六轴惯性芯片BMI088通信,2路TTL串口与差分卫星定位板双向通信,实现智能体定位和定姿;控制器STM32F4的CAN总线接口与智能体底盘双向通信,实现其运动控制,1路TTL串口实现与控制器STM32H7的双向通信;两控制器的网络接口与上位机组成无线局域网,实现数据交换和状态监控。整个系统具有功耗低、体积小、成本低、接口丰富的特点。

关键词：惯性多冗余定位和定姿导航控制一体低成本

Design of a Flexible Bionic Ankle Prosthesis Based on Subject-specific Modeling of the Human Musculoskeletal System

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Journal of Bionic Engineering 2023年第3期20卷 1008-1020页

作者： Jianqiao Jin Kunyang Wang lei ren Zhihui Qian Wei Liang Xiaohan Xu Shun Zhao Xuewei Lu Di Zhao Xu Wang Luquan ren Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun130025China Weihai Institute for Bionics Jilin UniversityWeihai264402China School of Mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK

A variety of prosthetic ankles have been successfully developed to reproduce the locomotor ability for lower limb amputees in daily lives. However, they have not been shown to sufficiently improve the natural gait mechanics commonly observed in comparison to the able-bodied, perhaps due to over-simplified designs of functional musculoskeletal structures in prostheses. In this study, a flexible bionic ankle prosthesis with joints covered by soft material inclusions is developed on the basis of the human musculoskeletal system. First, the healthy side ankle–foot bones of a below-knee amputee were reconstructed by CT imaging. Three types of polyurethane rubber material configurations were then designed to mimic the soft tissues around the human ankle, providing stability and flexibility. Finite element simulations were conducted to determine the proper design of the rubber materials, evaluate the ankle stiffness under different external conditions, and calculate the rotation axes of the ankle during walking. The results showed that the bionic ankle had variable stiffness properties and could adapt to various road surfaces. It also had rotation axes similar to that of the human ankle, thus restoring the function of the talocrural and subtalar joints. The inclination and deviation angles of the talocrural axis, 86.2° and 75.1°, respectively, as well as the angles of the subtalar axis, 40.1° and 29.9°, were consistent with the literature. Finally, dynamic characteristics were investigated by gait measurements on the same subject, and the flexible bionic ankle prosthesis demonstrated natural gait mechanics during walking in terms of ankle angles and moments.

关键词： Ankle prosthesis Bionic design Soft materials Variable stiffness Gait mechanics