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Conceptual design and neutronic analysis of a megawatt-level vehicular microreactor based on TRISO fuel particles and S-CO_(2) direct power generation

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Nuclear Science and Techniques 2022年第6期33卷 18-33页

作者： fang-yuan zhang Gui-Feng Zhu Yang Zou Rui Yan Hong-Jie Xu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

With global warming,the demand for diversified energy sources has increased *** microreactors are important potential supplements to the global power market and are a promising development *** paper describes a 5 MW integrated long-life S-CO_(2)cooled vehicular microreactor(VMR)design based on tristructural isotropic(TRISO)fuel particles that aims to provide electricity for industrial power facilities,remote mines,and remote mountainous areas that are not connected to central power ***,to facilitate transportation,flexible deployment,and simplified operation and maintenance requirements,the VMR core and auxiliary system were designed to be reasonably small and as simple as ***,the TRISO fuel particles used in the proposed VMR offer excellent properties,such as high inherent security and nonproliferation,which are vital for reactors in remote *** addition,a long core lifetime was achieved using the compact core design and enhanced fuel loading capacity,which is challenging when using TRISO as ***,to make the VMR economically competitive in terms of improved neutron performance and fuel efficiency compared to similar designs,large-size TRISO particles and tube-in-duct fuel assembly were utilized and different core configurations were schemed and simulated to obtain the design that best satisfied the proposed *** lifetime and burnup in the final optimized VMR were satisfactory at 21 years and43.9 MWd/kgU,respectively,with an adequate shutdown margin and excellent safety parameters to ensure safe operation.

关键词： Vehicular microreactor Tristructural isotropic particle Tube-in-duct assembly Compact core Lifetime Burnup

A review on WO_(3)-based composite photocatalysts:synthesis,catalytic mechanism and diversified applications

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Rare Metals 2024年第8期43卷 3441-3459页

作者： Xue zhang Zi-Qi zhang Yan-Dong Sun Xiao-Jia Ma Feng-Xian Jin fang-yuan zhang Wei-Guang Han Bo-Xiong Shen Sheng-Qi Guo College of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Department of Food and Chemical Engineering Liuzhou Institute of TechnologyLiuzhou 545616China

Photocatalysis as an emerging "green" energy conversion technology has attracted domestic and international *** technology uses semiconductor photocatalysts to convert solar energy into directly usable chemical energy,showing great potential for application in environmental pollutant purification and clean energy production,with broad development *** many semiconductor materials,tungsten trioxide(WO_(3)) is favored by researchers in the field of photocatalysis because of its good visible light response and excellent valence band hole oxidation ***,a large number of photocatalysts based on WO_(3),in particular W03-based composite photocatalysts,have been reported,and their applications cover a wide range of *** order to promote the development of WO_(3)-based photocatalysts and provide a reference for colleagues,we present a systematic summary of the applications and research progress of W03-based composites in the field of photocatalysis in recent *** from the structural properties of WO_(3)itself,this article summarizes the preparation methods and structure-activity relationships of WO_(3)-based composite ***,it introduces the current application status of existing WO_(3)-based composite photocatalysts in CO_(2) reduction,hydrogen production,nitrogen fixation,and pollutant ***,the development prospects were analyzed.

关键词： WO_(3)-based composite photocatalysts Intrinsic characteristic Preparation method Reaction mechanism Applications

How to select the quantitative magnetic resonance technique for subjects with fatty liver:A systematic review

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World Journal of Clinical Cases 2022年第25期10卷 8906-8921页

作者： You-Wei Li Yang Jiao Na Chen Qiang Gao Yu-Kun Chen yuan-fang zhang Qi-Ping Wen Zong-Ming zhang Department of Radiology Beijing Rehabilitation HospitalCapital Medical UniversityBeijing 100144China Department of Rehabilitation Psychology Beijing Rehabilitation HospitalCapital Medical UniversityBeijing 100144China Department of Otorhinolaryngology Beijing Rehabilitation HospitalCapital Medical UniversityBeijing 100144China Department of Gastroenterology and Hepatology Beijing Rehabilitation HospitalCapital Medical UniversityBeijing 100144China Department of General Surgery Beijing Electric Power HospitalState Grid Corporation of ChinaCapital Medical UniversityBeijing 100073China

BACKGROUND Early quantitative assessment of liver fat content is essential for patients with fatty liver *** evidence has shown that magnetic resonance(MR)technique has high accuracy in the quantitative analysis of fatty liver,and is suitable for monitoring the therapeutic effect on fatty ***,many packaging methods and postprocessing functions have puzzled radiologists in clinical ***,selecting a quantitative MR imaging technique for patients with fatty liver disease remains *** To provide information for the proper selection of commonly used quantitative MR techniques to quantify fatty *** We completed a systematic literature review of quantitative MR techniques for detecting fatty liver,following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses *** were retrieved from PubMed,Embase,and Cochrane Library databases,and their quality was assessed using the Quality Assessment of Diagnostic Studies *** Reference Citation Analysis database(https://***)was used to analyze citation of articles which were included in this *** Forty studies were included for spectroscopy,two-point Dixon imaging,and multiple-point Dixon imaging comparing liver biopsy to other imaging *** advantages and disadvantages of each of the three techniques and their clinical diagnostic performances were *** The proton density fat fraction derived from multiple-point Dixon imaging is a noninvasive method for accurate quantitative measurement of hepatic fat content in the diagnosis and monitoring of fatty liver progression.

关键词： Fatty liver Hepatic fat content ~1H-magnetic resonance spectroscopy Multiple-point Dixon imaging Two-point Dixon imaging

Hydrogel-elastomer-based stretchable strain sensor fabricated by a simple projection lithography method

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International Journal of Smart and Nano Materials 2021年第3期12卷 256-268页

作者： Zhenqing Li Xiangnan He Jianxiang Cheng Honggeng Li yuan-fang zhang Xiaojuan Shi Kai Yu Hui Ying Yang Qi Ge Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhenChina Guangdong Provincial Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities Southern University of Science and TechnologyShenzhenChina Digital Manufacturing and Design Centre Singapore University of Technology and DesignSingapore Department of Mechanical Engineering University of Colorado DenverDenverCOUSA National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbinP.R.China

Stretchable strain sensor detects a wide range of strain variation and is therefore a key component in various *** traditional ones made of elastomers doped with conductive components or fabricated with liquid conductors,ionically conductive hydrogel-based strain sensors remain conductive under large deformations and are ***,dehydration is a challenging issue for the *** have developed hydrogel-elastomer-based strain sensors where an elastomer matrix encapsulates a hydrogel circuit to prevent its ***,the reported multistep approaches are generally *** group recently reported a multimaterial 3D printing approach that enables fast fabrication of such sensors,yet requires a self-built digital-light-processing-based multimaterial 3D ***,we report a simple projection lithography method to fabricate hydrogel-elastomer-based stretchable strain sensors within 5 *** method only requires a UV projector/lamp with photomasks;the chemicals are commercially available;the protocols for preparing the polymer precursors are friendly to users without chemistry ***,the manufacturing flexibility allows users to readily pattern the sensor circuit and attach the sensor to a 3D printed soft pneumatic actuator to enable strain sensing on the *** proposed approach paves a simple and versatile way to fabricate hydrogel-elastomer-based stretchable strain sensors and flexible electronic devices.

关键词： Ionically conductive hydrogel stretchable strain sensor projection lithography

Roles of Serum Amyloid A 1 Protein Isoforms in Rheumatoid Arthritis

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Engineering 2022年第3期8卷 174-182页

作者： Elaine Laihan Leung Huan-Ling Lai Run-Ze Li Hu-Dan Pan Ze-Bo Jiang Ying Li Fu-Gang Duan Jia-Hui Xu Yi-Zhong zhang A-Xi Shi Chun-Li Wei fang-yuan zhang Xiao-Jun Yao Liang Liu State Key Laboratory of Quality Research in Chinese Medicine&Macao Institute for Applied Research in Medicine and Health&Faculty of Chinese Medicine Macao University of Science and TechnologyMacao 999078China Department of Pediatrics Pennsylvania State University College of MedicineHersheyPA 17033USA

Secondary amyloid A amyloidosis,a lethal complication,is induced when acute or chronic infection coexists with over-secretion of the serum amyloid A 1(SAA1)protein and deposition in key internal ***,using the whole-exome sequencing method,we identified a novel deleterious mutation SAA1.2 in rheumatoid arthritis(RA)***,the role of SAA1 in RA pathogenesis and its complications remains *** purpose of this study was to determine the pathogenetic roles of SAA1 protein isoforms in RA *** modified an experimental adenovirus infection protocol to introduce SAA1.2 gene alleles into the knee joints of mice and used SAA1.3 and SAA1.5 as *** tomography analysis was applied to determine changes in bone morphology and ***(IHC)analysis,flow cytometry,enzyme-linked immunosorbent assay(ELISA),and real-time polymerase chain reaction(RT-PCR)were used to investigate disease progression and cytokine alterations in the course of adenoviral SAA-induced knee joint inflammation and bone *** found that the arthritis-inducing effect of SAA1.2 transcription in the knee joints and mutant SAA1 protein secretion in blood resulted in the stimulation of immune responses,leading to CD8^(+)T cell and pro-inflammatory cytokine elevation,such as interleukin(IL)-6,IL-22,matrix metalloproteinase(MMP)-3,MMP-9,with subsequent synovial inflammation and bone *** findings indicate that SAA1 protein isoforms,particularly SAA1.2,play a significant role in the induction and progression of RA and may have potential value in the early diagnosis and severity prediction of RA.

关键词： Serum amyloid A 1 Rheumatoid arthritis Pathogenetic Intra-articular

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面向噪声品质优化的减速器箱体结构设计

中南大学学报（自然科学版） 2017年第9期48卷 2331-2337页

作者：方源章桐汪浩然郭荣同济大学新能源汽车工程中心上海201804 同济大学汽车学院上海201804 同济大学中德学院上海201804

为降低电动车减速器辐射噪声,提高电动车动力总成噪声品质,对减速器箱体进行结构优化设计。分析减速器噪声品质的频域特性,并结合模态分析和振动噪声阶次分析确定结构优化的区域和目标,采用拓扑优化和形貌优化方法对减速器箱体进行低噪... 详细信息

为降低电动车减速器辐射噪声,提高电动车动力总成噪声品质,对减速器箱体进行结构优化设计。分析减速器噪声品质的频域特性,并结合模态分析和振动噪声阶次分析确定结构优化的区域和目标,采用拓扑优化和形貌优化方法对减速器箱体进行低噪声结构优化。研究结果表明:优化后减速器的表面振动和辐射噪声有所降低,噪声品质显著提高。

关键词：减速器拓扑优化形貌优化噪声品质心理声学

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

The dopaminergic system and Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2495-2512页

作者： Yuhan zhang yuan Liang Yixue Gu International Medical College Chongqing Medical UniversityChongqingChina College of Pharmacy Chongqing Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of NeurologyChongqingChina

Alzheimer's disease is a common neurodegenerative disorder in older *** its prevalence,its pathogenesis remains unclea *** addition to the most widely accepted causes,which in clude excessive amyloid-beta aggregation,tau hyperphosphorylation,and deficiency of the neurotransmitter acetylcholine,numerous studies have shown that the dopaminergic system is also closely associated with the occurrence and development of this *** is a crucial catecholaminergic neurotransmitter in the human ***-associated treatments,such as drugs that target dopamine receptor D and dopamine analogs,can improve cognitive function and alleviate psychiatric symptoms as well as ameliorate other clinical *** r,therapeutics targeting the dopaminergic system are associated with various adverse reactions,such as addiction and exacerbation of cognitive *** review summarizes the role of the dopaminergic system in the pathology of Alzheimer's disease,focusing on currently available dopamine-based therapies for this disorder and the common side effects associated with dopamine-related *** aim of this review is to provide insights into the potential connections between the dopaminergic system and Alzheimer's disease,thus helping to clarify the mechanisms underlying the condition and exploring more effective therapeutic options.

关键词： adverse drug reaction Alzheimer's disease catecholamine dopamine receptor dopamine receptor heterodimers dopaminergic system neurodegenerative disease neurotransmitter signaling pathways traditional Chinese medicine treatment

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新型履带式全方位移动平台运动分析

浙江大学学报（工学版） 2018年第7期52卷 1345-1353,1397页

作者：杨怀彬张豫南黄涛房远张骞张杰陆军装甲兵学院兵器与控制系 63983部队

为了改善轮式全方位移动平台路面适应性、载重等方面的不足,基于全方位履带结构,采用与传统履带车辆类似的对称布局形式,设计新型的履带式全方位移动平台.根据平台布局特点,确定最优布局形式,建立运动学和动力学模型,分析平台运动的各... 详细信息

为了改善轮式全方位移动平台路面适应性、载重等方面的不足,基于全方位履带结构,采用与传统履带车辆类似的对称布局形式,设计新型的履带式全方位移动平台.根据平台布局特点,确定最优布局形式,建立运动学和动力学模型,分析平台运动的各向相异性.以中心转向运动为例进行对比分析可知,全方位平台转向滑动摩擦力矩和驱动力矩均减小.为了确保全方位平台具备和传统履带平台相同的转向能力,确定平台设计应满足的几何条件.根据设计原则,利用ADAMS软件建立平台虚拟样机,对平台纵向直行、横向直行、45°斜行、中心转向运动、E级不平路面和爬越楼梯进行仿真.仿真结果表明,该平台具备全方位移动性能和较好的路面适应性.

关键词：全方位移动平台履带转向运动辊轮偏置角各向相异性