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Numerical Study of Flow and Heat Transfer Characteristics of Shell-and-Tube Molten Salt Electric Heater with Circularly Perforated Baffles

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Journal of Thermal Science 2025年第1期34卷 24-33页

作者： LIN Yongjie ZHANG Cancan wu Yuting ZHANG Yi LU Yuanwei Key Laboratory of Heat Transfer and Energy Conversion National User-Side Energy Storage Innovation Research and Development CenterBeijing University of Technology

Numerical simulations of the flow and heat transfer characteristics of four shell-and-tube molten salt electric heaters with different perforation rates was ***-and-tube electric heaters have the same geometry and tube arrangement,and all of them use single segmental baffles,but there exist four different baffle openings（φ）,i.e.,0%,2.52%,4.06%,and 6.31%.The results indicated that the reasonable baffle opening could significantly reduce the shell-side pressure drop,effectively decreasing the shell-side flow dead zone *** can eliminate the local high-temperature phenomenon on the surface of electric heating tubes,but the heat transfer coefficient is slightly *** perforated schemes significantly reduce shell-side pressure drop compared to the baseline solution without open *** particular,the φ=6.31% scheme exhibits the optimal performance among all the schemes,with a maximum reduction of up to 50.50% in shell-side pressure drop relative to the unopened holes *** heat transfer coefficient is the highest for φ=0%,exhibiting a range of5.26% to 5.73%,5.14% to 5.99%,and 7.31% to 8.54% higher than φ=2.52%,4.06%,and 6.31%,respectively,within the calculated *** composite index h/（Δp）1/3was higher for all open-hole solutions than that for the unopened-hole *** best overall performance was for φ=6.31%,which improved the composite index by15.29% to 17.18% over the unopened-hole solution.

关键词： molten salt electric heater perforated baffles heat transfer

Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu wu Qi Chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

美国药品主动监测系统中制药企业参与的机制、具体路径和行为准则研究及启示

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中国药房 2022年第15期33卷 1799-1805页

作者：葛斯羿陈炜吴明洋徐一鸣梁毅中国药科大学国际医药商学院南京211198

目的为我国开展药物警戒工作和建设制药企业广泛参与的主动监测系统提供参考。方法通过中国知网、PubMed等数据库和观测医疗结果合作项目(OMOP)官方网站检索相关的文献和资料,探究OMOP中制药企业参与的机制及其运行模式,并对制药企业参... 详细信息

目的为我国开展药物警戒工作和建设制药企业广泛参与的主动监测系统提供参考。方法通过中国知网、PubMed等数据库和观测医疗结果合作项目(OMOP)官方网站检索相关的文献和资料,探究OMOP中制药企业参与的机制及其运行模式,并对制药企业参与主动监测系统建设的具体路径和行为准则进行分析,最后针对我国现实情况提出相应的建议。结果与结论OMOP中的制药企业通过公私合作伙伴(PPP)机制参与了项目建设和运行,并发挥了项目资助、项目治理和项目研究的作用;参与OMOP的制药企业需遵照广泛的合作、透明度和公开性、保护患者隐私的行为准则开展活动。在未来我国主动监测系统实践中,应当推进主动监测相关立法,强调制药企业的主动监测责任,建立产学研一体的PPP机制,形成良好的治理生态,并加强对患者隐私的保护。

关键词：主动监测系统药物警戒制药企业观测医疗结果合作项目公私合作伙伴

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有机泡沫浸渍法制备泡沫镍的研究

热加工工艺 2018年第8期47卷 63-65,70页

作者：吴名扬桑可正曾德军王若兰丁一耕长安大学材料科学与工程学院

为制备纯度较高、对环境友好的泡沫镍,利用氢气还原NiCl2的原理,将氯化镍涂覆在40 ppi聚氨酯泡沫孔筋表面,除去聚氨酯泡沫后,在加热炉中还原并烧结制备出泡沫镍。研究了还原后泡沫金属的组成以及烧结温度对泡沫金属收缩率、电导率以及... 详细信息

为制备纯度较高、对环境友好的泡沫镍,利用氢气还原NiCl2的原理,将氯化镍涂覆在40 ppi聚氨酯泡沫孔筋表面,除去聚氨酯泡沫后,在加热炉中还原并烧结制备出泡沫镍。研究了还原后泡沫金属的组成以及烧结温度对泡沫金属收缩率、电导率以及抗拉强度的影响。结果表明：烧结温度为1100℃时,利用40 ppi聚氨酯泡沫制备出的泡沫镍孔隙率为94.4%、电导率为1×10^6S/m、抗拉强度为2.67 MPa。

关键词：聚氨酯泡沫氯化镍原位还原法泡沫镍

Photoinduced radical sulfur dioxide insertion with asymmetric cyclization of alkenes: accessing β-chiral sulfones bearing S-stereocentric cyclic sulfinamides

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Science China Chemistry 2025年第1期68卷 257-263页

作者： Jiapian Huang Chenxin Wang Xu Wang Xiaoyu Zhou Wei Xiao Jie wu School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies Taizhou University State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences School of Chemistry and Chemical Engineering Henan Normal University

The generation of various β-chiral sulfones bearing chiral cyclic sulfinamides through photoredox-catalyzed sulfur dioxide insertion with asymmetric radical cyclization is described. This method features a broad substrate scope and excellent stereospecificity. Computational studies reveal that the dispersion interaction between sulfinyl group and CH2SO2Ph group plays a crucial role in the stereoselectivity control.

关键词： β-chiral sulfones chiral cyclic sulfinamides sulfur dioxide insertion asymmetric radical cyclization stereoselectivity

川穹嗪注射液联合甲钴胺治疗糖尿病周围神经病变临床研究

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临床心身疾病杂志 2018年第2期24卷 121-123,154页

作者：吴明洋杨会吕宏伟河南·南阳南阳南石医院 473000

目的探讨川穹嗪注射液联合甲钴胺治疗糖尿病周围神经病变患者的临床疗效.方法将100例糖尿病周围神经病变患者按随机数字表法分为两组,每组50例,均予以饮食、运动治疗、胰岛素治疗,口服甲钴胺治疗,实验组在此基础上联合川穹嗪注射液加... 详细信息

目的探讨川穹嗪注射液联合甲钴胺治疗糖尿病周围神经病变患者的临床疗效.方法将100例糖尿病周围神经病变患者按随机数字表法分为两组,每组50例,均予以饮食、运动治疗、胰岛素治疗,口服甲钴胺治疗,实验组在此基础上联合川穹嗪注射液加入生理盐水中静脉滴注,观察12周.比较治疗前后两组中医症状评分,神经传导测定积分,神经传导速度及治疗后总有效率.结果治疗后两组中医症状各维度评分均较治疗前显著下降,实验组各维度评分显著低于对照组(P<0.01);实验组腓肠、腓侧运动、正中感觉与尺侧感觉神经神经传导测定积分较治疗前显著下降,且显著低于对照组(P<0.01);正中、尺侧、腓肠、胫侧运动神经及正中、胫侧感觉神经传导速度均较治疗前显著升高,且显著高于对照组(P<0.01).实验组总有效率显著高于对照组(P<0.05).结论川穹嗪注射液联合甲钴胺治疗糖尿病周围神经病变患者具有协同增效作用,能显著改善临床症状及感觉与运动神经传导,疗效显著,值得在临床推广应用.

关键词：糖尿病周围神经病变并发症川穹嗪注射液甲钴胺

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新型可复用着陆缓冲装置设计与分析

航天返回与遥感 2024年第2期45卷 1-18页

作者：贾山胡汝洁周向华刘韶阳吴明阳陈金宝南京航空航天大学航天学院南京211106 沈阳飞机设计研究所沈阳110035 航天进入减速与着陆技术实验室南京211106 深空星表探测机构技术工信部重点实验室南京211106

针对目前着陆缓冲装置对着陆地形要求较高且不可复用的缺点,参照自然界中的昆虫着陆腿结构的组成,提出一种可复用的基于仿生结构的四腿式着陆器。支撑腿采取“刚性体控制大腿结构+圆弧结构小腿”的组成方式,并采用摩擦制动器作为缓冲吸... 详细信息

针对目前着陆缓冲装置对着陆地形要求较高且不可复用的缺点,参照自然界中的昆虫着陆腿结构的组成,提出一种可复用的基于仿生结构的四腿式着陆器。支撑腿采取“刚性体控制大腿结构+圆弧结构小腿”的组成方式,并采用摩擦制动器作为缓冲吸能装置的设计方法,通过摩擦力做功,使着陆冲击载荷以热能的形式耗散,实现缓冲吸能。应用D-H参数法推导支撑腿的齐次矩阵变换,对该仿生腿式缓降结构进行支撑腿的正逆运动学分析,建立支撑腿的理论模型并进行动力学仿真。进行了整机多工况落震仿真分析并建立了支撑腿小腿的有限元模型,分析飞行器在支撑腿所受冲击力最大情况下的支撑腿小腿应力应变,结果表明可复用着陆器具有良好的着陆缓冲性能,可为我国后续深空探测任务提供一种可行方案。

关键词：可复用着陆器动力学分析摩擦制动着陆缓冲

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Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue wu Zhi Geng Wenjie Hu Panpan Hu Xingqi wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

聚丙烯酰胺季铵盐大分子药物的环境毒性评价及其实验设计

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实验技术与管理 2024年第8期41卷 77-81页

作者：林雅铃吴明阳张卫孙凯伦张安强华南农业大学材料与能源学院广东广州510642 华南理工大学材料科学与工程学院广东广州510641

聚丙烯酰胺季铵盐(PAM-QAS)是丙烯酰胺(AM)与丙烯酰胺季铵盐(AM-QAS)的无规共聚物,因兼具聚丙烯酰胺的土壤改良特性和大分子季铵盐的抑菌特性,在抑制土壤病原真菌、改良和修复病土等领域有良好的应用前景。但人们对季铵盐具有较高环境... 详细信息

聚丙烯酰胺季铵盐(PAM-QAS)是丙烯酰胺(AM)与丙烯酰胺季铵盐(AM-QAS)的无规共聚物,因兼具聚丙烯酰胺的土壤改良特性和大分子季铵盐的抑菌特性,在抑制土壤病原真菌、改良和修复病土等领域有良好的应用前景。但人们对季铵盐具有较高环境毒性的传统认识,极大地限制了这类新型大分子药物的应用。如何结合PAM-QAS的应用环境,综合、客观地评价其环境毒性,是大分子药物设计和应用中亟待解决的问题。通过在PAM-QAS中修饰荧光基团直观地观察其在土壤中的吸附与淋溶特性,以及结合土壤吸附和淋溶实验用鱼类经口急性毒性实验和蚯蚓毒性实验评价PAM-QAS经土壤吸附后的实际环境毒性,为PAM-QAS的田间应用提供了一定科学依据。该实验内容涉及聚合物结构表征与应用、大分子药物在复杂环境下的定性检测,以及药物的环境毒性评价等诸多环节,具有一定的综合性与探索性,有利于提高学生的综合素质、科研能力和创新能力。

关键词：聚丙烯酰胺季铵盐荧光基团修饰土壤吸附特性环境毒性评价