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Nuclear Science and Techniques 2024年第1期35卷 45-58页

作者： yi-xing lu Wen-Cheng Fang Yu-Sen Guo Zhen-Tang Zhao Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800China University of Chinese Academy of Sciences Beijing 101408China Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204China Shanghai Key Laboratory of Cryogenics&Superconducting RF Technology Shanghai 201800China ShanghaiTech University Shanghai 201210China

Radio frequency quadrupoles(RFQs),which are crucial components of proton injectors,significantly affect the performance of proton accelerator *** RFQ with a high frequency of 714 MHz dedicated to compact proton injectors for medi-cal applications is designed in this *** RFQ is designed to accelerate proton beams from 50 keV to 4 MeV within a short length of 2 m and can be matched closely with the downstream drift tube linac to capture more particles through a preliminary *** develop an advanced RFQ,challenging techniques,including fabrication and tuning method,must be evaluated and verified using a *** aluminium prototype is derived from the conceptual design of the RFQ and then redesigned to confirm the radio frequency performance,fabrication procedure,and feasibility of the tuning ***,a new tuning algorithm based on the response matrix and least-squares method is developed,which yields favorable results based on the prototype,i.e.,the errors of the dipole and quadrupole components reduced to a low level after several tuning *** from the conceptual design and techniques obtained from the prototype,the formal mechanical design of the 2-m RFQ is ready for the next manufacturing step.

关键词： Compact proton injector RFQ IH-DTL High gradient Tuning

Design optimization and cold RF test of a 2.6-cell cryogenic RF gun

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Nuclear Science and Techniques 2021年第9期32卷 84-93页

作者： Cheng Wang Jian-Hao Tan Xiao-Xia Huang yi-xing lu Lin Wang Wen-Cheng Fang Zhen-Tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facility Chinese Academy of SciencesShanghai 201204China

To further improve the performance of acceler-ators,the first cryogenic normal-conducting RF gun in China was designed and *** a new and attractive trend,this optimized cryogenic RF gun can generate a low-emittance beam with a short-driven laser pulse because of its promising high gradient on the *** this paper,optimization of the RF design and beam dynamics,including suppression of the peak RF field and elimination of the multipole mode,is *** addi-tion,the emittance growth caused by the alignment devi-ation and RF jitter is *** the gun was manufactured,a cold test was conducted at both room temperature and cryogenic *** room tempera-ture,the field distribution was obtained by the bead pull *** cryogenic conditions,the RF properties,such as the coupling coefficient and quality factor,varied with *** test results agreed with the *** the cryogenic test,vibration measurements were *** vibration isolation,a maximum vibration of 50 lm was *** cold test results are the basis of the following high-power test.

关键词： Photoinjector Cryogenic structure C-band Cold test

Proton linac-based therapy facility for ultra-high dose rate (FLASH) treatment

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Nuclear Science and Techniques 2021年第4期32卷 1-9页

作者： Wen-Cheng Fang Xiao-Xia Huang Jian-Hao Tan Chao-Peng Wang Cheng-Cheng Xiao yi-xing lu Yu Zhang Yu-Qing Yang yi-Ming Xu Han-Yu Gong Jun-Qiang Zhang Shao-Peng Zhong Zhen-Tang Zhao Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China University of Chinese Academy of Sciences Beijing 100049China Shanghai APACTRON Particle Equipment Company Limited Shanghai 201800China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

As an advanced treatment method in the past five years,ultra-high dose rate(FLASH)radiotherapy as a breakthrough and milestone in radiotherapy development has been verified to be much less harmful to healthy tissues in different *** treatments require an instantaneous dose rate as high as hundreds of grays per second to complete the treatment in less than 100 *** proton therapy facilities with the spread-out of the Bragg peak formed by different energy layers,to our knowledge,cannot easily achieve an adequate dose rate for FLASH treatments because the energy layer switch or gantry rotation of current facilities requires a few seconds,which is relatively long.A new design for a therapy facility based on a proton linear accelerator(linac)for FLASH treatment is proposed *** is designed under two criteria:no mechanical motion and no magnetic field *** new therapy facility can achieve an ultrahigh dose rate of up to 300 Gy/s;however,it delivers an instantaneous dose of 30 Gy within 100 ms to complete a typical FLASH *** design includes a compact proton linac with permanent magnets,a fast beam kicker in both azimuth and elevation angles,a fixed gantry with a static superconducting coil to steer proton bunches with all energy,a fast beam scanner using radio-frequency(RF)deflectors,and a fast low-level RF *** relevant principles and conceptual proposals are presented herein.

关键词： Proton therapy FLASH Proton linac Deflector Superconducting coil Fast scanner

基于剪力比的防屈曲支撑-RC框架抗震设计方法研究

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工程力学 2018年第3期35卷 96-105页

作者：潘毅阎勋章易路行白久林西南交通大学土木工程学院成都610031 佛山市铁路投资建设集团有限公司佛山528000 重庆大学土木工程学院重庆400045

该文提出了基于剪力比的防屈曲支撑-钢筋混凝土框架结构抗震设计方法。根据不同的剪力比α设置不同参数的防屈曲支撑并进行了多个不同层数结构的抗震设计;基于大震弹塑性时程分析,研究了不同剪力比结构的最大层间位移角和防屈曲支撑滞... 详细信息

该文提出了基于剪力比的防屈曲支撑-钢筋混凝土框架结构抗震设计方法。根据不同的剪力比α设置不同参数的防屈曲支撑并进行了多个不同层数结构的抗震设计;基于大震弹塑性时程分析,研究了不同剪力比结构的最大层间位移角和防屈曲支撑滞回耗能比随剪力比α的关系曲线,并得出剪力比α的合理取值范围为0.3<α<0.5。在剪力比合理的取值基础上研究了层间位移角最大值随不同刚度主体框架的变化规律,并建议了主体混凝土框架最大层间位移角的设计取值。该文所提方法简便、实用,为防屈曲支撑耗能减震结构的设计提供了一种新的思路。

关键词：防屈曲支撑混凝土框架结构剪力比抗震设计抗震性能

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan lu Fanpeng Cheng Lijuan Shi Qun yi Yao Liu yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

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沈昌文编辑出版实践的三个“第一”思想

三峡大学学报（人文社会科学版） 2023年第5期45卷 111-115页

作者：杨光宗邢艺露湖北民族大学文学与传媒学院湖北恩施445000

王蒙曾经评价沈昌文是20世纪八九十年代知识界的一个角色。沈昌文的编辑出版思想启蒙在改革开放前,成熟在八九十年代,收获在20世纪末21世纪初。他的身上既有“革命型”出版家们开拓、奉献的工匠精神,也具有新时代出版人所必需的创新整... 详细信息

王蒙曾经评价沈昌文是20世纪八九十年代知识界的一个角色。沈昌文的编辑出版思想启蒙在改革开放前,成熟在八九十年代,收获在20世纪末21世纪初。他的身上既有“革命型”出版家们开拓、奉献的工匠精神,也具有新时代出版人所必需的创新整合能力。他“文化第一”“质量第一”“人脉第一”的编辑出版思想内涵丰富,追求出版物思想性和可读性的统一,社会效益和经济效益的统一,展现了他兼收并蓄的胸襟。沈昌文编辑出版三个“第一”思想,对推动传统与现代出版融合具有重要的启发意义和现实价值。

关键词：沈昌文文化第一质量第一人脉第一三联书店编辑出版

Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-Yu Zhao Juan-Han Yu yi-Hua Wang yi-Xin Liu lu Xu Lin Fu Ning yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第1期 174-180页

作者： Fan-Xiao Meng xing-Yu Wang Ka lu Ju-Song Yang Fu-Min Zhang Ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

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基于CFD模型的大跨度温室自然通风热环境模拟

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中国农业气象 2017年第4期38卷 221-229页

作者：张芳方慧杨其长程瑞锋张义柯行林卢威刘焕中国农业科学院农业环境与可持续发展研究所/农业部设施农业节能与废弃物处理重点实验室北京100081

大跨度温室作为一种新型南北走向的钢骨架覆膜温室,解决了传统日光温室土地利用率低、空间狭小的问题。为了研究在自然通风条件下大跨度温室的温度和气流场的分布规律,以及不同室外风速条件下通风口开度对大跨度温室温度和气流场的影响... 详细信息

大跨度温室作为一种新型南北走向的钢骨架覆膜温室,解决了传统日光温室土地利用率低、空间狭小的问题。为了研究在自然通风条件下大跨度温室的温度和气流场的分布规律,以及不同室外风速条件下通风口开度对大跨度温室温度和气流场的影响,利用计算流体力学(computational fluid dynamics,CFD)软件构建三维稳态大跨度温室模型,模拟自然通风条件下大跨度温室内的温度场和气流场,并采集典型晴天下通风口开启50%时大跨度温室内13个测点的温度,将各测点的测量值与模拟值进行比较,最后利用已验证模型模拟分析通风口开度(25%、50%、75%、100%)在不同室外风速(1、2、3、4 m·s^(-1))条件下的大跨度温室温度和气流场。验证结果表明:模型模拟值与实测值的绝对误差在0.2~2.8℃,均方根误差为1.6℃,最大相对误差为9.9%,平均相对误差为4.1%,表明模拟值与实测值吻合良好。模拟结果显示,温室顶部温度高,底部温度低;室外冷空气从西侧通风口进入,温室内西侧温度低于东侧;温室内平均风速从南到北逐渐减小;温室中部风速明显小于东西两侧。大跨度温室上通风口及侧通风口全开时,温室内温度分布较均匀。温室通风口开度一定时,温室内通风率与室外风速呈显著线性正相关。考虑温室内温度及风速对作物的影响,以降温为主要目的时,建议通风口开度取75%~100%,若室外风速大于3m·s-1且室内温度能满足作物生长,则建议通风口开度<75%。

关键词： CFD模型模型温度场气流场通风率

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盐酸伐昔洛韦片溶出方法的研究

齐鲁药事 2007年第12期26卷 724-725页

作者：冯光玲冀东伊星璐山东省医药工业研究所山东济南250100 山东省千佛山医院山东济南250014

目的建立盐酸伐昔洛韦片溶出度的测定方法。方法以水900mL为溶出介质，转速50r·min ^-1，紫外检测波长为252nm。结果盐酸伐昔洛韦浓度在3.28～22.32μg·mL^-1范围内与吸光度呈良好线性关系，r=0.9998；平均回收率为99．7％。结论该方... 详细信息

目的建立盐酸伐昔洛韦片溶出度的测定方法。方法以水900mL为溶出介质，转速50r·min ^-1，紫外检测波长为252nm。结果盐酸伐昔洛韦浓度在3.28～22.32μg·mL^-1范围内与吸光度呈良好线性关系，r=0.9998；平均回收率为99．7％。结论该方法操作简便、准确，可用于该片溶出度的测定。

关键词：盐酸伐昔洛韦片溶出度