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Plutonium utilization in a small modular molten-salt reactor based on a batch fuel reprocessing scheme

Nuclear Science and Techniques 2024年第4期35卷 15-28页

作者： Xue-Chao Zhao Rui yan Gui-Feng zhu ya-Fen Liu Jian Guo Xiang-Zhou Cai yang Zou Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China CAS Innovative Academies in TMSR Energy System Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

A molten salt reactor(MSR)has outstanding features considering the application of thorium fuel,inherent safety,sustainability,and resistance to ***,fissile material^(233)U is significantly rare at the current stage,thus it is difficult for MSR to achieve a pure thorium-uranium fuel ***,using plutonium or enriched uranium as the initial fuel for MSR is more *** this study,we aim to verify the feasibility of a small modular MSR that utilizes plutonium as the starting fuel(SM-MSR-Pu),and highlight its advantages and ***,the structural design and fuel management scheme of the SM-MSR-Pu were ***,the neutronic characteristics,such as the graphite-irradiation lifetime,burn-up performance,and coefficient of temperature reactivity were calculated to analyze the physical characteristics of the *** results indicate that plutonium is a feasible and advantageous starting fuel for a SM-MSR;however,there are certain shortcomings that need to be *** a 250 MWth SM-MSR-Pu,approximately 288.64 kg^(233)U of plutonium with a purity of greater than 90% is produced while 978.00 kg is burned every ten *** temperature reactivity coefficient decreases from -4.0 to -6.5 pcm K^(-1) over the 50-year operating time,which ensures a long-term safe ***,the amount of plutonium and accumulation of minor actinides(MAs)would increase as the burn-up time increases,and the annual production and purity of^(233)U will *** achieve an optimal burn-up performance,setting the entire operation time to 30 years is ***,more than 3600 kg of plutonium eventually accumulate in the *** research is required to effectively utilize this accumulated plutonium.

关键词： Molten salt fuel Plutonium utilization ^(233)U TRUs mole fraction Temperature feedback coefficient

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等离子喷涂HA/Ti复合涂层研究 Ⅱ.生物学性能

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无机材料学报 2000年第6期15卷 1082-1088页

作者：郑学斌丁传贤王毅朱雅萍任一萍中国科学院上海硅酸盐研究所上海200050 上海市伤骨科研究所上海200025

对等离子喷涂ＨＡ／Ｔｉ复合涂层进行模拟体液和体外细胞试验，以考察涂层的生物学性能，结果指出，涂层经模拟体液浸泡后，表面覆盖一层碳酸磷灰石（ｃａｒｂｏｎａｔｅ－ａｐａｔｉｔｅ），这表明涂层具有良好的生物活性．粗糙的涂... 详细信息

对等离子喷涂ＨＡ／Ｔｉ复合涂层进行模拟体液和体外细胞试验，以考察涂层的生物学性能，结果指出，涂层经模拟体液浸泡后，表面覆盖一层碳酸磷灰石（ｃａｒｂｏｎａｔｅ－ａｐａｔｉｔｅ），这表明涂层具有良好的生物活性．粗糙的涂层表面易于形成碳酸磷灰石．模拟体液的浓度太小或ＰＨ值太大，均会导致碳酸磷灰石层不能在涂层表面形成．体外细胞试验显示，成骨细胞能在涂层表面紧密贴壁并正常生长，显示涂层具有优良的生物相容性．

关键词： HA/Ti复合涂层体液试验等离子喷涂生物材料

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Discharge and mass transfer characteristics of atmospheric pressure gas-solid two-phase gliding arc

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Plasma Science and Technology 2024年第9期26卷 88-96页

作者： Min zhu Yuchen ping Yinghao ZHANG Chaohai ZHANG Shuqun WU Department of Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106People’s Republic of China

In this work,a gas-solid two-phase gliding arc discharge(GS-GAD)reactor was *** arc was formed in the gap between the blade electrodes,and solid powder was deposited on the sieve plate positioned beneath the blade electrodes.A range of experimental parameters,including the inter-electrode spacing,gas flow rate,applied voltage,and the type of the powder,were systematically varied to elucidate the influence of solid powder matter on the dynamics of gliding arc discharge(GAD).The discharge images were captured by ICCD and digital camera to investigate the mass transfer characteristics of GS-GAD,and the electrical parameters,such as the effective values of voltage,current,and discharge power were record to reveal the discharge characteristics of *** results demonstrate that powder undergoes spontaneous movement towards the upper region of the gliding arc due to the influence of electric field *** the discharge voltage,decreasing relative dielectric constant of the powder and reducing the electrode-to-sieve-plate distance all contribute to a greater involvement of powder in the GAD process,subsequently resulting in an enhanced powder concentration within the GAD ***,powder located beneath the gliding arc experiences downward resistance caused by the opposing gas flow and *** gas flow rate notably hampers the powder concentration within the discharge region,and the velocity of powder motion in the upper part of the GAD region is *** the condition of electrode-to-sieve-plate distance of 30 mm,gas flow rate of 1.5 L/min,and peak-to-peak voltage of 31 kV,the best combination of arc gliding and powder spark discharge phenomena can be achieved with the addition of Al_(2)O_(3) powder.

关键词： gliding arc discharge atmospheric pressure plasma multiphase discharge mass transfer

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基于小波域改进HMT模型的图像恢复算法

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激光与红外 2006年第9期36卷 911-914页

作者：朱亚平沈庭芝北京理工大学信息科学技术学院电子工程系北京100081

针对图像恢复中的边缘模糊问题,提出了一种基于小波域改进隐马尔可夫树(IHMT)模型的图像恢复算法。IHMT模型更多描述了相邻尺度小波系数的互相关性,能准确刻画自然图像小波系数的统计特性。本文从图像恢复的贝叶斯框架出发,将简化的IHM... 详细信息

针对图像恢复中的边缘模糊问题,提出了一种基于小波域改进隐马尔可夫树(IHMT)模型的图像恢复算法。IHMT模型更多描述了相邻尺度小波系数的互相关性,能准确刻画自然图像小波系数的统计特性。本文从图像恢复的贝叶斯框架出发,将简化的IHMT模型作为图像小波域的先验模型,构造正则化约束进行图像恢复。采用近似等价的方法,将含有混合密度的恢复方程简化为单一密度求解。实验结果表明,该算法能有效再现图像的边缘信息,提高峰值信噪比。

关键词：改进隐马尔可夫树模型图像恢复小波最大后验概率

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A Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu2+-Neocuproine Coordination Interactions

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Chinese Journal of Polymer Science 2024年第10期42卷 1425-1434页

作者： Xiao-Ming An Yi-ping Wang Tang-Song zhu Chong Xing Xu-Dong Jia Qiu-Hong Zhang Key Laboratory of High Performance Polymer Material and Technology of MOE Department of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringNanjing University State Key Laboratory of Coordination Chemistry Nanjing University

Elastomers with high mechanical toughness can guarantee their durability during service life. Self-healing ability, as well as recyclability, can also extend the life of materials and save the consuming cost of the materials. Many efforts have been dedicated to promoting the mechanical toughness as well as the self-healing capability of elastomers at the same time, while it remains a challenge to balance the trade-off between the above properties in one system. Herein we proposed a molecular design driven by dual interactions of acylsemicarbazide hydrogen bonding and Cu2+-neocuproine coordination simultaneously. By introducing the reversible multiple hydrogen bonds and strong coordination bonds, we successfully fabricated an extremely tough and self-healing elastomer. The elastomer can achieve an impressive top-notch toughness of 491 MJ/m3. Furthermore, it boasted rapid elastic restorability within 10 min and outstanding crack tolerance with high fracture energy（152.6kJ/m2）. Benefiting from the combination of dynamic interactions, the material was able to self-repair under 80 ℃ conveniently and could be reprocessed to restore the exceptional mechanical properties.

关键词： Hydrogen bond Metal-ligand coordination Self-healing Ultra-tough elastomer

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复杂物流网络下的应急物资分配模型

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数学的实践与认识 2016年第19期46卷 133-141页

作者：朱娜郑亚平绵阳师范学院交通运输与管理学院四川绵阳621000

在大规模紧急救援的背景下,研究面向复杂网络的应急物流系统中多出救点、多受灾点的物资分配问题具有重要意义.针对一次性消耗系统,以应急时间、出救点数量、应急运输成本为优化目标,在车辆运载能力等限制条件下提出多目标优化模型,并采... 详细信息

在大规模紧急救援的背景下,研究面向复杂网络的应急物流系统中多出救点、多受灾点的物资分配问题具有重要意义.针对一次性消耗系统,以应急时间、出救点数量、应急运输成本为优化目标,在车辆运载能力等限制条件下提出多目标优化模型,并采用"矢量投影-理想点法"对模型进行求解;最后,通过算例验证了模型的合理性和有效性.

关键词：复杂网络应急物资分配矢量投影-理想点法

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马克思“美好生活论”的三重维度

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北京交通大学学报（社会科学版） 2022年第1期21卷 24-29页

作者：汪康朱亚平安徽大学马克思主义学院安徽合肥230601 合肥工业大学马克思主义学院安徽合肥230601

“美好生活”一直是人类所追求的目标。遵循唯物史观的基本立场,马克思通过对资本主义社会中人的生活的异化状态的深刻批判,确立了关于“美好生活”的基本观点。在马克思的语境下,美好生活主要包含三重维度意蕴:从价值维度来看,人的自... 详细信息

“美好生活”一直是人类所追求的目标。遵循唯物史观的基本立场,马克思通过对资本主义社会中人的生活的异化状态的深刻批判,确立了关于“美好生活”的基本观点。在马克思的语境下,美好生活主要包含三重维度意蕴:从价值维度来看,人的自由而全面发展是“美好生活”的价值旨归;从需要维度来看,“美好生活需要”是一个由生存性需要到发展性需要、再到“美好生活需要”的历史的动态范畴;从实践维度来看,劳动是人民创造“美好生活”的现实手段。

关键词：马克思美好生活社会主要矛盾唯物史观

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黑色素的合成与美白产品的研究进展

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华东师范大学学报（自然科学版） 2016年第2期 1-8页

作者：叶希韵朱萍亚华东师范大学生命科学学院上海200241

随着环境污染对大气臭氧层的不断破坏,越来越多的紫外线照射到地球表面,加重了人类皮肤色素沉积异常.本文将介绍黑色素的合成过程,并综述黑色素合成过程中的关键限速酶——酪氨酸酶(TYR)的调控方式和相关信号通路的最新研究进展,还介绍... 详细信息

随着环境污染对大气臭氧层的不断破坏,越来越多的紫外线照射到地球表面,加重了人类皮肤色素沉积异常.本文将介绍黑色素的合成过程,并综述黑色素合成过程中的关键限速酶——酪氨酸酶(TYR)的调控方式和相关信号通路的最新研究进展,还介绍了影响黑色素合成的重要因素,为黑色素抑制剂的研发提供理论依据.此外,本文还综述了目前市场上常见的几类美白产品及其特点,旨在让人们重视肌肤色素沉着问题,并关注对皮肤黑色素产生进行科学护理.

关键词：黑色素黑色素合成酪氨酸酶调控方式美白产品

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Predicting the prognosis of hepatic arterial infusion chemotherapy in hepatocellular carcinoma

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2380-2393页

作者： Qi-Feng Wang Zong-Wei Li Hai-Feng Zhou Kun-Zhong zhu ya-Jing Wang ya-Qin Wang Yue-Wei Zhang Department of Hepatobiliary Pancreatic Center Beijing Tsinghua Changgung Hospital Affiliated to Tsinghua UniversityBeijing 102218China Department of Hepatobiliary and Pancreatic Surgery Qinghai University Affiliated HospitalXining 810000Qinghai ProvinceChina

Hepatic artery infusion chemotherapy(HAIC)has good clinical efficacy in the treatment of advanced hepatocellular carcinoma(HCC);however,its efficacy *** review summarized the ability of various markers to predict the efficacy of HAIC and provided a reference for clinical *** of October 25,2023,51 articles have been retrieved based on keyword predictions and *** eligible articles were selected for inclusion in this *** literature analysis found that methods used to predict the efficacy of HAIC include serological testing,gene testing,and imaging *** above indicators and their combined forms showed excellent predictive effects in retrospective *** review summarized the strategies currently used to predict the efficacy of HAIC in middle and advanced HCC,analyzed each marker's ability to predict HAIC efficacy,and provided a reference for the clinical application of the prediction system.

关键词： Hepatocellular carcinoma Hepatic artery infusion chemotherapy Prediction Prognosis Imaging Biomarkers Genomics

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A bibliometric analysis of molybdenum-based nanomaterials in the biomedical field

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Tungsten 2024年第1期6卷 17-47页

作者： Zhi-Qiang Wang ya-Wen Pan Jing Wu Hong-Bin Qi Shuang zhu Zhan-Jun Gu School of Science China University of GeosciencesBeijing 100083China CAS Key Laboratory for Biomedical Eff ects of Nanomaterials and Nanosafety Institute of High Energy PhysicsBeijing 100049China CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of ChinaChinese Academy of SciencesBeijing 100190China College of Materials Science and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049China

Molybdenum(Mo)-based nanomaterials have been widely used in biomedical fields due to their various nanostructures and unique physical/chemical *** various reviews have described the development of Mo-based materials in the biomedical field,an objective and comprehensive summary and analysis of research trends in this field is still ***,we used the bibliometric analysis method to analyze all relevant literature on the biological application of Mobased nanomaterials in recent ***,we use bibliometric tools to analyze the dataset by year,country/region,institution and research hotspot to obtain the research ***,based on objectively identified research hotspots,the biomedical applications of Mo-based nanomaterials are reviewed comprehensively,mainly including sensors,cancer imaging/therapy and antibacterial ***,we discussed the application prospects and challenges of Mo-based *** article provides a new perspective to understand the current research progress and further promote the development of Mobased nanomaterials in biomedical research.

关键词： Molybdenum Nanomaterial Biomedicine Bibliometric analysis

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