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Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Frontiers of Chemical Science and Engineering 2023年第11期17卷 1718-1727页

作者： Shiqing Ma chundong peng Zeyu Jia Yanmei Feng Kai Chen Hao Ding Daimei Chen Zhong-Yong Yuan Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Material Sciences and TechnologyChina University of GeosciencesBeijing 100083China School of Materials Science and Engineering Nankai UniversityTianjin 300350China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoringand Pollution Control School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China

In recent years,organic photocatalyst under visible-light absorption has shown significant potential for solving environmental ***,it is still a great challenge for constructing a highly active organic photocatalyst due to the low separation efficiency of photogenerated ***,an effective and robust photocatalyst perylene-3,4,9,10-tetracarboxylic diamide/boron nitride quantum dots(PDI/BNQDs),consisting of selfassemble PDI withπ–πstacking structure and BNQDs,has been constructed and researched under visible light *** PDI/BNQDs composite gradually increases organic pollutant photodegradation with the loading amount of *** 10 mL of BNQDs solution added(PDI/BNQDs-10),the organic pollutant photodegradation performance reaches a maximum,about 6.16 times higher with methylene blue and 1.68 times higher with ciprofloxacin than that of pure PDI *** enhancement is attributed to improved separation of photogenerated carriers from self-assembled PDI by BNQDs due to their preeminent ability to extract *** work is significant for the supplement of PDI supramolecular composite *** believe that this photocatalytic design is capable of expanding organic semiconductors’potential for their applications in photocatalysis.

关键词： PDI boron nitride quantum dots photocatalysis hole transfer

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Ecological wetland paradigm drives water source improvement in the stream network of Yangtze River Delta

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Journal of Environmental Sciences 2021年第12期33卷 55-72页

作者： Weidong Wang Ting Yang Weibing Guan Weixi peng Ping Wu Bin Zhong chundong Zhou Qinghua Chen Rongbin Zhang Kewen Xu Chengqing Yin Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China Jiaxing Water Conservancy Investment Co.Ltd. Jiaxing 314033China Water Resources&Hydroelectric Prospecting&Design Research Institute of Jiaxing City Jiaxing 314033China Haining Clean Source Water Co.Ltd. Haining 314400China Jiaxing Qiuyuan Monitoring Technology Co.Ltd. Jiaxing 314006China

Jiaxing created a precedent using bypass riparian marshes to purify micro-polluted water sources in ***-wetland complex with constructed root channel technology becomes a paradigm which can be analogized as"human-body wetland model"based on bionics or *** plant-bed/ditch system with highly active land/water ecotone interfaces,especially meandering boundaries,breeds many biochemical reactions"living areas".Optimization of hydraulic regulation promotes redox environment alternations and wetland treatment *** we reported a series of upgrades and performances in Guanjinggang wetland after the Shijiuyang *** reform of plant-bed/ditch system played a vital *** root channel zone was main force of wetland purification,and temporally the treatment effect was higher in low-temperature seasons indicating non-temperature dependent mechanisms *** pollution comprehensive index improved steadily from IV to III,and comprehensive pollution load was reduced by ca.40%–60%.Comprehensive evaluation function value further showed the gradients purification effect of the upgraded *** wetlands ameliorated source water quality,and reduced drinking water treatment reagents,thereby bringing about economic *** wetlands operation,people can see how the micro-polluted surface water becomes clear and clean,so promoting a significant social *** a viable component of urban green space,wetlands could beautify regional eco-environment,freshen the air,increase urban ecological taste,and enhance the eco-environmental protection ***,the multifunctional service values and indirect benefits are *** ecological wetlands provide a typical paradigm for water pollution remediation in developing countries and plays a leading role in technology engineering radiation effect.

关键词： Pond-wetland combination Constructed root channel technology Plant-bed/ditch system Semi-subsurface flow wetland Human-body wetland model

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Design of the Prototype Negative Ion Source for Neutral Beam Injector at ASIPP

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Plasma Science and Technology 2016年第9期18卷 954-959页

作者： WEI Jianglong XIE Yahong LIANG Lizhen GU Yuming YI Wei LI Jun HU chundong XIE Yuanlai JIANG Caichao TAO Ling SHENG peng XU Yongjian Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China

In order to support the design, manufacture and commissioning of the negative- ion-based neutral beam injection （NBI） system for the Chinese Fusion Engineering Test Reactor （CFETR）, the Hefei utility negative ion test equipment with RF source （HUNTER） was proposed at ASIPP. A prototype negative ion source will be developed at first. The main bodies of plasma source and accelerator of the prototype negative ion source are similar to that of the ion source for EAST-NBI. But instead of the filament-arc driver, an RF driver is adopted for the prototype negative ion source to fulfill the requirement of long pulse operation. A cesium seeding system and a magnetic filter are added for enhancing the negative ion density near the plasma grid and minimizing co-extracted electrons. Besides, an ITER-like extraction system is applied inside the accelerator, where the negative ion beam is extracted and accelerated up to 50 kV.

关键词： negative ion source neutral beam injection CFETR

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UPF1 increases amino acid levels and promotes cell proliferation in lung adenocarcinoma via the eIF2α-ATF4 axis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第10期23卷 863-875页

作者： Lei FANG Huan QI peng WANG Shiqing WANG Tianjiao LI Tian XIA Hailong PIAO chundong GU Department of Thoracic Surgery Lung Cancer Diagnosis and Treatment Center of DalianThe First Affiliated Hospital of Dalian Medical UniversityDalian 116011China CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Up-frameshift 1(UPF1),as the most critical factor in nonsense-mediated messenger RNA(mRNA)decay(NMD),regulates tumor-associated molecular pathways in many ***,the role of UPF1 in lung adenocarcinoma(LUAD)amino acid metabolism remains largely *** this study,we found that UPF1 was significantly correlated with a portion of amino acid metabolic pathways in LUAD by integrating bioinformatics and *** further confirmed that UPF1 knockdown inhibited activating transcription factor 4(ATF4)and Ser51 phosphorylation of eukaryotic translation initiation factor 2α(eIF2α),the core proteins in amino acid metabolism *** addition,UPF1 promotes cell proliferation by increasing the amino-acid levels of LUAD cells,which depends on the function of ***,UPF1 mRNA expression is abnormal in LUAD tissues,and higher expression of UPF1 and ATF4 was significantly correlated with poor overall survival(OS)in LUAD *** findings reveal that UPF1 is a potential regulator of tumor-associated amino acid metabolism and may be a therapeutic target for LUAD.

关键词： Up-frameshift 1(UPF1) Activating transcription factor 4(ATF4) Amino acid metabolism Lung adenocarcinoma

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EAST中性束注入控制系统设计

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强激光与粒子束 2014年第10期26卷 230-235页

作者：盛鹏胡纯栋宋士花刘胜 NBI团队中国科学院等离子体物理研究所合肥230031

中性束注入(NBI)是磁约束核聚变装置等离子体加热和电流驱动的重要手段。依据东方超环(EAST)NBI实验运行特点,设计了基于网络通讯的集散式控制系统。NBI控制系统采用计算机网络技术,按照控制层次分为远程监控层、服务器控制层和现场控制... 详细信息

中性束注入(NBI)是磁约束核聚变装置等离子体加热和电流驱动的重要手段。依据东方超环(EAST)NBI实验运行特点,设计了基于网络通讯的集散式控制系统。NBI控制系统采用计算机网络技术,按照控制层次分为远程监控层、服务器控制层和现场控制层,三层控制结构易于系统功能扩展与设备升级。一条束线的两个离子源可以独立运行控制,这为EAST第二条束线控制扩展奠定基础。实验表明,NBI控制系统具备了远程监控、连锁保护和数据处理功能,满足了NBI实验运行的自动化和可视化的需求。

关键词：中性束注入控制系统东方超环集散控制

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基于经皮能量传输的人工肛门括约肌生物电磁相容性研究

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上海交通大学学报 2018年第8期52卷 997-1002页

作者：昝鹏张春东刘颜凯高志远上海大学机电工程与自动化学院上海200072 上海市电站自动化技术重点实验室上海200072

针对人工肛门括约肌的生物电磁相容性问题,通过对人体断层照片进行图像分割实现了组织的划分和识别,建立了包含40种生物组织的人体电磁模型.运用时域有限差分法,计算了经皮能量传输系统对生物组织产生的辐射剂量,获得了人体不同组织在... 详细信息

针对人工肛门括约肌的生物电磁相容性问题,通过对人体断层照片进行图像分割实现了组织的划分和识别,建立了包含40种生物组织的人体电磁模型.运用时域有限差分法,计算了经皮能量传输系统对生物组织产生的辐射剂量,获得了人体不同组织在该电磁场中的比吸收率分布情况,并根据国际人体电磁安全标准对其进行了深入分析.仿真结果表明,经皮能量传输系统在发射功率为1.5W,谐振频率为358kHz的实验环境下对人体组织具有良好的生物相容性.

关键词：人工肛门括约肌经皮能量传输时域有限差分法生物电磁相容性

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实时反馈控制在离子源放电实验中的应用

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核技术 2007年第6期30卷 537-542页

作者：盛鹏胡纯栋刘胜宋士花谢亚红中国科学院等离子体物理研究所合肥230031

本文介绍了一种应用于离子源进气量控制的实时反馈控制系统。系统采用A/D模数转换和D/A数模转换卡完成系统数字信号处理的输入与输出。系统的控制程序采用Linux内核支持的RTLinux实时操作系统作为底层操作系统并进行了适当优化裁剪,获... 详细信息

本文介绍了一种应用于离子源进气量控制的实时反馈控制系统。系统采用A/D模数转换和D/A数模转换卡完成系统数字信号处理的输入与输出。系统的控制程序采用Linux内核支持的RTLinux实时操作系统作为底层操作系统并进行了适当优化裁剪,获得了适合系统控制要求的实时控制程序开发环境,并应用了灵活控制实验中离子源进气量的控制算法。实验首次获得离子源4.5s稳定放电的实验结果。

关键词：实时反馈控制 RTLinux 离子源数字信号处理

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DNA Synthesis during Endomitosis Is Stimulated by Insulin via the PI3K/Akt and TOR Signaling Pathways in the Silk Gland Cells of Bombyx mori

DNA Synthesis during Endomitosis Is Stimulated by Insulin vi...

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第十二届家（柞）蚕遗传育种暨良种繁育学术研讨会

作者： Yaofeng Li Xiangyun Chen Xiaofang Tang chundong Zhang La Wang peng Chen Minhui Pan Cheng Lu State Key Laboratory of Silkworm Genome Biology Southwest University Department of Biochemistry and Molecular Biology Chongqing Medical University Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry Southwest University

Silk gland cells undergo multiple endomitotic cell cycles during silkworm larval ontogeny. Our previous study demonstrated that feeding is required for continued endomitosis in the silk gland cells of silkworm larvae. Furthermore, the insulin signaling pathway is closely related to nutritional signals. To investigate whether the insulin signaling pathway is involved in endomitosis in silk gland cells, in this study, we initially analyzed the effects of bovine insulin on DNA synthesis in endomitotic silk gland cells using 5-bromo-2’-deoxyuridine（Brd U） labeling technology, and found that bovine insulin can stimulate DNA synthesis. Insulin signal transduction is mainly mediated via phosphoinositide 3-kinase（PI3K）/Akt, the target of rapamycin（TOR） and the extracellular signal-regulated kinase（ERK） pathways in vertebrates. We ascertained that these three pathways are involved in DNA synthesis in endomitotic silk gland cells using specific inhibitors against each pathway. Moreover, we investigated whether these three pathways are involved in insulin-stimulated DNA synthesis in endomitotic silk gland cells, and found that the PI3K/Akt and TOR pathways, but not the ERK pathway, are involved in this process. These results provide an important theoretical foundation for the further investigations of the mechanism underlying efficient endomitosis in silk gland cells.

关键词： Bombyx mori silk gland DNA synthesis insulin signaling

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低温数据采集在中性束注入中的设计与应用

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低温工程 2006年第1期 16-20页

作者：盛鹏胡纯栋刘胜中国科学院等离子体物理研究所合肥230031

低温系统是中性束注入器(NB I)获得高真空的有效手段,因此对低温系统的测量和监控的能力将直接影响真空系统的质量。从硬件和软件上设计了一套可以精确测量和监控液氮温度和液氦温度的温度采集系统。硬件上根据液氮和液氦温度差别大的特... 详细信息

低温系统是中性束注入器(NB I)获得高真空的有效手段,因此对低温系统的测量和监控的能力将直接影响真空系统的质量。从硬件和软件上设计了一套可以精确测量和监控液氮温度和液氦温度的温度采集系统。硬件上根据液氮和液氦温度差别大的特点,采用Pt100和Cernox两种电阻温度传感器并设计了相匹配的信号放大、传输、A/D采集及转换电路;软件上采用面向对象编程方法设计系统控制程序,使系统具有很高的重用性和扩充性。

关键词：中性束注入(NBI) 低温系统温度采集系统面向对象编程

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Experimental results of a magnetic field modification to the radio frequency driver of a negative ion source

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Plasma Science and Technology 2024年第4期26卷 162-167页

作者：谢俊炜谢亚红韦江龙梁立振彭旭峰杨宇雯顾玉明胡纯栋谢远来 Institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China

A magnetic field produced by a current flowing through the plasma grid(PG) is one of the solutions to reduce the collisional loss of negative ions in a negative ion source, which reduces the electron temperature in front of the PG. However, the magnetic field diffused into the driver has some influence on the plasma outflowing. In order to investigate the effect of changing this magnetic field on the outflowing of plasma from the driver, a circular ring(absorber) of high permeability iron has been introduced at the driver exit, which can reduce the magnetic field around it and improve plasma outflowing. With the application of the absorber, the electron density is increased by about 35%, and the extraction current measured from the extraction grid is increased from 1.02 A to 1.29 A. The results of the extraction experiment with cesium injection show that both the extraction grid(EG) current and H-current are increased when the absorber is introduced.

关键词： neutral beam injection negative ion source magnetic filter radio frequency ion source

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