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Design and test results of a low-noise readout integrated circuit for high-energy particle detectors

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Nuclear Science and Techniques 2010年第1期21卷 44-48页

作者： ZHANG mingming chen Zhongjian ZHANG Yacong LU Wengao JI Lijiu Key Laboratory of Microelectronic Devices and Circuits Institute of Microelectronics Peking University Beijing 100871 China

A low-noise readout integrated circuit for high-energy particle detector is *** noise of charge sensitive amplifier was suppressed by using single-side amplifier and resistors as source ***-time semi-Gaussian filter is chosen to avoid switch *** peaking time of pulse shaper and the gain can be programmed to satisfy *** readout integrated circuit has been designed and fabricated using a 0.35 μm double-poly triple-metal CMOS *** results show the functions of the readout integrated circuit are *** equivalent noise charge with no detector connected is 500–700 e in the typical mode,the gain is tunable within 13–130 mV/fC and the peaking time varies from 0.7 to 1.6 μs,in which the average gain is about 20.5 mV/fC,and the linearity reaches 99.2%.

关键词：读出集成电路高能粒子探测器低噪声设计测试 CMOS工艺峰值时间单端放大器

CoB and BN composites enabling integrated adsorption/catalysis to polysulfides for inhibiting shuttle-effect in Li-S batteries

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Journal of Energy Chemistry 2021年第8期30卷 220-228,I0005页

作者： Tianli Wu Ting Yang Jizong Zhang Xuewen Zheng Kunlin Liu chengyang Wang mingming chen Key Laboratory for Green Chemical Technology of MOE School of Chemical Engineering and TechnologyTianjin University300072 TianjinChina Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) 300072 TianjinChina

Lithium-sulfur(Li-S)batteries are hampered by the infamous shuttle effect and slow redox kinetics,resulting in rapid capacity ***,a bifunctional catalysis CoB/BN@rGO with integrated structure and synergy effect between adsorption and catalysis is proposed to solve the above *** integrated CoB and BN are simultaneously and uniformly introduced on the rGO substrate through a one-step calcination strategy,applied to modify the cathode side of PP *** transition metal borides can catalyze the conversion of lithium polysulfides(Li_(2)Sn,n≥4),whereas the bond of B-S is too weak to absorb *** BN introduced can effectively restrict the diffusion of polysulfides via strong chemisorption with LiSnLi+…N,while the rGO substrate ensures smooth electron transfer for redox ***,through the integrated adsorption/catalysis,the shuttle effect is suppressed,the kinetics of redox reaction is enhanced,and the capacity decay is *** CoB/BN@rGO modified PP separator,the Li-S batteries with high initial capacity(1450 mAh g^(-1)at 0.35 mA cm^(-2))and long-cycle stability(700 cycles at 1.74 mA cm^(-2)with a decay rate of 0.032%per cycle)are *** work provides a novel insight for the preparation of bifunctional catalysis with integrated structure for long-life Li-S batteries.

关键词： Integrated structure Synergy effect Bifunctional catalysis Separator Li-S batteries

Photocatalytic removal of heavy metal ions and antibiotics in agricultural wastewater:A review

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Journal of Semiconductors 2023年第11期44卷 26-41页

作者： Jiaxin Song Malik Ashtar Ying Yang Yuan Liu mingming chen Dawei Cao School of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013China

In recent years,the treatment of agricultural wastewater has been an important aspect of environmental *** purpose of photocatalytic technology is to degrade pollutants by utilizing solar light energy to stimulate the migration of photocarriers to the surface of photocatalysts and occur reduction-oxidation reaction with pollutants in agricultural *** technology has the characteristics of high efficiency,sustainability,low-energy and free secondary *** is an environmental and economical method to recover water quality that only needs *** this paper,the mechanism and research progress of photocatalytic removal of heavy metal ions and antibiotics from agricultural water pollution were reviewed by combining photocatalytic degradation process with agricultural treatment *** mechanism of influencing factors of photocatalytic degradation efficiency was discussed in detail and corresponding strategies were proposed,which has certain reference value for the development of photocatalytic degradation.

关键词： photocatalysis agricultural pollution water quality remediation heavy metals antibiotics

基于阳化气阴成形理论探讨恶性肿瘤的发病机制

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中国中医药现代远程教育 2025年第2期23卷 59-62页

作者：熊乙霓陈明明陈雪莲郭旭遂宁市中医院肿瘤科四川遂宁629000

“阳化气,阴成形”出自《素问·阴阳应象大论》,概括了多种人体的生理及病理现象,尤其与现代医学中恶性肿瘤的发病密切相关。文章针对阴阳的形成、阴阳的特性、肿瘤发病的病机等进行阐述,认为“阳化气不足,阴成形太过”是肿瘤发生的根... 详细信息

“阳化气,阴成形”出自《素问·阴阳应象大论》,概括了多种人体的生理及病理现象,尤其与现代医学中恶性肿瘤的发病密切相关。文章针对阴阳的形成、阴阳的特性、肿瘤发病的病机等进行阐述,认为“阳化气不足,阴成形太过”是肿瘤发生的根本病机。故及时于恶性肿瘤发病前改善生活、饮食方式及进行中医药干预可减少肿瘤发病,或在肿瘤治疗过程中采用基于“扶阳抑阴”理论的辨证论治原则,意义重大。

关键词：阳化气,阴成形恶性肿瘤病因病机扶阳抑阴

LiPAA with Short-chain Anion Facilitating Li_(2)S_(x)(x≤4)Reduction in Lean-electrolyte Lithium–sulfur Battery

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Energy & Environmental Materials 2022年第3期5卷 877-882页

作者： Jizong Zhang mingming chen Yu Si Jian Guo Tianli Wu chengyang Wang Xiaolei Wang Key Laboratory for Green Chemical Technology of MOE School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin UniversityTianjin 300072China Department of Chemical and Materials Engineering University of AlbertaEdmonton AB T6G 1H9Canada

Lean electrolyte usage in lithium–sulfur battery(LSB)meets the demand of the high energy ***,lean condition makes the electrolyte-related interface discrete,leading to retardation of ion transfer that depends on ***,electrochemical reactions face ***,lithium polyacrylate acid(LiPAA)with short-chain anions(molecular weight of 2000)is introduced into the *** of the polysulfide(PS)-philic instinct of the short-chain PAA anions,short-chain PS is captured inside of the *** addition,LiPAA supplies Li^(+)to the short-chain PS *** strong interaction between Li_(2)S_(4)and LiPAA effectively decreases Li_(2)S_(4)migration to the anode during *** a sense,the ion mass transfer pattern is thus changed comparing to traditional long-way mode between cathode and *** intermittent titration technique(GITT)proves that the interfacial reaction resistance is greatly decreased in the region where Li_(2)S_(x)(x≤4)reduction contributes *** the same time,the reversibility of electrochemical reduction/oxidation is *** to the accelerated Li_(2)S_(x)(x≤4)reduction,Li implanting of only 0.3 wt.%plus O introduction up to 1.4 wt.%enables the LSB perform well even with 1/4 of regular electrolyte dosage(5μL mg^(-1))and high-sulfur loading(4.2 mg cm^(-2)),increasing its rate capacity C_(0.8/0.5)from 52.6%(without the LiPAA)to 92.3%(with the LiP AA)as well as a capacity of 518.7 mAh g^(-1)after 400 cycles at 0.8 mA cm^(-2).

关键词： lean electrolyte polysulfides targeting transfer mass transfer interfacial reaction

Mechanistic insights into the active intermediates of 2,6-diaminopyridine dinitration

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Chinese Journal of Chemical Engineering 2023年第4期56卷 160-168页

作者： Junao Zhu Zhirong Yang Yuanhan chen mingming chen Zhen Liu Yueqiang Cao Jing Zhang Gang Qian Xinggui Zhou Xuezhi Duan State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Mechanistic understanding of the active intermediates of 2,6-diaminopyridine(DAP) dinitration in the concentrated nitric-sulfuric acid system is of crucial importance for the selectivity control of target product, i.e., 2,6-diamino-3,5-dinitropyridine(DADNP). The active intermediates determining the product selectivity are theoretically studied. The HSO_(4)^(-)-NO_(2)^(+) complex is proposed as the dominant active nitrating intermediate for the first time, which shows low energy barrier(i.e., 10.19 kcal·mol^(-1),1 kcal = 4.186 k J) for direct dinitration of DAP to DADNP. The formed water during the reaction results in not only the formation of less active SO_(4)^(2-)-NO_(2)^(+) complex, but also the occurance of DAP sulfonation(DAP-SO_(3)H intermediate)to facilitate the formation of mononitration byproduct. Meanwhile, the accompanied thermal effects cause the generation of undesirable pyridine-NHNO_(2) intermediate, which is difficult to be rearranged to yield DADNP, inhibiting the reaction and thus giving low DAP conversion. The insights reported here elucidates the importance of thermal effects elimination and water content control, confirmed experimentally in the batch-and micro-reaction systems.

关键词： 2,6-Diaminopyridine Nitration mechanism Active intermediates Thermal effects Negative water effects

An ultrahigh strength steel produced through deformation-induced ferrite transformation and Q&P process

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Science China(Technological Sciences) 2012年第7期55卷 1827-1832页

作者： chen mingming WU RiMing LIU HePing WANG Li SHI Jie DONG Han JIN XueJun School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Material Science and Engineering North University of ChinaTaiyuan 030051China Baosteel Research and Development Technology Center Shanghai 201900China National Engineering Research Center of Advanced Steel Technology(NERCAST) Central Iron and Steel Research Institute(CISRI)Beijing 100081China

In this work,DIFT technology and Q&P process were combined in order to introduce ultrafine-grained ferrite into the matrix of martensite and retained austenite to develop a new kind of advanced high strength steel,and two kinds of steels were investigated by this novel combined *** newly designed process resulted in a sophisticated microstructure of a large amount of ferrite(about 5 m in diameter),martensite and a considerable amount of retained austenite for TRIP 780 *** ultimate tensile strength can reach about 1200 MPa with elongation above 16% for TRIP 780,that is much higher than the one solely treated by Q&P *** tests showed that both steels with the novel combined process achieved a good combination of strength and ductility,indicating that the new process is promising for the new generation of advanced high strength steels.

关键词： deformation induced ferrite transformation(DIFT) quenching and partitioning(Q&P) microstructure mechanical property

–C≡N functionalizing polycarbonate-based solid-state polymer electrolyte compatible to high-voltage cathodes

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Journal of Energy Chemistry 2024年第11期98卷 422-431页

作者： Shuo Ma Yanan Zhang Donghui Zhang Yating Zhang Wenbin Li Kemeng Ji Zhongli Tang mingming chen Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin UniversityTianjin 300350China The Research Center of Chemical Engineering Tianjin UniversityTianjin 300350China

Solid-state polymer electrolytes(SPEs) capable of withstanding high voltage are considered to be key for next-generation energy storage devices with inherent safety as well as high energy *** study involves the rational design of solid-state-C≡N functionalized P(VEC_1-CEA_(0.3))/LiTFSI@CE SPEs and its synthesis by in-situ free radical polymerization of vinyl ethylene carbonate(VEC) and 2-cyanoethyl acrylate(CEA).In situ polymerization yields electrode/electrolyte interfaces with low interfacial resistance,forming a stable SEI layer enriched with LiF,Li_(3)N,and RCOOLi,ensuring stable Li plating/stripping for over 1400 ***-C≡N moiety renders the αH on the adjacent αC positively charged,thereby endowing it with the capability to anchor TFSI^(-).Simultaneously,the incorporation of-C≡N moiety diminishes the electron-donating ability of the C=O,C-O-C,and-C≡N functional groups,facilitating not only the ion conductivity enhancement but also a more rapid Li^(+)migration proved by DFT theoretical calculations and Raman *** room temperature,t_(Li+) of 0.60 for P(VEC_1-CEA_(0.3))/LiTFSI@CE SPEs is achieved when the ionic conductivity σ_(Li+)is 2.63×10^(-4) S cm^(-1) and the electrochemical window is expanded to5.0 *** coin cells with high-areal-loading cathodes and the 6.5-mAh pouch cell,exhibit stable charge/discharge *** 25℃,the 4.45-V Li|P(VEC_1-CEA_(0.3))/LiTFSI@CE|LiCoO_(2) battery performs stable cycling over 200 cycles at 0.2 C,with a capacity retention of 82.1%.

关键词： Lithium-metal batteries High-voltage Solid-state polymer electrolytes –C≡N In situ polymerization

Preparation of mesoporous MgO-templated carbons from phenolic resin and their applications for electric double-layer capacitors

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Chinese Science Bulletin 2013年第9期58卷 992-997页

作者： LIU WenJie WANG chengYang WANG JiuZhou JIA Fan ZHENG JiaMing chen mingming Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin University

Mesoporous carbons were synthesized using thermoplastic phenolic resin(PF) as carbonaceous precursor and magnesium citrate as template *** structure was determined as ink-bottle-like geometry through TEM,N2 adsorption analysis combined with TG *** porous carbons prepared were then applied as electrode material for electric double-layer *** capacitor performance was examined in 30 wt% KOH aqueous solution by cyclic voltammetry and galvanostatic charge/discharge *** carbon prepared with MgO/PF mass ratio of 8/2 had a BET surface area of 1920 m2 g-1 and exhibited a capacitance of 220 F g-1 at a current density of 50 mA ***,the carbon with the ratio of 4/6 had the optimize proportion of mesopores,which ensures its good rate performance that up to 98.3%,expressed as the ratio of the capacitance measured at 1000 mA g-1 against that at 50 mA g-1.

关键词：双电层电容器热塑性酚醛树脂碳原子 MgO 介孔模板透射电子显微镜应用