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SEU sensitivity and large spacing TMR efficiency of Kintex-7 and Virtex-7 FPGAs

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Science China(Information Sciences) 2022年第2期65卷 259-260页

作者： Chang CAI Bingxu NING Xue FAN tianqi liu Lingyun KE Gengsheng CHEN Jian YU Ze HE Liewei XU Jie liu Institute of Modern Physics Chinese Academy of Sciences State Key Laboratory of ASIC and System Fudan University School of Nuclear Science and Technology University of Chinese Academy of Sciences The Fudan Microelectronics Group Fudan University School of Electronic Engineering and School of Microelectronics Chengdu Technological University

Dear editor,The static random-access memory (SRAM)-based field programmable gate arrays (FPGAs) mainly composed of extensive configurable logic blocks (CLBs),high-speed embedded memories (BRAMs),and a set of programmable routing,wires or switch boxes[1,2]are commonly used in avionic and space fields because of their advanced performance and high flexible in-field reprogramming abilities[2].However,the advanced SRAM-based FPGAs are susceptible to radiation effects,

关键词： Microelectronics Radiation effects Space electronics Radiation tolerance FPGA Reliability

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An Enhanced Data-Driven Model for Lithium-Ion Battery State-of-Health Estimation with Optimized Features and Prior Knowledge

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Automotive Innovation 2022年第2期5卷 134-145页

作者： Huanyang Huang Jinhao Meng Yuhong Wang Lei Cai Jichang Peng Ji Wu Qian Xiao tianqi liu Remus Teodorescu College of Electrical Engineering Sichuan UniversityChengduChina Faculty of Computer Science and Engineering Shanxi Key Laboratory for Network Computing and Security TechnologyXi’an University of TechnologyXi’anChina Smart Grid Research Institute Nanjing Institute of TechnologyNanjingChina Department of Automation University of Science and Technology of ChinaHefeiChina Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjinChina Department of Energy Technology Aalborg University9220 AalborgDenmark

In the long-term prediction of battery degradation,the data-driven method has great potential with historical data recorded by the battery management *** paper proposes an enhanced data-driven model for Lithium-ion(Li-ion)battery state of health(SOH)estimation with a superior modeling procedure and optimized *** Gaussian process regression(GPR)method is adopted to establish the data-driven estimator,which enables Li-ion battery SOH estimation with the uncertainty level.A novel kernel function,with the prior knowledge of Li-ion battery degradation,is then introduced to improve the mod-eling capability of the *** for the features,a two-stage processing structure is proposed to find a suitable partial charging voltage profile with high *** the first stage,an optimal partial charging voltage is selected by the grid search;while in the second stage,the principal component analysis is conducted to increase both estimation accuracy and computing *** of the proposed method are validated on two datasets from different Li-ion batteries:Compared with other methods,the proposed method can achieve the same accuracy level in the Oxford dataset;while in Maryland dataset,the mean absolute error,the root-mean-squared error,and the maximum error are at least improved by 16.36%,32.43%,and 45.46%,respectively.

关键词： Li-ion battery State of health Gaussian process regression Kernel function Feature optimization

褐煤爆炸冲击气流传播特性与CO生成特性数值模拟

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爆炸与冲击 2019年第10期39卷 150-158页

作者：刘天奇沈阳航空航天大学安全工程学院

为研究褐煤爆炸过程中冲击气流传播特性及CO毒气生成特性,以水平管道煤尘爆炸实验装置为依托,按1∶1比例建立水平管道几何模型,在构建煤尘爆炸动力传播特性数学模型的基础上,展开冲击气流传播特性与CO生成特性模拟分析。结果表明:通过... 详细信息

为研究褐煤爆炸过程中冲击气流传播特性及CO毒气生成特性,以水平管道煤尘爆炸实验装置为依托,按1∶1比例建立水平管道几何模型,在构建煤尘爆炸动力传播特性数学模型的基础上,展开冲击气流传播特性与CO生成特性模拟分析。结果表明:通过对比不同时刻褐煤爆炸火焰传播距离模拟值与实测值,验证了模拟方法的可靠性。以冲击气流传播速度模拟值划分空间区域,得到:z=0~0.1 m为初始扬尘区,z=0.1~0.42 m为冲击气流速度跃升区,z=0.42~0.98 m为冲击气流高速传播区,z=0.98~1.4 m为冲击气流缓冲区。z=0.2 m与z=0.4 m截面上距圆心越远,冲击气流传播速度越大,这是由流体流动的“壁面效应”导致的,壁面附近空隙率大于流体内部,流动时所受阻力比较小,因此出现冲击气流在近壁处流速较大的分布特征。模拟CO毒气产物生成特性发现,管内z=0.3~0.6 m为CO质量分数相对最高的空间范围,局部最高达到0.024%~0.026%。在z>0.7 m时,由于颗粒受重力作用,同时爆炸产生的高温气体受浮力作用,导致CO气体产物出现下沉的趋势。

关键词：煤尘爆炸冲击气流 CO毒气产物褐煤

超高压大系统最优恢复计划的多目标模糊决策法

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电力系统自动化 2000年第15期24卷 27-31页

作者：刘天琪四川大学电气信息学院成都610065

多层动态规划决策方法有效地解决了超高压大系统恢复计划决策问题 ,而其中分层优化方法涉及到对多个对象按照多因素排序、分类和以多项目标选择最佳决策方案的问题 ,这种综合排序及综合决策问题不易用经典方法来解决。为此 ,提出超高压... 详细信息

多层动态规划决策方法有效地解决了超高压大系统恢复计划决策问题 ,而其中分层优化方法涉及到对多个对象按照多因素排序、分类和以多项目标选择最佳决策方案的问题 ,这种综合排序及综合决策问题不易用经典方法来解决。为此 ,提出超高压大系统恢复计划决策的多因素模糊综合排序和分类方法 ,以及多目标模糊综合决策方法 ,较好地解决了该问题。仿真结果表明该方法科学。

关键词：超高压大系统多媒体目标模糊决策法电力系统

Identification of a Novel OsCYP2 Allele that Was Involved in Rice Response to Low Temperature Stress

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Phyton-International Journal of Experimental Botany 2023年第6期92卷 1743-1763页

作者： Hongxiu Gao Lin Zhu tianqi liu Xueyu Leng Zhenxing Zhu Wei Xie Haitao Lv Zhengxun Jin Ping Wu Zhongchen Zhang College of Agriculture Northeast Agricultural UniversityHarbin150030China Hulin Agricultural Technology Extension Center Hulin158400China Liaoning Academy of Agricultural Sciences Shenyang110161China Zhejiang University Hangzhou310000China

Cyclophilin(CYP)plays an important role in plant response to stress,and OsCYP2,one gene of cyclophlilin family,is involved in auxin signal transduction and stress signaling in ***,the mechanism that OsCYP2 is involved in rice response to low temperature is still *** identified a new OsCYP2 allelic mutant,lrl3,with fewer lateral roots,and the differences in shoot height,primary root length and adventitious root length increased with the growth process compared to the wild-type *** signaling pathway was also affected and became insensitive to *** transgenic rice plants with over-expression of OsCYP2 were more tolerant to low temperature than the wild-type plants,suggesting that OsCYP2 was involved in the low temperature response in *** addition,OsCYP2 negatively regulated the expression of OsTPS38,a terpene synthase gene,and was dependent on the OsCDPK7-mediated pathway in response to low temperature ***38-overexpressed transgenic line ox-2 was more sensitive to low ***,OsCYP2 may negatively regulate OsTPS38 through an OsCDPK7-dependent pathway to mediate the response to low temperature in *** results provide a new basis for auxin signaling genes to regulate rice response to low temperature stress.

关键词： Rice low temperature OsCYP2 OsTPS38 OsCDPK7

A crosslinked polymer as dopant-free hole-transport material for efficient n-i-p type perovskite solar cells

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Journal of Energy Chemistry 2021年第4期30卷 211-218页

作者： Linqin Wang Fuguo Zhang tianqi liu Wei Zhang Yuanyuan Li Bin Cai Lanlan He Yu Guo Xichuan Yang Bo Xu James M.Gardner Lars Kloo Licheng Sun Organic Chemistry Centre of Molecular DevicesDepartment of ChemistryKTH Royal Institute of TechnologySE-10044 StockholmSweden Applied Physical Chemistry Centre of Molecular DevicesDepartment of ChemistryKTH Royal Institute of TechnologySE-10044 StockholmSweden Wallenberg Wood Science Centre Department of Fibre and Polymer TechnologyKTH Royal Institute of TechnologySE-10044 StockholmSweden State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Centre on Molecular DevicesDalian University of TechnologyDalian 116024LiaoningChina

A new crosslinked polymer,called P65,with appropriate photo-electrochemical,opto-electronic,and thermal properties,has been designed and synthesized as an efficient,dopant-free,hole-transport material(HTM)for n-i-p type planar perovskite solar cells(PSCs).P65 is obtained from a low-cost and easily synthesized spiro[fluorene-9,90-xanthene]-30,60-diol(SFX-OH)-based monomer X65 through a freeradical polymerization *** combination of a three-dimensional(3 D)SFX core unit,holetransport methoxydiphenylamine group,and crosslinked polyvinyl network provides P65 with good solubility and excellent film-forming *** employing P65 as a dopant-free hole-transport layer in conventional n-i-p type PSCs,a power conversion efficiency(PCE)of up to 17.7%is *** the best of our knowledge,this is the first time a 3 D,crosslinked,polymeric dopant-free HTM has been reported for use in conventional n-i-p type *** study provides a new strategy for the future development of a 3 D crosslinked polymeric dopant-free HTM with a simple synthetic route and low-cost for commercial,large-scale applications in future PSCs.

关键词： Perovskite solar cell Hole-transport material Dopant-free Crosslinked polymer Spiro[fluorene-9,9’-xanthene](SFX)

Switching O-O bond formation mechanism between WNA and I2M pathways by modifying the Ru-bda backbone ligands of water-oxidation catalysts

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Journal of Energy Chemistry 2021年第3期30卷 815-821页

作者： Biaobiao Zhang Shaoqi Zhan tianqi liu Linqin Wang A.Ken Inge Lele Duan Brian J.J.Timmer Oleksandr Kravchenko Fei Li Marten S.G.Ahlquist Licheng Sun Department of Chemistry KTH Royal Institute of Technology10044 StockholmSweden Department of Theoretical Chemistry&Biology School of Engineering Sciences in Chemistry Biotechnology and HealthKTH Royal Institute of Technology10691 StockholmSweden Department of Materials and Environmental Chemistry Stockholm University10691 StockholmSweden Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongChina State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT–KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT)Dalian 116024LiaoningChina

Understanding the seven coordination and O-O coupling pathway of the distinguished Ru-bda catalysts is essential for the development of next generation efficient water-oxidation catalysts based on earthabundant *** work reports the synthesis,characterization and catalytic properties of a monomeric ruthenium catalyst Ru-bnda(H2 bnda=2,2’-bi(nicotinic acid)-6,6’-dicarboxylic acid)featuring steric hindrance and enhanced hydrophilicity on the *** experimental evidence with systematic density functional theory calculations on the Ru-bnda and related catalysts Ru-bda(H_(2)bda=2,2’-bipyridine-6,6’-dicarboxylic acid),Ru-pda(H_(2)pda=1,10-phenanthroline-2,9-dicarboxylic acid),and Ru-biqa(H_(2)biqa=(1,1’-biisoquinoline)-3,3’-dicarboxylic acid),we emphasized that seven coordination clearly determines presence of Ru^(Ⅴ)=O with high spin density on the ORu^(Ⅴ)=O atom,*** with radical properties,which is one of the necessary conditions for reacting through the O-O coupling ***,an additional factor to make the condition sufficient is the favorable intermolecular faceto-face interaction for the generation of the pre-reactive[Ru^(Ⅴ)=O…O=Ru^(Ⅴ)],which may be significantly influenced by the secondary coordination *** work provides a new understanding of the structure-activity relationship of water-oxidation catalysts and their potential to adopt I2M pathway for O-O bond formation.

关键词： Water oxidation Oxygen evolution Ruthenium O-O bond formation

激光熔化沉积与锻造AerMet100钢的疲劳断口形貌

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金属热处理 2017年第8期42卷 205-210页

作者：刘天琦中国航发北京航空材料研究院北京100095

采用光学显微镜、扫描电镜、能谱分析仪和三维白光干涉表面形貌仪对激光熔化沉积Aer Met100钢与锻造Aer Met100钢组织及其断裂韧度试样断口和螺栓试样疲劳断口进行了研究分析。结果表明:锻造Aer Met100钢断口组织均匀、致密,具有典型的... 详细信息

采用光学显微镜、扫描电镜、能谱分析仪和三维白光干涉表面形貌仪对激光熔化沉积Aer Met100钢与锻造Aer Met100钢组织及其断裂韧度试样断口和螺栓试样疲劳断口进行了研究分析。结果表明:锻造Aer Met100钢断口组织均匀、致密,具有典型的韧性断口特征,螺栓试样疲劳起源于内表面的加工刀痕处,加工刀痕产生应力集中导致疲劳起源;而激光熔化沉积Aer Met100钢存在成分不均匀的情况,螺栓试样疲劳起源于内部裂纹处,大裂纹伴随小裂纹,裂纹内有未完全熔化的粉末颗粒,某些部位存在局部氧化状态。

关键词：激光熔化沉积锻造 AerMet100钢疲劳断口

不同煤质煤尘云与煤尘层最低着火温度实验研究

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燃烧科学与技术 2019年第5期25卷 445-450页

作者：刘天奇沈阳航空航天大学安全工程学院

为研究不同煤质的煤尘云与煤尘层最低着火温度特性,选取褐煤、长焰煤、不粘煤、气煤、焦煤、瘦煤、贫煤和无烟煤8种不同变质程度煤尘样品,对煤尘云与煤尘层最低着火温度展开测试分析.结果表明:煤尘变质程度越低,TC越小,受限空间内煤尘... 详细信息

为研究不同煤质的煤尘云与煤尘层最低着火温度特性,选取褐煤、长焰煤、不粘煤、气煤、焦煤、瘦煤、贫煤和无烟煤8种不同变质程度煤尘样品,对煤尘云与煤尘层最低着火温度展开测试分析.结果表明:煤尘变质程度越低,TC越小,受限空间内煤尘云越容易着火,煤尘爆炸潜在危险性就越大.通过建立TC与Vad、r的三维拟合模型,发现Vad越大且r越小,TC越小,即越容易着火,爆炸危险性就越大.褐煤TL最小,仅为240℃,变质程度相对较高的瘦煤、贫煤和无烟煤的TL分别为褐煤TL的1.29倍、1.33倍和1.49倍.分析发现小粒径、大厚度的煤尘层相对更容易着火,这是由于小粒径煤尘颗粒间孔隙率较小,厚度的增大有利于热量的持续积累,从而大大减小热量散失速率.对比8种煤质的煤尘云与煤尘层最低着火温度,发现相同粒径条件下,8种煤尘的TC明显大于TL,且两者比值TC/TL介于[2.1,2.5],通过建立TC与TL之间的指数增长拟合关联模型,为不同状态下煤尘最低着火温度特性的确定提供了理论基础.

关键词：煤尘云煤尘层最低着火温度变质程度