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A layered multifunctional framework based on polyacrylonitrile and MOF derivatives for stable lithium metal anode

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Journal of Energy Chemistry 2024年第6期93卷 282-288,I0007页

作者： Fanfan Liu Peng Zuo Jing Li pengcheng shi Yu Shao Linwei Chen Yihong Tan Tao Ma Engineering Research Center of High-frequency Soft Magnetic Materials and Ceramic Powder Materials of Anhui Province School of Chemistry and Material EngineeringChaohu UniversityHefei 238024AnhuiChina Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Pharmacy Anhui University of Chinese MedicineHefei 230012AnhuiChina School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006GuangdongChina Jiujiang DeFu Technology Co. Ltd.Jiujiang 332000JiangxiChina

Composite Li metal anodes based on three-dimensional(3D) porous frameworks have been considered as an effective material for achieving stable Li metal batteries with high energy density.However,uneven Li deposition behavior still occurs at the top of 3D frameworks owing to the local accumulation of Li ions.To promote uniform Li deposition without top dendrite growth,herein,a layered multifunctional framework based on oxidation-treated polyacrylonitrile(OPAN) and metal-organic framework(MOF) derivatives was proposed for rationally regulating the distribution of Li ions flux,nucleation sites,and electrical conductivity.Profiting from these merits,the OPAN/carbon nano fiber-MOF(CMOF) composite framework demonstrated a reversible Li plating/stripping behavior for 500 cycles with a stable Coulombic efficiency of around 99.0% at the current density of 2 mA/cm~2.Besides,such a Li composite anode exhibited a superior cycle lifespan of over 1300 h under a low polarized voltage of 18 mV in symmetrical cells.When the Li composite anode was paired with LiFePO_(4)(LFP) cathode,the obtained full cell exhibited a stable cycling over 500 cycles.Moreover,the COMSOL Multiphysics simulation was conducted to reveal the effects on homogeneous Li ions distribution derived from the above-mentioned OPAN/CMOF framework and electrical insulation/conduction design.These electrochemical and simulated results shed light on the difficulties of designing stable and safe Li metal anode via optimizing the 3D frameworks.

关键词： Lithium metal anode Layered multifunctional framework Ions flux redistribution Electrical insulation/conduction structure Uniform Li deposition

基于下山单纯形算法的宽带光子晶体1×3分束器研究

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中国激光 2024年第2期51卷 45-53页

作者：许健施鹏程施伟华李培丽南京邮电大学电子与光学工程学院、柔性电子(未来科技)学院江苏南京210023

提出了一种基于二维光子晶体的波导型宽带光子晶体1×3分束器,通过在波导分支处引入一个调控介质柱并优化其半径和偏移量,可以调控分束器各输出端口的透过率;通过在两分支波导内侧引入三组带宽优化介质柱并优化其半径,可以实现分束器的... 详细信息

提出了一种基于二维光子晶体的波导型宽带光子晶体1×3分束器,通过在波导分支处引入一个调控介质柱并优化其半径和偏移量,可以调控分束器各输出端口的透过率;通过在两分支波导内侧引入三组带宽优化介质柱并优化其半径,可以实现分束器的宽带特性。为了提高优化效率,获得性能优良的宽带分光比可设计的分束器,利用下山单纯形算法,根据特定的分光比目标,对提出的1×3分束器进行逆向设计和研究。结果表明,不仅提高了光子晶体分束器的优化效率,而且获得了性能优良的宽带分束器。设计的1×3等比分束器在1525~1565 nm带宽范围内的附加损耗低于0.199 dB,均匀性小于0.119 dB,响应时间在0.5 ps以内;设计的1×3不等比分束器在1525~1565 nm带宽范围内的附加损耗不大于0.177 dB,分束方差不大于6.88×10^(-4),响应时间在0.5 ps以内。该分束器在未来全光通信网、光子高密度集成等领域具有很好的应用前景。

关键词：光学器件光子晶体分束器宽带下山单纯形算法

Effects of Polycarboxylate-based Grinding Aid on the Performance of Grinded Cement

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Journal of Wuhan University of Technology(Materials Science) 2021年第5期36卷 682-688页

作者：何燕 ZHANG Xiong WU Genhuo shi pengcheng School of Civil Engineering Suzhou University of Science and TechnologySuzhou 215011China Key Laboratory of Advanced Civil Engineering Materials of Education Ministry Tongji UniversityShanghai 201804China Jiangsu Technology Industrialization and Research Center of Ecological Road Engineering Suzhou 215011China

A molecular modified PCE-type GA was self-synthesized,and the grindability concerning grinding duration and particle size distribution of ground cement was evaluated.Setting time,flowability,hydration heat,mechanical properties and microstructure of the ground cement were also investigated.The results show that:PCE-type GA is effective in cement grinding.With 0.03%PCE-type GA added into cement clinker,the Blain surface area reaches to the highest at every ten minutes,and the volume percent of cement particles with size of(0-32μm)reaches the highest.Excessive amount of PCE-type GA seems to impair the grinding efficiency.The grinding efficiency promotes cement fineness and hence contributes to the cement hydration degree as well as improves the mechanical properties.

关键词： PCE-type GA cement grindability fineness hydration properties

Haploidentical transplantation has a superior graft-versus-leukemia effect than HLA-matched sibling transplantation for Ph- high-risk B-cell acute lymphoblastic leukemia

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Chinese Medical Journal 2022年第8期135卷 930-939页

作者： Fan Menglin Wang Yu Lin Ren Lin Tong Huang Fen Fan Zhiping Xu Yajing Yang Ting Xu Na shi pengcheng Nie Danian Lin Dongjun Jiang Zujun Wang Shunqing Sun Jing Huang Xiaojun Liu Qifa Xuan Li Department of Hematology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Department of Hematology Peking University People’s HospitalPeking University Institute of HematologyBeijing 100044China Department of Hematology Xiangya HospitalCentral South UniversityChangshaHunan 110051China Department of Hematology Fujian Institute of HematologyFujian Medical University Union HospitalFuzhouFujian 350001China Department of Hematology Sun Yat-Sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdong 510130China Department of Hematology The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510630China Department of Hematology Guangzhou General Hospital of Guangzhou Military CommandGuangzhouGuangdong 510010China Department of Hematology Guangzhou First People’s HospitalGuangzhouGuangdong 510080China

Background: Compared with human leukocyte antigen (HLA)-matched sibling donor (MSD) transplantation, it remains unclear whether haploidentical donor (HID) transplantation has a superior graft-versus-leukemia (GVL) effect for Philadelphia-negative (Ph-) high-risk B-cell acute lymphoblastic leukemia (B-ALL). This study aimed to compare the GVL effect between HID and MSD transplantation for Ph- high-risk B-ALL.Methods: This study population came from two prospective multicenter trials (NCT01883180, NCT02673008). Immunosuppressant withdrawal and prophylactic or pre-emptive donor lymphocyte infusion (DLI) were administered in patients without active graft-versus-host disease (GVHD) to prevent relapse. All patients with measurable residual disease (MRD) positivity posttransplantation (post-MRD+) or non-remission (NR) pre-transplantation received prophylactic/pre-emptive interventions. The primary endpoint was the incidence of post-MRD+.Results: A total of 335 patients with Ph- high-risk B-ALL were enrolled, including 145 and 190, respectively, in the HID and MSD groups. The 3-year cumulative incidence of post-MRD+ was 27.2% (95% confidence interval [CI]: 20.2%-34.7%) and 42.6% (35.5%-49.6%) in the HID and MSD groups(P = 0.003), respectively. A total of 156 patients received DLI, including 60 (41.4%) and 96 (50.5%), respectively, in the HID and MSD groups (P= 0.096). The 3-year cumulative incidence of relapse was 18.6% (95% CI: 12.7%-25.4%) and 25.9% (19.9%-32.3%;P = 0.116) in the two groups, respectively. The 3-year overall survival (OS) was 67.4% (95% CI: 59.1%-74.4%) and 61.6% (54.2%-68.1%;P = 0.382), leukemia-free survival (LFS) was 63.4% (95% CI: 55.0%-70.7%) and 58.2% (50.8%-64.9%;P= 0.429), and GVHD-free/relapse-free survival (GRFS) was 51.7% (95% CI: 43.3%-59.5%) and 37.8% (30.9%-44.6%;P= 0.041), respectively, in the HID and MSD groups.Conclusion: HID transplantation has a lower incidence of post-MRD+ than MSD transplantation, suggesting that HID transplantation might have a superior GVL effect than MSD transpla

关键词： Haploidentical HLA-matched sibling Philadelphia-negative high-risk B-cell acute lymphoblastic leukemia Graft-versus-leukemia Transplantation

基于车载式激光雷达的隧道变形动态巡检技术研究

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城市轨道交通研究 2024年第6期27卷 276-280,285页

作者：谭远鑫呙润华施鹏程新疆大学建筑工程学院乌鲁木齐830046 清华大学土木工程系北京100084

[目的]针对我国隧道变形监测手段实时性差、成本高、效率低的现状,须有效提升隧道变形监测效率,对此提出基于车载式激光雷达的隧道变形监控量测方法。[方法]利用激光雷达传感器扫描收集隧道全断面三维数据,通过整体最小二乘法对隧道点... 详细信息

[目的]针对我国隧道变形监测手段实时性差、成本高、效率低的现状,须有效提升隧道变形监测效率,对此提出基于车载式激光雷达的隧道变形监控量测方法。[方法]利用激光雷达传感器扫描收集隧道全断面三维数据,通过整体最小二乘法对隧道点云数据进行平差及曲面拟合,根据拟合的隧道断面椭圆参数进行形变分析,实现隧道变形情况的快速动态巡检。[结果及结论]试验结果表明,该方法能够快速准确地获取隧道全断面数据,结合整体最小二乘法对数据进行处理分析可有效获取隧道变形情况,基本实现在不影响隧道正常交通的情况下有效完成隧道变形动态实时监测。

关键词：隧道变形监测车载式激光雷达整体最小二乘法动态巡检

基于SARIMAX-SVR的光伏发电功率预测

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电力系统及其自动化学报 2024年第5期36卷 1-8页

作者：周鑫李燕曾永辉石鹏程湖南科技大学信息与电气工程学院湘潭411201

为提高光伏发电功率预测精度,提出一种基于外生因素及季节性的差分自回归移动平均SARIMAX(seasonal autoregressive integrated moving average with exogenous factors)并结合优化支持向量回归SVR(support vector regression)的光伏发电功率预测方法。首先,采用相关性特征法聚类气象条件中关键气象因子,以消除数据冗余并降低ARIMAX模型的复杂性;其次,在ARIMAX模型中引入季节性因素,构建SARIMAX模型来捕捉数据的季节性变化;最后,使用SARIMAX模型的拟合残差其作为SVR模型的输入,进一步拟合数据的非线性。通过仿真算例分析表明,所提方法可显著提高光伏发电功率预测精度。

关键词：光伏发电功率预测差分自回归移动平均季节性因子支持向量回归

同时伴有AML1-ETO和BCR-ABL1融合基因的急性髓系白血病1例

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中华内科杂志 2024年第2期63卷 203-206页

作者：姚韵倩贾西刘慧卢绮思熊文杰张钰刘启发史鹏程南方医科大学南方医院血液科广州510515 前海人寿广州总医院广州511300

报道1例同时伴有AML1-ETO和BCR-ABL1融合基因的急性髓系白血病罕见病例。BCR-ABL1可能协同AML1-ETO融合基因促进白血病发生发展。化疗联合达沙替尼靶向治疗可早期获得完全分子生物学缓解,序贯异基因造血干细胞移植有可能获得长期生存。

关键词：白血病,髓样,急性 AML1-ETO BCR-ABL1 达沙替尼

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基于椭球面共形相控阵的卫星可见性仿真分析

计算机测量与控制 2024年第1期32卷 282-289页

作者：史鹏程吴海洲孔永飞武昭希中国电子科技集团公司第54研究所石家庄050081

针对我国航天事业迅猛发展,在轨运行卫星数量急剧增加,有限的航天测控资源难以满足日益增长的测控需求的问题,基于网格球顶相控阵天线技术及现有地面测控站数学结构,设计了一种符合实际工程需求的半椭球面共形相控阵阵列地面测控站模型... 详细信息

针对我国航天事业迅猛发展,在轨运行卫星数量急剧增加,有限的航天测控资源难以满足日益增长的测控需求的问题,基于网格球顶相控阵天线技术及现有地面测控站数学结构,设计了一种符合实际工程需求的半椭球面共形相控阵阵列地面测控站模型;采用STK/Matlab联合仿真的方法,以卫星两行数作为目标库进行数据采集,通过地球坐标系与子阵视线坐标系实现数据转换,对地面站选址与中国现役卫星之间的可见性关系进行了研究;仿真结果表明,纬度和经度均与卫星可见性成正相关关系,为全国范围内地面测控站工作积累科学数据,对后续相控阵阵列天线最大化利用提供数据基础与应用支持。

关键词： STK Matlab 联合仿真椭球面共形相控阵可见性分析两行轨道数据

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MEMS心音传感器及检测电路优化设计

微纳电子技术 2024年第5期61卷 102-111页

作者：刘佳琦张国军崔建功史鹏程中北大学省部共建动态测试技术国家重点实验室太原030051

对基于微电子机械系统(MEMS)技术的心音传感器声敏结构进行了优化且设计了其检测电路。首先,针对心音信号的特点,设计了二次集成的扁平状仿生纤毛结构,对该结构进行仿真,确定了纤毛的尺寸参数和梁上最大应力1.2×10^(5) N/m^(2),对纤毛... 详细信息

对基于微电子机械系统(MEMS)技术的心音传感器声敏结构进行了优化且设计了其检测电路。首先,针对心音信号的特点,设计了二次集成的扁平状仿生纤毛结构,对该结构进行仿真,确定了纤毛的尺寸参数和梁上最大应力1.2×10^(5) N/m^(2),对纤毛进行特征频率仿真,在硅油域中结果为711 Hz;其次由扁平状纤毛结构X轴接收噪声时梁上的应力仿真结果可知该结构具有抗干扰能力;最后设计了后端的放大电路和滤波电路并对传感器封装后进行测试。测试结果表明,该结构的信噪比达到了27 dB,较传统的圆柱形纤毛提高了35%,且其抗干扰能力也优于传统的圆柱形纤毛。优化过后的MEMS心音传感器具有抗干扰、低噪声、低成本、采集的信号不失真等优势,可为临床心音信号的采集提供关键核心部件。

关键词：微电子机械系统(MEMS)技术心音传感器处理电路心音信号信噪比