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Achieving stable K-storage performance of carbon sphere-confined Sb via electrolyte regulation

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Journal of Energy Chemistry 2023年第1期76卷 51-58,I0002页

作者： Ningning Chen Nailu Shen Xiaoping yi yinshuang Pang Jing zheng Qingxue Lai Yanyu Liang Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Department of Chemistry and Materials Science College of ScienceNanjing Forestry UniversityNanjing 210037JiangsuChina

Potassium-ion batteries(PIBs)have been considered as one of the most promising alternatives to lithiumion batteries(LIBs)in view of their competitive energy density with significantly reduced product ***,alloy-type materials are expected as a high-performance anode of PIBs thanks to their intrinsic chemical stability as well as high theoretical specific ***,the serious incompatibility between alloy-type active materials and electrolytes,especially for the formation of unstable solidelectrolyte interfacial(SEI)films,often leads to insufficient cycle ***,the formation mechanism of SEI films in the K-storage systems based on carbon sphere confined Sb anode(Sb@CS)were investigated in commercially available *** characterizations and theoretical calculation revealed that the solvents in the dilute electrolyte of 0.8 M KPF_(6)/EC+DEC were excessively decomposed on the interface to generate unstable SEI and thus result in inferior K-storage *** the contrary,a salt-concentrated electrolyte(3 M KFSI/DME)can generate inorganic-dominated stable SEI due to the preferential decomposition of *** a result,the prepared Sb@CS in the matched 3 M KFSI/DME electrolyte delivered a high reversible capacity of 467.8 m A h g^(-1)after 100 cycles at 100 m A g^(-1),with a slow capacity decay of 0.19%per cycle from the 10th to the 100th *** findings are of great significance for revealing the interfacial reaction between electrodes and electrolytes as well as improving the stability of Sb-based anode materials for PIBs.

关键词： Interfacial regulation Solid-electrolyte interface Sb-based alloy anode Electrolyte compatibility Potassium-ion batteries

Comparison of intracytoplasmic sperm injection(ICSI)outcomes in infertile men with spermatogenic impairment of differing severity

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Asian Journal of Andrology 2022年第3期24卷 299-304页

作者： Ping Ping Zhong zheng yi Ma Sha-Sha Zou Xiang-Feng Chen Center for Reproductive Medicine Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200135China Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics Shanghai 200135China Shanghai Human Sperm Bank Shanghai 200135China

The extent of spermatogenic impairment on intracytoplasmic sperm injection(ICSI)outcomes and the risk of major birth defects have been little *** this study,we evaluated the relationship between various spermatogenic conditions,sperm origin on ICSI outcomes,and major birth defects.A total of 934 infertile men attending the Center for Reproductive Medicine of Ren Ji Hospital(Shanghai,China)were classified into six groups:nonobstructive azoospermia(NOA;n=84),extremely severe oligozoospermia(esOZ;n=163),severe oligozoospermia(sOZ,n=174),mild oligozoospermia(mOZ;n=148),obstructive azoospermia(OAZ;n=155),and normozoospermia(NZ;n=210).Rates of fertilization,embryo cleavage,high-quality embryos,implantation,biochemical and clinical pregnancies,abortion,delivery,newborns,as well as major birth malformations,and other newborn outcomes were analyzed and compared among *** NOA group showed a statistically lower fertilization rate(68.2%vs esOZ 77.3%,sOZ 78.0%,mOZ 73.8%,OAZ 76.6%,and NZ 79.3%,all P<0.05),but a significantly higher implantation rate(37.8%)than the groups esOZ(30.1%),sOZ(30.4%),mOZ(32.6%),and OAZ(31.0%)(all P<0.05),which was similar to that of Group NZ(38.4%).However,there were no statistically significant differences in rates of embryo cleavage,high-quality embryos,biochemical and clinical pregnancies,abortions,deliveries,major birth malformations,and other newborn outcomes in the six *** results showed that NOA only negatively affects some embryological outcomes such as fertilization *** was no evidence of differences in other embryological and clinical outcomes with respect to sperm source or spermatogenic *** failure and sperm origins do not impinge on the clinical outcomes in ICSI treatment.

关键词： intracytoplasmic sperm injection nonobstructive azoospermia normozoospermia obstructive azoospermia oligozoospermia

A novel polarization converter based on the band-stop frequency selective surface

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Chinese Physics B 2022年第2期31卷 380-386页

作者： Kun Liao Shining Sun Xinyuan zheng Xianxian shao Xiangkun Kong shaobin Liu College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Aviation Key Laboratory of Science and Technology on High Performance Electromagnetic Windows Jinan 250023China Pingxiang Health Vocational College Pingxiang 337006China

A dual-passband single-polarized converter based on the band-stop frequency selective surface(FSS)with a low radar cross-section(RCS)is designed in this *** unit cell of the proposed converter is formed by a polarization layer attached to the band-stop frequency selective *** simulation results reveal that the co-polarization reflection coefficients below-10 d B are achieved in 3.82–13.64 GHz with a 112.4%fractional bandwidth(the ratio of the signal bandwidth to the central frequency).Meanwhile,a polarization conversion band is realized from 8.14 GHz to 9.27 GHz with a polarization conversion ratio which is over 80%.Moreover,the 1 d B transmission window is obtained in two nonadjacent bands of 3.42–7.02 GHz and 10.04–13.91 GHz corresponding to the relative bandwidths of 68.9%and 32.3%,***,the radar cross-section of the designed structure can be reduced in the wideband from 2.28 GHz to 14 GHz,and the 10 d B RCS reduction in the range of 4.10–13.35 GHz is *** addition,the equivalent circuit model of this converter is established,and the simulation results of the Advanced Design System(ADS)match well with those of CST Microwave Studio(CST).The archetype of the designed converter is manufactured and *** experiment results match the simulation results well,which proves the reliability of the simulation results.

关键词： dual-passband single-polarized converter polarization radar cross-section(RCS)

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交通运输业碳排放效率时空演变及趋势预测

环境科学 2024年第4期45卷 1879-1887页

作者：郑琰蒋雪梅肖玉杰南京林业大学汽车与交通工程学院南京210037 南京财经大学营销与物流管理学院南京210023

为探索周围邻域对交通运输业碳排放效率演变的影响,分析了交通运输业碳排放效率的时空演变特征,并对其长期演变趋势进行预测.首先,采用超效率SBM模型测度我国30个省份的交通运输业碳排放效率,利用核密度估计方法分析其随时间演变的特征... 详细信息

为探索周围邻域对交通运输业碳排放效率演变的影响,分析了交通运输业碳排放效率的时空演变特征,并对其长期演变趋势进行预测.首先,采用超效率SBM模型测度我国30个省份的交通运输业碳排放效率,利用核密度估计方法分析其随时间演变的特征;其次,构建传统与空间马尔可夫概率转移矩阵进一步分析了交通运输业碳排放效率的时空演变特征;最后,针对不同类型的省份提出相关建议.结果表明:(1)交通运输业碳排放效率的平均水平低于0.6,但呈逐年递增的趋势,且区域差异逐渐缩小.(2)各省份交通运输业碳排放效率至少有71%的概率维持原有状态,且短期内难以实现跨阶段转移.(3)地理空间格局影响交通运输业碳排放效率的演变过程,当某省份与碳排放效率高的省份相邻时,转移到高效率的概率增加,而与碳排放效率低的省份相邻时则相反.此外,在空间溢出效应的影响下,交通运输业碳排放效率的演变逐渐呈现“俱乐部收敛”的趋势.(4)从长期演变趋势来看,各省份交通运输业碳排放效率向高水平转移的可能性增大,呈现出由低到高递增的态势,同时“俱乐部收敛”现象逐渐消失.

关键词：交通运输业碳排放效率超效率SBM模型空间马尔科夫链模型时空演变趋势预测

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多目标粒子群优化算法及其应用研究综述

浙江大学学报（工学版） 2024年第6期58卷 1107-1120,1232页

作者：叶倩琳王万良王铮浙江工业大学计算机科学与技术学院浙江杭州310023 浙大城市学院计算机与计算科学学院浙江杭州310015

现有研究较少涵盖最先进的多目标粒子群优化(MOPSO)算法.本研究介绍了多目标优化问题(MOPs)的研究背景,阐述了MOPSO的基本理论.根据特征将其分为基于Pareto支配、基于分解和基于指标的3类MOPSO算法,介绍了现有的经典算法.介绍相关评价指... 详细信息

现有研究较少涵盖最先进的多目标粒子群优化(MOPSO)算法.本研究介绍了多目标优化问题(MOPs)的研究背景,阐述了MOPSO的基本理论.根据特征将其分为基于Pareto支配、基于分解和基于指标的3类MOPSO算法,介绍了现有的经典算法.介绍相关评价指标,并选取7个有代表性的算法进行性能分析.实验结果展示了传统MOPSO和3类改进的MOPSO算法各自的优势与不足,其中,基于指标的MOPSO在收敛性和多样性方面表现较优.对MOPSO算法在生产调度、图像处理和电力系统等领域的应用进行简要介绍.并探讨了MOPSO算法用于求解复杂优化问题的局限性及未来的研究方向.

关键词：粒子群优化多目标优化 Pareto解集收敛性多样性

激光雷达与惯性测量单元同步融合下的园区三维建图

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光学精密工程 2024年第3期32卷 422-434页

作者：马庆禄汪军豪张杰邹政重庆交通大学交通运输学院重庆400074 同济大学道路与交通工程教育部重点实验室上海201804

针对自动驾驶三维建图中存在的建图不准确以及位姿飘移的问题,利用激光雷达里程计消除惯性测量单元(Iner-tial Measurement Unit,nIMU)累计误差并通过IMU预积分去除激光雷达点云畸变,形成激光雷达与IMU的紧耦合建图系统;通过增加回环检... 详细信息

针对自动驾驶三维建图中存在的建图不准确以及位姿飘移的问题,利用激光雷达里程计消除惯性测量单元(Iner-tial Measurement Unit,nIMU)累计误差并通过IMU预积分去除激光雷达点云畸变,形成激光雷达与IMU的紧耦合建图系统;通过增加回环检测因子、激光雷达里程计因子以及IMU预积分因子进行后端图优化,旨在提升定位建图的全局一致性,减小位姿估计误差,降低累计漂移误差。最后,在学校园区实地场景以及利用开源数据集KITTI进行实验验证,实验表明,在选取的学校园区实地场景下,改进算法APE误差均值相较于原算法降低了11.04%,APE均方根误差较于原算法降低了17.35%;改进算法在KITTI数据集场景下平均APE误差下降了10.04%,均方误差方面相较于原算法平均下降了12.04%。研究结果表明,改进的建图方法能够有效提高建图的位姿估计精度与地图构建精度。

关键词：激光雷达自动驾驶同步定位与建图传感器融合

Immune-tumor interaction dictates spatially directed evolution of esophageal squamous cell carcinoma

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National Science Review 2024年第5期11卷 170-185页

作者： Yong Zhou Shanlan Mo Heyang Cui Ruifang Sun Weimin Zhang Xiaofei Zhuang Enwei Xu Hongyi Li yikun Cheng Yongsheng Meng Meilin Liu Ting Yan Huijuan Liu Ling Zhang Bin Yang Yanfeng Xi Shubin Wang Xiaolong Cheng Shuai Cheng Li Zhihua Liu Qimin Zhan zheng Hu Yongping Cui Cancer Institute Department of Pathology Peking University Shenzhen Hospital Shenzhen Peking University-the Hong Kong University of Science and Technology(PKU-HKUST) Medical Center Institute of Cancer ResearchShenzhen Bay Laboratory Key Laboratory of Cellular Physiology of the Ministry of Education Department of Pathology Shanxi Medical University City University of Hong Kong Shenzhen Research Institute CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Department of Surgery Faculty of Medicine The Chinese University of Hong Kong Department of Tumor Biobank Shanxi Province Cancer HospitalShanxi Hospital Affiliated to Cancer HospitalChinese Academy of Medical SciencesCancer Hospital Affiliated to Shanxi Medical University Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Laboratory of Molecular Oncology Peking University Cancer Hospital & Institute Research Unit of Molecular Cancer Research Chinese Academy of Medical Sciences Department of Thoracic Surgery Shanxi Province Cancer HospitalShanxi Hospital Affiliated to Cancer HospitalChinese Academy of Medical SciencesCancer Hospital Affiliated to Shanxi Medical University Department of Pathology Shanxi Province Cancer HospitalShanxi Hospital Affiliated to Cancer HospitalChinese Academy of Medical SciencesCancer Hospital Affiliated to Shanxi Medical University College of Letters & Science University of California Berkeley State Key Laboratory of Molecular Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College

Esophageal squamous cell carcinoma（ESCC） is a poor-prognostic cancer type with extensive intra-and inter-patient heterogeneity in both genomic variations and tumor microenvironment（TME）. However, the patterns and drivers of spatial genomic and microenvironmental heterogeneity of ESCC remain largely unknown. Here, we generated a spatial multi-omic atlas by whole-exome, transcriptome, and methylome sequencing of 507 tumor samples from 103 patients. We identified a novel tumor suppressor PREX2,accounting for 22% of ESCCs with frequent somatic mutations or hyper-methylation, which promoted migration and invasion of ESCC cells in vitro. Analysis of the TME and quantification of subclonal expansion indicated that ESCCs undergo spatially directed evolution, where subclones mostly originated from the tumor center but had a biased clonal expansion to the upper direction of the ***, we found upper regions of ESCCs often underwent stronger immunoediting with increased selective fitness, suggesting more stringent immune selection. In addition, distinct TMEs were associated with variable genomic and clinical outcomes. Among them, hot TME was associated with high immune evasion and subclonal heterogeneity. We also found that immunoediting, instead of CD8+T cell abundance, acts as an independent prognostic factor of ESCCs. Importantly, we found significant heterogeneity in previously considered potential therapeutic targets, as well as BRCAness characteristics in a subset of patients, emphasizing the importance of focusing on heterogeneity in ESCC targeted ***, these findings provide novel insights into the mechanisms of the spatial evolution of ESCC and inform precision therapeutic strategies.

关键词： squamous cell carcinoma heterogeneity multi-omics evolution tumor microenvironment

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卫星舱体振动能量传递特性分析

振动．测试与诊断 2024年第1期44卷 60-66,197页

作者：崔征徐洋申妍尹显波东华大学机械工程学院上海201620

将结构声强法引入卫星振动传递分析领域,研究飞轮扰动下卫星舱体结构的振动能量传递规律,辨识主导传递路径和波形。根据等效板理论对舱体结构蜂窝板等效并建立有限元模型,通过测力平台获取飞轮扰动力和力矩进行激励加载,结合命令流进行... 详细信息

将结构声强法引入卫星振动传递分析领域,研究飞轮扰动下卫星舱体结构的振动能量传递规律,辨识主导传递路径和波形。根据等效板理论对舱体结构蜂窝板等效并建立有限元模型,通过测力平台获取飞轮扰动力和力矩进行激励加载,结合命令流进行数据提取,利用结构声强法获得振动能量并将其传递过程以流线云图方式呈现,实验也验证了蜂窝耦合结构振动能量流计算的正确性。通过对模型上能量流动分析,对振源到相机安装区域的传递路径进行划分,对比各路径不同波形的净传递比及振动总能量,分析不同路径上波形参与能量传递情况,确定主要传递路径及波形。结果表明:从左隔板传递到相机区域的总能量最大;4条路径中纵波的净传递比均大于0.68,为参与能量传递的主要波形;振源及相机安装区的弯曲波能量最大,纵波、剪切波起到能量传递及转化的作用。

关键词：卫星舱体振动能量结构声强传递路径振动波

Directional Electromagnetic Interference Shielding Based on Step-Wise Asymmetric Conductive Networks

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Nano-Micro Letters 2022年第1期14卷 262-277页

作者： Bai Xue yi Li Ziling Cheng Shengdu Yang Lan Xie Shuhao Qin Qiang zheng Department of Polymer Materials and Engineering College of Materials and MetallurgyGuizhou UniversityGuiyang 550025People’s Republic of China National Engineering Research Center for Compounding and Modification of Polymer Materials National and Local Joint Engineering Research Center for Functional Polymer Membrane Materials and Membrane ProcessesGuiyang 550014People’s Republic of China College of Polymer Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China

Some precision electronics such as signal transmitters need to not only emit effective signal but also be protected from the external electromagnetic(EM)***,directional electromagnetic interference(EMI)shielding materials(i.e.,when the EM wave is incident from different sides of the sample,the EMI shielding effectiveness(SE)is rather different)are strongly required;unfortunately,no comprehensive literature report is available on this research ***,Nicoated melamine foams(Ni@MF)were obtained by a facile electroless plating process,and multiwalled carbon nanotube(CNT)papers were prepared via a simple vacuum-assisted self-assembly ***,step-wise asymmetric poly(butylene adipate-co-terephthalate)(PBAT)composites consisting of loose Ni@MF layer and compact CNT layer were successfully fabricated via a facile solution encapsulation *** step-wise asymmetric structures and electrical conductivity endow the Ni@MF/CNT/PBAT composites with unprecedented directional EMI shielding *** the EM wave is incident from Ni@MF layer or CNT layer,Ni@MF-5/CNT-75/PBAT exhibits the total EMI SE(SET)of 38.3 and 29.5 dB,respectively,which illustrates theΔSET of 8.8 *** work opens a new research window for directional EMI shielding composites with step-wise asymmetric structures,which has promising applications in portable electronics and next-generation communication technologies.

关键词： Solution encapsulation Step-wise asymmetry Directional electromagnetic interference shielding Electrical conductivity Vacuum-assisted self-assembly