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A scalable synthesis of silicon nanoparticles as high-performance anode material for lithium-ion batteries

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Rare Metals 2019年第3期38卷 199-205页

作者： Jin Li Juan-Yu Yang Jian-Tao Wang shi-Gang lu China Automotive Battery Research Institute Co. Ltd.General Research Institute for Nonferrous Metals

In this work, a scalable and cost-effective method including mechanical milling, centrifugation and spray drying was developed to fabricate Si *** synthesized Si nanoparticles show an average size of 62 nm and exhibit a narrow particle size distribution. The influence of particle sizes on electrochemical performance of Si-based electrode was investigated, and it is found that as the particle size decreases in the studied range, the Si particles show a lower specific capacity and a higher irreversible capacity loss(ICL). Furthermore, an oxide layer with thickness of ～3 nm was detected on the surface of the as-received Si nanoparticles, and this layer can be effectively removed by hydrofluoric acid(HF) etching,resulting in much improved electrochemical performance over the as-received samples.

关键词： Lithium-ion batteries Anode Silicon nanoparticles Wet grinding mill

Crystallinity dependence of electrochemical properties for LiFePO_4

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Rare Metals 2015年第5期34卷 334-337页

作者： Ting Zhao Xiang-Jun Zhang Xiang Li shi-Gang lu Research and Development Centre for Vehicle Battery and Energy Storage General Research Institute for Nonferrous Metals

LiFePOa composites were prepared by solid state reactions at different temperatures and time. The crystalline structure and morphology of the composites were analyzed by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, while X-ray absorption spectroscopy （XAS） was employed to characterize the crystallinity. Experimental results show that the electrochemical properties do not monotonously get better with the decrease of particle size and the traditional long reaction time is needless. Moreover, XAS is an effective technique to discover the change in crystallinity.

关键词： Lithium ion battery LiFePO4 Crystallinity

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穿浪型双体高速船靠离泊风险研究及对策

交通企业管理 2024年第5期39卷 102-105页

作者：陶士陆薛非雷涛上海国远劳务服务有限公司大连长兴岛海事处武汉理工大学航运学院

双体穿浪型高速客滚船是最近30多年才研究发展起来的一种高性能的交通运输工具。双体穿浪型高速客滚船与其他类型的高速船相比,特别是在恶劣海况下的航行综合性能具有其他类型的高速船不可逾越的优势,是未来高性能高速船发展的一个方向... 详细信息

双体穿浪型高速客滚船是最近30多年才研究发展起来的一种高性能的交通运输工具。双体穿浪型高速客滚船与其他类型的高速船相比,特别是在恶劣海况下的航行综合性能具有其他类型的高速船不可逾越的优势,是未来高性能高速船发展的一个方向。然而,穿浪型双体高速船的结构特点,使其在靠离泊作业过程中蕴含着一定的风险。随着穿浪型高速船向着大型化方向的发展,靠离泊操纵过程中的风险也越来越大,一旦在靠离泊过程中出现安全事故,造成的损失也越来越大。笔者通过对典型的穿浪型双体高速船在靠离泊过程中出现的风险进行归纳、分析和总结,提炼出对应的解决方案,以供此类船型或者类似特点的船舶在靠离泊作业时提供参考和借鉴。

关键词：穿浪型双体高速船靠离泊风险结构特点风流影响 LIPS操纵控制系统

CYP2C19＊2 and Other Allelic Variants Affecting Platelet Response to Clopidogrel Tested by Thrombelastography in Patients with Acute Coronary Syndrome

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Chinese Medical Journal 2015年第16期128卷 2183-2188页

作者： Jian Liu Xiao-Yan Nie Yong Zhang Yun lu lu-Wen shi Wei-Min Wang Department of Cardiology Peking University People's Hospital Beijing 100044 China School of Pharmaceutical Sciences Peking University Health Science Center Beijing 100191 China Department of Pharmacy Hennepin County Medical Center Minneapolis Minnesota 55415 USA

Background：To investigate the contributions ofCYP2C 19 polymorphisms to the various clopidogrel responses tested by thrombelastography （TEG） in Chinese patients with the acute coronary syndrome （ACS）.Methods：Patients were screened prospectively with ACS diagnose and were treated with clopidogrel and aspirin dual antiplatelet ***2C 19 loss of function （LOF） and gain of function （GOF） genotype,adenosine 5＇-diphosphate （ADP）-channel platelet inhibition rate （PIR） tested by TEG and the occurrence of 3-month major adverse cardiovascular events and ischemic events were assessed in 116 ***：High on-treatment platelet reactivity （HTPR） prevalence defined by PIR 〈30% by TEG in ADP-channel was 32.76% （38/116）.With respect to the normal wild type,CYP2C 19＊2,and ＊3 LOF alleles,and ＊ 17 GOF alleles,patients were classified into three metabolism phenotypes：41.38% were extensive metabolizers （EMs）,56.90% were intermediate metabolizers （IMs）,and 1.72% were poor metabolizers （PMs）.Of the enrolled patients,31.47%,5.17%,and 0.43%,respectively,were carriers of ＊2,＊3,and ＊ 17 *** HTPR incidence differed significantly according to CYP2C 19 genotypes,accounting for 18.75%,41.54%,and 100.00% in EMs,IMs,and PMs,*** （17.24%） ischemic events occurred during the 3-month follow-up,and there was a significant difference in ischemic events between HTPR group and nonhigh on-treatment platelet reactivity ***：Genetic CYP2C 19 polymorphisms are relative to the inferior,the antiplatelet activity after clopidogrel admission and may increase the incidence of ischemic events in patients with ACS.

关键词： Acute Coronary Syndrome Clopidogrel Resistance CYP2C19 Polymorphisms Platelet Reactivity Thrombelastography

Mixed-dimensional hierarchical configuration of 2D Ni_(2)P nanosheets anchored on 1D silk-derived carbon fiber for extraordinary electromagnetic wave absorption

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Journal of Materials Science & Technology 2022年第6期101卷 85-94页

作者： Fei Pan Lei Cai Yanyan Dong Xiaojie Zhu Yuyang shi Wei lu Shanghai Key Lab.of D&A for Metal-Functional Materials School of Materials Science&EngineeringTongji UniversityShanghai 201804China

Considering a series of electromagnetic pollution problems brought by the development of electronic communication technology,more attention has been paid to the research of electromagnetic wave(EMW)absorbing materials with unique composition and ***,under the inspiration of mixeddimensional hierarchical structure,2D Ni_(2)P nanosheets anchored on 1D silk-derived carbon fiber is successfully fabricated as a gratifying resistor-dielectric type *** a controllable pyrolyzation strategy and disproportionated reaction,high-density 2D Ni_(2)P nanosheets were grown vertically and cross-linked on the surface of 1D silk-derived carbon *** sample exhibited superior EMW absorption performance with maximum reflection loss value of–56.9 d B at the thickness of 2.32 mm and the effective absorption bandwidth can reach to 7.2 GHz at the thickness of 1.93 *** addition,the pure Ni_(2)P shows remarkable dielectric characteristic and EMW absorption ability as *** integration of dualconductive loss,enhanced polarization relaxation loss and the multiple scattering in the composites was proved to contribute to the good EMW absorption ***,this work confirms the great potentials of Ni_(2)P as a high-efficient EMW absorbing materials and light a new way in construction of multidimensional absorber.

关键词： Biomass Metal phosphates Mixed-dimensional hierarchical structure Impedance match Electromagnetic wave absorption

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面向研究生的“机器学习”课程思政教学探索

教育教学论坛 2024年第31期 121-124页

作者：石陆魁张军侯向丹河北工业大学人工智能与数据科学学院

立德树人是教育的根本任务，课程思政建设是落实“三全育人”的重要途径。机器学习作为人工智能的一个重要分支，对培养人工智能相关人才具有重要支撑作用。在面向研究生的“机器学习”课程中，如何有机融入思政元素是一项重要的课程教... 详细信息

立德树人是教育的根本任务，课程思政建设是落实“三全育人”的重要途径。机器学习作为人工智能的一个重要分支，对培养人工智能相关人才具有重要支撑作用。在面向研究生的“机器学习”课程中，如何有机融入思政元素是一项重要的课程教学任务。从建设目标及思路、合理设计思政元素与案例、教学实践、多元化课程资源建设、多模式教学方法改革、多元化层次化的全过程考核评价方法等方面进行了探讨。通过“机器学习”课程思政建设，在人才培养过程中实现价值塑造、知识传授、能力培养相统一。

关键词：机器学习课程思政多元化层次化

“一张图”在广西河长制湖长制信息管理系统中的应用

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广西水利水电 2024年第4期 136-138页

作者：梁振斌陆世征刘剑广西壮族自治区水利科学研究院广西水工程材料与结构重点实验室南宁530023

本文旨在探讨“一张图”理论在广西河长制湖长制信息管理系统的应用,以提升河流管理和保护的效率。通过分析广西河长制湖长制信息管理系统的建设现状及面临的挑战,指出引入“一张图”理念的迫切需求。在河长制湖长制信息管理系统中应用... 详细信息

本文旨在探讨“一张图”理论在广西河长制湖长制信息管理系统的应用,以提升河流管理和保护的效率。通过分析广西河长制湖长制信息管理系统的建设现状及面临的挑战,指出引入“一张图”理念的迫切需求。在河长制湖长制信息管理系统中应用“一张图”促进数据融合与共享,提高决策的可视化支持,同时增强移动监管的灵活性和应用效果,并提出了优化建议。

关键词：一张图河长制信息化系统数据融合可视化决策

Synthesis and characterization of conjugated polymer containing azobenzene and oxadiazole units

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Chinese Chemical Letters 2009年第2期20卷 235-237页

作者： Yue Zhang shi Jun Yu lu Wang Cong Li College of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 China

A novel conjugated polymer containing azobenzene and oxadiazole units was synthesized through multi-step synthesis. The structures and properties of monomer and polymer were characterized and evaluated with IR, ^1H NMR, UV, TGA and GPC, respectively. Polymer with long side chain of alkoxy shows good solubility, thermal stability and photoisomerization property.

关键词： Oxadiazole Conjugated polymer Synthesis Characterization

快速康复护理干预对胸腔镜下肺结节切除术后患者的影响

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社区医学杂志 2024年第16期22卷 565-570页

作者：杨苗娟李冰孙颖颖石路南阳市中心医院胸外科肺部病区

目的调查我院对胸腔镜下肺结节切除术后患者的护理情况，并对比常规护理干预与快速康复护理干预对此类患者的术后干预效果，旨在明确快速康复护理干预在胸腔镜下肺结节切除术后的临床应用价值，为进一步提升此类患者术后恢复效果及干... 详细信息

目的调查我院对胸腔镜下肺结节切除术后患者的护理情况，并对比常规护理干预与快速康复护理干预对此类患者的术后干预效果，旨在明确快速康复护理干预在胸腔镜下肺结节切除术后的临床应用价值，为进一步提升此类患者术后恢复效果及干预效果做参考。方法选取2020-03-01-2022-10-31南阳市中心医院胸外科肺部病区胸腔镜下肺结节切除术后患者103例作为调查对象，根据随机数字表法对所选样本进行随机分组，对照组（n=51）和观察组（n=52）。对照组给予常规护理干预；观察组给予快康复护理干预。干预7 d后，应用肺功能检测仪检测并记录患者的肺功能指标，应用情绪调节自我效能（RESE）评估情绪调节能力，应用匹兹堡睡眠质量指数（PSQI）评估预后睡眠质量，应用圣乔治医院呼吸问题调查问卷（SGRQ）评估预后生活质量，并统计对比2组患者的并发症发生率，所有数据结果采用SPSS软件进行检验分析。结果根据基线数据调整后，观察组患者第1秒用力呼气容积（FEV1）水平（2.75±0.49） L高于对照组FEV1水平（2.32±0.45） L,差异有统计学意义，F=0.447,P=0.002;用力肺活量（FVC）水平（3.52±0.51） L高于对照组FVC水平（3.17±0.47） L,差异有统计学意义，F=0.950,P=0.012;每分钟最大通气量（MVV）水平（81.55±3.22） L高于对照组MVV水平（73.32±3.85） L,差异有统计学意义，F=4.054,P=0.047;积极情绪效能（15.14±2.42）分高于对照组积极情绪效能（12.52±2.39）分，差异有统计学意义，F=0.009,P=0.004;狂躁情绪效能（16.51±2.16）分高于对照组狂躁情绪效能（13.29±2.24）分，差异有统计学意义，F=7.562,P=0.007;匹兹堡睡眠质量指数（PSQI）评分（5.76±1.27）分低于对照组PSQI评分（10.23±1.32）分，差异有统计学意义，F=5.415,P=0.022;2组患者术后并发症总发生率比较，差异无统计学意义χ2=2.655,P=0.103。结论快速康复护理干预可以提高胸腔镜下肺结节切除术后患者术后肺功能水平，增强患者的预后心理调节能力，改善患者预后睡眠质量及生活质量水平。

关键词：快速康复护理干预胸腔镜下肺结节切除术肺功能心理调节能力生活质量