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Engineering layered/spinel heterostructure via molybdenum doping towards highly stable Li-rich cathodes

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Tungsten 2022年第4期4卷 323-335页

作者： Kun-Qi Geng Meng-Qian Yang Jun-Xia Meng Ling-Fei Zhou Yu-Qin Wang Sydorov Dmytro Qian Zhang Sheng-wen zhong Quan-Xin Ma Key Laboratory of Power Battery and Materials Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou341000China School of Physics and Electronics Gannan Normal UniversityGanzhou341000China

Li-rich layered oxide(LLO),e.g.,Li_(1.12)[Mn_(0.56)Ni_(0.16)Co_(0.08)]O_(2)(LRMO),is considered as a promising cathode material due to its superior Li-storage ***,the poor cycling stability and large voltage decay,which are related to the phase transition,limit its industrialization ***,a Mo-doped LRMO(Li_(1.12)[Mn_(0.56)Ni_(0.16)Co_(0.08)]_(0.98)Mo_(0.02)O_(2),LRMO-Mo2.0%)was successfully synthesized via a simple combination of co-precipitation with high-temperature calcination for solving the mentioned *** with the pristine counterpart,the as-prepared LRMO-Mo2.0%shows more excellent electrochemical performance in terms of rate capability(reversible capacity of 118 mA·h·g^(−1) at 5 C),cyclic ability(94.3%capacity retention after 100 cycles at 0.2 C)and discharge midpoint voltage decay(0.11 V after 100 cycles).Systematic investigation of structural evolution and electrochemical kinetics elucidate that the synergic effect of robust oxygen framework and layered/spinel heterostructure is the key to its performance *** synergy helps to stabilize the layered structure by curbing the structural transformation and oxygen escaping during the electrochemical *** work paved the way for the simple and efficient preparation of highly stable LLO cathode materials.

关键词： Li-rich layered oxide Mo doping Layered/spinel heterostructure High rate performance Cycling stability

Preparation of the In_2O_23·Sn Films by MO-CVD Technique

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Chemical Research in Chinese Universities 1992年第4期8卷 477-479页

作者： luo wen-xiu, REN Peng-cheng and TAN zhong-ke(Center for Fimctional Materials Rcscarch, Qingdao Institute ofChemical Technology, Qingdao, 266042)LI Zhi-ping (Department of Applied Chemistry, Qingdao University, Qingdao, 266071)

Introduction In;O;·Sn films have high transparency（>95％） within the visible spectral region, low resistivity(10;—10;ohm·cm) at room temperature and superior thermal stability. These films have been applied to solar cells, electronics and photoelectronics fields. In recent years, organometallic-CVD method has emerged as a successful alternate to the physical methods and general CVD for the growth of these films. The MO-CVD tech-

关键词： Metallorganic chemical vapour deposition (MOCVD) Tin doped Indium oxide

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不确定非线性系统混沌反控制

物理学报 2008年第1期57卷 51-55页

作者：李文林宋运忠河南师范大学数学与信息学院河南新乡453007 河南理工大学电气工程与自动化学院复杂网络研究室河南焦作454000

基于滑模变结构控制,研究了不确定非线性系统模型到达混沌反控制,保证经有限时间,使受控不确定非线性系统达到与混沌参考系统数学模型完全一致,并就到达的快速性,鲁棒性进行了讨论,最后以Lorenz混沌系统为混沌参考模型的情况进行了仿真... 详细信息

基于滑模变结构控制,研究了不确定非线性系统模型到达混沌反控制,保证经有限时间,使受控不确定非线性系统达到与混沌参考系统数学模型完全一致,并就到达的快速性,鲁棒性进行了讨论,最后以Lorenz混沌系统为混沌参考模型的情况进行了仿真,仿真结果表明所给方法是有效的.

关键词：混沌系统 Lorenz系统变结构控制滑动流形

Resonance-assisted light–control–light characteristics of SnS_2 on a microfiber knot resonator with fast response

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Photonics Research 2018年第12期6卷 1137-1143页

作者： HUIHUI LU zhongMIN WANG ZHIJIN HUANG JUN TAO HANQING XIONG wenTAO QIU HEYUAN GUAN HUAZHUO DONG JIANGLI DONG wenGUO ZHU JIANHUI YU YONGCHUN zhong YUNHAN luo JUN ZHANG ZHE CHEN Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Department of Optoelectronic EngineeringJinan University Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan University

An all-optical light–control–light functionality with the structure of a microfiber knot resonator (MKR) coated with tin disulfide (SnS_2) nanosheets is experimentally demonstrated. The evanescent light in the MKR [with a resonance Q of ～59,000 and an extinction ratio (ER) of ～26 dB] is exploited to enhance light–matter interaction by coating a two-dimensional material SnS_2 nanosheet onto it. Thanks to the enhanced light–matter interaction and the strong absorption property of SnS_2, the transmitted optical power can be tuned quasi-linearly with an external violet pump light power, where a transmitted optical power variation rate ΔT with respect to the violet light power of ～0.22 dB∕mW is obtained. In addition, the MKR structure possessing multiple resonances enables a direct experimental demonstration of the relationship between resonance properties (such as Q and ER), and the obtained ΔT variation rate with respect to the violet light power. It verifies experimentally that a higher resonance Q and a larger ER can lead to a higher ΔT variation rate. In terms of the operating speed, this device runs as fast as ～3.2 ms. This kind of all-optical light–control–light functional structure may find applications in future all-optical circuitry, handheld fiber sensors, etc.

关键词： response fast experimental optical multiple pump can tin

IN VIVO ~1 H MAGNETIC RESONANCE SPECTROSCOPY IN EVALUATION OF HEPATOCELLULAR CARCINOMA AND ITS EARLY RESPONSE TO TRANSCATHETER ARTERIAL CHEMOEMBOLIZATION

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Chinese Medical Sciences Journal 2006年第4期21卷 258-264页

作者： Bin Wu Wei-jun Peng Pei-jun Wang Ya-jia Gu wen-tao Li Liang-pin Zhou Feng Tang Guo-ming zhong Department of Diagnostic Radiology Cancer Hospital Fudan University Shanghai 200032 Department of Radiology Tongji Hospital Tongji University Shanghai 200065

Objective To investigate the value of in vivo proton magnetic resonance spectroscopy （MRS） in the assessment of hepatocelhilar carcinoma （HCC） and monitor its metabolic change shortly after transcatheter arterial chemoembolization （TACE）. Mothoda In this prospective study, 28 consecutive patients with large HCC （ ≥3 cm in diameter） confirmed by fine needle aspiration biopsy were recruited. The ^1H MRS of all hepatic lesions and some uninvolved liver parenchyma were performed with 1.5T whole body MR scanner. Among them, 15 cases were evaluated again about one week after TACE. The main metabolites such as choline and lipid before and after interventional therapy were measured to assess the early response of the tumor. The technical success rate of IH MRS in liver was high （33/41, 80% ）, closely related to breath motion, location of lesion, and size of voxeL In spectra, the choline compound peak of HCC elevated compared with uninvolved liver parenchyma. After TACE, both the amplitude and the area of choline resonance peak significantly descended （ choline-to-lipid ratios from 0.352±0. 080 to 0. 167±0. 030, P = 0. 026; from 0. 205±0. 060 to 0. 070±0. 020, P = 0. 042, respectively ） ; yet lipid resonance peak ascended. Conclusions In vivo tH MRS is technically feasible for the evaluation of large focal hepatic lesions, however, the reproducibility and stability are not as good as routine MR scan. IH MRS can monitor the early stage metabolic changes of HCC after TACE but limitation like quantification still exists.

关键词： hepatocellular carcinoma magnetic resonance imaging proton magnetic resonance spectroscopy transcatheter arterial chemoembolization

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公立医院高质量发展人才考核评价体系探析

医院管理论坛 2024年第8期41卷 80-83页

作者：李紫薇赵俊范文青刘梦灵姜胜超蔡艳姬钟帆广州市第一人民医院/华南理工大学附属第二医院

科学合理的人才考核评价体系是激发人才创新创业活力的“指挥棒”。目前,公立医院在人才考核评价的指标、主体、方式和结果应用上存在不足,需进一步改进。基于分层分类、全面客观、注重实效的原则,提出四条改革建议:完善人才考核评价指... 详细信息

科学合理的人才考核评价体系是激发人才创新创业活力的“指挥棒”。目前,公立医院在人才考核评价的指标、主体、方式和结果应用上存在不足,需进一步改进。基于分层分类、全面客观、注重实效的原则,提出四条改革建议:完善人才考核评价指标、丰富人才考核评价主体、提高人才考核评价的信息化水平和提高人才考核评价结果运用的科学性。

关键词：公立医院高质量发展人才考核评价

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两株菌协同发酵鱼下脚料制备功能性宠物饲料

粮食与饲料工业 2024年第2期 68-71,75页

作者：钟玉婷朱佳雯吴珊刘莉菲冯红丽刘爱民安徽师范大学生命科学学院//重要生物资源保护与利用研究安徽省重点实验室安徽芜湖241000

为了提高有机废弃物在生产中的利用,探索新型功能性宠物饲料,以鱼下脚料为原料,通过单因素试验和正交试验探究最佳发酵条件,并添加猴头菇菌丝体和番茄渣制成功能性饲料。结果表明,最优发酵条件为枯草芽孢杆菌∶红酵母=2∶1,鱼下脚料添加... 详细信息

为了提高有机废弃物在生产中的利用,探索新型功能性宠物饲料,以鱼下脚料为原料,通过单因素试验和正交试验探究最佳发酵条件,并添加猴头菇菌丝体和番茄渣制成功能性饲料。结果表明,最优发酵条件为枯草芽孢杆菌∶红酵母=2∶1,鱼下脚料添加量30%、接菌量5%(V/V)、发酵温度30℃,发酵基质中添加烘干的2%猴头菇菌丝体和1%番茄渣,可显著增加原料中蛋白质和氨基酸含量,粗蛋白质含量提升率为73.71%,总氨基酸含量提升率为24.97%,其中,谷氨酸含量增加最为明显,提升率为98.98%。小鼠急性毒理试验表明,对照组与试验组无显著性差异(P>0.05),说明此饲料可应用于功能性宠物饲料的生产。该研究为今后鱼下脚料的发酵工艺提供了理论基础,且为宠物饲料的发展提供了新方向。

关键词：微生物发酵鱼下脚料宠物饲料粗蛋白质

维普期刊数据库博看期刊

低周反复荷载下核心高强混凝土柱抗震性能试验研究

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湖南大学学报（自然科学版） 2009年第12期36卷 6-12页

作者：齐岳郑文忠哈尔滨工业大学土木工程学院黑龙江哈尔滨150090

完成了9根以轴压比、核心高强混凝土面积为参数的核心高强混凝土柱水平低周反复荷载试验，描述了试验柱的破坏过程，测得了荷载-位移滞回曲线，分析了试验柱的耗能性能、抗力衰减、骨架曲线及延性性能．试验结果表明：对于剪跨比为3，... 详细信息

完成了9根以轴压比、核心高强混凝土面积为参数的核心高强混凝土柱水平低周反复荷载试验，描述了试验柱的破坏过程，测得了荷载-位移滞回曲线，分析了试验柱的耗能性能、抗力衰减、骨架曲线及延性性能．试验结果表明：对于剪跨比为3，轴压比n0=0．33～0．42的核心高强混凝土柱，在水平低周反复荷载作用下发生压弯破坏，滞回曲线饱满，无明显的捏缩现象，位移延性系数均大于3，延性较好．

关键词：低周反复荷载核心高强混凝土柱滞回曲线骨架曲线延性

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热处理对一种碳钢电阻焊管组织和性能的影响

材料热处理学报 2014年第S2期35卷 124-128页

作者：王荣郑姣雒设计杨忠文赵坤西安石油大学材料科学与工程学院陕西西安710065 宝鸡石油钢管有限责任公司陕西宝鸡721008

采用光学显微分析、显微硬度测试和腐蚀试验方法研究了一种碳钢电阻焊管焊接区的显微组织和性能。结果表明:电阻焊后焊接区因冷却速率快形成马氏体组织,硬度高,焊接区存在明显的选择性腐蚀,沿焊缝方向形成腐蚀沟槽,沟槽腐蚀的敏感性高... 详细信息

采用光学显微分析、显微硬度测试和腐蚀试验方法研究了一种碳钢电阻焊管焊接区的显微组织和性能。结果表明:电阻焊后焊接区因冷却速率快形成马氏体组织,硬度高,焊接区存在明显的选择性腐蚀,沿焊缝方向形成腐蚀沟槽,沟槽腐蚀的敏感性高。焊后的相变热处理可消除焊接区的马氏体组织,得到与母材相近的组织,但熔合线主要以铁素体为主,其显微硬度比母材偏低,选择性腐蚀集中在熔合线,其沟槽腐蚀敏感性明显降低。

关键词：电阻焊管热处理显微组织显微硬度选择性腐蚀