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Conjugated ladder-type polymers with multielectron reactions as high-capacity organic anode materials for lithium-ion batteries

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Science China Materials 2022年第9期65卷 2354-2362页

作者： Jie Yu Xinyu Chen Heng-guo Wang Bo Gao donglai Han Zhenjun Si Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education and Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China

Ladder-type conjugated polymers(LCPs)have attracted extensive attention in rechargeable lithium-ion batteries(liBs)due to their inherent stability,poor solubility,tunable structure,and strongπ-πintermolecular ***,we describe the synthesis of two heteroatom nitrogen/oxygen-rich LCPs(TABQ-NTCDA,named TNL,and TABQPMDA,named TPL)by the polycondensation reaction of tetromino-benzoquinone(TABQ)and aromatic *** from the rigid backbone,the large conjugated skeleton and the heteroatom-driven superlithiation process in polycyclic aromatic systems,heteroatom nitrogen/oxygen-rich LCPs acting as organic anode materials for liBs display high specific capacity and long-term cycle *** particular,TNL displays a high reversible capacity of 1063.5 mA h g^(-1) at 0.05 A g^(-1),good cyclic performance with a capacity retention of 75.2% after 1000 cycles at 1 A g^(-1),and excellent rate capability of 260.6 mA h g^(-1) even at 2 A g^(-1).In addition,the superlithiation storage mechanism was further confirmed by theoretical calculations,suggesting multiple active sites of C=O,C=N,and aromatic rings for lithium-ion ***,a full cell is also assembled by pairing a TNL anode with a liCoO_(2) cathode,indicating the feasibility of practical application.

关键词： ladder-type conjugated polymers polycyclic aromatic systems multielectron reactions superlithiation mechanism lithium-ion batteries

超声造影技术在非扩张肾脏集合系统肾结石患者经皮肾镜手术中的应用

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微创泌尿外科杂志 2024年第4期13卷 240-247页

作者：陈海瑞李寿鹏田霁松沈东来王威罗渝昆李秋洋张旭麦海星解放军总医院第三医学中心泌尿外科医学部北京100039 安徽医科大学第五临床医学院合肥23003 解放军总医院第一医学中心超声诊断科北京100853

目的:对比超声造影(CEUS)和常规超声引导下应用于非扩张肾脏集合系统肾结石患者的经皮肾镜取石术(PCNL),评估CEUS引导的PCNL的有效性、安全性和可行性。方法:研究纳入解放军总医院第一医学中心收治接受PCNL的66例无肾积水或轻度肾积水... 详细信息

目的:对比超声造影(CEUS)和常规超声引导下应用于非扩张肾脏集合系统肾结石患者的经皮肾镜取石术(PCNL),评估CEUS引导的PCNL的有效性、安全性和可行性。方法:研究纳入解放军总医院第一医学中心收治接受PCNL的66例无肾积水或轻度肾积水肾结石患者,根据通道建立引导方法的不同分为CEUS引导组(33例)和常规超声引导组(33例)。评估单针穿刺成功率、穿刺时间、穿刺次数、通道建立时间、手术时间、残石率等指标及术后并发症发生情况。采用SPSS22.0统计软件进行统计学分析。结果:相比于常规超声引导组,CEUS引导组首次穿刺成功率高(84.85%vs.63.64%,χ^(2)=3.89,P=0.04)、穿刺时间短[(51.18±18.47)s vs.(63.21±23.79)s,t=-2.29,P=0.03]、手术时间短[(73.81±39.84)minvs.(113.44±51.99)min,t=-3.46,P0.05)。结论:CEUS引导下的PCNL可促进无肾积水患者的PCNL,有利于单针穿刺成功率高,穿刺时间短,手术时间短。可通过后续大样本量研究进一步确定其临床推广价值。

关键词：超声造影经皮肾镜免人工肾积水激光碎石取石

超声造影定量评估肾脏血流灌注在经皮肾镜取石术中的应用价值

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微创泌尿外科杂志 2024年第4期13卷 235-239页

作者：田霁松李寿鹏麦海星沈东来王威陈海瑞张旭李秋洋罗渝昆兰州大学第二临床医学院兰州730030 解放军总医院第一医学中心超声诊断科北京100853 解放军总医院第三医学中心泌尿外科医学部北京100039

目的:探讨超声造影(CEUS)定量评估肾脏血流灌注在经皮肾镜取石术(PCNL)中的应用价值。方法:前瞻性纳入2024年1月至2024年4月在解放军总医院第一医学中心进行双重超声造影引导的PCNL的肾结石患者21例,均于术前2 d、术后2周进行CEUS检查... 详细信息

目的:探讨超声造影(CEUS)定量评估肾脏血流灌注在经皮肾镜取石术(PCNL)中的应用价值。方法:前瞻性纳入2024年1月至2024年4月在解放军总医院第一医学中心进行双重超声造影引导的PCNL的肾结石患者21例,均于术前2 d、术后2周进行CEUS检查。比较PCNL前结石压迫区肾皮质与非结石压迫区肾皮质造影参数[峰值强度(PI)、到达时间(AT)、达峰时间(TTP)、曲线下面积(AUC)],PCNL前后结石压迫区肾皮质造影参数,以及PCNL后结石压迫区肾皮质与非结石压迫区肾皮质造影参数的差异。统计学方法采用配对样本t检验、配对样本Wilcoxon符号秩检验分析等。结果:PCNL前,结石压迫区肾皮质PI、AUC明显低于非结石压迫区,AT、TTP高于非结石压迫区,差异均有统计学意义(均P0.05)。PCNL后结石压迫区肾皮质PI、AUC与非结石压迫区肾皮质比较差异无统计学意义(P>0.05),AT、TTP与非结石压迫区肾皮质比较差异有统计学意义(P<0.05)。结论:PCNL解除肾结石后能明显改善肾内血流灌注情况,CEUS在评估局部肾功能、PCNL疗效和术后肾功能随访中具有重要的临床意义。

关键词：超声造影经皮肾镜取石术血流灌注

Basic requirements of dunk tank settings and verification of the disinfection effect in high-level biosafety laboratories

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Biosafety and Health 2020年第3期2卷 120-123页

作者： Dong Wang Baiming Sun Xianfeng Zhang Hailong Tong Xiaoyu Zhang Yunting Bu Weiyu li Si Chen donglai Wu Harbin Veterinary Research Institute Chinese Academy of Agricultural SciencesHarbin 150000China

This study presents the structure and application of dunk tanks in high-level biosafety *** test methods and sterilization effects of dunk tanks were evaluated by using Bacillus subtilis as *** showed that sterilization effects of dunk tanks could be achieved by immersing the goods in 0.5%sodium hypochlorite disinfectant solution for 30 min at room *** sodium thiosulfate had no effect on the growth of Bacillus subtilis,and thus would not affect the disinfection results of sodium ***,suggestions for safe operation of dunk tanks are also provided in this study.

关键词： Biosafety laboratory Dunk tank Disinfection Sodium hypochlorite Sodium thiosulfate Bacillus subtilis Neutralization

超声引导肾锥体精准穿刺钝性分离法在无积水肾盂造瘘术中的临床应用:一种无积水肾盂造瘘新方法

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微创泌尿外科杂志 2024年第4期13卷 252-256页

作者：李寿鹏麦海星田霁松沈东来王威陈海瑞张旭李秋洋罗渝昆解放军总医院第一医学中心超声诊断科北京100853 解放军总医院第三医学中心泌尿外科医学部北京100039

目的:探讨超声造影辅助下超声引导肾锥体精准穿刺钝性分离法在无积水肾盂造瘘术中的临床应用情况。方法:回顾性分析2022年5月至2024年4月在解放军总医院第一医学中心进行超声引导下无积水肾盂造瘘的患者11例,其中单侧肾盂造瘘6例,双侧... 详细信息

目的:探讨超声造影辅助下超声引导肾锥体精准穿刺钝性分离法在无积水肾盂造瘘术中的临床应用情况。方法:回顾性分析2022年5月至2024年4月在解放军总医院第一医学中心进行超声引导下无积水肾盂造瘘的患者11例,其中单侧肾盂造瘘6例,双侧肾盂造瘘5例,共16例次无积水肾盂穿刺造瘘术。均在超声引导下徒手穿刺目标肾锥体并采用钝性分离法置入导丝。统计穿刺过程中的首次穿刺成功率、平均穿刺针数、穿刺时间、总置管时间、并发症情况。结果:所有患者均穿刺成功,首针穿刺成功率为81.25%,平均穿刺针数为1.19±0.4、平均穿刺时间为(122.19±22.55)s、平均置管时间为(674.19±46.61)s;所有肾盂穿刺造瘘均未出现活动性出血及其他严重并发症,2例次术后第2天引流不畅重新调整引流管。结论:超声造影辅助下超声引导肾锥体精准穿刺钝性分离法在无积水肾盂造瘘术中应用效果良好,具有较高的安全性和可行性,为泌尿系损伤无法行输尿管支架的患者提供了安全有效的治疗方法,值得推广。

关键词：无积水肾盂造瘘肾锥体精准穿刺钝性分离超声造影超声引导下经皮肾盂穿刺造瘘术

Unsupervised Representation Learning of Image-Based Plant Disease with Deep Convolutional Generative Adversarial Networks

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Unsupervised Representation Learning of Image-Based Plant Di...

Study on Quantitative Character for Anatomy in Tomato Seedling Stem

第37届中国控制会议

作者： Jie li Junjie Jia donglai Xu School of Electrical and Electronic Engineering Wuhan Polytechnic University School of Science and Engineering Teesside University

Rapid identification of plant disease is essential for food *** learning,the latest breakthrough in computer vision,is promising for plant disease severity classification,as the method avoids the labor-intensive feature engineering and threshold-based *** a public dataset of 54,306 images of diseased and healthy plant leaves collected under controlled conditions,a deep convolutional neural network and unsupervised methods are used to identify 14 crop species and 26 *** trained model achieves an accuracy of 89.83%on a held-out test set,demonstrating the feasibility of this approach.

关键词： Unsupervised Representation Learning Plant Disease Deep Convolutional Generative Adversarial Networks

来源： cnki会议评论

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Journal of Northeast Agricultural University(English Edition) 2009年第1期16卷 14-18页

作者： li Fuheng WEI liyan YU Longfeng QI donglai ZHANG Da College of life Sciences Northeast Agricultural University Harbin 150030 China

The results of quantitative characters for anatomy in stems of three varieties tomatoes seedlings showed that the cell population between vascular bundle and epidermis, the cellular layers among vascular bundles and the cell population in an unit area （mm^2） of no vascular bundle areas were similar and there had small difference among three varieties. On the foundation of these studies, the developmental mechanism of tomato seedling stem was discussed.

关键词： Lycopersicun esculentum stem anatomic structure quantitative character development

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基于改进DE算法的敏捷成像卫星前摄式调度

系统工程与电子技术 2018年第2期40卷 353-359页

作者：李志亮李小将张东来航天工程大学研究生院北京101416 航天工程大学宇航科学与技术系北京101416 酒泉卫星发射中心甘肃酒泉732750

针对卫星资源失效或应急任务加入对敏捷成像卫星前摄式调度的影响,构建了鲁棒模型,提出了一种改进差分进化(differential evolution,DE)算法。首先,考虑卫星资源失效概率、任务执行主从窗口构建了期望收益和松弛时间指标,将这两个指标... 详细信息

针对卫星资源失效或应急任务加入对敏捷成像卫星前摄式调度的影响,构建了鲁棒模型,提出了一种改进差分进化(differential evolution,DE)算法。首先,考虑卫星资源失效概率、任务执行主从窗口构建了期望收益和松弛时间指标,将这两个指标作为优化目标构建了前摄式调度鲁棒模型;然后,针对该模型的多目标优化特性,在传统DE算法的基础上,重新设计了变异、交叉和选择算子,增加了外部存档更新策略,优化了Pareto解集评价指标,提出一种多目标离散差分进化(multi-objective discrete differential evolution,MDDE)算法,并给出了算法的实现步骤;最后,仿真结果表明,与NSGA-Ⅱ算法相比,MDDE在Pareto解集评价指标上提高了10.42%左右,在求解时间上降低了9.72%左右,为敏捷成像卫星前摄式调度提供了一定的方法支撑。

关键词：敏捷成像卫星前摄式调度鲁棒模型差分进化多目标优化

Carrier balance and linear magnetoresistance in type-II Weyl semimetal WTe2

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Frontiers of physics 2017年第3期12卷 73-80页

作者： Xing-Chen Pan Yiming Pan Juan Jiang Huakun Zuo Huimei liu Xuliang Chen Zhongxia Wei Shuai Zhang Zhihe Wang Xiangang Wan Zhaorong Yang donglai Feng Zhengcai Xia liang li Fengqi Song Baigeng Wang Yuheng Zhang Guanghou Wang National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Colleae of Physics. Naniina University. Nanjina 210093. China State Key Laboratory of Surface Physics Coliaborative Innovation Center of Advanced MicrostructuresDepartment of Physics and Advanced Materials Laboratory Fudan University Shanghai 200433 China Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan 430074 China High Magnetic Field Laboratory Chinese Academy of Sciences Hefei 230031 China

Unsaturated magnetoresistance （MR） has been reported in type-II Weyl semimetal WTe2, manifested as a perfect compensation of opposite carriers. We report linear MR （LMR） in WTe2 crystals, the onset of which was identified by constructing the MR mobility spectra for weak fields. The LMR further increased and became dominant for fields stronger than 20 T, while the parabolic MR gradually decayed. The LMR was also observed in high-pressure conditions.

关键词： WTe2 type-II Weyl semimetal carrier balance linear magnetoresistance