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Highly transparent anti-reflection coating enhances the underwater efficiency and stability of perovskite solar modules

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Nano Research 2024年第9期17卷 8126-8133页

作者： Feng Qian Shihao Yuan Ting Zhang Lei Wang xiaobo li Hualin Zheng Qien Xu Zhi David Chen Shibin li School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China Department of Electrical and Computer Engineering and Center for Nanoscale Science and Engineering University of KentuckyLexingtonKentucky 40506USA

Perovskite solar cells have shown great potential in the field of underwater solar cells due to their excellent optoelectronic properties;however,their underwater performance and stability still hinder their practical *** this research,a 1H,1H,2H,2H-heptadecafluorodecyl acrylate(HFDA)anti-reflection coating(ARC)was introduced as a high-transparent material for encapsulating perovskite solar modules(PSMs).Optical characterization results revealed that HFDA can effectively reduce reflection of light below 800 nm,aiding in the absorption of light within this wavelength range by underwater solar ***,a remarkable efficiency of 14.65%was achieved even at a water depth of 50 ***,the concentration of Pb^(2+)for HFDA-encapsulated film is significantly reduced from 186 to 16.5 ppb after being immersed in water for 347 ***,the encapsulated PSMs still remained above 80%of their initial efficiency after continuous underwater illumination for 400 ***,being exposed to air,the encapsulated PSMs maintained 94%of their original efficiency after 1000 h light *** highly transparent ARC shows great potentials in enhancing the stability of perovskite devices,applicable not only to underwater cells but also extendable to land-based photovoltaic devices.

关键词： underwater photovoltaics perovskite solar modules anti-reflection coating underwater stability

Theoretical perspectives on the reduction of Pu(Ⅳ)and Np(Ⅵ)by methylhydrazine in HNO_(3)solution:Implications for Np/Pu separation

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Chinese Chemical Letters 2024年第7期35卷 306-312页

作者： xiaobo li Qunyan Wu Congzhi Wang Jianhui Lan Meng Zhang Weiqun Shi Fundamental Science on Nuclear Safety and Simulation Technology Laboratory College of Nuclear Science and TechnologyHarbin Engineering UniversityHarbin 150001China Laboratory of Nuclear Energy Chemistry Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

Effective adjustment and control of the oxidation state of plutonium(Pu)and neptunium(Np)is an indispensable component of Np/Pu separation in spent nuclear fuel *** hydrazine derivatives including methylhydrazine(CH_(3)N_(2)H_(3))effectively achieves the reduction of Np(Ⅵ)to Np(V)without reducing Pu(Ⅳ).Herein,we explored the reduction mechanisms of Pu(Ⅳ)and Np(Ⅵ)by CH_(3)N_(2)H_(3)in HNO_(3)solution using scalar-relativistic density functional *** elucidated the difference in the reduction mechanism between Np(Ⅵ)and Pu(Ⅳ)ions by CH_(3)N_(2)H_(3).The energy barrier for the reduction of[NpⅥO_(2)(H_(2)O)_(5)]^(2+)and[NpⅥO_(2)(NO_(3))(H_(2)O)_(3)]^(+)by CH_(3)N_(2)H_(3)is largely different due to the coordination of nitrate ***,the energy barrier of the reduction of[NpⅥO_(2)(H_(2)O)_(5)]^(2+)is apparently lower than that of[PuⅣ(NO_(3))_(2)(H_(2)O)_(7)]^(2+),which is in line with the experimental *** results of Mayer bond order and localized molecular orbitals clarify the structural evolution of the reaction *** of the spin density demonstrates that the first Np(Ⅵ)and Pu(Ⅳ)reduction belongs to the outer-sphere electron transfer and the second Np(Ⅵ)and Pu(Ⅳ)reduction is the hydrogen *** study explains theoretically why CH_(3)N_(2)H_(3)reduces Np(Ⅵ)but not Pu(Ⅳ),and helps to design promising reductants for the Np/Pu separation in spent nuclear fuel reprocessing.

关键词： Neptunium Plutonium Methylhydrazine Reduction mechanism Np/Pu separation

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Comparative proteomics analysis reveals the domesticated Lepista sordida primordium differentiation regulation mechanism and the subsequent different development patterns in the pileus and stipe

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Food Science and Human Wellness 2024年第5期13卷 3066-3082页

作者： Xiuqing Yang Meijie liu Yanjiao Zhang lizhong Guo Junqi Wang Sizhu li Yan Zhang xiaobo li lili Xu Hao Yu Shandong Provincial Key Laboratory of Applied Mycology School of Life SciencesQingdao Agricultural UniversityQingdao 266109China Shandong Agricultural Technology Extending Station Jinan 250100China Shandong Mushroom Industrial Technology Innovation Research Institute Jining 273500China

The wild Lepista sordida is a kind of precious and rare edible *** excellent strain of it by artificial domestication was obtained,which was high-yield and high in iron *** this study,high-throughput comparative proteomics was used to reveal the regulatory mechanism of its primordium differentiation in the early fruiting body *** mycelium before the primordium differentiation mainly expressed high levels of mitochondrial functional proteins and carbon dioxide concentration regulatory *** young mushrooms,the highly expressed proteins were mainly involved in cell component generation,cell proliferation,nitrogen compound metabolism,nucleotide metabolism,glutathione metabolism,and purine *** differential regulation patterns of pileus and stipe growth to maturity were also *** highly expressed proteins related to transcription,RNA splicing,the production of various organelles,DNA conformational change,nucleosome organization,protein processing,maturation and transport,and cell detoxification regulated the pileus development and *** proteins related to carbohydrate and energy metabolism,large amounts of obsolete cytoplasmic parts,nutrient deprivation,and external stimuli regulated the stipe development and *** CAZymes regulated nutrient absorption,morphogenesis,spore production,stress response,and other life activities at different growth and development stages.

关键词： Lepista sordida Comparative proteomics Primordial differentiation Growth and development regulation Pileus Stipe

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大汶河流域中下游浅层地下水水化学特征及其影响因素

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环境科学研究 2024年第5期37卷 1015-1026页

作者：李晓波李静中国地质大学(武汉) 湖北武汉430074 山东省地质矿产勘查开发局第五地质大队山东泰安271000

泰安市是黄河流域下游高质量发展的主战场,地下水是其重要的供水水源.为查明大汶河流域中下游地区浅层地下水水化学特征及其影响因素,采集浅层地下水80组,对其12项化学指标进行检测分析.综合运用数理统计、离子比值、水化学图解、饱和... 详细信息

泰安市是黄河流域下游高质量发展的主战场,地下水是其重要的供水水源.为查明大汶河流域中下游地区浅层地下水水化学特征及其影响因素,采集浅层地下水80组,对其12项化学指标进行检测分析.综合运用数理统计、离子比值、水化学图解、饱和指数等方法系统地分析了水化学组分的空间分布、水化学特征,讨论了控制水化学组分的主要离子来源及其影响因素.结果表明:①大汶河流域中下游浅层地下水pH介于6.52~8.00之间,TDS(溶解性总固体)浓度介于364.00~2627.00 mg/L之间,以淡水、微咸水为主,由东向西沿着地下水流向逐渐升高;TH(总硬度)介于245.06~1235.02 mg/L之间,以硬水、极硬水为主.②地下水中阳离子以Ca^(2+)为主,阴离子无主导成分,以混合型为主,研究区内浅层地下水水化学类型较为复杂,以HCO_(3)-Ca型、HCO_(3)·SO_(4)-Ca型为主,同时出现了NO_(3)型水,建设用地水化学类型多达14种,其次为耕地(13种)和林地(6种).③地下水中主要离子来源于碳酸盐岩、硅酸盐岩的风化溶解,岩盐、石膏处于不饱和状态,方解石、白云石处于溶解沉淀的平衡状态.研究显示,大汶河流域中下游浅层地下水水化学特征主要受水岩相互作用控制,阳离子交替吸附作用较弱,同时也受到了农业和工业等人类活动的影响.

关键词：大汶河浅层地下水水化学特征 Gibbs图土地利用类型

基于低频暂态零序电流畸变率的灵活接地系统高阻接地保护

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电力系统自动化 2024年第13期48卷 171-183页

作者：李晓波张世乐彭超红中国矿业大学电气工程学院江苏省徐州市221116

灵活接地系统中,基于稳态故障特征构成的单相接地保护普遍存在耐过渡电阻能力低的问题,并联小电阻投入后该问题进一步突出。文中研究了并联小电阻投入后故障线路与非故障线路低频暂态零序电流中暂态直流分量比值关系,发现暂态直流分量... 详细信息

灵活接地系统中,基于稳态故障特征构成的单相接地保护普遍存在耐过渡电阻能力低的问题,并联小电阻投入后该问题进一步突出。文中研究了并联小电阻投入后故障线路与非故障线路低频暂态零序电流中暂态直流分量比值关系,发现暂态直流分量比值仅与对地电容有关。分析了故障线路与非故障线路低频暂态零序电流畸变率之间比值关系,进一步提出了一种基于低频暂态零序电流畸变率的灵活接地系统单相高阻接地故障选线方法。通过比较特定时间窗口内各馈线低频暂态零序电流畸变率的大小实现故障选线,并可准确区分母线故障与出线故障。该方法能够避免零序电压互感器断线与零序电流互感器极性反接的影响,且受故障距离影响小。同时,该方法采用暂态故障特征构成选线判据,有利于克服并联小电阻投入后稳态故障分量微弱的问题,对互感器精度要求不高。最后,通过实时数字仿真和实验平台分别验证了所述方法的准确性和有效性。

关键词：配电网灵活接地系统低频暂态零序电流零序电压高阻接地故障

Targeting FAPα-positive lymph node metastatic tumor cells suppresses colorectal cancer metastasis

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Acta Pharmaceutica Sinica B 2024年第2期14卷 682-697页

作者： Shuran Fan Ming Qi Qi Qi Qun Miao lijuan Deng Jinghua Pan Shenghui Qiu Jiashuai He Maohua Huang xiaobo li Jie Huang Jiapeng lin Wenyu Lyu Weiqing Deng Yingyin He Xuesong liu Lvfen Gao Dongmei Zhang Wencai Ye Minfeng Chen State Key Laboratory of Bioactive Molecules and Druggability Assessment Jinan UniversityGuangzhou 510632China Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research College of PharmacyJinan UniversityGuangzhou 510632China School of Medicine Jinan UniversityGuangzhou 510632China School of Traditional Chinese Medicine Jinan UniversityGuangzhou 510630China The First Affiliated Hospital of Jinan University Guangzhou 510632China State Key Laboratory of Chemical Oncogenomics Guangdong Provincial Key Laboratory of Chemical BiologyTsinghua Shenzhen International Graduate SchoolShenzhen 518055China

Lymphatic metastasis is the main metastatic route for colorectal cancer, which increases the risk of cancer recurrence and distant metastasis. The properties of the lymph node metastatic colorectal cancer(LNM-CRC) cells are poorly understood, and effective therapies are still lacking. Here, we found that hypoxia-induced fibroblast activation protein alpha(FAPα) expression in LNM-CRC cells. Gain-or loss-function experiments demonstrated that FAPα enhanced tumor cell migration, invasion, epithelial-mesenchymal transition, stemness, and lymphangiogenesis via activation of the STAT3 pathway. In addition, FAPα in tumor cells induced extracellular matrix remodeling and established an immunosuppressive environment via recruiting regulatory T cells, to promote colorectal cancer lymph node metastasis(CRCLNM). Z-GP-DAVLBH, a FAPα-activated prodrug, inhibited CRCLNM by targeting FAPα-positive LNM-CRC cells. Our study highlights the role of FAPα in tumor cells in CRCLNM and provides a potential therapeutic target and promising strategy for CRCLNM.

关键词： Lymphaticmetastasis Colorectal cancer Fibroblastactivation proteinα FAPα-activated prodrug Epithelial-mesenchymal

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前交叉韧带重建股骨骨道定位研究进展

中国修复重建外科杂志 2024年第4期38卷 498-504页

作者：李晓波李翰林卢佳俊丁然中国人民解放军中部战区总医院骨科武汉430070 南方医科大学第一临床医学院广州510515

目的对前交叉韧带(anterior cruciate ligament,ACL)重建手术中股骨骨道定位理念和定位方法进行综述,以期为临床治疗提供参考。方法广泛查阅国内外关于ACL重建术中股骨骨道定位理念及定位方法的研究文献,并对其归纳和总结。结果股骨骨... 详细信息

目的对前交叉韧带(anterior cruciate ligament,ACL)重建手术中股骨骨道定位理念和定位方法进行综述,以期为临床治疗提供参考。方法广泛查阅国内外关于ACL重建术中股骨骨道定位理念及定位方法的研究文献,并对其归纳和总结。结果股骨骨道位置是决定ACL重建术预后的关键因素。ACL重建术股骨骨道定位理念经历了等长重建、解剖重建、Ribbon-like理论、I.D.E.A.L.理论和类等长重建理论。股骨骨道定位技术也随着对ACL解剖及生物力学的深入研究而不断变化,每种骨道定位技术各有优缺点。Over-The-Top(过顶位)技术目前主要用于ACL的翻修;时钟面定位法由于误差较大、稳定性差、可复性低,基本已不使用;骨性标志定位法(股骨外侧髁的住院医师嵴和分叉嵴、外侧髁后软骨缘顶点)由于解剖标志较为恒定,临床上多采用此法;X线透视下象限法由于术中实施较为繁琐,主要用于学术研究和术后骨道评估;计算机导航辅助骨道定位精确性高,避免了人为因素对骨道定位的影响,具有良好应用前景;3D打印辅助定位骨道技术定位精确,可复性高,学习曲线短。结论ACL重建术股骨骨道定位理念历经多次演变,反映了对ACL理解的深入和重建术临床效果的提高。定位技术的精确化、个性化和智能化是未来发展重点。

关键词：前交叉韧带韧带重建股骨骨道骨道定位

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无人集群体系设计与仿真评估方法

国防科技大学学报 2024年第3期46卷 126-136页

作者：杨松王维平李小波周鑫井田国防科技大学系统工程学院湖南长沙410073

无人集群作战正在成为一种改变战争形态的新型作战样式。针对当前无人装备试验相对独立、缺乏一体化闭环设计与集成验证手段的问题,提出了一种体系设计与仿真评估方法。该方法包含了作战概念建模与需求分析、体系设计理念与体系设计、... 详细信息

无人集群作战正在成为一种改变战争形态的新型作战样式。针对当前无人装备试验相对独立、缺乏一体化闭环设计与集成验证手段的问题,提出了一种体系设计与仿真评估方法。该方法包含了作战概念建模与需求分析、体系设计理念与体系设计、内场仿真实验与方案探索、体系原型研发与评估优化、外场集成试验与综合决策五个阶段,创新发展了体系设计、仿真试验、评估优化的理论方法、工具链路、集成环境,为无人集群的体系化、智能化、实战化提供了一定的理论与技术支撑。

关键词：无人集群体系设计仿真评估一体化闭环设计集成验证

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地铁列车牵引系统状态评估方法研究

铁道机车车辆 2024年第2期44卷 138-144页

作者：李小波张程吴浩上海工程技术大学城市轨道交通学院上海201620 上海地铁电子科技有限公司上海200233

充分挖掘现场故障统计数据,提出一种地铁列车牵引系统状态评估方法。首先基于牵引系统故障树建立层次分析模型,构建各层级评判矩阵并确定权重,然后计算牵引系统各模块基本事件的灰色聚类系数,完成对系统模块层的状态评估,最后利用各模... 详细信息

充分挖掘现场故障统计数据,提出一种地铁列车牵引系统状态评估方法。首先基于牵引系统故障树建立层次分析模型,构建各层级评判矩阵并确定权重,然后计算牵引系统各模块基本事件的灰色聚类系数,完成对系统模块层的状态评估,最后利用各模块聚类系数构建牵引系统模糊综合评判矩阵,采用模糊综合评判法对牵引系统整体的健康状态进行评估。结果表明,牵引逆变模块和牵引控制单元板卡是该车型地铁列车牵引系统的薄弱环节,应作为检修与维护中的重点对象。该评估方法综合利用故障树—层次分析法确定权重,降低了人为因素的影响,其评估结果可为地铁列车牵引系统主动维护和检修提供有效依据。

关键词：地铁列车主客观结合赋权模糊灰色聚类牵引系统状态评估