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Constructing low-dimensional perovskite network to assist efficient and stable perovskite solar cells

Journal of Energy Chemistry 2024年第9期96卷 625-632页

作者： Jinwen Gu Xianggang Sun Pok Fung Chan Xinhui Lu Peng Zeng Jue Gong faming li Mingzhen liu School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Department of Physics The Chinese University of Hong Kong Shatin999077Hong KongChina Sichuan University-Pittsburgh Institute Sichuan UniversityChengdu 610065China State Key Laboratory Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

The use of low-dimensional(LD)perovskite materials is crucial for achieving high-performance perovskite solar cells(PSCs).However,LD perovskite films fabricated by conventional approaches give rise to full coverage of the underlying 3D perovskite films,which inevitably hinders the transport of charge carriers at the interface of ***,we designed and fabricated LD perovskite structure that forms net-like morphology on top of the underlying three-dimensional(3D)perovskite bulk *** net-like LD perovskite not only reduced the surface defects of 3D perovskite film,but also provided channels for the vertical transport of charge carriers,effectively enhancing the interfacial charge transfer at the LD/3D *** net-like morphological design comprising LD perovskite effectively resolves the contradiction between interfacial defect passivation and carrier extraction across the ***,the net-like LD perovskite morphology can enhance the stability of the underlying 3D perovskite film,which is attributed to the hydrophobic nature of LD *** a result,the net-like LD perovskite film morphology assists PSCs in achieving an excellent power conversion efficiency of up to 24.6%with over 1000 h long-term operational stability.

关键词： Low-dimensional perovskite Network Carrier transport Perovskite solar cell Stability

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低维钙钛矿模板调控MAPbI3钙钛矿晶体生长与光伏性能的研究

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激光与光电子学进展 2024年第5期61卷 368-377页

作者：杨云云吴婧仪马胤译弓爵李发明电子科技大学材料与能源学院四川成都611731

钙钛矿太阳能电池材料因其低成本及优异的光电物理性能受到光伏领域的极大青睐。在双源蒸镀法制备钙钛矿光吸收层过程中,钙钛矿薄膜长期面临生长机制不明、结晶质量较差的问题,严重影响钙钛矿薄膜光吸收性质、载流子寿命等重要参量,阻... 详细信息

钙钛矿太阳能电池材料因其低成本及优异的光电物理性能受到光伏领域的极大青睐。在双源蒸镀法制备钙钛矿光吸收层过程中,钙钛矿薄膜长期面临生长机制不明、结晶质量较差的问题,严重影响钙钛矿薄膜光吸收性质、载流子寿命等重要参量,阻碍了气相沉积钙钛矿太阳能电池器件效率的提升。利用不同大半径有机阳离子设计准二维(2D)钙钛矿材料,在钙钛矿/空穴传输层界面构筑准2D钙钛矿缓冲层模板,调控气相蒸镀钙钛矿的晶体生长过程,获得了垂直生长的柱状钙钛矿晶粒,显著提升了钙钛矿层光吸收性能与载流子寿命,实现了钙钛矿太阳能电池效率从16.21%到19.55%的提升。上述结果为气相蒸镀实现优异光电性能的钙钛矿薄膜及光伏器件提供了有价值的参考。

关键词：钙钛矿材料载流子寿命晶体生长太阳能电池模板诱导生长

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天津市吕官屯村生态敏感性分析及生态建设策略研究

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景观设计 2024年第4期22卷 12-15页

作者：霍艳虹姜文婧李发明王硕天津城建大学建筑学院天津城建大学国际工程学院

生态敏感性评价能够预测生态环境遭受干扰和破坏的程度,可为区域土地资源合理利用和生态环境科学保护提供依据。以天津市吕官屯村为研究对象,从地形地貌、生境资源和人类活动三方面筛选影响因子并进行综合赋权,基于综合生态敏感性分析... 详细信息

生态敏感性评价能够预测生态环境遭受干扰和破坏的程度,可为区域土地资源合理利用和生态环境科学保护提供依据。以天津市吕官屯村为研究对象,从地形地貌、生境资源和人类活动三方面筛选影响因子并进行综合赋权,基于综合生态敏感性分析提出生态建设策略,为天津市吕官屯村的土地资源合理开发与利用、乡村生态环境保护提供科学依据,并促进区域生态与经济协同发展。

关键词：生态敏感性评价乡村生态保护

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The biogeochemical behavior of dissolved aluminum in the southern Yellow Sea:Influence of the spring phytoplankton bloom

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Chinese Science Bulletin 2013年第2期58卷 238-248页

作者： li faming REN Jingling YAN li liU SuMei liU ChengGang ZHOU Feng ZHANG Jing Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyState Oceanic Administration State Key Laboratory of Estuarine and Coastal Research East China Normal University

Many recent studies have investigated the nutrient-type profiles of dissolved aluminum(Al) in the *** scavenging of dissolved Al can occur during phytoplankton blooms,but the mechanism remains *** distribution of dissolved Al in the southern Yellow Sea(SYS) was investigated in winter and spring *** measurements at grid stations during the spring sampling cruise,two drifting anchor surveys of more than 100 h were conducted to trace the variation of dissolved Al concentration during the spring phytoplankton bloom(SPB).The concentration of dissolved Al in the SYS decreased from 40 nmol/L in February to 30 nmol/L in March and 10-20 nmol/L in April,while the concentration of Chl a increased from 4 μg/L in *** concentration of dissolved Al in the SYS decreased significantly with the development of the phytoplankton bloom,which indicated biological scavenging of dissolved Al from water *** proportion of dissolved Al scavenged from water column by different phytoplankton species differed at the two drifting stations,with greater removal efficiency demonstrated by diatoms than *** samples collected from the Chl a maximum layer were washed with trace metal clean reagent(oxalate-EDTA-citrate,abbreviate as oxalate solution,Tovar-Sanchez et al.,2003) to enable the surface-scavenged(extracellular) and intracellular Al pools associated with phytoplankton to be ***-nine to ninetysix percent of the total Al was found to be existed in the interior pools,which indicated that biological absorption was the important way to scavenge dissolved Al during phytoplankton blooms in the SYS.

关键词：浮游植物浮游生物溶解铝地球化学行为南黄海水华浓度增加春运期间

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基于建筑废物的人工湿地除磷滤料的制备及其性能

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环境工程技术学报 2024年第5期14卷 1572-1579页

作者：张震宇王泉龙发编沈琳珠周俊于会娟黎发明线二摆李雨欣大理大学工程学院大理大学农学与生物科学学院云南兆泓环境工程有限公司

高效、高容量的吸附滤料是提高人工湿地除磷效率的重要手段。以建筑废物(废混凝土和废泡沫砖)为主要原料制备多孔除磷滤料,采用X射线衍射和扫描电子显微镜对滤料主要化学组分和形貌特征进行表征,利用吸附动力学和吸附等温线试验、静态... 详细信息

高效、高容量的吸附滤料是提高人工湿地除磷效率的重要手段。以建筑废物(废混凝土和废泡沫砖)为主要原料制备多孔除磷滤料,采用X射线衍射和扫描电子显微镜对滤料主要化学组分和形貌特征进行表征,利用吸附动力学和吸附等温线试验、静态对比试验和动态试验评估了滤料对水中磷的吸附性能。结果表明:该滤料比表面积大、孔隙发达,内部微观结构为片层孔隙结构,比表面积为22.7 m^(2)/g;其吸附过程满足拟二级吸附动力学模型和Langmuir吸附等温模型,吸附机理以单分子层物理和化学复合吸附为主,最大吸附容量达到693.21 mg/g。在总磷浓度为0.4 mg/L的静态吸附试验中,多孔滤料在4 h内对磷的平均去除率为65.38%,分别是废混凝土、废泡沫砖、陶粒、硅藻土和活性炭的4.10、1.98、3.52、2.29和1.59倍。在模拟水平流潜流湿地动态试验中,在进水总磷浓度为0.40 mg/L,水力负荷为0.48、0.96、1.20、2.40 m^(3)/(m^(2)·d)的条件下,多孔滤料对总磷的平均去除率分别为95.74%、93.56%、80.42%、55.34%;在水力负荷为0.96 m^(3)/(m^(2)·d)、进水平均总磷浓度为0.52 mg/L、连续进水45 d条件下,多孔滤料对总磷的平均去除率为92.65%。该滤料制备方法简单,除磷性能优异,还实现了对建筑废物的有效利用,作为人工湿地填料具有应用潜力。

关键词：建筑废物人工湿地除磷多孔滤料

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面向真实场景的单帧红外图像超分辨率重建

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红外技术 2024年第4期46卷 427-436页

作者：师奕峰陈楠朱芳毛文彪李发明王添福张济清姚立斌昆明物理研究所云南昆明650223

现有的红外图像超分辨率重建方法主要依赖实验数据进行设计,但在面对真实环境中的复杂退化情况时,它们往往无法稳定地表现。针对这一挑战,本文提出了一种基于深度学习的新颖方法,专门针对真实场景下的红外图像超分辨率重建,构建了一个... 详细信息

现有的红外图像超分辨率重建方法主要依赖实验数据进行设计,但在面对真实环境中的复杂退化情况时,它们往往无法稳定地表现。针对这一挑战,本文提出了一种基于深度学习的新颖方法,专门针对真实场景下的红外图像超分辨率重建,构建了一个模拟真实场景下红外图像退化的模型,并提出了一个融合通道注意力与密集连接的网络结构。该结构旨在增强特征提取和图像重建能力,从而有效地提升真实场景下低分辨率红外图像的空间分辨率。通过一系列消融实验和与现有超分辨率方法的对比实验,本文方法展现了其在真实场景下红外图像处理中的有效性和优越性。实验结果显示,本文方法能够生成更锐利的边缘,并有效地消除噪声和模糊,从而显著提高图像的视觉质量。

关键词：红外图像深度学习超分辨真实场景退化模型

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Uncertainties of landslide susceptibility prediction:influences of different study area scales and mapping unit scales

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International Journal of Coal Science & Technology 2024年第2期11卷 143-172页

作者： faming Huang Yu Cao Wenbin li Filippo Catani Guquan Song Jinsong Huang Changshi Yu School of Civil Engineering and Architecture Nanchang UniversityNanchang 330031China Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring/School of Land Science and Space Planning Hebei GEO UniversityShijiazhuang 050031China Department of Geosciences University of PadovaPaduaItaly Discipline of Civil Surveying and Environmental EngineeringPriority Research Centre for Geotechnical Science and EngineeringUniversity of NewcastleCallaghanNSWAustralia School of Information Engineering Nanchang UniversityNanchang 330031China

This study aims to investigate the effects of different mapping unit scales and study area scales on the uncertainty rules of landslide susceptibility prediction(LSP).To illustrate various study area scales,Ganzhou City in China,its eastern region(Ganzhou East),and Ruijin County in Ganzhou East were *** mapping unit scales are represented by grid units with spatial resolution of 30 and 60 m,as well as slope units that were extracted by multi-scale segmentation *** 3855 landslide locations and 21 typical environmental factors in Ganzhou City are first determined to create spatial datasets with ***,landslide susceptibility maps(LSMs)of Ganzhou City,Ganzhou East and Ruijin County are pro-duced using a support vector machine(SVM)and random forest(RF),*** LSMs of the above three regions are then extracted by mask from the LSM of Ganzhou City,along with the LSMs of Ruijin County from Ganzhou ***,LSMs of Ruijin at various mapping unit scales are generated in *** and landslide suscepti-bility indexes(LSIs)distribution are used to express LSP *** LSP uncertainties under grid units significantly decrease as study area scales decrease from Ganzhou City,Ganzhou East to Ruijin County,whereas those under slope units are less affected by study area *** course,attentions should also be paid to the broader representativeness of large study *** LSP accuracy of slope units increases by about 6%–10%compared with those under grid units with 30 m and 60 m resolution in the same study area's *** significance of environmental factors exhibits an averaging trend as study area scale increases from small to *** importance of environmental factors varies greatly with the 60 m grid unit,but it tends to be consistent to some extent in the 30 m grid unit and the slope unit.

关键词： Landslide susceptibility prediction Uncertainty analysis Study areas scales Mapping unit scales Slope units Random forest

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The formation age and evolution of Kumtagh Desert

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Journal of Arid Land 2011年第2期3卷 114-122页

作者： JinNian TANG ZhiZhu SU Feng DING ShuJuan ZHU YouHao E XinWei ZHAI ZhiYu Yl HuJun liU JinChun ZHANGI faming li Minqin National Studies Station for Desert Steppe Ecosystem Minqin 733300 China State key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating Gansu Desert Control ResearchInstitute Lanzhou 730070 China School of History and Culture Shanxi University Taiyuan 030006 China Lanzhou University Lanzhou 730000 China

The ancient aeolian sand has been regarded as an indicator for the formation and evolution of a desert in the *** Desert is located at the northern fringe of Qinghai-Tibet *** first integrated scientific investigation to the desert was carried out during the period of *** Desert is an ideal natural model for studying the formation and evolution of the desert because the Quaternary strata containing ancient aeolian sands are widely *** integrated field investigation and studies on sedimentary,chronology and palynology of typical profiles named Suosuo gully,Xiaoquan gully and gravel body with ancient aeolian sand layers showed that Kumtagh Desert was probably formed as early as 2,097.7±314.7 ka *** the period of 386.9±58.0 ka BP to 285.9±42.9 ka BP,the desert largely expanded and formed its modern distribution *** desert was originally developed in the southwest,subsequently,expanded to the north and *** sedimentary facies of Suosuo gully profile revealed that the desert experienced at least 19 cycles of advance and inverse processes of desertification with an average period of 110 ka in the *** neotectonic movements played an important role in the formation,development and geomorphology of the *** one hand,the movements caused the formation of intermontane fault basin,which was further developed towards the closed drought basin,and caused the formation of natural *** the other hand,under the control of surrounding faults,the unique broom-shaped desert landscape was formed,and the gullies and sand ridges in this region experienced an abrupt directional change from north by west to north by east at the location of 39°45＇-39°55＇*** unique landscape of gravel body that occurred widely in the northern desert was formed after 285.9±42.9 ka *** results in this paper provide the scientific basis for studying the formation age and evolutionary process under the dry climate and

关键词： Kumtagh Desert formation age evolution ancient aeolian sand

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Shiyang River ecosystem problems and countermeasures

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Agricultural Sciences 2013年第2期4卷 72-78页

作者： faming li Guoqing Zhu Chunxiu Guo Gansu Desert Control Research Institute Lanzhou China Gansu Minqin National Studies Station for Desert Steppe Ecosystem Lanzhou China Gansu Key Laboratory of Desertification Combating Gansu Desert Control Research Institute Lanzhou China State Key Laboratory Breeding Base of Desertification and Aralian Sand Disaster Combating Gansu Desert Control Research Institute Wuwei China

With the increase of population and the development of social economy, contradiction between water supply and demand of Shiyang River Basin become more outstanding. Unreasonable exploitation and utilization of water resources cause the serious deterioration of ecological environment. According to the present ecoligical situation, by analyzing some actual problems of the ecosystem of Shiyang River Basin, a series of feasible control countermeasures are proposed. The article provide theoretical basis for the treatment and recovery of the degradation of ecological environment of Shiyang Rive Basin.

关键词： Degradation of Ecological Environment Water Resource Ecological Water Use Shiyang River Minqin Oasis

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Gingipain from Porphyromonas gingivalis causes insulin resistance by degrading insulin receptors through direct proteolytic effects

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International Journal of Oral Science 2024年第3期16卷 539-552页

作者： Fen liu Bofeng Zhu Ying An Zhifei Zhou Peiying Xiong Xuan li Yang Mi Tongqiang He faming Chen Buling Wu Shenzhen Stomatology Hospital(Pingshan) Southern Medical UniversityShenzhenChina Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research Laboratory Center of StomatologyDepartment of Paediatric DentistryCollege of StomatologyXi’an Jiaotong UniversityXi’anChina State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesDepartment of PeriodontologySchool of StomatologyThe Fourth Military Medical UniversityXi’anChina Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification School of Forensic MedicineSouthern Medical UniversityGuangzhouChina Microbiome Medicine Center Department of Laboratory MedicineZhujiang HospitalSouthern Medical UniversityGuangzhouChina Department of Stomatology General Hospital of Tibetan Military CommandLhasaChina Department of Stomatology Center Shenzhen HospitalSouthern Medical UniversityShenzhenChina Department of Obstetrics Northwest Women’s and Children’s HospitalXi’anChina

Periodontitis is a critical risk factor for the occurrence and development of *** gingivalis may participate in insulin resistance(IR)caused by periodontal inflammation,but the functional role and specific mechanisms of *** in IR remain *** the present study,clinical samples were analysed to determine the statistical correlation between *** and IR *** culturing of hepatocytes,myocytes,and adipocytes,and feeding mice *** orally,the functional correlation between *** and IR occurrence was further studied both in vitro and in *** data suggested that the amount of *** isolated was correlated with the Homeostatic Model Assessment for IR *** vitro studies suggested that coculture with *** decreased glucose uptake and insulin receptor(INSR)protein expression in hepatocytes,myocytes,and *** fed *** tended to undergo *** was detectable in the liver,skeletal muscle,and adipose tissue of experimental *** distribution sites of gingipain coincided with the downregulation of *** proteolysed the functional insulin-binding region of *** with *** significantly decreased the INSR–insulin binding *** out gingipain from *** alleviated the negative effects of *** on IR in *** together,these findings indicate that distantly migrated *** may directly proteolytically degrade INSR through gingipain,thereby leading to *** results provide a new strategy for preventing diabetes by targeting periodontal pathogens and provide new ideas for exploring novel mechanisms by which periodontal inflammation affects the systemic metabolic state.

关键词： gingivalis inflammation resistance

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