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Modulating MAPbI3 perovskite solar cells by amide molecules:Crystallographic regulation and surface passivation

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Journal of Energy Chemistry 2021年第5期30卷 179-185页

作者： Jin Xie Ziren Zhou hongwei qiao Mengjiong Chen Lijie Wang Shuang Yang Yu Hou Huagui Yang Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

A controllable crystallization is of practical importance to produce high-quality perovskite thin films with reduced structural *** bases as electron-pair donor chemicals can strongly coordinate to lead ions and have been extensively employed to manipulate the growth of perovskite *** this work,we demonstrate a series of Lewis-base amides,for morphological regulation of methylammonium lead triiodide(MAPbI3)thin *** screened acetamide was demonstrated to decently improve the grain size,along with a spatial distribution at grain boundaries(GBs).The mesostructured solar cells of acetamide-modified absorbers yielded an optimized power conversion efficiency(PCE)of 20.04%with a mitigated open-circuit voltage(V_(OC))deficit of 0.39 *** work provides a facile and cost-effective strategy toward controllable fabrication of high-performance MAPbI3 solar cells.

关键词： Amide Methylammonium lead triiodide Crystallization Solar cell

Conditional probability Markov chain simulation based reliability analysis method for nonnormal variables

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Science China(Technological Sciences) 2010年第5期53卷 1434-1441页

作者： YUAN XiuKai,LU ZhenZhou & qiao hongwei School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China School of Aeronautics Northwestern Polytechnical University Xi’an China

Based on fast Markov chain simulation for generating the samples distributed in failure region and saddlepoint approximation(SA) technique,an efficient reliability analysis method is presented to evaluate the small failure probability of non-linear limit state function(LSF) with non-normal *** the presented method,the failure probability of the non-linear LSF is transformed into a product of the failure probability of the introduced linear LSF and a feature ratio *** introduced linear LSF which approximately has the same maximum likelihood points as the non-linear LSF is constructed and its failure probability can be calculated by SA *** feature ratio factor,which can be evaluated on the basis of multiplicative rule of probability,exhibits the relation between the failure probability of the non-linear LSF and that of the linear LSF,and it can be fast computed by utilizing the Markov chain algorithm to directly simulate the samples distributed in the failure regions of the non-linear LSF and those of the linear ***,the expectation and variance of the failure probability estimate are *** results of several examples demonstrate that the presented method has wide applicability,can be easily implemented,and possesses high precision and high efficiency.

关键词： reliability failure probability Markov chain Monte Carlo

Effectively improved piezoelectricity in high-temperature Arrhenius CBT ceramics by modifying potential energy profile and spontaneous polarization

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Journal of Advanced Ceramics 2024年第8期13卷 1143-1152页

作者： Jingwen Xi Linlin Liu hongwei qiao Jiacheng Luo Xin Su Xin Zhao Yugen Xu Hao Chen Zhi Tan Jianguo Zhu Nuclear Power Institution of China Chengdu 610213China College of Materials Science and Engineering Sichuan UniversityChengdu 610064China

Enhancing the piezoelectricity of CaBi_(4)Ti_(4)O_(15)(CBT)ceramics is crucial for improving their application potential in high-temperature piezoelectric ***,we propose a strategy involving the introduction of larger Na/Bi ions at the A-site,effectively inhibiting the tilt of oxygen octahedra and flattening the potential energy *** flattening enhances the variation in polarization under external ***,substituting Nb/Mn at the B-site increases the deviation between positive and negative ionic centers,leading to stronger spontaneous polarization,while the induced defect dipoles restrict oxygen vacancy migration and increase the direct current resistivity(ρ_(dc)).The flattened potential energy profile and increased spontaneous polarization significantly enhance the overall performance of cBT ceramics,with the piezoelectric constant(d_(33))reaching 25 pC/N when the Curie temperature(Tc)=752℃.Piezoresponse force microscopy(PFM)and transmission electron microscopy(TEM)revealed submicron-long rectangular domains and nanoscale domains in the modified composition,indicating a high density of domain *** study presents an effective approach for enhancing the piezoelectric properties of bismuth layered-structured ferroelectrics(BLSFs),thereby improving the application potential of BLSFsathightemperatures.

关键词： piezoelectricity bismuth layered-structured ferroelectrics(BLSFs) potential energy profile spontaneous polarization high temperatures

The protection of CoronaVac against the infection of wild-type SARS-CoV-2(WH-09)or Omicron variant in nude-hACE2 mice

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Animal Models and Experimental Medicine 2023年第4期6卷 346-354页

作者： Kaili Lin Meixuan Liu Lu Sun Hanjun Fu hongwei qiao Shunyi Wang Sidan Pan Hong Gao Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Background:Immunocompromised individuals have an increased risk of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection and severe outcomes,but we pay less attention to these *** nude mice are a murine strain with a spontaneous deficiency of the Foxn1 gene,which can result in thymic degeneration or its absence,leading to immunosuppression and a decrease in the number of T cells,and are widely used in preclinical evaluations of disease in immunocompromised ***:We investigated the protection of the coronavirus disease 2019(COVID-19)inactivated vaccine(CoronaVac)against the infection of wild-type SARS-CoV-2(WH-09)or Omicron variant utilizing a hybrid-type nude-hACE2 mouse ***:Compared with nude-hACE2/W mice,the viral load in the brain and lung tissue of nude-hACE2 mice(nude-hACE2/WV)infected with WH-09 after vaccination significantly decreased,and the histopathological changes were also *** viral load in the brain and lung tissue of nude-hACE2 mice(nude-hACE2/OV)infected with the Omicron variant after vaccination was lower than that in nude-hACE2/O,but histopathological symptoms did not improve ***:CoronaVac provides some protection against infection of both WH-09 and the Omicron variant in the nude-hACE2 *** findings aimed to provide a reference for vaccination against SARS-CoV-2 in immunocompromised populations.

关键词： immunocompromised nude-hACE2 mice protection severe acute respiratory syndrome coronavirus 2

Laboratory biosafety emergency management for SARS-CoV-2

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Journal of Biosafety and Biosecurity 2020年第2期2卷 99-101页

作者： Kaili Lin Meixuan Liu Haoran Ma Sidan Pan hongwei qiao Hong Gao Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences&Comparative Medicine CenterPeking Union Medical CollegeBeijing 100021China

A biosafety laboratory is a prerequisite for studying emerging infectious *** and effective operation in laboratories and the handling of pathogens determine the safety of the personnel,pathogens,and the environment in the laboratory,which are among the key factors for successful *** this article,we aimed to provide ideas for the emergency management of biosafety laboratories,including a discussion on the urgency of the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)related experimental activities,tracking clinical information,taking emergency measures,revision of the risk assessment process,and standardization of personal protective equipment and personnel behavior standards.

关键词： SARS-CoV-2 Biosafety Laboratory Emergency Management

The effects of inactivated SARS-CoV-2 vaccination and subsequent infection of pregnant mice on the behaviors of offspring

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Animal Models and Experimental Medicine 2022年第5期5卷 430-435页

作者： Kaili Lin Meixuan Liu Lu Sun hongwei qiao Shunyi Wang Sidan Pan Hanjun Fu Jingzhu Wang Qiang Wei Hong Gao Institute of Laboratory Animal Science Chinese Academy of Medical Sciences and Comparative Medicine CenterPeking Union Medical CollegeBeijingChina

The mass inoculation of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)vaccines to induce herd immunity is one of the most effective measures we can deploy in the fight against coronavirus disease 2019(COVID-19).Pregnant women are prone to a higher risk of COVID-19,and maternal infection is a risk fac-tor for a range of neurological disorders leading to abnormal behavior in ***,there are limited clinical data to support whether vaccination or infection post-immunization in pregnant women can affect the behavioral cognition of fetuses in *** this study,human angiotensin-converting enzyme 2 pregnant mice(F0 generation)were immunized with CoronaVac and then infected with ***,we analyzed the behavioral cognition of their adult offspring(F1 gen-eration)using the open-field test and Morris water maze *** adult F1 generation did not exhibit any impairments in spontaneous locomotor activity or spatial refer-ence memory.

关键词： offspring spatial reference memory spontaneous locomotor activity

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陶瓷窑变结构温度控制系统的设计

自动化学报 1998年第5期24卷 686-689页

作者：陈作炳乔红伟刘军武汉工业大学机电学院

针对陶瓷明焰窑温度控制中存在的状态能观性、能控性问题，采用模糊控制与时间比例分割控制相结合的控制策略；提出了一种基于系统过程状态的变结构控制方法，并设计出了以这种变结构控制为核心的陶瓷明焰窑温度控制系统；经工业现场的... 详细信息

针对陶瓷明焰窑温度控制中存在的状态能观性、能控性问题，采用模糊控制与时间比例分割控制相结合的控制策略；提出了一种基于系统过程状态的变结构控制方法，并设计出了以这种变结构控制为核心的陶瓷明焰窑温度控制系统；经工业现场的实际应用表明，该方法应用于陶瓷明焰窑温度控制是可行的，系统设计是成功的．

关键词：陶瓷窑变结构控制温度控制系统设计

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核反应堆管道LBB设计关键软件研发

核动力工程 2014年第6期35卷 57-60页

作者：李朋洲乔红威孙磊中国核动力研究设计院成都610041

破前漏(LBB)设计是三代核电技术的重要技术特征之一,但国内直到现在也没有受认可的LBB设计专用程序,开发出受认可的LBB设计程序具有重要意义。简单介绍LBB设计中断裂力学分析、裂纹张开位移分析以及泄漏率计算的技术背景以及我国相关关... 详细信息

破前漏(LBB)设计是三代核电技术的重要技术特征之一,但国内直到现在也没有受认可的LBB设计专用程序,开发出受认可的LBB设计程序具有重要意义。简单介绍LBB设计中断裂力学分析、裂纹张开位移分析以及泄漏率计算的技术背景以及我国相关关键程序的研发。算例验证结果表明,自主开发的程序具有较高的精度,进一步完善和验证后可以应用于实际工程。

关键词： LBB设计软件研发断裂力学分析裂纹张开位移泄漏率计算

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信息不对称下双渠道供应链的定价决策研究

青海交通科技 2021年第4期33卷 13-18页

作者：乔宏伟兰州交通大学交通运输学院兰州730070

研究信息不对称情况下消费者在购物时优先选择网络渠道的现象,构建委托代理模型,得到消费者行为偏好对称与不对称情况下的最优定价策略。首先,依据制造商收益最大化建立信息对称下的委托代理模型,研究最优定价决策。其次,分析了行为偏... 详细信息

研究信息不对称情况下消费者在购物时优先选择网络渠道的现象,构建委托代理模型,得到消费者行为偏好对称与不对称情况下的最优定价策略。首先,依据制造商收益最大化建立信息对称下的委托代理模型,研究最优定价决策。其次,分析了行为偏好信息不对称下制造商和零售商的最优定价决策,求解出精炼贝叶斯定价的存在条件。最后,通过对比分析及数值算例对供应链各方的定价决策进行了分析研究。研究发现,在信息不对称时市场需求总量不变的情况下,制造商的最优批发价格、零售价格和零售商的最优零售价格随消费者的行为偏好度变化而变化。

关键词：双渠道非对称信息定价决策行为偏好委托代理