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Dual function of a high-contrast hydrophobic-hydrophilic coating for enhanced stability of perovskite solar cells in extremely humid environments

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Nano Research 2017年第11期10卷 3885-3895页

作者： Jin sun Yoo Gill sang Han seongha Lee min Cheol kim Mansoo Choi Hyun suk Jung Jung-kun Lee school of Advanced Materials science amp Engineering Sungkyunkwan University Suwon 440-746 Republic of Korea Department of Mechanical Engineering and Materials science University of Pittsburgh Pittsburgh Pennsylvania 15261 USA Department of Mechanical and Aerospace Engineering Seoul National University Seoul 08826 Republic of Korea

In spite of a continuous increase in their power conversion efficiency （PCE） and an economically viable fabrication process,organic-inorganic perovskite solar cells （PsCs） pose a significant problem when used in practical applications：They show fast degradation of the PCE when exposed to very humid *** this study,the stability of PsCs under very humid conditions is greatly enhanced by coating the surface of the PsC devices with a multi-layer film consisting of ultrahydrophobic and relatively hydrophilic layers.A hydrophobic composite of poly（methyl methacrylate）（PMMA）,polyurethane （PU）,and siO2 nanoparticles successfully retards the water molecules from very humid ***,the hydrophilic layer with moderately PMMA captures the residual moisture within the perovskite layer;subsequently,the perovskite layer *** dual function of the coating film keeps the PCE of PsCs at 17.3% for 180 min when exposed to over 95% humidity.

关键词： perovskite solar cell stability surface coating ultrahydrophobic self-recovery

structure and electrochemical properties of La_(1-x)Mg_(x)Ni_(2.8)Co_(0.4)Mn_(0.1)Al_(0.2)(x=0.25,0.30,0.33)hydrogen storage alloys

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Rare Metals 2020年第12期39卷 1464-1468页

作者： si Li Huai-Ying Zhou Zhong-min Wang Jian-Qiu Deng Qing-Rong Yao school of Material science and Engineering Guilin University of Electronic TechnologyGuilin541004China

La_(1-x)Mg_(x)Ni_(2.8)Co_(0.4)Mn_(0.1)Al_(0.2)(x=0.25,0.30,0.33)alloys were prepared by induction melting followed by annealing treatments(1,073 k)for 10 *** structure and electrochemical properties of La_(1-x)Mg_(x)Ni_(2.8)Co_(0.4)Mn_(0.1)Al_(0.2)(x=0.25,0.30,0.33)hydrogen storage alloys were investigated by X-ray powder diffraction(XRD)and electrochemical measurement *** results reveal that all the alloys mainly consist of LaNi5 phase and La2 Ni7 *** electrochemical experiments demonstrate that the substitution of Mg for La can increase the maximum discharge capacity and improve the high-rate dischargeability of the alloy *** high-rate dischargeability of alloy electrodes increases from 39.4%to63.1%with x increasing from 0.25 to 0.33 at discharge current density of 1,500 mA·g^(-1).However,the addition of Mg reduces the cycling stability of the ***,the results obtained from the electrochemical impedance spectroscopy and linear polarization measurements show that the hydriding kinetics on the hydrogen storage alloys are controlled by charge-transfer step.

关键词： Hydrogen storage alloy Electrochemical properties High-rate dischargeability Electrochemical impedance spectroscopy

Geochemical characterization of aromatic hydrocarbons in crude oils from the Tarim,Qaidam and Turpan Basins,NW China

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Petroleum science 2010年第4期7卷 448-457页

作者： Zhang min Paul Philp Department of Geochemistry Yangtze University Jingzhou Hubei 434023 China The key Laboratory of Oil ＆ Gas Resources and Exploration Technology Ministry of Education Yangtze University Jingzhou Hubei 434023 China school of Geology and Geophysics University of Oklahoma Norman OK 73019 USA

Based on the systematic study of aromatic hydrocarbons in over 100 crude oil samples collected from the Tabei and Tazhong uplifts in the Tarim Basin,the western depression area in the Qaidam Basin and the Tabei depression in the Turpan Basin,the geochemical characteristics of the marine（Tarim Basin）,saline lacustrine（Qaidam Basin）,and swamp（Turpan Basin） oils were *** marine oils from the Tarim basin are characterized by relatively low abundance of diaromatic hydrocarbons such as biphenyl and naphthalene,and relatively high abundance of triaromatic hydrocarbons including phenanthrene,dibenzothiophene and *** contrast,the swamp oils from the Turpan Basin are dominated by the highest relative abundance of diaromatic hydrocarbons and the lowest relative abundance of triaromatic hydrocarbons in all the oil samples in this *** relative abundance of diaromatic and triaromatic hydrocarbons in the saline lacustrine oils from Qaidam Basin is between that in Tarim oils and Turpan *** parameters based on the isomer distributions of dimethylnaphthalenes（DMN）,trimethylnaphthalenes（TMN）,tetramethylnaphthalenes（TeMN） and methylphenanthrenes（MP）,i.e.,1,2,5-trimethylnaphthalene（TMN）/1,3,6-TMN ratio,1,2,7-TMN/1,3,7TMN ratio,（2,6-＋2,7-）-dimethylnaphthalenes（DMN）/1,6-DMN ratio,1,3,7-TMN/（1,2,5-＋1,3,7-）TMN,1,3,6,7-TeMN/（1,3,6,7-＋1,2,5,6-＋1,2,3,5-）-TeMN ratio and MP index,may reflect the diversity of organic source input,thermal maturity and depositional *** addition,the dibenzothiophenes（DBTs）/fluorenes（Fs） and dibenzofurans（DBFs）/Fs ratios were found to the very useful and effective in determining genetic types of crude oils for the marine,saline lacustrine,and swamp depositional environments,and for oil-oil correlations.

关键词： China Tarim Basin Qaidam Basin Turpan Basin marine oil saline lacustrine oil coal-derived oil depositional environment aromatic hydrocarbons

Glycyrrhizic acid promotes sciatic nerves recovery in type 1 diabetic rats and protects schwann cells from high glucose-induced cytotoxicity

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The Journal of Biomedical Research 2022年第3期36卷 181-194,I0003,I0004页

作者： min shi Xiangcheng Zhang Ridong Zhang Hong Zhang Dalong Zhu Xiao Han key Laboratory of Human Functional Genomics of Jiangsu Province Department of Biochemistry and Molecular BiologyNanjing Medical UniversityNanjingJiangsu 211166China Department of Endocrinology Nanjing Drum Tower Hospital Clinical College of Nanjing Medical UniversityNanjingJiangsu 210008China Department of Endocrinology the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical UniversityHuai'anJiangsu 223300China Department of Intensive Care Unit the Affiliated Huai'an No.1 People's Hospital of Nanjing Medical UniversityHuai'anJiangsu 223300China

The present study aims to investigate the therapeutic effect and mechanism of glycyrrhizic acid(GA)in diabetic peripheral neuropathy(DPN).GA significantly mitigated nerve conduction velocity(NCV)deficit and morphological abnormality and reduced high-mobility group box-1(HMGB1)expression in the sciatic nerves of diabetic rats independent of blood glucose and body ***,GA alleviated the increase of HMGB1 and the decrease of cell viability in high glucose-stimulated RsC96 ***,GA obviously reduced the concentration of inflammatory cytokines in the sciatic nerves of diabetic rats and supernatants of high glucose-exposed RsC96 cells,then restored the decreased expression levels of nerve growth factor(NGF)and neuritin-1,and the increased expression levels of cleaved caspase-3 and neuron-specific ***,GA markedly inhibited receptor for advanced glycation end products(RAGE)expression,p38MAPk phosphorylation,and the nuclear translocation of NF-κBp65 in diabetic rats and high glucose-exposed RsC96 *** promotional effect of high glucose in RsC96 cells was diminished following Hmgb1 siRNA *** findings indicate that GA may exert neuroprotection on DPN by suppressing HMGB1,which lead to extenuation of inflammation response,balance of NGF,neuritin-1 and caspase-3,as well as inactivation of RAGE/p38MAPk/NF-κBp65 signaling pathway.

关键词： diabetic peripheral neuropathy glycyrrhizic acid high-mobility group box-1 inflammation

Pathologic etiology and predictors of malignancy in children with cervical lymphadenopathy

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World Journal of Pediatrics 2023年第3期19卷 283-287页

作者： Jee Woo kim Jee Yeon Baek Ji Young Lee sung min Lim Ji-Man kang Won kee Ahn seung min Hahn Jung Woo Han Chuh Joo Lyu Jong Gyun Ahn Department of Pediatrics Severance Children's HospitalYonsei University College of Medicine50-1 Yonsei-RoSeodaemun-guSeoul 03722South Korea Institute for Immunology and Immunological Diseases Yonsei University College of MedicineSeoulSouth Korea Division of Pediatric Hematology and Oncology Department of PediatricsYonsei University College of MedicineYonsei University Health SystemSeoulSouth Korea Department of Pediatric Hemato-Oncology Yonsei Cancer CenterYonsei University Health SystemSeoulSouth Korea

Cervical lymphadenopathy in children is a common disease entity that is accompanied by a variety of processes,ranging from benign disease to *** the cause of cer-vical lymphadenopathy in children is often benign[1-4],the presence of enlarged lymph nodes can cause anxiety to parents because of its association with *** should be considered for the histologic diagnosis of persistent or unex-plained cervical lymphadenopathy in ***,biopsy is an invasive examination method,and it is difficult to clinically determine whether biopsy is needed in children with unexplained cervical ***,clini-cians should be aware of the differential diagnosis of lymph node enlargement in children and should identify situations in which malignancy may be *** this study,we aimed to identify the etiology of pediatric cervical lymphadenopathy using biopsy and to analyze the risk factors associated with malignancy in children with cervical lymphadenopathy.

关键词： malignancy cervical diagnosis

Development of Comment Correlation Matrix for Mobile Application Recommendation

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Journal of Electronic science and Technology 2016年第3期14卷 268-274页

作者： Yi-Lun Chi Yu-Fan Ho Iuon-Chang Lin min-shiang Hwang Department of Marketing and supply Chain Management Overseas Chinese UniversityTaichung Department of Management Information systems National Chung Hsing UniversityTaiehung the Department of Photonics and Communication Engineering Asia UniversityTaiehung Department of Computer science and Information Engineering Asia UniversityTaichung

As the evolution of mobile technology, mobile devices have become an essential tool in people＇s daily life. Moreover, with the rapid growth of Internet and mobile networks, people can easily access various services provided by mobile platforms. Many services can be executed on the mobile devices with various mobile applications launched to mobile platforms. People can choose what they like to install in their mobile devices and hence make their life more convenient, entertaining, and productive. However, there are too many mobile applications for users to choose. The goal of this research is to propose a methodology which can recommend top-N lists for mobile applications. A comment correlation matrix is proposed. Furthermore, a recommendation algorithm for mobile applications based on user comments and key attributes is built. With the proposed method, it outperforms Google play and is closer to user real feelings.

关键词： Comment correlation matrix mobile applications recommendation system user comment.

Graph-based method for human-object interactions detection

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Journal of Central south University 2021年第1期28卷 205-218页

作者： XIA Li-min WU Wei school of Automation Central South UniversityChangsha 410075China

Human-object interaction(HOIs)detection is a new branch of visual relationship detection,which plays an important role in the field of image *** of the complexity and diversity of image content,the detection of HOIs is still an onerous *** most of the current works for HOIs detection which only rely on the pairwise information of a human and an object,we propose a graph-based HOIs detection method that models context and global structure ***,to better utilize the relations between humans and objects,the detected humans and objects are regarded as nodes to construct a fully connected undirected graph,and the graph is pruned to obtain an HOI graph that only preserving the edges connecting human and object ***,in order to obtain more robust features of human and object nodes,two different attention-based feature extraction networks are proposed,which model global and local contexts ***,the graph attention network is introduced to pass messages between different nodes in the HOI graph iteratively,and detect the potential *** on V-COCO and HICO-DET datasets verify the effectiveness of the proposed method,and show that it is superior to many existing methods.

关键词： human-object interactions visual relationship context information graph attention network

Investigation in Determining the Relative Position between stator and Rotor of a PMsM in Electromagnetic Field Calculation

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Frontiers of Electrical and Electronic Engineering in China 2006年第1期1卷 67-71页

作者： LIU Rui-fang YAN Deng-jun HU min-qiang school of Electrical Engineering Beijing Jiaotong UniversityBeijing 100044China College of Electrical Engineering Hehai UniversityNanjing 210098China Department of Electrical Engineering Southeast UniversityNanjing 210096China

When designing a universal finite element software for analyzing a permanent magnet synchronous motor,the relative position of the stator and rotor remains ***,determining the relative position is a precondition for electromagnetic field *** analyzing the basic relationship of variables in a synchronous machine,the characteristics of an air-gap-resultant electromotive force and an inner power angle under a special inner power factor angle are obtained.A method similar to inverse problem solving is proposed.A series of electromagnetic field calculation under different armature current initial phase angles are carried out,and through searching the field of a special inner power factor angle,the relative position of the rotor and the stator can be determined subsequently.

关键词： permanent magnet synchronous motor(PMsM) finite element method(FEM) relative position of stator and rotor

具有死区输入的分数阶混沌系统的有限时间同步（英文）

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控制理论与应用 2015年第9期32卷 1240-1245页

作者：田小敏费树岷柴琳东南大学自动化学院复杂系统测量与控制教育部重点实验室江苏南京210096

本文提出一种新型分数阶滑模控制方案来实现两个不同分数阶混沌系统的有限时间同步.首先,根据实际情况,在研究系统同步过程中,充分考虑死区非线性输入、参数不确定性、模型不确定性以及外界扰动对系统的影响,然后,采用Lyapunov稳定理论... 详细信息

本文提出一种新型分数阶滑模控制方案来实现两个不同分数阶混沌系统的有限时间同步.首先,根据实际情况,在研究系统同步过程中,充分考虑死区非线性输入、参数不确定性、模型不确定性以及外界扰动对系统的影响,然后,采用Lyapunov稳定理论证明滑模阶段和趋近阶段均是有限时间收敛的,最后,给出一个仿真实例充分验证本文所提出控制策略的有效性和可行性.

关键词：有限时间同步不确定分数阶混沌系统滑模控制 Lyapunov稳定理论