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Recent advances in controlling the crystallization of two-dimensional perovskites for optoelectronic device

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Frontiers of physics 2019年第5期14卷 1-17页

作者： shi-Qiang Luo Ji-Fei Wang Bin Yang yong-bo Yuan Hunan Key Laboratory of Super Micro structure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China College of Physic and Electric Information Hunan Institute of Science and TechenologyYueyang 414006China College of Materials Science and Engineering Hunan UniversityChangsha 410082China Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan UniversityChangsha 410082China

Though three-dimensional (3D) organic inorganic halide perovskites (OIHP) is very promising for low cost and distributed PV generation,the stability issue of 3D OIHP is still a problem for its ***-dimensional (2D) perovskites,protected by periodic organic ligands,is promising due to its excellent optoelectronic property and superior ***,2D perovskitc is anisotropic in its crystal structure and optoelectronic properties,and the resulted film is often a mixture of different ***,methods to manipulate 2D perovskitc crystal orientation and its phase separation are *** this review,the major advances on the composition engineering,crystal orientation,phase separa-tion,and inlerfaeial capping are ***,efforts on understanding the formation process of 2D perovskitc crystal arc also discussed,which is important for making full use of 2D perovskitc in functional optoelectronic devices.

关键词： optoelectronic devices perovskite solar cells nanoscale materials chemical vapor deposition

Comprehensive impact of as-cast microstructure and ordered structures on formability of large-scale Fe-6.5 wt.%Si alloy ingots

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Journal of Iron and Steel Research International 2020年第2期27卷 180-187页

作者： Xiang-ju shi yong-feng Liang shi-bo Wen Zhi-yi Ding Bao Zhang Wei Song Feng Ye State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Large-scale Fe-6.5 wt.%Si ingot with excellent formability is required for a pilot line producing sheets through hot/cold *** variation of the as-cast microstructure,ordered structures and the formability of the Fe-6.5 wt.%Si alloy ingots with the cooling rate during casting was *** air-cooling condition,inhomogeneous microstructures with a low proportion of equiaxed grains were formed,but the formation of ordered structures was partially inhibited,especially *** microstructures with a high proportion of equiaxed grains were observed under the condition of furnace cooling,but the ordered structures were fully generated,and the degree of order is *** is generally believed that high degree of order is the main factor of brittleness,but the homogeneous microstructure(including grain morphology and size)of the furnace-cooled sample helps to improve the *** influence of these two aspects on formability is ***,the formability is tested through the flow stress during the compression and the microstructure after the *** results show that the furnace-cooled sample has better *** large-scale ingots,the control of as-cast microstructure becomes more significant than the control of degree of *** cooling during casting is important for the large-scale ingots to have good formability meeting the requirements of direct hot rolling.

关键词： Large-scale ingot Fe-6.5 wt.%Si alloy Cooling method Formability Ordered structure As-cast microstructure

Simulation research on the energy dissipation and shock absorption performance of a swing column device based on fuzzy control

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Earthquake Engineering and Engineering Vibration 2022年第4期21卷 987-998页

作者： Zheng yong Yuan bo Research Center of Space Structures Guizhou UniversityGuiyang 550004China College of Civil Engineering Guizhou UniversityGuiyang 550004China Key Laboratory of Structural Engineering of Guizhou Province Guiyang 550025China

Double-column bridge piers are prone to local damage during earthquakes,leading to the destruction of *** improve the earthquake resistance of double-column bridge piers,a novel swing column device(SCD),consisting of a magnetorheological(MR)damper,a current controller,and a swing column,was designed for the present *** verify the seismic energy dissipation ability of the SCD,a lumped mass model for a double-column bridge pier with the SCD was established according to the low-order modeling method proposed by ***,the motion equation of the double-column bridge pier with the SCD was established based on the D′Alembert principle and solved with the use of computational *** was found that the displacement response of the double-column bridge pier was effectively controlled by the ***,due to rough current selection and a time delay,there is a significant overshoot of the bridge acceleration using ***,to solve the overshoot phenomenon,a current controller was designed based on fuzzy logic *** was found that the SCD design based on fuzzy control provided an ideal shock absorption effect,while reducing the displacement and acceleration of the bridge pier by 36.43%‒40.63%and 30.06%‒33.6%,respectively.

关键词： swing column device double-column bridge pier fuzzy control MR damper structural control low-element modeling method

Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： shi-bo Feng Hai-Hui Jiang Hui-Li Kang Yi Jiang Hua-Wei Zhang Xiao-Mei Song Yu-Ze Li Wen-Li Huang Dong-Dong Zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

伴轻度抑郁症状的双相障碍患者执行和注意功能对照研究

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临床精神医学杂志 2016年第6期26卷 397-398页

作者：肖春兰介勇史泊海王萍汪作为上海市虹口区精神卫生中心 200083

目的：探讨伴轻度抑郁症状的双相障碍患者执行功能、注意功能与健康对照者的差异。方法：40例伴轻度抑郁症状的双相障碍患者（研究组）和40名年龄、性别、受教育年限与研究组匹配的健康者（健康对照组）均采用威斯康星卡片分类测验（WCS... 详细信息

目的：探讨伴轻度抑郁症状的双相障碍患者执行功能、注意功能与健康对照者的差异。方法：40例伴轻度抑郁症状的双相障碍患者（研究组）和40名年龄、性别、受教育年限与研究组匹配的健康者（健康对照组）均采用威斯康星卡片分类测验（WCST）及持续操作测验（CPT）测试两组执行功能和注意功能。结果：两组WCST测试成绩除完成第1个分类所需应答数、非持续性错误数差异无统计学意义（P〉0.05）外,完成分类数、总应答数、正确应答数、错误应答数、持续性错误数、持续性错误率组间差异有统计学意义（t=-6.10-5.96,P均=0.000）;CPT测验中正确数研究组明显低于健康对照组（t=-3.87,P=0.000）;错误数明显高于健康对照组（t=5.21,P=0.000）。结论：伴轻度抑郁症状的双相障碍患者存在执行功能损害和注意功能损害。

关键词：轻度抑郁双相障碍执行功能注意功能

Microstructure stability of γ’+β Ni-Al coated single-crystal superalloy N5 annealed at 1100℃

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Rare Metals 2021年第3期40卷 693-700页

作者： Jing-yong Sun Liang-Liang Wei Qiu-shi Li Sheng-Kai Gong Hong-bo Guo School of Energy and Power Engineering Beihang UniversityBeijing 100191China School of Materials Science and Engineering Beihang UniversityBeijing 100191China Key Laboratory of High-Temperature Structural Materials and Coatings Technology Ministry of Industry and Information TechnologyBeijing 100191China

γ’+β Binary-phase Ni-Al coatings were prepared on second-generation single-crystal superalloy Rene N5(N5) substrates by electron beam physical vapor ***-diffusion behavior between coatings and substrates at 1100℃ and its effects on microstructure stability of the substrates were investigated.A 3-μm-thick substrate diffusion zone(SDZ) layer forms beneath the coating/substrate interface after 5-h heat *** SDZ layer is composed of γ’-Ni_(3) Al phases and needle-like precipitates growing along(100)(110) or(100) ***100-h annealing,the thickness of the SDZ layer increases to~17 μm,much lower than that of the single β-NiAl-coated substrate,while keeping single-crystal microstructure.

关键词： Ni-Al coating EB-PVD Single-crystal superalloy Inter-diffusion Microstructure stability

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双壁波纹钢管混凝土构件短柱轴压力学性能

哈尔滨工业大学学报 2025年第1期57卷 56-64页

作者：路博崔燕方勇王玉银李豪哈尔滨工业大学土木工程学院哈尔滨150090 结构工程灾变与控制教育部重点实验室(哈尔滨工业大学) 哈尔滨150090 深圳市市政设计研究院有限公司广东深圳518029

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式... 详细信息

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式,对比不同参数下构件的承载力、峰值应变、延性系数等关键力学指标,获得荷载-波纹钢管应变关系曲线以揭示试件的约束机理并验证外波纹钢管类型的影响。试验结果表明:外波纹钢管可为夹层混凝土提供约束作用,且螺旋角越小,外波纹钢管的约束作用越强;内波纹钢管则主要为夹层混凝土内壁提供有效支撑,以保持截面的完整性。名义约束效应系数与空心率相近时,由于咬口滑移影响,大螺旋角双壁波纹钢管混凝土比小螺旋角双壁波纹钢管混凝土的峰值应力、峰值应变与延性系数分别降低15.5%、21.8%与16.7%。在总用钢量相近的情况下,小螺旋角双壁波纹钢管混凝土柱的承载力、峰值应变与延性系数分别比空心钢筋混凝土柱提高10.6%、36.2%与50.0%。基于试验结果,检验了3种典型承载力公式的适用性,并提出了相应设计建议。

关键词：组合结构空心钢筋混凝土波纹钢管双壁构件约束机理

Set Stability of Probabilistic Time-Delay boolean Networks with Impulsive Effect

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Journal of Systems Science & Complexity 2021年第6期34卷 2182-2194页

作者： shi Shengnan XU yong School of Economics and Management Hebei University of TechnologyTianjin 300401China School of Science Hebei University of TechnologyTianjin 300401China

This paper investigates the set stability of probabilistic time-delay boolean networks(PTDBN)with impulsive ***,using the algebraic state space representation,an equivalent stochastic system is established for PTDBN with impulsive ***,based on the probabilistic state transition matrix,a necessary and sufficient condition is presented for the set stability of PTDBN with impulsive ***,the obtained new result is applied to the networked evolutionary game with memories.

关键词： boolean networks impulsive effect networked evolutionary game set stability

Homological Dimensions of the Extension Algebras of Monomial Algebras

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Acta Mathematica Sinica,English Series 2015年第4期31卷 675-694页

作者： Hong bo shi Department of Mathematics Nanjing University of Finance and Economics

The main objective of this paper is to study the dimension trees and further the homological dimensions of the extension algebras -- dual and trivially twisted extensions -- with a unified combinatorial approach using the two combinatorial algorithms -- Topdown and bottomup. We first present a more complete and clearer picture of a dimension tree, with which we are then able, on the one hand, to sharpen some results obtained before and furthermore reveal a few more hidden subtle homological phenomenons of or connections between the involved algebras; on the other hand, to provide two more efficient combinatorial algorithms for computing dimension trees, and consequently the homological dimensions as an application. We believe that the more refined complete structural information on dimension trees will be useful to study other homological properties of this class of extension algebras.

关键词： Topdown bottomup dimension tree syzygy finitistic dimensions