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Enhanced photoluminescence and stability of ZnSe microspheres/Cs4PbBr6 microcrystals/CsPbBr3 nanocrystals composites

今日中国（西班牙文版） 2025年第2期 61页

作者： pu JlE

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Chinese Chemical Letters 2020年第9期31卷 2499-2502页

作者： Chao Zhang Tingting Li Lei pu Weijia wen Xiangdong Luo Lijuan Zhao Materials Genome Institute Shanghai UniversityShanghai 200444China jiangsu Key Laboratory of ASIC Design Nantong UniversityNantong 226019China State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China

A ternary complex combining dual-phase perovskites-Cs4PbBr6/CsPbBr3(DP-CPB) with ZnSe micropshere s(ZnSe-DP-CPB) was succes s fully prepared using supersaturated recrystallization technique at room *** was showed that the DP-CPB composites were partially embedded in ZnSe microsphere composed with ZnSe *** light absorption range of ZnSe-DP-CPB composites was extended from visible to near infrared *** enhanced luminescence from ZnSe-DP-CPB composite was observed and the excitation power-dependent photoluminescence showed that the recombination involves *** recombination lifetimes of the ternary composites increased compared with DP-CPB composite,indicating that the non-radiative combination was suppressed which maybe possibly due to the decrease of both bulk and surface defects,owing to the passivation of ZnSe,as well as the suitable band alignments of these three *** ternary complex also showed improved stability of photoluminescence(PL),which opens a newavenue for enhancing the stability of PL and optoelectronic applications for semiconductor-perovskite composites.

关键词： Dual-phase perovskites Ternary complex Supersaturated recrystallization Photoluminescence Passivation Optoelectronic

基于声光联合试验的预制双裂隙砂岩损伤演化特征研究

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岩石力学与工程学报 2025年第1期44卷 30-42页

作者：陈结孟历德仁崔义蒲源源陈紫阳重庆大学资源与安全学院重庆400044 重庆大学煤矿灾害动力学与控制全国重点实验室重庆400044 扎赉诺尔煤业有限责任公司内蒙古呼伦贝尔021410

为了研究岩桥长度和含水情况对砂岩力学特性及损伤演化规律的影响,开展干燥及饱和2种情况下不同岩桥长度含预制双裂隙砂岩单轴压缩试验,通过声发射(AE)和数字图像相关技术(DIC)实时监测砂岩内部损伤及表面裂纹扩展情况。结果表明:裂隙... 详细信息

为了研究岩桥长度和含水情况对砂岩力学特性及损伤演化规律的影响,开展干燥及饱和2种情况下不同岩桥长度含预制双裂隙砂岩单轴压缩试验,通过声发射(AE)和数字图像相关技术(DIC)实时监测砂岩内部损伤及表面裂纹扩展情况。结果表明:裂隙试件的强度低于完整试件,且岩桥长度越长,试件的单轴抗压强度越大,饱水试件强度低于干燥试件。裂隙试件会在破坏过程中出现应力降,并与AE计数峰值现象对应,岩桥长度增加使第一应力降逐渐向应力峰值靠近,饱水试件的AE计数变化规律与干燥试件一致。饱水试件和干燥试件的AE定位事件和DIC应变异常区域率先集中在岩桥部位,并沿预制裂隙逐渐向试件边界发育。研究结果有助于富水条件下围岩失稳破坏的监测及预警。

关键词：岩石力学岩桥裂纹演化声发射数字图像相关技术

Tri-level programming model for combined urban traffic signal control and traffic flow guidance

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Journal of Central South University 2016年第9期23卷 2443-2452页

作者： SUN Zhi-yuan LU Hua-pu QU wen-cong Institute of Transportation Engineering Tsinghua University Beijing 100084 China College of Metropolitan Transportation Beijing University of Technology Beijing 100124 China

In order to balance the temporal-spatial distribution of urban traffic flow, a model is established for combined urban traffic signal control and traffic flow guidance. With consideration of the wide use of fixed signal control at intersections, traffic assignment under traffic flow guidance, and dynamic characteristics of urban traffic management, a tri-level programming model is presented. To reflect the impact of intersection delay on traffic assignment, the lower level model is set as a modified user equilibrium model. The middle level model, which contains several definitional constraints for different phase modes, is built for the traffic signal control optimization. To solve the problem of tide lane management, the upper level model is built up based on nonlinear 0-1 integer programming. A heuristic iterative optimization algorithm(HIOA) is set up to solve the tri-level programming model. The lower level model is solved by method of successive averages(MSA), the middle level model is solved by non-dominated sorting genetic algorithm II(NSGA II), and the upper level model is solved by genetic algorithm(GA). A case study is raised to show the efficiency and applicability of the proposed modelling and computing method.

关键词： traffic engineering traffic signal control traffic flow guidance tri-level programming model

Hot Dust Acoustic Solitary Waves in Dust Plasma with Variable Dust Charge

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Chinese Physics Letters 2001年第8期18卷 1088-1089页

作者： DUAN wen-Shan LÜ Ke-pu ZHAO Jin-Bao Department of Physics Northwest Normal UniversityLanzhou 730070

Considering the variation of dust charges,We have analytically studied the governing equation for the system with the same model as that for cold dust acoustic waves in a demagnetized plasma but the contribution of hot *** result indicates that the governing equation is also a Korteweg-de Vries equaiton,although its amplitude and width will be smaller compared with the cold dust case.

关键词： equation governing charges

Synthesis, Crystal Structure and Biological Evaluation of 6'-Chloro-4'-methylene-3H-spiro[isobenzofuran-1,3'-isochroman]

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Chinese Journal of Structural Chemistry 2019年第1期38卷 89-94,3页

作者： pu Xiu-Ying XU wen-Jun YI Yun-Peng LI Hao-wen LIANG Jian-Ping HAO Bao-Cheng School of Life Science and Engineering Lanzhou University of Technology Key Laboratory of New Animal Drug Project of Gansu Province Key Laboratory of Veterinary Pharmaceutical Development Ministry of AgricultureInstitute of Husbandry and Pharmaceutical Sciences of CAAS

The title compound 6?-chloro-4?-methylene-3 H-spiro [isoben zofura-1,3?-isochroman], C_(17)H_(13)ClO_2, was prepared and characterized by IR, NMR, HRMS and single-crystal X-ray diffraction. This compound has a bisbenzannulated [5,5]-spiroketals skeleton. It crystallizes in orthorhombic, space group P212121 with a = 13.383(3), b = 7.6120(17), c = 13.793(3) ?, Z = 4, Dc= 1.275 g/cm^3, μ = 0.28 mm^(–1), F(000) = 592, wR = 0.1443 and R = 0.0557. The preliminary biological test showed that the title compound has good anti-bacterial activities in vitro.

关键词： 3H-spiro[isobenzofura-1,3'-isochroman] single-crystal structure anti-bacterial

协同共育时代新人:家校合作的“边界”“失界”与“立界”

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中国教育学刊 2025年第1期 37-44页

作者：蒲蕊屠雨婷常波华中师范大学教育学院湖北武汉430079 华中师范大学中国教育管理研究中心湖北武汉430079 空军航空大学吉林长春130021

培育德智体美劳全面发展的时代新人、落实立德树人根本任务,需要家校双方的共同努力和有效合作。为了实现协同育人目标,合作中的家庭与学校要有相对明晰的权责边界,并从组织功能维度和法律维度出发确立双方的权责边界。现阶段家校合作... 详细信息

培育德智体美劳全面发展的时代新人、落实立德树人根本任务,需要家校双方的共同努力和有效合作。为了实现协同育人目标,合作中的家庭与学校要有相对明晰的权责边界,并从组织功能维度和法律维度出发确立双方的权责边界。现阶段家校合作存在着“缺位”与“越位”双重“失界”困境,其根源既有合作双方在权责认知上的偏差,亦有育人目标上的分歧以及在合作能力上的不足。化解家校合作的失界困境、重建家校合作应有边界的主要策略应包括:建立家校合作“共生利他”愿景理念,明晰家校合作权责边界,完善家校合作沟通协商机制,提升家校合作共育能力。

关键词：家校合作协同共育权责边界 “失界” “立界”

Formal modelling of list based dynamic memory allocators

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Science China(Information Sciences) 2018年第12期61卷 81-96页

作者： Bin FANG Mihaela SIGHIREANU Geguang pu wen SU Jean-Raymond ABRIAL Mengfei YANG Lei QIAO Shanghai Key Laboratory of Trustworthy Computing East China Normal University IRIF University Paris Diderot and CNRS School of Computer Engineering and Science Shanghai University

Existing implementations of dynamic memory allocators(DMA) employ a large spectrum of policies and techniques. The formal specifications of these techniques are quite complicated in isolation and very complex when combined. Therefore, the formal reasoning on a specific DMA implementation is difficult for automatic tools and mostly single-use. This paper proposes a solution to this problem by providing formal models for a full class of DMA, the class using various kinds of lists to manage the memory blocks controlled by the DMA. To obtain reusable formal models and tractable formal reasoning, we organise these models in a hierarchy ranked by refinement relations. We prove the soundness of models and the refinement relations using the modeling framework Event-B and the theorem prover Rodin. We demonstrate that our hierarchy is a basis for an algorithm theory for list based DMA: it abstracts various existing implementations of DMA and leads to new DMA implementations. The applications of this formalisation include model-based code generation, testing, and static analysis.

关键词： dynamic memory allocators formal methods refinement Event-B Rodin model-based design

Association of candidate gene polymorphisms with diabetic retinopathy in Chinese patients with type 2 diabetes

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International Journal of Ophthalmology(English edition) 2020年第2期13卷 301-308页

作者： wen-Ying Fan Hong Gu Xiu-Fen Yang Chong-Yang She Xi-pu Liu Ning-pu Liu Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical UniversityBeijing Ophthalmology and Visual Sciences Key LaboratoryBeijing 100730China Department of Ophthalmology Lihuili HospitalNingbo 315010Zhejiang ProvinceChina Department of Ophthalmology Friendship HospitalCapital Medical UniversityBeijing 100050China Department of Ophthalmology Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Sekwa Eye Hospital Sekwa Institute of MedicineBeijing 100035China

●AIM:To investigate the association between a set of six candidate genes and the risk of diabetic retinopathy(DR)in an urban community cohort of Chinese patients with type 2 diabetes mellitus(T2 DM).●METHODS:A population-based cross-sectional *** diabetic subjects were recruited from an urban community in Beijing and categorized into groups of proliferative diabetic retinopathy(PDR),non-proliferative diabetic retinopathy(NPDR),or diabetic without any retinopathy(DWR)based on the fundus photography and duration of *** candidate genes,including advanced glycation end product specific receptor(AGER),aldose reductase(AKR1 B1),inducible nitric oxide synthase(i NOS),pigment epithelium derived factor(PEDF),tumor necrosis factor-alpha(TNF-α),and paraoxonase 1(PON1),were chosen based on Meta-analysis of genetic association studies for DR and biochemical pathways implicated in DR *** allele and genotype distribution of 21 functional singlenucleotide polymorphisms(SNPs)in those 6 candidate genes were investigated using MassARRAY genotyping system.●RESULTS:Among 1461 diabetic patients recruited from community,569 were selected in following genotyping analysis,including 97 patients with PDR,217 with NPDR,and 255 with *** the promoter variant rs1051993 in AGER gene,the distribution of allele and genotype in PDR group differed from that in DWR group(allele:P=0.011;genotype:P=0.01).Compared with DWR,patients with PDR had lower frequencies of heterozygous genotype GT(9.8%for DWR,1%for PDR,OR:0.10,95%CI:0.01-0.72)and minor allele T(4.9%for DWR,0.5%for PDR,OR:0.10,95%CI:0.01-0.75).In multivariate model,the distribution of genotype for rs1051993 in PDR group was significantly different from that in DWR group(GT vs GG:OR:0.07,95%CI:0.01-0.61,P<0.001).No association with DR was observed in other genotyped SNPs.●CONCLUSION:The data suggest a significant association of the promoter variant rs1051993 in AGER gene with PDR in Chinese cohort with T2DM.

关键词： polymorphisms diabetic retinopathy AGER AKR1B1 iNOS PEDF TNF-α PON1

Constitutive Modeling for Flow Behaviors of Superaustenitic Stainless Steel S32654 during Hot Deformation

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Journal of Iron and Steel Research International 2016年第2期23卷 178-184页

作者： En-xiang pu Han FENG Min LIU wen-jie ZHENG Han DONG Zhi-gang SONG Central Iron and Steel Research Institute Beijing 100081China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

Hot deformation behavior of superaustenitic stainless steel S32654 was investigated with hot compression tests at temperatures of 950-1250 C and strain rates of 0. 001-10 s-1. Above 1150 ℃, with strain rate lower than 0.1 s -1 , the flow curves exhibit nearly steady state behavior, while at higher strain rate, continuous flow softening occurs. To provide a precise prediction of flow behavior for the alloy, the constitutive modeling considering effect of strain was derived on the basis of the obtained experimental data and constitutive relationship which incorporated Ar- rhenius term and hyperbolic sine type equation. The material constants α, n, Q and lnA are found to be functions of the strain and can be fitted employing eighth-order polynomial. The developed constitutive model can be employed to describe the deformation behavior of superaustenitic stainless steel S32654.

关键词： S32654 superaustenitic stainless steel hot deformation constitutive modeling