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Pure aromatic hydrocarbons with meta-linked phenyl-core and perihedral fluorene substitutions with/without inert groups of tert-butyl： bipolar hosts for blue phosphorescence

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Science China Chemistry 2017年第2期60卷 223-230页

作者： Gaowen Liu chuanjun wang Baoxiu Mi Minjie Zhuo Changjin Ou Jie wang Shuchao Zheng Juan Song Zhiqiang Gao Dapeng Cao Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) Nanjing University of Posts & Telecommunications Nanjing 210023 China. School of Material Science and Engineering Jiangsu Engineering Centre for Flat-Panel Displays & Solid-state Lighting Nanjing University of Posts &Telecommunications Nanjing 210023 China

Two pure hydrocarbon molecules of l,3,5-tris(9-phenyl-9H-fluoren-9-yl)benzene(mTPFB)and l,3,5-tris(2-tert-butyl-9-phenyl-9H-fluoren-9-yl)benzene(tBu-mTPFB)were *** to the conjugation blocked connection mode and rigid/bulky substitutions,these two materials possess high triplet energy,enabling them as good hosts for blue phosphor in *** studying their thermal,electrochemical,electronic absorption and photoluminescent properties,it was found that the influence of the inert tert-butyl group on material photoelectrical properties is *** instance,mTPFB and tBu-mTPFB showed very similar absorption and emission profiles,with almost the same bandgap,triplet energy and energy ***,the encapsulation of tert-butyl on the 2-position of 9-phenylfluorene enhanced material thermal *** importantly,carrier transport properties were improved dramatically,as proved by the mono carrier *** phosphorescent OLEDs hosted by tBu-mTPFB showed external quantum efficiency of 15.2%and current efficiency of 23.0 cd/A,which were much higher than that of the OLEDs based on mTPFB with the analogous structure.

关键词： pure aromatic hydrocarbon bipolar host thermal stability carrier transport properties tert-butyl moiety

A Bipolar and Small Singlet-Triplet Splitting Energy Host with Triplet Energy Lower Than a Blue Phosphor for Phosphorescent OLEDs in Panchromatic Range

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Chinese Journal of Chemistry 2016年第8期34卷 763-770页

作者： chuanjun wang Gaowen Liu Shaojie Liu Xunlu Zhang Changjin Ou Lu wang Wei Sun Baoxiu Mi Juan Song Zhiqiang Gao Key Laboratory for Organic Electronics & Information Displays (KLOEID) Jiangsu Engineering Centre for Plate Displays & Solid State Lighting and Institute of Advanced Materials (IAM) School of Material Science and Engineering Nanjing University of Posts & Telecommunications Nanjing Jiangsu 210023 China Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials ( SICA M) Nanjing Tech University Nanjing Jiangsu 211816 China

A bipolar host material, 2,4,6‐tris(3‐(carbazol‐9‐yl)phenyl)‐triazine (TCPZ), was synthesized according to reported method. Due to the higher triplet energy compared to green and red phosphors, TCPZ is suitable to host them in phosphorescent organic light‐emitting diodes (PhOLEDs). Although the triplet of TCPZ is slightly lower than a common blue phosphor, good blue PhOLEDs using TCPZ as the host were successfully demonstrated in this work. By low temperature emission measurement, it was found that the energy splitting between the singlet and triplet of TCPZ is as small as 0.24 eV. Therefore, thermal activated energy transfer from triplet to singlet in the host TCPZ is expected to occur, which can be afterwards efficiently transferred to the blue phosphor, hence enabling it to host blue phosphor. As a result, TCPZ can be used as host for phosphors in panchromatic range. Additionally, single‐carrier devices clearly prove its good bipolar transport feature, beneficial to device performance. By using TCPZ as a host, high performance deep‐red, green and blue PhOLEDs have been achieved, with maximum efficiencies of 9.3 cd·A −1 (13.2%), 81.3 cd·A −1 (23.1%) and 17.03 cd·A −1 (10.4%), respectively.

关键词： panchromatic host material bipolar small singlet‐triplet splitting large emission overlap

Improved data-driven performance of Charpy impact toughness via literature-assisted production data in pipeline steel

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Science China(Technological Sciences) 2023年第7期66卷 2069-2079页

作者： SHANG ChunLei wang chuanjun WU HongHui LIU WenYue CHEN YiMian PAN GuangFei wang ShuiZe WU GuiLin GAO JunHeng ZHAO HaiTao ZHANG ChaoLei MAO XinPing Beijing Advanced Innovation Center for Materials Genome Engineering Innovation Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Metal Materials for Marine Equipment and Application Anshan 114009China Ansteel Beijing Research Institute Co.Ltd. Beijing 102200China

Pipeline transportation is one of the most economical ways to transport crude oil and natural gas over long *** toughness is one of the important qualities of pipeline steel to ensure safe transportation,wherein a key factor characterizing toughness is Charpy impact toughness(CIT).In this work,according to the production line data provided by a steel mill and the experimental data collected in literature,two machine learning model construction strategies were *** was based solely on the production line dataset,and the other was based on the production line dataset together with the literature *** these two strategies,the random forest model displayed the best prediction results,the accuracy of strategy I was 0.58,and the accuracy of strategy II was 0.90,wherein literature data effectively improved the CIT prediction ***,an optimized CIT model based on machine learning algorithms was *** proposed strategy of literature data-assisted production line data provides a new perspective for optimizing and predicting the performance of traditional structural materials.

关键词： data-driven design pipeline steel Charpy impact toughness machine learning

A CPK-Based Identity Authentication Scheme for IoT

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Computer Systems Science & Engineering 2022年第3期40卷 1217-1231页

作者： Mingming Zhang Jiaming Mao Yuanyuan Ma Liangjie Xu chuanjun wang Ran Zhao Zhihao Li Lu Chen Wenbing Zhao State Grid Jiangsu Electric Power Co. Ltd.Information&Telecommunication BranchNanjing210008China State Grid Key Laboratory of Information&Network Security Institute of Information and CommunicationGlobal Energy Interconnection Research InstituteNanjing210003China Anhui Jiyuan Software Co.Ltd SGITGHefei230088China Engineering Research Center of Post Big Data Technology and Application of Jiangsu Province Research and Development Center of Post Industry Technology of the State Posts Bureau(Internet of Things Technology)Engineering Research Center of Broadband Wireless Communication Technology of the Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing210003China Department of Electrical Engineering and Computer Science Cleveland State UniversityCleveland44115USA

As the power Internet of Things(IoT)enters the security construction stage,the massive use of perception layer devices urgently requires an identity authentication scheme that considers both security and *** existing public key infrastructure(PKI)-based security authentication scheme is currently difficult to apply in many terminals in *** key distribution and management costs are high,which hinders the development of power IoT security *** Public Key(CPK)technology uses a small number of seeds to generate unlimited public *** is very suitable for identity authentication in the power Internet of *** this paper,we propose a novel identity authentication scheme for power *** scheme combines the physical unclonable function(PUF)with improved CPK technology to achieve mutual identity authentication between power IoT terminals and *** proposed scheme does not require third-party authentication and improves the security of identity authentication for power ***,the scheme reduces the resource consumption of power IoT *** improved CPK algorithm solves the key collision problem,and the third party only needs to save the private key and the public key *** results show that the amount of storage resources occupied in our scheme is *** proposed scheme is more suitable for the power IoT.

关键词： Power Internet of Things terminal equipment identity authentication CPK PUF

A Case of Multi-Stage Fracturing Horizontal Well Used in BZ Oilfield in Bohai Bay Low-Permeability Oilfield Development

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Journal of Geoscience and Environment Protection 2020年第7期8卷 147-154页

作者： Xiujuan Zhao chuanjun wang Quanlin wang Jie Tan Wei Yang Bohai Oilfield Research Institute of CNOOC Ltd.-Tianjin Branch Tianjin China

BZ oilfield in Bohai Bay of China was a typical offshore low permeability oilfield, which was restricted by many factors such as environment and economy. In this paper, the development characteristics of BZ oilfield were summarized in depth, and the new development mode of offshore low-permeability oilfield was explored from reservoir prediction, well spacing and fracturing technology. Taking BZ oilfield as an example, a set of technical system for the effective development of offshore low permeability oilfield had been formed through research, which mainly includes reservoir prediction and evaluation of offshore middle and deep low permeability oilfield, optimization of horizontal well pattern, multi-stage fracturing design of horizontal well and other technologies. The results show that improving the resolution of seismic data, strengthening the analysis of seismic reflection characteristics and carrying out the comprehensive study of seismic geology were the keys to solve the reservoir prediction of offshore low-permeability oil fields. Multi-stage fracturing horizontal well pattern is the main pattern of offshore low-permeability oilfield development. The parameters of multi-stage fracturing horizontal well together affect the development effect. Selecting the optimal fractured horizontal well pattern can greatly improve the development effect. The successful combination and application of new technology system was the foundation and core of conquering offshore low-permeability oil fields. On the basis of understanding the geological characteristics of oil reservoirs, it is an effective means of developing offshore low-permeability oil fields by selecting reasonable production methods, well types and well patterns. Using efficient perforation and fracturing technology to successfully control fracture parameters and form optimal injection and production well pattern was the key to improve low permeability offshore oil fields.

关键词： Low Permeability Offshore Oil Field Multi-Stage Fracturing Horizontal Well Pattern

基于区间优化模型的低碳经济发展碳排放量控制研究

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生态经济 2017年第7期33卷 19-24页

作者：郑传均王子豪中南大学商学院湖南长沙410083

全球性气候变暖成为世界性的环境问题,作为平衡碳排放与经济发展之间的最佳发展模式,低碳经济发展引起越来越多人的关注,世界各国也由传统经济转向低碳经济发展。在分析低碳经济理论的基础上,从控制碳排放总量的角度,利用区间规划方法... 详细信息

全球性气候变暖成为世界性的环境问题,作为平衡碳排放与经济发展之间的最佳发展模式,低碳经济发展引起越来越多人的关注,世界各国也由传统经济转向低碳经济发展。在分析低碳经济理论的基础上,从控制碳排放总量的角度,利用区间规划方法构建优化模型,对我国低碳经济发展碳排放量进行实证研究,并基于研究结果对控制碳排放量,促进低碳经济发展提出合理建议。

关键词：区间优化模型低碳经济碳排放量控制

基于C语言的DES与RSA数据加密算法实现与分析

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电子测试 2015年第2期26卷 40-41,35页

作者：王传俊烟台汽车工程职业学院烟台265500

详细分析和介绍了DES和RSA加密算法的原理,通过C语言具体实现两种算法的加密和解密过程。同时对两种算法的差异进行分析和比较,总结出两种加密算法的特点。

关键词： DES算法 RSA算法 C语言

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锥形转子制动电动机轴向磁拉力测试装置

电机与控制应用 2013年第3期40卷 50-52页

作者：王传军夏勇琳上海电机系统节能工程技术研究中心上海200063

轴向磁拉力是锥形转子制动电动机的重要性能参数,是进行磁拉力特性曲线试验必须测定的参数之一。介绍了一种轴向磁拉力测试装置,详细阐述了其测试原理、结构组成及测试流程。

关键词：锥形转子制动电动机磁拉力测试装置特性曲线

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钢铁厂高炉冶炼过程计算机控制技术研究

工业加热 2024年第12期53卷 29-32页

作者：王传俊烟台汽车工程职业学院山东烟台265500

钢铁工业一直以来都是国民经济中的支柱产业之一,而高炉冶炼作为钢铁生产的核心环节,其效率和质量直接影响着整个产业链的运行。传统的高炉冶炼过程主要依赖于人工操作和经验积累,然而,这种方式在面对日益复杂和高效率要求的现代钢铁生... 详细信息

钢铁工业一直以来都是国民经济中的支柱产业之一,而高炉冶炼作为钢铁生产的核心环节,其效率和质量直接影响着整个产业链的运行。传统的高炉冶炼过程主要依赖于人工操作和经验积累,然而,这种方式在面对日益复杂和高效率要求的现代钢铁生产中显得力不从心。计算机控制技术的引入为高炉冶炼带来了全新的可能性,通过实时监测、数据分析等,能够更准确地调控炉温、得生产过程更为精细化和自动化。聚焦于高炉冶炼计算机控制设计,分析高炉冶炼工艺与燃烧原理,探讨冶炼燃烧模糊解耦控制方法,并对具体软硬件设计做出介绍,希望为高炉冶炼中计算机控制技术的进一步发展提供有力的理论支持和实践指导,进一步提升我国钢铁工业的核心竞争力,也为全球范围内高炉冶炼技术的创新和进步做出贡献。

关键词：钢铁厂高炉冶炼计算机控制系统设计