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Science China(Technological Sciences) 2009年第8期52卷 2340-2349页

作者： bai Yin SHI YongJiu WANG YuanQing Department of Civil Engineering Key Laboratory of Structural Engineering and Vibration of China Education MinistryTsinghua UniversityBeijing 100084China

Large span cable-supported structures have been developed rapidly in China, and they always adopt high-strength steel cables as structural members. However, the modulus of elasticity and yield strength of steel material will decrease seriously under fire conditions while fire protection is unlikely to be provided for steel cable. Several typical large span cable-supported structures such as cable truss, beam string structure and prestressed cable net are studied on their structural behaviour in this paper. Theoretical formulae are derived in terms of geometrical and material nonlinearity with high temperature effect. Finite element models are also established to simulate the structural performance under fire conditions. The calculation formulae for fire-resisting design are suggested for these three types of structures, while displacement and prestressed force variation rules are also given.

关键词： cable-supported structure fire resisting design theoretical deriviation prestensioning force variation FEA model

牙周相关细胞中NLRP3炎症小体对牙周炎影响及相关靶向治疗的研究进展

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现代免疫学 2024年第2期44卷 158-164页

作者：陈柏熙陈广洁上海交通大学医学院免疫学与微生物学系上海200025

NOD样受体家族含pyrin结构域蛋白3(NOD-like receptor family pyrin domain-containing protein 3,NLRP3)炎症小体是一种蛋白质复合体,可促进Caspase的活化和IL-1β的成熟,在多种炎症的发生、发展过程中起促进作用。牙周炎(periodontitis,PD)的发生与牙周组织的菌群失调有关,NLRP3炎症小体参与中性粒细胞、巨噬细胞、破骨细胞(osteoclast,OC)和人牙周膜成纤维细胞(human periodontal liqament fibroblast,HPLF)的活化过程。该文归纳了相关免疫细胞及基质细胞的NLRP3炎症小体对PD的影响,并简述了与NLRP3炎症小体相关的PD治疗新思路。

关键词： NOD样受体家族含pyrin结构域蛋白3 牙周炎白细胞介素1β 靶向治疗

基于关联规则和证据理论的输电线路水土流失地质灾害风险评估

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四川电力技术 2024年第1期47卷 15-21页

作者：白剑锋高峰吴振长沙电力职业技术学院湖南长沙410131 国网湖南省电力有限公司技术技能培训中心湖南长沙410131

为了及时发现输电线路潜在的地质灾害隐患,提出了架空输电线路水土流失地质灾害风险评估方法。首先,结合架空输电线路环境特征、气象数据和巡线相关数据,利用关联规则量化环境特征与水土流失灾害的关联关系,基于证据理论以坡度、坡向、... 详细信息

为了及时发现输电线路潜在的地质灾害隐患,提出了架空输电线路水土流失地质灾害风险评估方法。首先,结合架空输电线路环境特征、气象数据和巡线相关数据,利用关联规则量化环境特征与水土流失灾害的关联关系,基于证据理论以坡度、坡向、坡位、海拔等特征因子为证据体计算水土流失灾害基本信度;然后,结合雨温联合致灾风险概率分布函数,构建了架空线路水土流失灾害风险概率计算模型。以某500 kV线路为例,分析了该评估模型的详细计算流程,划分了输电线路水土流失灾害风险等级,提出了差异化的地质灾害风险防范措施。该方法能有效评估架空输电线路的水土流失灾害风险,为线路的智能化运维管理提供理论支持。

关键词：水土流失架空输电线路地质灾害风险评估

基于吉林省图书馆专利数据资源的吉林省汽车动力电池检测设备发展分析

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吉林省教育学院学报 2024年第3期40卷 26-34页

作者：张戈王桂敏白羽红吉林省图书馆吉林省实验中学

汽车电动化是实现“碳达峰”以及“碳中和”的重要途径。电动汽车离不开动力电池,其检测设备的种类和精度也体现动力电池的产业基础能力,目前动力电池相关的专利分析多集中在电池本身及控制系统,缺乏对检测设备的研究分析。本文通过吉... 详细信息

汽车电动化是实现“碳达峰”以及“碳中和”的重要途径。电动汽车离不开动力电池,其检测设备的种类和精度也体现动力电池的产业基础能力,目前动力电池相关的专利分析多集中在电池本身及控制系统,缺乏对检测设备的研究分析。本文通过吉林省图书馆专利数据资源、Incopat专利检索分析软件,从汽车动力电池检测设备全球专利申请态势、在华专利申请态势、技术热点、在华主要申请机构、申请人来源省市、专利布局现状、专利申请布局、汽车产业集中区域动力电池检测设备国内专利布局等多个角度进行分析,发现:在华专利申请数量约占全球专利数量的90%,但吉林省内申请该领域专利数量较少,长期处于低量申请的停滞状态,在未来大力发展电动汽车时,易产生专利风险;吉林省内动力电池检测设备专利申请较为集中,中小企业专利申请数量总体较少。

关键词：汽车检测设备专利分析产业发展

The Aggregates in LB Films of Schiff base Aluminium (III) Complex

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Chinese Chemical Letters 2001年第3期12卷 271-272页

作者： Wei CAO Wei LIAN Yu bai bai Chun Yan LIU Hui Bo SHAO Center for Intelligent Materials United Research(CIMUR) Department of ChemistryJilin UniversityChangchun 130023 Institute of Photographic Chemistry Chinese Academy of SciencesBeijing 100101 Department of Chemistry Capital Normal UniversityBeijing 100037

The surface pressure-area (pi -A) isotherm of Schiff base aluminium (III), tris (2-hydroxy-5-nitro-N-dodecyl-benzylideneaminato) aluminium (III) (denoted as Al(TAl2)(3)), on pure water subphase was investigated. The molecular area, 0.48 nm(2), is one-third of expected value that indicated the aggregation took place. The Langmuir-Blodgett (LB) films of Al(TAl2), was transferred and characterized. The AFM image confirmed the formation of aggregates.

关键词： Aluminium (III)-Schiff base complex LB films aggregate AFM image

基于ANSYS Workbench的超高压隔膜压缩机缸盖可靠性分析

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压缩机技术 2024年第2期 46-49页

作者：白俊钢廖振洋孔荣宗杨陈栋夏一航钟涌丰电金凯威(苏州)压缩机有限公司江苏苏州215514 中国空气动力研究与发展中心超高速所四川绵阳621000 西安交通大学化学工程与技术学院陕西西安710049

缸盖是保证超高压隔膜式压缩机安全稳定运行的核心部件。根据压缩机的工作条件,对超高压隔膜压缩机缸盖进行受力分析,建立有限元模型,并利用有限元分析软件ANSYS Workbench对缸盖进行应力分析,获得了缸盖在最恶劣工况下的受力情况,分析... 详细信息

缸盖是保证超高压隔膜式压缩机安全稳定运行的核心部件。根据压缩机的工作条件,对超高压隔膜压缩机缸盖进行受力分析,建立有限元模型,并利用有限元分析软件ANSYS Workbench对缸盖进行应力分析,获得了缸盖在最恶劣工况下的受力情况,分析了应力对缸盖结构安全可靠性的影响机制,对其强度进行校核。结果表明:缸盖平均Mises应力174.49 MPa,屈服安全系数高于1.9,缸盖强度满足设计要求。

关键词： ANSYS Workbench 缸盖超高压隔膜压缩机应力分析

Performance Optimization and Comparison of the Alternating Direction Implicit CFD Solver on Multi-core and Many-Core Architectures

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Chinese Journal of Electronics 2018年第3期27卷 540-548页

作者： DENG Liang ZHAO Dan bai Hanli WANG Fang Computational Aerodynamics Institue China Aerodynamics Research and Development Center Collaborative Innovation Center of High Performance Computing National University of Denfense Technology School of Computer National University of Denfense Technology

We accelerate a double precision Alternating direction implicit(ADI) solver for three-dimensional compressible Navier-Stokes equations from our in-house Computational fluid dynamics(CFD) software on the latest multi-core and many-core architectures(Intel Sandy Bridge CPUs, Intel Many integrated core(MIC) coprocessors and NVIDIA Kepler K20c GPUs). Some performance optimization techniques are detailed discussed. We provide an in-depth analysis on the performance difference between Sandy Bridge and MIC. Experimental results show that the proposed GPU-enabled ADI solver can achieve a speedup of 5.5 on a Kepler GPU in contrast to two Sandy Bridge CPUs and our optimization techniques can improve the performance of the ADI solver by 2.5-fold on two Sandy Bridge CPUs and 1.7-fold on an Intel MIC coprocessor. We perform a cross-platform performance analysis(between GPU and MIC), which serves as case studies for developers to select the right accelerators for their target applications.

关键词： Multi-block Structured grid Alternating direction implicit(ADI) CFD solver Sandy bridge MIC GPU Optimization techniques Performance comparison

Seepage characteristics of collapse column fillings

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International Journal of Mining Science and Technology 2016年第2期26卷 333-338页

作者： Zhang Boyang bai Haibo Zhang Kai State Key Laboratory of Geomechanics and Deep Underground Engineering China University of Mining & Technology

With concealment and hysteresis,water-inrush from Karst collapse column has become an important security hazard of lower group coal mining in North *** on the MTS8 15.02 seepage test system,we analyzed the impact of consolidation pressure,initial moisture content and confining pressure on the permeability of fillings in order to study the seepage characteristics of collapse column *** results show that:(l)The permeability of collapse column fillings is of the order of 10^(-16)-10^(-15) magnitude and decreases with an increase in consolidation pressure and decrease in initial moisture content.(2) The essence of filling seepage law change is the change in porosity,and a power function relationship exists between the permeability ratio and porosity ratio.(3) With increasing confining pressure,the permeability of fillings ***,under low confining pressure(1.2-4 MPa),the change of confining pressure has no obvious influence on the permeability.

关键词： Collapse column Filings Porosity Consolidation Permeability Moisture content

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Journal of Integrative Plant Biology 2012年第5期54卷 300-311页

作者： Xufeng bai Bi Wu Yongzhong Xing National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research Huazhong Agricultural University Wuhan 430070 China

Grain yield is one of the most important indexes in rice breeding, which is governed by quantitative trait loci （QTLs）. Different map- ping populations have been used to explore the QTLs controlling yield related traits. Primary populations such as F2 and recombi- nant inbred line populations have been widely used to discover QTLs in rice genome-wide, with hundreds of yield-related QTLs detected. Advanced populations such as near isogenic lines （NILs） are efficient to further fine-map and clone target QTLs. NILs for primarily identified QTLs have been proposed and confirmed to be the ideal population for map-based cloning. To date, 20 QTLs directly affecting rice grain yield and its components have been cloned with NIL-F2 populations, and 14 new grain yield QTLs havebeen validated in the NILs. The molecular mechanisms＇of＇a continuous/y increasing number of genes are being unveiled, which aids in the understanding of the formation of grain yield. Favorable alleles for rice breeding have been ＇mined＇ from natural cultivars and wild rice by association analysis of known functional genes with target trait performance. Reasonable combination of favorable alleles has the potential to increase grain yield via use of functional marker assisted selection.

关键词： Grain yield mapping population near isogenic lines (NILs) favorable alleles functional markers,

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黄芪(药材及饮片)微生物污染菌的初步研究

中国民族民间医药 2024年第10期33卷 67-72页

作者：白雯静王海峰兰州市食品药品检验检测研究院甘肃兰州730050 甘肃省陇神戎发医药股份有限公司甘肃兰州730102

目的:对黄芪原药材以及加工后的微生物污染情况进行分析和研究,探讨药材(饮片)微生物污染的主要来源。方法:参照2015年版《中国药典》四部通则1105、1106的方法,并结合传统生化和基质辅助激光解吸电离飞行时间质谱(MALDI-TOF-MS)对纯化... 详细信息

目的:对黄芪原药材以及加工后的微生物污染情况进行分析和研究,探讨药材(饮片)微生物污染的主要来源。方法:参照2015年版《中国药典》四部通则1105、1106的方法,并结合传统生化和基质辅助激光解吸电离飞行时间质谱(MALDI-TOF-MS)对纯化的菌落进行鉴定。最后,运用SPSS 18.0软件对数据进行进一步地统计和分析。结果:黄芪原药材(饮片)在经过100℃、30 min热处理后,需氧菌总数呈现均匀性地下降,简单芽孢杆菌、成团泛菌、屎肠球菌、阴沟肠杆菌为黄芪原药材及饮片污染概率较高的菌。结论:黄芪药材(饮片)污染菌中肠杆菌科占44%,芽孢菌科占41%。耐热菌鉴定结果显示均为芽孢杆菌。在确保安全和疗效的前提下,对芽孢杆菌的杀灭十分有必要。

关键词：黄芪基质辅助激光解吸电离飞行时间质谱(MALDI-TOF-MS) 微生物污染