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Microfacies of Deep-water Deposits and Forming Models of the Chinese Continental Scientific Drilling-SKII

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Acta Geologica Sinica(English Edition) 2007年第6期81卷 1026-1032页

作者： CHENG Rihui wang guodong wang Pujun GAO Youfeng College of Earth Sciences of Jilin University Changchun Jilin 130061

Extensive transgression of lake water occurred during the Cretaceous Qingshankou Stage and the Nengjiang Stage in the Songliao basin, forming widespread deep-water deposits. Eleven types of microfacies of deep-water deposits have been recognized in the continuous core rocks from the SKII, including mudstone of still water, marlite, dolostone, off shale, volcanic ashes, turbidite, slump sediment, tempestite, seismite, ostracoda limestone and sparry carbonate, which are divided into two types： microfacies generated due to gradually changing environments （Ⅰ） and microfacies generated due to geological events （Ⅱ）. Type Ⅰ is composed of some special fine grain sediments such as marlite, dolomite stone and oil shale as well as mudstone and Type Ⅱ is composed of some sediments related to geological events, such as volcanic ashes, turbiditie, slump sediment, tempestite, seismite, ostracoda limestone. The formation of sparry carbonate may be controlled by factors related to both environments and events. Generally, mudstone sediments of still water can be regarded as background sediments, and the rest sediments are all event sediments, which have unique forming models, which may reflect controlling effects of climatics and tectonics.

关键词： Cretaceous deep-water deposit model of microfacies Songliao basin SKII

Growth Behavior of a Phase in ***-0.35Si-0.7Nd Titanium Alloy

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Journal of Materials Science & Technology 2006年第4期22卷 459-464页

作者： Shangzhou ZHANG Yuan GAO guodong wang Yuyin LIU Rui YANG School of Environmental and Materials Engineering Yantai University Yantai 264005 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The thermal stability of the microstructure of a near-α titanium alloy after aging at 750℃ was investigated using optical microscope and transmission electron microscope as well as composition analysis. Aging treatment brings about significant coarsening of grain boundary α and α platelets within the colonies for martensitic microstructure. The observed changes are related to the growth steps or ledges of the interface and lamellar termination presented in the microstructure. The composition analysis of the coarsened α plate is consistent with the growth kinetics. The α Widmanstaetten plates were coarsened due to the movement of α /β interface for Widmanstaetten microstructure, and the phase boundaries of primary α（αp） phase directly moved into the transformed β for bimodal microstructure.

关键词： Near-α titanium alloy Microstructure Coarsening Aging

非能动安全壳冷却系统空气混合对流换热试验研究

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原子能科学技术 2024年第4期58卷 771-782页

作者：杨鹏王国栋李万总黄思洋周明慧刘宇生态环境部核与辐射安全中心北京102401 上海核工程研究设计院股份有限公司上海200233 上海核能装备测试验证中心有限公司上海200233

为论证大型非能动核电厂空气导流板优化方案的可行性,搭建了安全壳冷却能力验证试验台架(COCOVET)。本文选取COCOVET空气冷却试验工况,采用粒子图像测速(PIV)手段将非能动安全壳冷却系统(PCS)环腔的空气流动可视化,通过对比试验数据和... 详细信息

为论证大型非能动核电厂空气导流板优化方案的可行性,搭建了安全壳冷却能力验证试验台架(COCOVET)。本文选取COCOVET空气冷却试验工况,采用粒子图像测速(PIV)手段将非能动安全壳冷却系统(PCS)环腔的空气流动可视化,通过对比试验数据和程序模拟结果,研究PCS环腔空气强迫对流和自然对流并存的混合对流换热现象,论证导流板优化方案可行性。研究结果表明:PCS环腔下降段空气到达导流板尾部区域后,大部分空气折流180°进入上升段,沿导流板向上流动,少量空气沿冷却面继续向下流动。在无导流板区域,加热面传热方式以偏自然对流类型为主,加热面热流密度沿高度方向基本不变。在有导流板区域,PCS环腔上升段存在明显的入口效应,加热面热流密度呈现迅速增加后降低的趋势。安全壳安全分析程序计算值和试验值符合良好,适用于模拟空气混合对流换热过程。研究结果验证了大型非能动核电厂导流板优化方案可行性,也丰富了空气混合对流换热研究内容。

关键词：空气导流板非能动安全壳冷却系统空气混合对流换热程序适用性

Spectral properties and Judd-Ofelt analysis of novel red phosphors Gd_(2)InSbO_(7):Eu^(3+)with high color purity for white LEDs

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Journal of Rare Earths 2021年第11期39卷 1327-1335,I0001页

作者： Yu wang Baokui Zhao Bin Deng Shanshan Chen Yuanyuan Liu a guodong wang Ruijin Yu College of Chemistry&Pharmacy Northwest A&F UniversityYangling 712100China College of Science Northwest A&F UniversityYangling 712100China College of Chemistry&Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043China Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application Chenzhou 423043China

Gd_(2)InSbO_(7):Eu^(3+)red phosphors we re successfully synthesized via high-temperature solid-state reactio *** phase purity,particle size,and luminescence properties of obtained phosphors were measured and analyzed in *** Gd_(2)InSbO_(7)lattice possesses cubic structure with F_(d-3 m)(227)space *** phosphors emit bright red emission at 628 nm under 393 nm excitation,and this phenomenon is attributed to the^(5)D0-^(7)F_(2)*** Judd-Ofelt parameters(Ω_(2),Ω_(4)),transition ratio,and branching ratios(β)of Eu^(3+)-doped Gd_(2)InSbO_(7)phosphor were calculated on the basis of the emission spectra and decay *** optimal content in Gd_(2)InSbO_(7):xEu^(3+)is identified to be 15 mol%.The thermal quenching of Gd_(2)InSbO_(7):Eu^(3+)is found to be over 500 K,and its activation energy is 0.26 *** Commission Internationale de l’Eclairage(CIE)chromaticity coordinates of Gd_(2)InSbO_(7):15%Eu^(3+)are(0.629,0.371),which are close to ideal red chromaticity coordinates(0.670,0.330).The fabricated w-LED exhibits good color rendering index(Ra)(86),correlated color temperature(CCT)(6997 K),and CIE chromaticity coordinates(0.302,0.330).The obtained results demonstrate that Gd_(2)InSbO_(7):Eu^(3+)phosphors have potential applications in white LEDs.

关键词： Luminescence Phosphor Antimonate Gd_(2)InSbO_(7) Rare earths

Risk factors associated with early recurrence of adenocarcinoma of gastroesophageal junction after curative resection

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Chinese Journal of Cancer Research 2013年第3期25卷 334-338页

作者： guodong wang Aiwen Wu Xiaojing Cheng Jiafu Ji Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) Department of Gastrointestinal Surgical Oncology Peking University Cancer Hospital & Institute

Objective： To clarify the important clinicopathological factors affecting the early recurrence of adenocarcinoma of esophagogastric junction （/kEG）. Methods： We retrospectively reviewed the clinical data of 147 AEG patients who underwent R0 resection during the period from December 1995 to December 2007. Risk factors asssociated with the early recurrence were analyzed by X2 test and logistic regression test. Results： The mean time to tumor recurrence was 16.3 months after R0 resection, and the 1-year recurrence rate was 48.3%. Univariate analysis showed that the histological grade （poorly and moderately differentiated）, number of positive lymph nodes, and vascular invasion were significantly related with the early recurrence （P〈0.05）. Logistic multivariate regression analysis showed that only histological grade and vascular invasion were independently related with early tumor recurrence （P〈0.05）, Conclusions： Histological grade and vascular tumor recurrence after R0 resection for/kEG. invasion are independent factors for predicting the early

关键词： Adenocarcinoma of esophagogastric junction (AEG) tumor recurrence risk factor

A Bayesian belief-rule-based inference multivariate alarm system for nonlinear time-varying processes

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Science China(Information Sciences) 2021年第10期64卷 194-205页

作者： Xiaobin XU Zhuochen YU Jiusun ZENG Wanqi XIONG Yanzhu HU guodong wang School of Automation Hangzhou Dianzi University College of Metrology and Measurement Engineering China Jiliang University College of Engineering Peking University School of Automation Beijing University of Posts and Telecommunications Institute of Computer Engineering Vienna University of Technology

This study considers the multivariate alarm design problem of nonlinear time-varying systems by a Bayesian belief-rule-based(BRB) method. In the method, the series of belief rules are constructed to approximate the relationship between input and output variables. Hence, the method does not require an explicit model structure and is suitable for capturing nonlinear causal relationships between *** the purpose of online application, this study further introduces sequential Monte Carlo(SMC) sampling to update the BRB model parameters, which is a fast and efficient method for approximately inferring nonlinear sequence models. Using the model parameters obtained by SMC sampling, the series of output variable tracking errors can be estimated and employed for multivariate alarm design. The case study of a condensate pump verifies the effectiveness of the proposed method.

关键词： multivariate alarm design belief-rule-based method nonlinear time-varying process sequential Monte Carlo

Numerical Simulation of Two Types of Electromagnetic Edge Dam Used in Twin Roll Strip Casting

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Journal of Materials Science & Technology 2005年第4期21卷 526-530页

作者： Peiwei BAO Peijie LI Hongshuang DI Xianghua LIU guodong wang Key Laboratory for Advanced Manufacturing by Materials Processing Technology Department of Mechanical Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 China

Two types of electromagnetic edge dams were analyzed by using finite element method in present paper. The magnetic vector potential method and edge element method were used. The distributions of the magnetic field, the eddy current intensity and the magnetic force were obtained from the computing. The differences in these fields were explained according to the two types of electromagnetic dam, and characters of their application in twin roll casting were also discussed.

关键词： Twin roll casting Electromagnetic field Electromagnetic containment Numerical simulation Finite element

Determination of No-recrystallization Temperature for a Nb-bearing Steel

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Journal of Wuhan University of Technology(Materials Science) 2016年第3期31卷 644-647页

作者：杨浩周晓光 liu zhenyu wang guodong State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

The recrystallization behavior of a Nb-bearing steel was investigated during multipass deformation under continuous cooling conditions. By a series of six-pass compression tests conducted on a thermomechanical simulator, the effect of deformation parameters, including strain, strain rate and interpass time, on the no-recrystallization temperature （T） was determined. The results show that T decreases with increasing strain and also decreases slightly with increasing strain rate. The strain has more appreciable influence on the T compared with strain rate. When the interpass time is less than 10 s, the T decreases with increasing interpass time. The mathematical model of T was established considering the effect of pass strain, strain rate and interpass time. The calculated results agreed well with the actual experimental value.

关键词： Nb-bearing steel recrystallization no-recrystallization temperature deformation parameters

Microstructure Characterization of High-heat-input Welding Joint of HSLA Steel Plate for Oil Storage Construction

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Journal of Materials Science & Technology 2009年第6期25卷 857-860页

作者： Weihua Sun guodong wang Jiming Zhang Dianxiu Xia Hao Sun State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 China R & D Center Jinan Iron and Steel Group Co. Ltd. Jinan 250101 China

In this paper, microstructure and mechanical properties of welding metals in 610 MPa high strength low alloy （HSLA） were studied after high-heat-input welding. Both the base material and the weld joint proved excellent strength and toughness by vibratory electrogas arc （VEGA） welding under 90 to 100 kJ/cm heatinput. The heat-affected zone （HAZ） was comprised of fine-grain zone （FGZ） and coarse-grain zone （CGZ）, which characterizes fine granular structure and lathing-bainite substructure, It has found that large quantity of dispersed TiN and M23E6 precipitates restrain structure growing in HAZ and strengthen the weldment together with dislocations in the welded joint.

关键词： Weld joint Microstructure Precipitates High-heat-input welding Vibratory electrogas arc welding On-line accelerated cooling Off-llne tempering