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Acta Geologica Sinica(English Edition) 2011年第6期85卷 1478-1494页

作者： CAI Xiyuan zhu rong China Petroleum and Chemical Corporation Beijing 100029 China Department of Ocean Science andEngineering Zhejiang University Hangzhou 310028 China

Based on the abundant information from drilling, cores, and logging, the influence of topography, size of rivers and lakes, climate changes and the lake level＇s fluctuation on the sandbodies at shallow-water delta front are systematically summarized and the sedimentary dynamic processes are analyzed. The interwell communication among the sandbodies and their planar distribution revealed from the hydrodynamic features of the development wells are integrated during the analysis. The fundamental requirements for the development of the shallow-water delta included flat topography and uniform subsiding rate. The delta plain was connected smoothly with the wide delta front and predelta, without the three-fold structure of topset, foreset, and bottomset as defined in the Gilbert Delta Model. Because of the weak fluvial effect and the lake energy is strong, the small and scattered shallow-water delta is destroyed by the scouring-backwashing, coastal current, and lake wave, resulting in the coastal sheet deposition. As the fluvial effect became stronger and the lake energy became weaker, the shape of the shallow-water deltas transferred from sheets to lumps and then branches.

关键词： lake-level fluctuation shallow-water delta sedimentary dynamics,Songliao Basin China

川崎病急性期氧化磷脂和内皮一氧化氮合酶的变化及意义

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中国当代儿科杂志 2024年第8期26卷 829-834页

作者：朱柳蓉何学华袁勇华袁浩夏晓辉湖南师范大学附属第一医院儿科湖南长沙410005 湖南师范大学附属第一医院检验科湖南长沙410005 湖南师范大学附属第一医院超声科湖南长沙410005

目的探讨川崎病(Kawasaki disease,KD)急性期患儿的血清氧化磷脂(oxidized phospholipids,OxPLs)和内皮一氧化氮合酶(endothelial nitric oxide synthase,eNOS)水平的变化,分析血清OxPLs和eNOS水平与冠状动脉病变(coronary artery lesion,CAL)的相关性,并探讨其临床意义。方法前瞻性选择95例急性期KD患儿作为KD组,根据是否合并CAL分为CAL亚组和非冠状动脉病变(non-coronary artery lesion,NCAL)亚组;另外选取同期30例仅下呼吸道感染发热患儿作为发热组,30例健康体检儿童作为健康对照组。比较各组一般资料及血清OxPLs、eNOS等实验室指标的差异,分析血清OxPLs和eNOS的相关性。结果KD组OxPLs水平高于发热组及健康对照组(P<0.05),eNOS水平低于发热组及健康对照组(P<0.05)。KD患儿治疗后较治疗前血清OxPLs下降,血清eNOS上升(P<0.05)。CAL亚组血清OxPLs高于NCAL亚组(P<0.05),血清eNOS水平低于NCAL亚组(P<0.05)。KD组患儿OxPLs与eNOS水平呈负相关(rs=-0.353,P<0.05)。结论KD急性期血清OxPLs、eNOS参与了CAL发展,可成为预测KD患儿发生CAL的生物标志物。

关键词：川崎病冠状动脉病变血清型氧化磷脂内皮一氧化氮合酶儿童

Effect of methane-hydrogen mixtures on flow and combustion of coherent jets

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Journal of Iron and Steel Research International 2017年第11期24卷 1143-1151页

作者： Ting Cheng rong zhu Kai Dong School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Research Center of Special Melting and Preparation of High-end Metal Materials University of Science and Technology BeijingBeijing 100083China

Coherent jets are widely used in electric are furnace （EAF） steelmaking to increase the oxygen utilization and chemical reaction rates. However, the influence of fuel gas combustion on jet behavior is not fully understood yet. The flow and combustion characteristics of a coherent jet were thus investigated at steelmaking temperature using Fluent software, and a detailed chemical kinetic reaction mecha- nism was used in the combustion reaction model. The axial velocity and total temperature of the supersonic jet were measured via hot state experiments. The simulation results were compared with the experimental data and the empirical jet model proposed by Ito and Muchi and good consistency was obtained. The research results indicated that the potential core length of the coherent jet can be prolonged by optimizing the combustion effect of the fuel gas. Besides, the behavior of the supersonic jet in the subsonic section was also investigated, as it is an important factor for controlling the position of the oxygen lance. The investigation indicated that the attenuation of the coherent jet is more notable than that of the conventional jet in the subsonic section.

关键词： Supersonic jet Numerical simulation Mixed fuel gas Flow field Combustion characteristic

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我国体育健康促进模式研究

当代体育科技 2024年第11期14卷 165-169页

作者：朱荣王佳媛温州医科大学体育科学部浙江温州325035

体育运动作为有效促进健康的生活行为方式已经获得普遍认同,在建设“健康中国2030”、实现全民健康中发挥着重要作用。构建体育健康促进模式研究,能更加精准制定政策,动员人们参与锻炼,改善生活方式,防治慢性疾病,促进身心健康。当前我... 详细信息

体育运动作为有效促进健康的生活行为方式已经获得普遍认同,在建设“健康中国2030”、实现全民健康中发挥着重要作用。构建体育健康促进模式研究,能更加精准制定政策,动员人们参与锻炼,改善生活方式,防治慢性疾病,促进身心健康。当前我国体育健康促进模式研究包括学校—家庭—社区三元联动的体育健康促进模式、家庭—社区—医院—高校四位一体的体育健康促进模式、社会生态体育健康促进模式、PRECEDE-PROCEED体育健康促进模式等。研究认为,PRECEDE-PROCEED体育健康促进模式能克服其他模式研究因素单一、实证缺乏、领域狭窄的局限性,多维动态、系统地开展体育健康促进研究,是较适合当前我国现代化强国建设的路径。

关键词：健康促进体育健康促进 PRECEDE-PROCEED模式体育健康促进模式

Atmospheric environmental capacity and urban atmospheric load in China's Mainland

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Science China Earth Sciences 2018年第1期61卷 33-46页

作者： XU DaHai WANG Yu zhu rong State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA Chinese Academy of Meteorological Sciences Beijing 100081 China National Climatic Center Beijing 100081 China

Daily and annual average atmospheric environmental capacity coefficient(A-value) sequences for China's Mainland are calculated from hourly data recorded at 378 ground stations over 1975–2014. A-values at different recurrence intervals are calculated by fitting the sequences to Pearson type III distribution curves. Based on these A-values and source-sink balance(reference concentration 100 μg m^(-3)), atmospheric environmental capacities at the recurrence intervals are calculated for all of China's Mainland and each provincial administrative region. The climate average atmospheric environmental capacity reference value for the entire mainland is 2.169×10~7 t yr^(-1). An urban atmospheric load index is defined for analyses of the impact of population density on the urban atmospheric environment. Analyses suggest that this index is also useful for differentiating whether air quality changes are attributable to varying meteorological conditions or variations of artificial emission *** guiding the control of unorganized emission sources are derived for preventing air quality deterioration during urban expansion and population concentration.

关键词： Atmospheric environmental capacity Pearson type III distribution Recurrence interval Urban atmospheric load index Emission rate density

TESTING INEQUALITY CONSTRAINTS IN A LINEAR REGRESSION MODEL WITH SPHERICALLY SYMMETRIC DISTURBANCES

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Journal of Systems Science & Complexity 2014年第6期27卷 1204-1212页

作者： zhu rong ZHOU Sherry Z F Academy of Mathematics and Systems Science Chinese Academy of Sciences Department of Management Sciences City University of Hong Kong

This paper develops a Wald statistic for testing the validity of multivariate inequality constraints in linear regression models with spherically symmetric disturbances,and derive the distributions of the test statistic under null and nonnull *** power of the test is then *** evaluations are also carried out to examine the power performances of the test for the case in which errors follow a multivariate student-t(Mt) distribution.

关键词： Inequality constraint spherically symmetric distribution Wald test.

Characteristics of a coherent jet enshrouded in a supersonic fuel gas

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International Journal of Minerals,Metallurgy and Materials 2020年第2期27卷 173-180页

作者： Fei Zhao rong zhu Wen-rui Wang Key Laboratory of Fluid Interaction with Material University of Science and Technology BeijingBeijing 100083China National Center for Materials Service Safety University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineer University of Science and Technology BeijingBeijing 100083China

Based on a current coherent jet,this study proposes a supersonic combustion(SC)coherent jet in which the main oxygen jet is surrounded by a supersonic fuel *** characteristics of the proposed coherent jet are analyzed using experimental methods and numerical simulations in the high-temperature environment of electric arc furnace(EAF)*** SC coherent jet achieved stable combustion in the EAF steelmaking *** simulated combustion temperature of the supersonic shrouding methane gas was 2930 K,slightly below the theoretical combustion temperature of methane–oxygen *** high speed and temperature of the supersonic flame effectively weakened the interaction between the main oxygen jet and the external ambient gas,inhibiting the radial expansion of the main oxygen jet and maintaining its high speed and low turbulence over a long *** features improved the impact capacity of the coherent jet and strengthened the stirring intensity in the EAF bath.

关键词： EAF steelmaking coherent jet supersonic shrouding fuel gas supersonic combustion field characteristics

High-performance, low-cost joint equalizer and trellis decoder for 1000BASE-T gigabit Ethernet transceiver

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The Journal of China Universities of Posts and Telecommunications 2007年第2期14卷 106-111页

作者： zhu Yue rong Meng-tian Department of Electronic Engineering School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 China

This article presents an M-algorithm （MA） decoder with 4 survival paths （MA4） for Institute of Electrical and Electronics Engineers （IEEE） 802.3ab 1000BASE-T gigabit Ethernet （GbE） transceiver. To fulfill the entire requirements, various methods were introduced to accelerate the MA4 decoder while retaining the desired high performance and low complexity. Optimized look-ahead architecture was employed to solve the critical path problem with minimal gate consumption. Symbol compression methods saved registers during pipeline stages. A sorting network accelerated the kernel sorting operation at low hardware cost by utilizing the special characteristics of MA4. Simulations and synthesis results show that the proposed decoder achieves 125 MHz clock frequency and l Gb/s throughput in 1.8 V 0.18μm standard cell complementary metal-oxide-semiconductor （CMOS） process. It achieves additional 0.4 dB coding gain over 14tap parallel decision feedback decoder （PDFD） with 39% area reduction.

关键词： 1000BASE-T GbE M-algorithm PDFD look-ahead technology

Asymptotic Ruin Probabilities of the Renewal Model with Constant Interest Force and Dependent Heavy-tailed Claims

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Acta Mathematicae Applicatae Sinica 2011年第2期27卷 329-338页

作者： Jin-zhu Li rong Wu School of Mathematical Sciences and LPMC Nankai University Tianjin 300071 China

In this paper, we investigate the asymptotic behavior for the finite- and infinite-time ruin probabilities of a nonstandard renewal model in which the claims are identically distributed but not necessarily inde- pendent. Under the assumptions that the identical distribution of the claims belongs to the class of extended regular variation （ERV） and that the tails of joint distributions of every two claims are negligible compared to the tails of their margins, we obtain the precise approximations for the finite- and infinite-time ruin probabilities.

关键词： asymptotic behavior extended regular variation negligible joint tails ruin probability

BLUP Estimation of Linear Mixed-effects Models with Measurement Errors and Its Applications to the Estimation of Small Areas

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Acta Mathematica Sinica,English Series 2014年第12期30卷 2027-2044页

作者： rong zhu Guo Hua ZOU Academy of Mathematics and Systems Science Chinese Academy of Sciences

The linear mixed-effects model （LMM） is a very useful tool for analyzing cluster data. In practice, however, the exact values of the variables are often difficult to observe. In this paper, we consider the LMM with measurement errors in the covariates. The empirical BLUP estimator of the linear combination of the fixed and random effects and its approximate conditional MSE are derived. The application to the estimation of small area is provided. Simulation study shows good performance of the proposed estimators.

关键词： BLUP linear mixed-effects models measurement errors small area estimation