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DISTRIBUTION OF Cu AND ITS EFFECT ON MICROSTRUCTURE OF Cu-BEARING STEEL

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Chinese Journal of Mechanical Engineering 2006年第4期19卷 579-582页

作者： CHEN Xinhua DONG junhua han Enhou KE Wei Environmental Corrosion Center Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

In order to investigate the distribution of Cu and its effect on the microstructure of Cu-bearing steel, a series of mild steels containing different contents of Cu are developed by vacuum electric arc furnace. These steels are annealed at 1 260℃, 1 100 ℃ and 1 000℃ respectively for one hour and followed by furnace cooling to room temperature to simulate the heat treatment before the rolling process. The results show that Cu did not obviously segregate in annealed steels. The scanning electron microscope （SEM） observation show that the main microstruetures in Cu-bearing steel are ferrite and pearlite; The volume fraction of pearlite in steel increase with increasing Cu content. The grain size reduces with the decrease of annealing temperature. The results of energy dispersive X-ray analysis （EDXA） suggest that the Cu content in pearlite is higher than that in ferrite, which means that the microstructure-segregatian of Cu exists. However, the cast specimens show that Cu content in MnS and S-rich phase is very high, and Cu changed the distribution of/vinS in steel. In addition, the optimal Cu content in steel between 0.2%-0.4% and the optimal annealing temperature between 1 100-1 200℃are determined by the economical and practical principles.

关键词： Cu alloying Annealing Energy disperse X-ray analysis (EDXA) Cu segregation

Effect of Calcium Aluminate Cement Addition on Properties of Al_(2)O_(3)-SiO_(2) Based Gunning Mixes

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China's Refractories 2022年第3期31卷 24-27页

作者： ZHOU Junjie han junhua CISDI Engineering Co. Ltd.Chongqing 400013China

Al_(2)O_(3)-SiO_(2) based gunning mixes were prepared with electric porcelain waste,silica fume,bauxite,quartz powder,and calcium aluminate cement(CAC)of different additions as raw materials firing at different temperatures to research the effect of the CAC addition on their phase change and *** results show that:from theoretical analysis of the phase diagram,with the CAC addition increasing from 8%to 14%,anorthite increases from 40.0%to 77.7%,by *** the rising CAC addition,the permanent linear change on heating of specimens increases;for the specimens dried at 110℃or hot-treated at 1000℃,the bulk density and the mechanical properties increase,and the apparent porosity decreases;and for those hottreated at 1300℃,the bulk density and the mechanical properties firstly increase,and then decrease,while the apparent porosity shows an opposite *** into account the phases at high temperatures and the properties,the optimal CAC addition of Al_(2)O_(3)-SiO_(2) based gunning mixes is 12%.

关键词： calcium aluminate cement gunning mix calcia-alumina-silica phase diagram physical properties

Determination of Hexavalent Chromium in Refractories by Diphenylcarbazide Spectrophotometry

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China's Refractories 2021年第3期30卷 28-32页

作者： FU Yuanyuan han junhua CAO Haijie LEI Xiaoyu han Dan XU Xiaoying CISDI Engineering Co. Ltd.Chongqing 400000China Sinosteel Luoyang Institute of Refractories Research Co. Ltd.Luoyang 471039China

The high chrome refractories were crushed,ground into powder and sampled.A mixture solution of sodium carbonate and sodium hydroxide was used to extract the powder *** extracted solution from the samples was mixed and reacted with diphenylcarbazide to form colored *** hexavalent chromium content in the samples was determined by *** effects of the extracting conditions,the color reagent reaction conditions,the sample mass,the working curve and the trivalent chromium coexistence on the results were *** experiments about determination,recovery and precision were carried *** relative standard deviation was less than 5%and the recovery rate was 98%-104%.

关键词： refractories hexavalent chromium spectrophotometry

Effects of buckwheat milk Co-fermented with two probiotics and two commercial yoghurt strains on gut microbiota and production of short-chain Fatty Acids

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Food Bioscience 2023年第3期53卷 496-502页

作者： Yang Wang Sijia Qu Menghan Chen Yue Cui Chenshan Shi Xiaolu Pu Wenhui Gao Quanhong Li junhua han Aixia Zhang College of Food Science and Biology Hebei University of Science and TechnologyShijiazhuang050018China Institute of Biotechnology and Food Science Hebei Academy of Agriculture and Forestry SciencesShijiazhuang050051China Shijiazhuang Junlebao Dairy Co. Ltd.Shijiazhuang050221China College of Food Science and Nutritional Engineering China Agricultural UniversityBeijing100083China

The fascinating ingredient of buckwheat fermented by probiotics with functional superiorities was considered as a substitute for milk-based *** this work,buckwheat milk fermented by probiotic lactic acid bacteria(FBM)was *** effects of FBM on body weight,gut microbiota and short chain fatty acids(SCFA)in mice were also *** showed that the acidity levels of FBM within 15 days were in the range of 70-100°T,and total microbial counts were higher than 1×10^(6)CFU/*** showed significant effect in controlling weight ***,intestinal flora diversity in mice fed with FBM was *** abundance of Barnesiella,Ruminococcus,Bacteroides and Prevotella in FBM group was significantly ***,the contents of six SCFA in the FBM group were significantly higher than the other two *** findings will provide referential information in revealing the probiotic functions and developing buckwheat-based products as dairy alternatives.

关键词： Sweet buckwheat Probiotics Intestinal flora Short-chain fatty acids

Alarm-Based Root Cause Analysis Based on Weighted Fault Propagation Topology for Distributed Information Network

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ZTE Communications 2022年第3期20卷 77-84页

作者： LYU Xiaomeng CHEN Hao WU Zhenyu han junhua GUO Huifeng Engineering Research Center for Information Networks Beijing Uni-versity of Posts and TelecommunicationsBeijing 100876China ZTE Corporation Shenzhen 518057China

A distributed information network with complex network structure always has a challenge of locating fault root *** this paper,we propose a novel root cause analysis(RCA)method by random walk on the weighted fault propagation *** from other RCA methods,it mines effective features information related to root causes from offline *** with the information,online alarms and graph relationship of network structure are used to construct a weighted ***,this approach does not require operational experience and can be widely applied in different distributed *** proposed method can be used in multiple fault location *** experiment results show the proposed approach achieves much better performance with 6%higher precision at least for root fault location,compared with three baseline ***,we explain how the optimal parameter’s value in the random walk algorithm influences RCA results.

关键词： distributed information network alarm graph root cause analysis random walk

西安地铁3号线胡家庙站与上盖物业的协同设计

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城市轨道交通研究 2021年第5期24卷 62-66,72页

作者：韩君华中国建筑西北设计研究院有限公司西安710018

在地铁上盖物业与城市轨道交通协同建设的大趋势下,建筑与地铁站点的合建已成为普遍模式。西安东骊胡家庙购物中心与地铁站点的协同设计,反映出城市建筑与地铁站点合建过程中存在的主要问题。本文通过分析问题并提出解决策略,其研究成... 详细信息

在地铁上盖物业与城市轨道交通协同建设的大趋势下,建筑与地铁站点的合建已成为普遍模式。西安东骊胡家庙购物中心与地铁站点的协同设计,反映出城市建筑与地铁站点合建过程中存在的主要问题。本文通过分析问题并提出解决策略,其研究成果可为城市建设进程中众多类似工程在设计流程、解决策略、技术措施等方面提供参考和借鉴。

关键词：地铁车站合建上盖物业

低碳Al_2O_3-C耐火材料研究的新进展

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耐火材料 2017年第3期51卷 235-240页

作者：马世春韩俊华中冶赛迪集团有限公司重庆400013

介绍了近年来国内外低碳Al_2O_3-C耐火材料的研究现状。主要包括:碳源(纳米炭黑、纳米碳管、膨胀石墨、超细微晶石墨)的选用,防氧化剂(Al-Si复合粉、Al-Zn复合粉、硼化物)的优化,氧化物粉体的添加以及催化剂的改性等,均对低碳Al_2O_3-C... 详细信息

介绍了近年来国内外低碳Al_2O_3-C耐火材料的研究现状。主要包括:碳源(纳米炭黑、纳米碳管、膨胀石墨、超细微晶石墨)的选用,防氧化剂(Al-Si复合粉、Al-Zn复合粉、硼化物)的优化,氧化物粉体的添加以及催化剂的改性等,均对低碳Al_2O_3-C耐火材料的性能改善起到一定的作用。

关键词：低碳Al2O3-C耐火材料纳米碳源防氧化剂催化剂改性

Reinforcement Learning-Based Electric Vehicles Energy Management Strategy with Battery Thermal Model

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Journal of Donghua University(English Edition) 2023年第1期40卷 80-87页

作者：黄淦曹童杰韩俊华赵萍张光林 College of Information Science and Technology Donghua UniversityShanghai 201620China China Information Technology Designing&Consulting Destitute Co. Ltd.Beijing 100048China Zhengyuan Geomatics Group Co. Ltd.Beijing 101300China

The promotion of electric vehicles(EVs)is restricted due to their short cruising *** is desirable to design an effective energy management strategy to improve their energy *** existing work concerning energy management strategies focused on hybrids rather than the *** work focusing on the energy management strategy for EVs mainly uses the traditional optimization strategies,thereby limiting the advantages of energy *** this end,a novel energy management strategy that considered the impact of battery thermal effects was proposed with the help of reinforcement *** main idea was to first analyze the energy flow path of EVs,further formulize the energy management as an optimization problem,and finally propose an online strategy based on reinforcement learning to obtain the optimal ***,extensive simulation results have demonstrated that our strategy reduces energy consumption by at least 27.4%compared to the existing methods.

关键词： energy management electric vehicle(EV) reinforcement learning battery thermal management

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国内外婴幼儿辅助食品法规概况及技术指标比较研究

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食品科学技术学报 2019年第3期37卷 105-110页

作者：屈鹏峰邓陶陶韩军花国家食品安全风险评估中心

婴幼儿辅助食品是婴幼儿重要的营养素来源之一,各国均制定相应标准、法规对其进行管理。概述了国际食品法典委员会和主要发达国家、地区的婴幼儿辅助食品法规标准,比较了它们与中国婴幼儿辅助食品标准的异同点,包括标准立法机构、适用... 详细信息

婴幼儿辅助食品是婴幼儿重要的营养素来源之一,各国均制定相应标准、法规对其进行管理。概述了国际食品法典委员会和主要发达国家、地区的婴幼儿辅助食品法规标准,比较了它们与中国婴幼儿辅助食品标准的异同点,包括标准立法机构、适用范围、法规效力、产品类别、原料要求、营养成分、污染物限量等内容,并对这些异同点进行了分析,以期对我国婴幼儿辅助食品标准的修订提供依据。

关键词：婴幼儿辅助食品标准技术指标比较