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Risk factors for renal outcomes in children with antineutrophil cytoplasmic antibody-associated vasculitis:a nationwide retrospective study in China

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World Journal of Pediatrics 2024年第5期20卷 506-516页

作者： Li-Wen Tan jun-Li Wan Chun-Hua Zhu Hong Xu Zheng-Kun Xia Li-Zhi Chen Xiao-Chuan Wu fang Wang Xiao-Rong liu cheng-Guang Zhao Xiao-Zhong Li Jian-Hua mao Xiao-Wen Wang Wen-Yan Huang Yu-Hong Li Jian-jiang zhang shi-Pin Feng jun yang Jiao-Jiao liu Chun-Lin Gao Li-Ping Rong Lan-jun Shuai Ke Xu He-Jia zhang Qiu Li Ai-Hua zhang Mo Wang Department of Nephrology Children’s Hospital of Chongqing Medical UniversityZhongshan 2nd Rd.136Chongqing400014China Ministry of Education Key Laboratory of Child Development and Disorders National Clinical Research Center for Child Health and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChildren’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Pediatrics Children’s Hospital of Chongqing Medical UniversityChongqingChina Department of Nephrology Children’s Hospital of Nanjing Medical University72 Guangzhou RoadNanjing210008China Department of Nephrology Children’s Hospital of Fudan UniversityNational Paediatric Medical Center of ChinaShanghaiChina Department of Pediatrics Jinling HospitalNanjing Medical UniversityNanjingChina Department of Pediatrics Jinling HospitalThe First School of Clinical MedicineSouthern Medical UniversityNanjingChina Department of Pediatrics Jinling HospitalMedical School of Nanjing UniversityNanjingChina Department of Pediatric Nephrology and Rheumatology The First Affiliated Hospital of Sun Yat-Sen UniversityGuangzhouChina Department of Pediatrics The Second Xiangya Hospital of Central South UniversityChangshaChina Department of Pediatrics Peking University First HospitalBeijingChina Department of Nephrology Beijing Children’s HospitalCapital Medical UniversityBeijing100045China National Center for Children’s Health BeijingChina Department of Pediatrics Shengjing Hospital of China Medical UniversityShenyangChina Department of Nephrology and Immunology Children’s Hospital of Soochow UniversitySuzhouChina Department of Nephrology Children HospitalZhejiang University School of MedicineHangzhouChina Department of Nephrology Wuhan Children’s Hospital(Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science&TechnologyWuhanChina Department of Nephrology and Rheumatology Shanghai Children’s HospitalSchool

Background Pediatric antineutrophil cytoplasmic antibody-associated vasculitis(AAV)is a life-threatening systemic vasculitis featured by liability to renal ***,there are few studies on the risk factors and predictive models for renal outcomes of AAV in *** data from 179 AAV children in multiple centers between January 2012 and March 2020 were collected *** risk factors and predictive model of end-stage renal disease(ESRD)in AAV were *** Renal involvement was the most typical manifestation(95.5%),and the crescent was the predominant pathological lesion(84.9%).The estimated glomerular filtration rate(eGFR)was evaluated in 114 patients,of whom 59.6%developed ESRD,and the median time to ESRD was 3.20 *** eGFR[P=0.006,odds ratio(OR)=0.955,95%confidence interval(CI)=0.924–0.987]and the percentages of global glomerulosclerosis(pGGS;P=0.018,OR=1.060,95%CI=1.010–1.112)were independent risk factors for ESRD of renal *** on the pGGS and eGFR at renal biopsy,we developed three risk grades of ESRD and one predictive *** Kaplan‒Meier curve indicated that renal outcomes were significantly different in different risk grades(P<0.001).Compared with serum creatinine at baseline,the predictive model had higher accuracy(0.86 versus 0.58,P<0.001)and a lower coefficient of variation(0.07 versus 0.92)in external *** Renal involvement is the most common manifestation of pediatric AAV in China,of which more than half deteriorates into *** predictive model based on eGFR at renal biopsy and the pGGS may be stable and accurate in speculating the risk of ESRD in AAV children.

关键词： Antineutrophil cytoplasmic antibody End-stage renal disease Glomerulonephritis Pediatric nephrology Vasculitis

Review on monitoring and prevention technologies of splashing induced by inappropriate slag foaming in BOF

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Journal of Iron and Steel Research(International) 2023年第9期30卷 1661-1674页

作者： Rui-fang Wang Bo zhang cheng-jun liu mao-fa jiang Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education) Northeastern UniversityShenyang 110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030Inner MongoliaChina

Basic oxygen steelmaking(BOS)is the most frequently used method to produce molten steel,which is being developed to meet the requirements of being safe,efficient,clean,and *** the BOS process,splashing events cause undesirable consequences,such as casualties,low efficiency,environmental pollution,and uncontrollable *** causes of three types of splashing(eruptive,foaming,and metallic splashing)were unraveled and it is concluded that inappropriate foaming is the root cause of splashing.A variety of monitoring techniques for splashing have been developed to measure real-time slag foaming in a basic oxygen furnace(BOF).The audiometry technique with flexible operation and high accuracy was comprehensively introduced with a practical *** on the formation mechanisms,the countermeasures for the three types of splashing were proposed to regulate slag foaming in a BOF by integrating diverse measures in terms of raw materials,slag forming,blowing pattern,and the use of splashing regulating *** work should emphasise an automatic action for these prevention measures in response to the splashing risk from the monitoring technology,promoting the progress of intelligent steelmaking.

关键词： Steelmaking Splashing Slag foaming Monitoring Prevention

Effects of Different Oxidants on HCl-based Pickling Process of 430 Stainless Steel

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Journal of Iron and Steel Research(International) 2016年第8期23卷 778-783页

作者： Qiong XIE pei-yang shi cheng-jun liu mao-fa jiang Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education Northeastern University

To shorten the time required for the pickling process and to enhance the quality of ferritic stainless steel plates,the effects of oxidants including hydrogen peroxide（H2O2）,potassium permanganate（KMnO4）,and potassium chlorate（KClO3）on the pickling behavior in HCl-based electrolyte as well as the surface quality of hot-rolled and blasted 430 stainless steel（430-SS）were *** were conducted using mass-loss tests,microstructure analyses,potentiodynamic polarization curves,and electrochemical impedance spectroscopy *** results showed that the addition of oxidants substantially accelerated the pickling process of 430-SS by enhancing the cathodic reaction rate and reducing the charge transfer *** electrolytes comprising 5-8mass% HCl at a temperature of 40-60 ℃ and at the same concentration within the range from 0to 2mass%,H2O2 was demonstrated to be superior to KMnO4 and KClO3in accelerating the pickling *** surface quality of 430-SS pickled in the presence of H2O2 was better than those of specimens pickled in the presence of KMnO4 and KClO3 when the removal of the oxide layer,intergranular corrosion,and surface roughness were collectively *** 1mass% H2O2 was added,the mass loss rate of 430-SS was increased by 629%and no residual oxide layer or intergranular corrosion was observed on the surface of the steel;in addition,the roughness was only 1.7μm.H2O2 was determined to be a better oxidant than KMnO4 and KClO3 when the pickling process,surface quality,solution recycling,and environment protection were considered as a whole.

关键词： roughness cathodic electrolyte impedance stainless potassium recycling oxidant accelerating immersed

Corrosion Behavior of S450EW Low-alloy Weathering Steel in Cyclically Alternate Corrosion Environments

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Journal of Iron and Steel Research(International) 2015年第11期22卷 1020-1023页

作者： jun-shan WANG pei-yang shi cheng-jun liu mao-fa jiang Key Laboratory of Ecological Metallurgy of Multimetallic Mineral Northeastern University Ansteel Group Co. Ltd.

Weathering steel is widely used in various fields due to its excellent mechanical properties and high corrosion resistance. The effect of chromium content on the S450 EW weathering steel in cyclic immersion test was studied. The results indicated that the corrosion resistance of S450 EW weathering steel is closely related to chromium content. The addition of chromium significantly inhibited the weathering steel corrosion. The corrosion rate of experimental steel after 96 h immersion was 1.101 g·m-2·h-1. The rust of S450 EW weathering steel was mainly constituted of Fe OOH and Fe3O4 phase, and the elevation of chromium content promoted the formation of α-Fe OOH. The fine precipitates of the two phases contributed to the formation of dense dust layer of test steel. Furthermore, the increase of chromium is beneficial for the cure of original defects and cracks of the rust layer via the enrichment of chromium. The corrosion potential and the resistance of corrosion process were thus increased, protecting the experimental steel from further corrosion. A S450 EW steel with corrosion resistance more than 1.5 times of Q450NQR1 steel was prepared.

关键词： weathering steel cyclic immersion test rust structure chromium corrosion resistance

Sulfuric acid leaching kinetics of South African chromite

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International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 233-240页

作者： Qing Zhao cheng-jun liu pei-yang shi Bo zhang mao-fa jiang Qing-song zhang Ron Zevenhoven Henrik Saxén Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education) Northeastern University Thermal and Flow Engineering Laboratory bo Akademi University

The sulfuric acid leaching kinetics of South African chromite was investigated. The negative influence of a solid product layer constituted of a silicon-rich phase and chromium-rich sulfate was eliminated by crushing the chromite and by selecting proper leaching con- ditions. The dimensionless change in specific surface area and the conversion rate of the chromite were observed to exhibit a proportional re- lationship. A modified shrinking particle model was developed to account for the change in reactive surface area, and the model was fitted to experimental data. The resulting model was observed to describe experimental findings very well. Kinetics analysis revealed that the leach- ing process is controlled by a chemical reaction under the employed experimental conditions and the activation energy of the reaction is 48 ***-1.

关键词： chromite ore treatment sulfuric acid leaching kinetics physical models

Descaling Behavior of 430 Hot-rolled Stainless Steel in HCl-based Solution

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Journal of Iron and Steel Research(International) 2016年第3期23卷 190-196页

作者： Ying-ying YUE cheng-jun liu pei-yang shi mao-fa jiang Li-yan QIN Guang-wei faN School of Materials and Metallurgy Northeastern University Shanxi Taigang Stainless Steel Co. Ltd.

Descaling of hot-rolled stainless steel is generally implemented through pickling process in HNO_3-HF mixed acids,which induces severe environmental concerns of nitrogen oxide（NOx）gases and *** to the electrochemical measurement,the mass loss test and the appearance analysis,a new pickling process which employed HCl-based solution was proposed and evaluated to provide theoretical basis for the development of environment-friendly and highly effective pickling *** the experimental condition,the HCl-based solution can compete with ordinary HNO_3-HF mixed acids in terms of pickling efficiency,surface integrity and the removal of Crdepleted *** descaling process of 430hot-rolled stainless steel in the HCl-based solution consisted of three *** descaling solution penetrated the oxide scales into the underlying metal,dissolving the Cr-depleted layer and part of *** oxide scales peeled off from the stainless steel and a polished and smooth surface was *** descaled stainless steel was dissolved uniformly in the HCl-based solution;therefore,the pickling duration was vital for desired surface *** the static condition,the appropriate descaling time of 430 hotrolled stainless steel in HCl-based solution was 400 s.

关键词： descaling hot-rolled ferritic stainless steel pickling electrochemistry

Inclusions and solidification structures of high pure ferritic stainless steels dual stabilized by niobium and titanium

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Rare Metals 2014年第6期33卷 761-766页

作者： Hong-Po Wang Li-Feng Sun jun-Jie shi cheng-jun liu mao-fa jiang Chi zhang Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education) Northeastern University

As the raw materials in the post process of rolling and heat treatment, ingots have great effects on the properties of the final products. Inclusions and solidification structures are the most important aspects of the quality of ingots. Niobium and titanium are usually used to react with carbon and nitrogen to improve the properties of ferritic stainless steels. In this research, combined with thermodynamic calculation, effects of niobium and titanium on the inclusions and solidification structures in three kinds of high pure ferritic stainless steels with different titanium additions were investigated by optical microscope（OM）, scanning electron microscope（SEM）, transmission electron microscope（TEM）, and energy disperse spectrometer（EDS）. Results show that Al2O3 and a few（Nb,Ti）N particles form when titanium addition is 0.01 %.Furthermore, inclusions are mainly Ti N and Al2O3–Ti Ox–Ti N duplex inclusions when titanium addition is more than0.10 %. Those two types of inclusions are in well distribution, and can afford nuclei to the solidification ***, the ratio of equiaxed zone increases with the increase of titanium addition. The ratio increases from42.1 % to 64.0 % with the titanium addition increasing from 0.01 % to 0.10 %, and it increases to 85.7 % when the titanium addition reaches 0.34 %.

关键词： High pure ferritic stainless steel Inclusion Solidification structure Equiaxed zone Stabilization element

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深圳市新生儿脑卒中多中心现况调查

中国当代儿科杂志 2024年第5期26卷 450-455页

作者：时莉秀冯晋兴韦艳芳路欣茹张雨茜杨林颖何胜男陈佩娟韩静陈诚涂惠英余章斌黄进洁曾淑娟陈晚铃刘颖郭燕平毛姣玉李晓东张谦慎谢治利黄梅英晏昆山应尔雅陈俊王艳荣刘亚萍宋波刘华艳肖晓冬唐红王宇娜蔡茵莎龙琦许汉强王会战孙倩韩芳张瑞彪杨传忠窦蕾时会菊王瑞蒋萍无深圳市儿童医院新生儿科广东深圳518034 深圳市宝安区妇幼保健院新生儿科广东深圳518101 深圳市龙岗区妇幼保健院/汕头大学医学院龙岗妇幼临床学院新生儿科广东深圳518172 深圳市人民医院/暨南大学第二临床医学院/南方科技大学第一附属医院新生儿科广东深圳518020 深圳市龙岗中心医院/广州中医药大学深圳临床医学院新生儿科广东深圳518116 北京大学深圳医院新生儿科广东深圳518036 华中科技大学协和深圳医院新生儿科广东深圳518052 香港大学深圳医院新生儿科广东深圳518053 深圳市龙岗区人民医院新生儿科广东深圳518172 深圳市南山区妇幼保健院新生儿科广东深圳518067 深圳市第三人民医院新生儿科广东深圳518112 深圳市龙华区中心医院新生儿科广东深圳518110 深圳市盐田区人民医院新生儿科广东深圳518081 深圳远东妇产医院新生儿科广东深圳518002 深圳市第二人民医院新生儿科广东深圳518025 陆丰市人民医院新生儿科广东陆丰516500 惠阳三和医院新生儿科广东惠州518200 惠州市第三人民医院新生儿科广东惠州516100 深圳市妇幼保健院新生儿科广东深圳518028 南方科技大学医院新生儿科广东深圳518055 深圳市罗湖区人民医院新生儿科广东深圳518005 深圳新生儿数据协作网

目的总结深圳市新生儿脑卒中发病率、临床特征及预后等情况,提高脑卒中新生儿的早期诊治能力。方法由深圳市儿童医院牵头,收集2020年1月—2022年12月深圳新生儿数据协作网组织21家单位收治的新生儿脑卒中36例,分析深圳市新生儿脑卒中发... 详细信息

目的总结深圳市新生儿脑卒中发病率、临床特征及预后等情况,提高脑卒中新生儿的早期诊治能力。方法由深圳市儿童医院牵头,收集2020年1月—2022年12月深圳新生儿数据协作网组织21家单位收治的新生儿脑卒中36例,分析深圳市新生儿脑卒中发病率、临床特征、治疗、预后等情况。结果深圳市21家医院2020、2021、2022年新生儿脑卒中的发病率分别为1/15137、1/6060、1/7704。缺血性脑卒中占75%(27/36),男性患儿占64%(23/36)。86%(31/36)的患儿在生后3d内起病,53%(19/36)以惊厥起病。颅脑影像学结果显示,22例(61%)大脑左侧发生梗死,13例(36%)基底节梗死;12例完成磁共振血管成像检查,9例(75%)累及大脑中动脉。29例患儿完成脑电图检查,21例(72%)出现尖波,10例(34%)出现电发作。不同医院对症支持治疗不同。12例(33%)完善新生儿行为神经测定评分,平均得分(32±4)分。共随访27例患儿12月龄左右的预后情况,44%(12/27)的患儿预后良好。结论新生儿脑卒中主要为缺血性脑卒中,多以惊厥为首发症状,多累及大脑中动脉,脑电图多出现尖波,神经发育评分较低,以对症支持治疗为主,部分患儿预后不良。

关键词：脑卒中多中心研究新生儿

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稀土氧化物对结晶器保护渣理化性质的影响

东北大学学报（自然科学版） 2005年第11期26卷 1082-1085页

作者：王德永姜茂发刘承军史培阳东北大学材料与冶金学院辽宁沈阳110004

针对在结晶器喂稀土过程中,稀土的氧化产物进入保护渣熔融层,影响和限制了保护渣冶金性能发挥的主要问题,系统测定了稀土氧化物对结晶器保护渣熔化温度、黏度和结晶温度的影响.结果表明,随稀土氧化物含量增加,保护渣熔化温度、黏度和结... 详细信息

针对在结晶器喂稀土过程中,稀土的氧化产物进入保护渣熔融层,影响和限制了保护渣冶金性能发挥的主要问题,系统测定了稀土氧化物对结晶器保护渣熔化温度、黏度和结晶温度的影响.结果表明,随稀土氧化物含量增加,保护渣熔化温度、黏度和结晶温度显著升高.保护渣中添加少量B2O3和Li2O作为新的助熔剂使用,可以显著削弱稀土氧化物对保护渣理化性能的影响.进而可以为开发成分和性能更为合理的新型稀土钢结晶器保护渣提供理论依据.

关键词：稀土钢连铸稀土氧化物结晶器保护渣理化性质