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EVAPORATION RATE OF SnS FROM SLAGS

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Acta Metallurgica Sinica(English Letters) 1992年第10期5卷 235-239页

作者： hua yixin liu chunpeng Kunming Institute of Technology,Kunming,China

Under inert atmospheres and 1473 K,the evaporation rate of SnS from SnO-FeO- SiO_2 and SnO-FeO-CaO-SiO_2 slags mixed with FeS was investigated by measuring the weight Ioss and composition of *** experimental results show that dur- ing sulfide fuming process the evaporation of SnOfrom slags is negligible in comparison with that of *** of CaOto slags can enhance the evaporation rate of *** differential rate equation of evaporation may be expressed as: -d(%Sn)/dt=k(%Sn)(%S) where,the apparent rate constant k was found to be 4.20×10^(-3) for SnO-FeO-CaO- SiO_2 system and 2.88×10^(-3) for SnO-FeO-SiO_2 system,respectively.

关键词： SnS slag evaporation rate fuming

MICROWAVE-ASSISTED CARBOTHERMIC REDUCTION OF ILMENITE

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Acta Metallurgica Sinica(English Letters) 1996年第3期9卷 164-170页

作者： hua yixin and liu chunpeng(Department of Metallurgy, Kunming University of Science and Technology, Kunming 650093, China)

The microwave-assisted carbothermic reduction of ilmenite was investigated by thermogravimetric analysis under argon atmosphere. A comparison between microwave assisted reduction and the conventional one was made. It was demonstrated that the instantaneously volumetric heating of microwaves could significantly enhance the overall reduction process. By microwave application, the reduction could take place at much lower temperatures and the activation energy for the process could be *** mechanism of the reduction was discussed according to the experimental data.

关键词： microwave carbothermic reduction ilmenite

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性发育异常患者性腺分化临床病理学分析

中华病理学杂志 2024年第2期53卷 162-167页

作者：金华刘振华丁怡鑫李琳胡海刘爱军解放军总医院第七医学中心病理科北京100700 齐齐哈尔医学院临床医学系齐齐哈尔161006

目的探讨性发育异常患者性腺的病理形态学特点及其鉴别诊断。方法收集解放军总医院第七医学中心2007年4月至2021年7月临床诊断为两性畸形且在本院病理科有性腺活检的病例,复阅全部活检病理切片,从中筛选出性腺病理形态学异常的病例。分... 详细信息

目的探讨性发育异常患者性腺的病理形态学特点及其鉴别诊断。方法收集解放军总医院第七医学中心2007年4月至2021年7月临床诊断为两性畸形且在本院病理科有性腺活检的病例,复阅全部活检病理切片,从中筛选出性腺病理形态学异常的病例。分析其临床和影像学资料及核型等,补充免疫组织化学检查并复习相关文献。结果镜下观察筛选出卵睾型性发育异常7例,病理特征是同一个体同时有卵巢和睾丸分化;患者年龄均小于15岁,社会性别男女比例为2∶5;临床表现均为外生殖器外观异常;B超检查发现女性患儿均有睾丸样物,男性患儿均有隐睾;46,XX核型最多。筛选出未分化性腺组织及条索状性腺各1例。未分化性腺组织生殖细胞既不在曲细精管中也不在卵泡中,而是随机分布在卵巢型间质背景中,有时伴有未成熟的性索。条索状性腺类似于无生殖细胞的未分化性腺组织。免疫组织化学FOXL2在粒层细胞阳性表达,支持细胞阴性;SOX9表达与之相反;OCT4在卵母细胞弱阳性/阴性表达,在未分化性腺组织中生殖细胞核阳性表达。结论性腺活检需明确4种分化模式:卵巢分化、睾丸分化、未分化性腺组织及条索状性腺。SOX9阳性提示睾丸分化,FOXL2阳性证实卵巢分化,同一组织内两者都有表达则是卵睾分化。鉴别出未分化性腺组织非常重要,因未分化性腺组织将来发展为性腺母细胞瘤概率高。

关键词：染色体免疫组织化学卵睾型性发育异常

HEATING RATE OF MINERALS AND COMPOUNDS IN MICROWAVE FIELD

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Transactions of Nonferrous Metals Society of China 1996年第1期6卷 35-40页

作者： hua Yixiru liu chunpeng Department oj Metallurgy Kimming University of Science and Technology、Kunming 650093

More than 40 kinds of selected minerals and compounds were individually irradiated by microwaves under an inert atmosphere,and the temperatures of samples were measured with a metal-sheathed thermocouple inserted into the samples *** results indicated that most sulphide and some oxide minerals and compounds could be heated to high temperatures in a short timet whereas the common gangue minerals,some oxide and oxy-salt minerals or compounds could *** sulphide minerals had faster heating rate than the oxide minerals containing the same *** impurities of minerals had significant effect on the heating *** selective heating characteristics of microwaves on different minerals and compounds could be attributed to the differences between their conductivities or dielectric loss factors and bonding properties.

关键词： microwave heating minerals and compounds mineral processing extractive metallurgy

交叉与重叠:基于政策文本分析的红色档案认定研究

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档案与建设 2024年第4期 60-66页

作者：邵华刘益欣吴亿玮刘恋苏州大学社会学院江苏苏州215123

文章选取25份和红色档案相关的省级政策文本作为研究对象,从红色档案概念界定、认定机制、认定程序、认定级别、认定标准五个维度探究不同省级行政单位在红色档案认定政策制定方面的异同,发现我国在红色档案认定方面存在政策制定不足、... 详细信息

文章选取25份和红色档案相关的省级政策文本作为研究对象,从红色档案概念界定、认定机制、认定程序、认定级别、认定标准五个维度探究不同省级行政单位在红色档案认定政策制定方面的异同,发现我国在红色档案认定方面存在政策制定不足、概念界定不清晰、具体规范有待细化与完善、跨领域协作稍显薄弱的问题,据此提出明确红色档案认定实质、扩大并深化红色档案与红色资源研究、深化红色档案认定政策制定与实施、组建红色档案认定专家团队的改善建议。

关键词：红色档案红色档案认定文本分析

Mathematical Model for Copper Converter Control by Means of SO_2—B—τMethod

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昆明理工大学学报（自然科学版） 1989年第4期30卷 30-35页

作者： liu chunpeng hua yixin (Department of Metallurgy)

By measuring the volume concentration of SO2 produced,blow rate of air（m3/min）Band converting times τ,the mathematical model of converting for oxidizing FeS and Cu2S,and that of controlling end point can be developed according to the slag making period andcopper making period,*** derived model may be well suitable for either sideblow or top blow converter if the parameters-SO2B,τ.can be measured accurately.

关键词： converting Converter Method oxidizing converter blowing dissolved minute oxidized toward

Methodological challenges to human medical study

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Frontiers of Medicine 2014年第3期8卷 328-336页

作者： yixin Zhong Baoyan liu hua Qu Qi Xie Beijing University of Posts and Telecommunications Beijing 100876 China China Academy of Traditional Chinese Medicine Beijing 100700 China

With the transformation of modern medicinal pattern, medical studies are contronted with methodological challenges. By analyzing two methodologies existing in the study of physical matter system and information system, the article points out that traditional Chinese medicine （TCM）, especially the treatment based on syndrome differentiation, embodies information conception of methodological positions, while western medicine represents matter conception of methodological positions. It proposes a new way of thinking about combination of TCM and western medicine by combinating two kinds of methodological methods.

关键词： medical paradigm traditional Chinese medicine western medicine scientific view scientific methodology

Garnet/polymer hybrid ion-conducting protective layer for stable lithium metal anode

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Nano Research 2017年第12期10卷 4256-4265页

作者： chunpeng Yang Boyang liu Feng Jiang Ying Zhang hua Xie Emily Hitz Liangbing Hu Department of Materials Science and Engineering University of Maryland College Park Maryland 20742 USA

Rechargeable Li metal batteries using Li metal anodes have attracted worldwide interest because of their high energy density. The critical barriers limiting their commercial application include uncontrolled dendritic Li growth and the unstable Li-electrolyte interface. Considerable efforts have been directed towards solving these problems, e.g., modifying the electrolyte, creating artificial interfacial layers for the Li metal, and constructing three-dimensional structures for the Li metal. However, stabilizing the Li metal interface remains challenging because of the highly reactive nature of the Li metal. In this study, we utilize a Li-ion conducting hybrid film comprising a garnet-type ion conductor and a poly（ethylene oxide）-based polymer electrolyte as a protective layer to stabilize the Li-electrolyte interface and mitigate the growth of Li dendrites. The hybrid ion-conducting layer can block Li dendrites from proliferating and accommodate Li volume expansion because of its robust mechanical properties. Moreover, the ion-conducting layer allows Li deposition only underneath it, rather than on the surface, functioning as a permanent protective layer to ensure the stability of the Li metal over a long cycling life. The dendrite-inhibiting effect of the ion-conducting protective layer is visually evidenced by in situ microscopy using planar batteries. The protective Li metal anode exhibits excellent cycling stability and low voltage hysteresis （-15 mV at 0.2 mA-cm-2） for a cycle life as long as 1,000 h. It also shows a high Coulombic efficiency （-99.5%） in a full cell against a LiFePO4 cathode, exhibiting promise for application in Li metal batteries. Our results imply that the ion-conducting protective layer markedly improves the metal anode, yielding safe, long-life, and high-energy-density batteries.

关键词： Li metal battery Li dendrites garnet solid-state electrolyte interface protection ion-conductingmembrane

A Method of Road Data Aided Inertial Navigation by Using Learning to Rank and ICCP Algorithm

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Journal of Geodesy and Geoinformation Science 2021年第4期4卷 84-96页

作者： Xiang LI yixin hua Wenbing liu Institute of Geospatial Information Information Engineering UniversityZhengzhou 450001China Army Logistics University of PLA Chongqing 401311China

As an independent navigation method,inertial navigation system(INS)has played a huge advantage in a lot of special *** its positioning error will accumulate with time,so it is difficult to work independently for a long *** vehicle loaded with the inertial navigation system usually drives on the road,so the high precision road data based on geographic information system(GIS)can be used as a bind of auxiliary information,which could correct INS errors by the correlation matching *** existing road matching methods rely on mathematical models,mostly for global positioning system(GPS)trajectory data,and are limited to model ***,based on the features of inertial navigation trajectory and road,this paper proposes a road data aided vehicle inertial navigation method based on the learning to rank and iterative closest contour point(ICCP)***,according to the geometric and directional features of inertial navigation trajectory and road,the combined feature vector is constructed as the input value;Furthermore,the scoring function and RankNet neural network based on the features of vehicle trajectory data and road data are constructed,which can learn and extract the features;Then,the nearest point of each track point and its corresponding road data set to be matched is *** average translation between the two data sets is calculated by using the position relationship between each group of track points to be matched and road points;Finally,the trajectory data set is iteratively translated according to the translation amount,and the matching track point set is obtained when the trajectory error converges to complete the *** experiments,it is compared with other algorithms including the hidden Markov model(HMM)matching *** experimental results show that the algorithm can effectively suppress the divergence of trajectory *** matching accuracy is close to HMM algorithm,and the computational ef

关键词： ICCP algorithm vehicle trajectory data features road matching pairwise learning