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Open Journal of Applied Sciences 2023年第8期13卷 1348-1362页

作者： xiaoqiang guan Haibin Li Zhiyong Tan Xubin Wu Wei Zhang Chinalco Research Institute of Science and Technology Co. Ltd. Beijing China Chinalco Intelligent Tongchuang Technology (Yunnan) Co. Ltd. Kunming China

Located in Shangri-La county, Yunnan Province, China’s biggest underground nonferrous mine Pulang Copper Mine is under construction. To date, the defined copper reserves at the Pulang Copper Mine are 4.8 million tonnes of copper and an average grade of 0.34%. The mineralized zone is 2300 m long, 600 - 800 m wide, and 1000 m high in a dome shape. The first-stage mining and processing capacity is 12.5 million tonnes of ore per year. By geotechnical investigation, ore haulage is adopted via a drift and ore pass development system. From mineralogical analysis, a majority of the Pulang copper ore body is classified as a type III rock, which is generally considered to be suitable for block-caving methods. As an update to the traditional mine-to-mill approach, a cave-to-mill integrated production concept is then introduced. This is essentially the integration of underground mine production scheduling and monitoring with surface mineral processing management based on fragment size and geometallurgical ore characteristics. Several unique challenges experienced during the project design and construction, as well as a number of features aimed at mitigating these problems, are also discussed in this paper.

关键词： Block Caving Cave to Mill Geometallurgy Lithology Sensors

Tennantite and Enargite Rejection in the Copper Flotation—A Mini-Review

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Journal of Minerals and Materials Characterization and Engineering 2023年第3期11卷 63-68页

作者： Shiqing Zhou Tengfei Li Chao Wang Zhiyong Tan xiaoqiang guan Haibin Li Wei Zhang Chinalco Research Institute of Science and Technology Co. Ltd. Beijing China Kunming Metallurgical Research Institute Co. Ltd. Beijing Branch Beijing China Yunnan Copper Industry Co. Ltd. Kunming China Chinalco Intelligent Tongchuang Technology (Yunnan) Co. Ltd. Kunming China

With the development of arsenic removal technologies, biological method and sulfide method have been applied in industrial fields, other methods have also been applied in arsenic-containing copper flotation, including coagulation process, ion exchange method, direct precipitation method and so on. In the paper, a short review on the progress of arsenic removal technologies of copper flotation during the last decade is presented, and the importance and the trend of arsenic removal are discussed. The existing and possible strategies of improving copper recovery in porphyry copper ores and rejection of penalty elements such as Tennantite and Enargite in copper flotation concentrates are also presented.

关键词： Tennantite Enargite Mineralogy Analysis Characterization

65 t无人驾驶电机车气电混合制动模式研究

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矿业研究与开发 2020年第2期40卷 134-137页

作者：管孝强云南迪庆有色金属有限责任公司

针对电机车传统纯机械制动方式对制动设备损伤大、故障率高的问题,以国内井下水平运输最大吨位65t电机车为研究对象,提出了电机车气电混合制动模式。通过对防打滑控制的研究,实现了由电制动和空气制动协调匹配输出制动功能,并在65t无人... 详细信息

针对电机车传统纯机械制动方式对制动设备损伤大、故障率高的问题,以国内井下水平运输最大吨位65t电机车为研究对象,提出了电机车气电混合制动模式。通过对防打滑控制的研究,实现了由电制动和空气制动协调匹配输出制动功能,并在65t无人驾驶电机车上进行试验。试验结果表明,在气电混合制动下,电机车机械制动相关结构和设备受力强度得到降低,电机车机械闸瓦、制动盘的维修成本分别降低了80%、50%,制动机械传动机维护时间减少了80%,既提升了工作效率,又解决了大吨位无人驾驶电机车的制动控制难题,有效降低了设备的故障率,实现了安全平稳制动的目标。

关键词：无人驾驶气电混合制动电机车制动控制系统防滑控制

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基于空间变换的随机森林算法

计算机研究与发展 2021年第11期58卷 2485-2499页

作者：关晓蔷王文剑庞继芳孟银凤山西大学计算机与信息技术学院太原030006 计算智能与中文信息处理教育部重点实验室(山西大学) 太原030006 山西大学数学科学学院太原030006

随机森林是机器学习领域中一种常用的分类算法,具有适用范围广且不易过拟合等优点.为了提高随机森林处理多分类问题的能力,提出一种基于空间变换的随机森林算法(space transformation based random forest algorithm,ST-RF).首先,给出... 详细信息

随机森林是机器学习领域中一种常用的分类算法,具有适用范围广且不易过拟合等优点.为了提高随机森林处理多分类问题的能力,提出一种基于空间变换的随机森林算法(space transformation based random forest algorithm,ST-RF).首先,给出一种考虑优先类别的线性判别分析方法(priority class based linear discriminant analysis,PCLDA),利用针对优先类别的投影矩阵对样本进行空间变换,以增强优先类别样本与其他类别样本的区分效果.进而,将PCLDA方法引入随机森林构建过程中,在为每棵决策树随机选择一个优先类别保证随机森林多样性的基础上,利用PCLDA方法创建侧重于不同优先类别的决策树,以提高单棵决策树的分类准确性,从而实现集成模型整体分类性能的有效提升.最后,在10个标准数据集上对ST-RF算法与7种典型随机森林算法进行比较分析,验证所提算法的有效性,并将基于PCLDA的空间变换策略应用到对比算法中,对改进前后的算法性能进行比较分析.实验结果表明:ST-RF算法在处理多分类问题方面具有明显优势,所提出的空间变换策略具有较强的普适性,可以显著提升原算法的分类性能.

关键词：随机森林优先类别线性判别分析空间变换决策树

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江西弋阳曹溪制碱用灰岩地质特征及找矿方向

现代矿业 2024年第2期40卷 63-66,71页

作者：关小强中国建筑材料工业地质勘查中心江西总队江西省上饶市334000

为支撑中国精细化高端制碱产业对矿产原料的需求,在曹溪矿区开展深部钻探和地表槽探等工作,查明矿区范围内制碱用灰岩矿体特征及空间分布,以分析矿床成因。通过分析勘查成果,发现矿床属稳定的沉积型化学碳酸盐型矿床,沉积环境处于低碱... 详细信息

为支撑中国精细化高端制碱产业对矿产原料的需求,在曹溪矿区开展深部钻探和地表槽探等工作,查明矿区范围内制碱用灰岩矿体特征及空间分布,以分析矿床成因。通过分析勘查成果,发现矿床属稳定的沉积型化学碳酸盐型矿床,沉积环境处于低碱低能的浅海开阔台地环境,含矿构造为平缓向斜,矿体形态及空间展布随二叠系下统马平组地层分布,优质矿石主要为灰色巨厚层状微晶灰岩和生物碎屑灰岩。将岩石学特征作为首要的找矿要素,马平组地层作为主要的找矿标志层,为曹溪至盘岭一带找矿提供指导。

关键词：制碱用灰岩控矿因素矿床成因地层标志

Enhancing insights into Global Cancer Statistics 2022: implications for cancer control

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Science China Life Sciences 2025年第1期 294-296页

作者： Jingtong Xu Runtian Wang Xiaoxiang guan Department of Oncology the First Affiliated Hospital of Nanjing Medical University Jiangsu Key Lab of Cancer Biomarkers Prevention and TreatmentCollaborative Innovation Center for Personalized Cancer MedicineNanjing Medical University

Globally, there has been a marked escalation in tumor morbidity and mortality,cementing tumors as the predominant cause of death in numerous *** the current tumor burden across various regions is imperative to discern potential risk factors and formulate efficacious strategies for tumor ***, the International Agency for Research on Cancer(IARC) provided a status report on the global tumor burden,estimating the incidence and mortality of 36 cancers in 185 countries(Bray et al.,2024).

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大情字井地区青山口组二段Ⅳ砂组和Ⅴ砂组沉积微相研究

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石油物探 2010年第1期49卷 68-71,78页

作者：张玉王雅春关晓强林晓海彩彩大庆石油学院地球科学学院黑龙江大庆163318 中国石油天然气股份有限公司吉林油田分公司勘探开发研究院吉林松原138000

从区域地质背景出发,通过岩心观察、粒度分析、重矿物和测井曲线等资料的综合分析,对吉林大情字井地区青山口组二段Ⅳ砂组和Ⅴ砂组的沉积背景、物源方向和沉积特征进行了研究,确定其主要为三角洲前缘一前三角洲沉积体系,主要发育了水下... 详细信息

从区域地质背景出发,通过岩心观察、粒度分析、重矿物和测井曲线等资料的综合分析,对吉林大情字井地区青山口组二段Ⅳ砂组和Ⅴ砂组的沉积背景、物源方向和沉积特征进行了研究,确定其主要为三角洲前缘一前三角洲沉积体系,主要发育了水下分支河道、河口坝、远砂坝和重力流等沉积微相,储油砂体以水下分支河道、河口坝微相为主。编制了Ⅳ砂组和Ⅴ砂组10个小层的沉积微相平面分布图,对砂体的演化规律进行了分析,认为沉积环境为以西南保康水系为主的三角洲前缘相沉积,砂体以水下分支河道和河口坝为主,其中水下分支河道砂体呈南西一北东向展布,向东逐渐减薄,河道的侧向摆动造成了砂体的叠置或切割,形成了条带状和断续分布特征。

关键词：大情字井地区白垩系青山口组二段砂组沉积微相分析三角洲前缘砂体展布特征

核电站一回路冷却剂中Ag-110m去除方法的研究

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辐射防护通讯 2023年第3期43卷 26-29页

作者：王伟关晓强孔祥超阳江核电有限公司广东阳江529941

Ag-110m是一种活化腐蚀产物,国内外多个核电站的一回路系统中出现了Ag-110m的污染,对辐射水平的贡献非常大。本文对Ag-110m的特性、在冷却剂中的形态、影响、来源等方面进行了分析,并收集和归纳了国内电站Ag-110m的处理措施,为核电站中A... 详细信息

Ag-110m是一种活化腐蚀产物,国内外多个核电站的一回路系统中出现了Ag-110m的污染,对辐射水平的贡献非常大。本文对Ag-110m的特性、在冷却剂中的形态、影响、来源等方面进行了分析,并收集和归纳了国内电站Ag-110m的处理措施,为核电站中Ag-110m的去除提供了一些思路和方法。

关键词：核电站银 Ag-110m 去除

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Decreased levels of phosphorylated synuclein in plasma are correlated with poststroke cognitive impairment

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Neural Regeneration Research 2025年第9期20卷 2598-2610页

作者： Yi Wang Yuning Li Yakun Gu Wei Ma Yuying guan Mengyuan Guo Qianqian Shao Xunming Ji Jia Liu Department of Clinical Laboratory Beijing Bo’ai HospitalChina Rehabilitation Research CenterCapital Medical UniversityBeijingChina Beijing Institute of Brain Disorders Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Advanced Innovation Center for Big Data-based Precision MedicineCapital Medical UniversityBeijingChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina

Poststro ke cognitive impairment is a major secondary effect of ischemic stroke in many patients;however,few options are available for the early diagnosis and treatment of this *** aims of this study were to(1)determine the specific relationship between hypoxic andα-synuclein during the occur of poststroke cognitive impairment and(2)assess whether the serum phosphorylatedα-synuclein level can be used as a biomarker for poststro ke cognitive *** found that the phosphorylatedα-synuclein level was significantly increased and showed pathological aggregation around the cerebral infa rct area in a mouse model of ischemic *** addition,neuronalα-synuclein phosphorylation and aggregation were observed in the brain tissue of mice subjected to chronic hypoxia,suggesting that hypoxia is the underlying cause ofα-synuclein-mediated pathology in the brains of mice with ischemic *** phosphorylatedα-synuclein levels in patients with ischemic stroke were significantly lower than those in healt hy subjects,and were positively correlated with cognition levels in patients with ischemic ***,a decrease in serum high-density lipoprotein levels in stroke patie nts was significantly correlated with a decrease in phosphorylatedα-synuclein *** ischemic stroke mice did not show significant cognitive impairment or disrupted lipid metabolism 14 days after injury,some of them exhibited decreased cognitive function and reduced phosphorylatedα-synuclein *** together,our results suggest that serum phosphorylatedα-synuclein is a potential biomarker for poststroke cognitive impairment.

关键词： biomarker high-density lipoprotein ischemic stroke phosphorylatedα-synuclein poststroke cognitive impairment

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某核电厂辐射安全文化有形化建设经验总结

辐射防护通讯 2023年第3期43卷 13-16页

作者：张文贤关晓强邹之利阳江核电有限公司安全防护部广东阳江529941

基于国内某核电厂辐射安全文化调查结果,根据辐射安全文化特征及调查得出的实际弱项,从认知、认同、践行三个层次提出核电厂辐射安全文化有形化建设的思路和建议。

关键词：辐射安全文化认知认同践行有形化建设

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