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Crustal magma oxidation state and endowments in porphyry copper deposits

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Science China Earth Sciences 2025年第1期68卷 226-236页

作者： Yumin ai Massimo CHIARADIA Chao WU Huayong chen Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Earth Sciences University of Geneva Guangdong Provincial Key Laboratory of Mineral Physics and Materials

Porphyry copper deposits（PCDs） supply the majority of the world's copper（Cu） as well as significant amounts of molybdenum（Mo） and gold（Au）. The formation of these deposits is controlled by a variety of geological factors, among which the magmatic oxidation is one of the focuses of current research. This study investigates the redox characteristics of arc magmas by analyzing the ratio of vanadium（V） to scandium（Sc） and its correlation with the oxygen fugacity （fO2） of magmas from arcs of various crustal thicknesses globally. We compiled an extensive dataset of published V/Sc values and studied the partition coefficients of Vand Sc between minerals and silicate melts across various magmatic environments. The results demonstrate that fractional crystallization of magnetite markedly reduces V/Sc values of the residual melt. Furthermore, magnesium number（Mg#） at the onset of magnetite fractionation is strongly positively correlated with fO2of the equilibrium magma. Based on this,the oxidation of arc magmas from different crustal thicknesses can be evaluated. The result suggests that magmas generated in crusts thicker than 20 km tend to be more oxidized with increasing crust thickness. This trend is attributed to enhanced intracrustal differentiation processes involving garnet and amphibole, particularly in mature island and continental arcs. In contrast,magmas in thinner arc crusts（<20 km）, which are significantly influenced by subducted slab materials, display higher oxidation states than most of their thicker crust counterparts. These findings suggest that both subduction dynamics and crustal thickness play a vital role in determining the oxidation state of arc magmas and, consequently, their capacity to generate PCDs. Highly oxidized, primitive arc magmas are less favorable for PCD formation due to that they tend to experience magnetite fractionation and thus sulfide saturation in the early stage of magma evolution, a process leading to copper depletion. On the contra

关键词： Magma evolution V/Sc systematics Magnetite Oxygen fugacity Porphyry copper deposits

Product Family Design Methodology Using Object-Oriented Approach

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厦门大学学报（自然科学版） 2002年第S1期41卷 141-142页

作者： WANG ai-min, MENG ming-chen, HUANG Jing-yuan (Department. of Precision Instruments and Mechanology, Tsinghua Univers ity, Beijing 100084, China)

The serious competition environment of global marke t requests the enterprise to change traditional product development strategy and a dopt new theory in order to meet diverse customer needs while maintaining near m ass production efficiency, which is the main philosophy of mass customization. P roduct family design is research focus at present and also is the core technolog y of DFMC (design for mass customization). Firstly, this paper explores the fund amental issues of product family, such as concepts of modularity, commonality/di versity, product platform and product family architecture etc. We compare the te rminology between product family and object-oriented approach in the next step. Thirdly, this paper puts forwards one product family design methodology based o n product platform and under different phase of product life cycle constrains, f or example, functional, assembly and service etc. At the end section of this pap er, we applied, the object-oriented approach in above mentioned product family design methodology to realize the design process. In one word, this paper propos ed one product family design methodology based on object oriented approach and p roduct life cycle consideration, especially the conjointness of characteristic o f OOA and concepts of product family. The main property of OOA are encapsulation , inherence and polymorphism. Encapsulation can represent the module or building blocks of product family. Inherence can be extended to describe the modularity and commonality, and also be used to construct variant space. Alternative specif ic of product family architecture can be embodied with polymorphism. And fin aly, we give the future work contents. In order to derive the product platform a nd achieve modularity and commonality/diversity, interface management between bu ilding block is necessary. The question is how the OOA can be applied in interfa ce management to get our aim OOA is the basis of many information management sy stem, then th

关键词： product family design product platform object- oriented approach (OOA) product life cycle

Long-term Prognosis of Patients with Acute non-ST-segment Elevation Myocardial Infarction undergoing Different Treatment Strategies

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Chinese Medical Journal 2015年第8期128卷 1026-1031页

作者： Bo Zhang Da-Peng Shen Xu-chen Zhou Jun Liu Rong-Chong Huang Yan-E Wang ai-ming chen Ye-Ran Zhu Hao Zhu Department of Cardiology First Affiliated Hospital of Dalian Medical University Dalian Liaoning 116011 China Department of Cardiology Fuxin Center Hospital Fuxin Liaoning 123000 China Department of Cardiology Dalian Jinzhou First People's Hospital Dalian Liaoning 116100 China

Background： In cardiology, it is controversial whether different therapy strategies influence prognosis after acute coronary syndrome. We examined and compared the long-term outcomes of invasive and conservative strategies in patients with non-ST-segment elevation myocardial infarction （NSTEMI） and characterized the patients selected for an invasive approach. Methods： A total of 976 patients with acute NSTEMI were collected from December 2006 to October 2012 in the First Affiliated Hospital of Dalian Medical University Hospital. They are divided into conservative strategy （586 patients） and invasive strategy （390 patients） group. Unified tbllow-up questionnaire was performed by telephone contact （cut-off date was November, 2013）. The long-term clinical events were analyzed and related to the different treatment strategies. Results： The median follow-up time was 29 months. Mortality was 28.7% （n = 168） in the conservative group and 2.1% （n = 8） in the invasive management at long-term clinical follow-up. The secondary endpoint （the composite endpoint） was 59.0% （n = 346） in the conservative group and 30.3% （n = 118） in the invasive management. Multivariate analysis showed that patients in the conservative group had higher all-cause mortality rates than those who had the invasive management （adjusted risk ratio [RR] = 7.795; 95% confidence interval [CI]： 3.796 16.006, P 〈 0.001）, and the similar result was also seen in tile secondary endpoint （adjusted RR ： 2.102; 95% （7： 1.694-2.610, P 〈 0.001 ）. In the subgroup analysis according to each Thrombolysis in Myocardial Infarction risk score （TRS）, log-rank analysis showed lower mortality and secondary endpoint rates in the invasive group with the intermediate and high-risk patients （TRS 3-7）. Conclusions： An invasive strategy could improve long-term outcomes for NSTEMI patients, especially for intermediate and high-risk ones （TRS 3- 7）.

关键词： lnvasive Strategy Long-term Outcome Non-ST-segment Elevation Myocardial Infarction Thrombolysis in Myocardia Infarction Risk Score

大学生视屏终端暴露时间与视屏终端相关眼病相关性分析

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国际眼科杂志 2013年第9期13卷 1866-1868页

作者：赵晓静陈艾明靳光明李勤中山大学附属第五医院中国广东省珠海市519000

目的:探讨大学生视屏终端(visual display terminal,VDT)暴露时间与视屏终端相关眼病的相关性。方法:对珠海市3所高校1218名在校本科生进行问卷调查,了解视屏终端暴露时间、眼部症状评分,对不同年级学生视屏终端暴露时间及不同暴露强度... 详细信息

目的:探讨大学生视屏终端(visual display terminal,VDT)暴露时间与视屏终端相关眼病的相关性。方法:对珠海市3所高校1218名在校本科生进行问卷调查,了解视屏终端暴露时间、眼部症状评分,对不同年级学生视屏终端暴露时间及不同暴露强度人群眼部症状评分进行比较,并对视屏终端暴露时间与眼部症状评分进行相关性分析。结果:3所高校本科生视屏终端暴露时间平均为3.72±2.17h,随着年级的增长,视屏终端暴露时间延长,暴露时间越长,眼部症状越明显,视屏终端相关眼病与视屏终端暴露时间具有正相关性。结论:长时间视屏终端暴露不利于眼健康。应加强对大学生的眼保健教育,避免或减少视屏终端暴露带来的健康损失。

关键词：大学生视屏终端眼部症状

Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan cheng Jianxun Liu Yuhan ai Yaqin Li Zhihui Feng Qiong Zhang Shaolong Gong Yong chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

色氨酸羟化酶基因与青年人自杀未遂的关联研究

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重庆医科大学学报 2017年第5期42卷 554-559页

作者：王我冉柳毅艾明陈建梅靳佳佳刘微况利重庆医科大学附属大学城医院心理卫生中心重庆401331 重庆医科大学附属第一医院心理卫生中心重庆400016

目的:探讨色氨酸羟化酶1(tryptophan hyroxylase 1,TPH1)基因多态性和色氨酸羟化酶2(tryptophan hyroxylase 2,TPH2)基因多态性与青年人自杀未遂行为的关系。方法:采用i MLDRTM多重SNP分型技术对102例青年自杀未遂者(自杀未遂组)和112... 详细信息

目的:探讨色氨酸羟化酶1(tryptophan hyroxylase 1,TPH1)基因多态性和色氨酸羟化酶2(tryptophan hyroxylase 2,TPH2)基因多态性与青年人自杀未遂行为的关系。方法:采用i MLDRTM多重SNP分型技术对102例青年自杀未遂者(自杀未遂组)和112名青年健康对照(对照组)TPH1基因多态性位点rs1800532、rs211105、rs4537731、rs684302、rs7933505和TPH2基因多态性位点rs10748185、rs11178997、rs1386493、rs1843809、rs4448731、rs7305115、rs9325202进行基因分型,并对基因型、等位基因、单体型频率进行比较。结果:(1)单位点分析显示:以上12个多态性位点基因型及等位基因频率分布在自杀未遂组与对照组之间差异无统计学意义(P>0.05);(2)单体型分析显示:由TPH1基因5个位点组成的单体型G-G-C-C-G、G-G-T-T-G、G-TC-C-G、G-T-T-C-G、T-T-T-T-A频率在自杀未遂组和对照组间差异无统计学意义(P>0.05);由TPH2基因7个位点组成的单体型G-T-G-T-T-A-G频率在自杀未遂组和对照组间差异有统计学意义(χ2=10.034,P=0.002),经Bonferroni校正检验后,差异仍有统计学意义(P=0.024)。结论:TPH2基因7个SNP位点构成的单体型G-T-G-T-T-A-G可能与增加青年人的自杀未遂相关。

关键词：色氨酸羟化酶基因1 色氨酸羟化酶基因2 青年人自杀未遂

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真菌性角膜炎预后影响因素分析

国际眼科杂志 2013年第2期13卷 306-308页

作者：李斌辉靳光明赵晓静陈艾明朱星梅李勤中山大学附属第五医院眼科中国广东省珠海市519000 中山大学附属第五医院药学部中国广东省珠海市519000 中山大学附属第五医院皮肤科中国广东省珠海市519000

目的:分析影响真菌性角膜炎预后的相关因素,为真菌性角膜炎治疗决策提供依据。方法:选择我院诊治的105例105眼真菌性角膜炎患者,通过评估临床体征、实验室检查及治疗情况等对真菌性角膜炎的预后影响因素进行统计分析。结果:选取105眼中4... 详细信息

目的:分析影响真菌性角膜炎预后的相关因素,为真菌性角膜炎治疗决策提供依据。方法:选择我院诊治的105例105眼真菌性角膜炎患者,通过评估临床体征、实验室检查及治疗情况等对真菌性角膜炎的预后影响因素进行统计分析。结果:选取105眼中49眼药物治疗治愈(46.7%);30眼(28.6%)药物治疗有效,上皮延迟愈合,26眼(24.8%)治疗失败。结论:抗真菌治疗开始于症状出现7d以后、初诊病灶浸润面积>16mm2、前房积脓>2mm、菌种鉴定为镰孢菌的真菌性角膜炎患者药物治疗预后较差。

关键词：真菌性角膜炎预后影响因素

Echo-dynamographic analysis of left ventricular filling flow by vector flow mapping:a new approach for evaluation of left ventricular diastolic function

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Echo-dynamographic analysis of left ventricular filling flow...

Accelerating leaching of copper ore with surfactant and the analysis of reaction kinetics

第二届长三角超声医学论坛暨2009年浙江省超声医学学术年会

作者： Department of Ultrasound and Function,East Hospital Affiliated to Tongji University Shanghai 200120,China ai-yu MIAO ming chen Yi LIU Bo ZHANG Yu-hui ZHANG Jian-hua ZHENG Jin-kang HUANG Sheng-lin LIU Jing MA

Objective Inflow pattern of echo-dynamographic in left ventricle(LV) during left ventricular diastolic dysfunction was investigated by Vector Flow Mapping(VFM).Accuracy of LV inflow fluid-dynamic changes in assessment...

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International Journal of Minerals,Metallurgy and Materials 2019年第3期26卷 274-281页

作者： Chun-ming ai Ping-ping Sun ai-xiang Wu Xun chen Chao Liu College of Safety Science and Engineering Liaoning Technical University Key Laboratory of Ministry of Education of China for Efficient Mining and Safety of Metal Mines University of Science and Technology Beijing Wanbao Mining Limited

To solve the problem of low permeability and lower extraction rates of high-mud ores, a surfactant was added as a penetrant to the pregnant leaching solution during column leaching tests. On the basis of the theories of physical chemistry and seepage flow mechanics, the mechanism by which seepage is enhanced under the effects of the surfactant was analyzed. The results show that the action modes of the surfactant were divided into four aspects: changing the wettability of the ore, reducing the viscosity of the leaching solution, adsorbing onto the surface of ore, and enhancing the permeability effect. The findings of column leaching tests demonstrated that permeability was substantially improved by the surfactant. In the later period of leaching, the permeability coefficient was two times higher than that of the control group. Meanwhile, the ore extraction rate increased by approximately 10%. During the leaching process, the surface tension of the solution did not substantially change, and that of the solution with surfactant increased slightly. The kinetics analysis of ore column leaching illustrated that the leaching processes were controlled by both internal diffusion(principal factor) and chemical reaction.

关键词： surfactant permeability reaction kinetics leaching