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Mineral Geochemistry of Apatite in the Jiama PorphyrySkarn Deposit,Tibet and its Geological Significance

Acta Geologica Sinica(English Edition) 2024年第2期98卷 399-415页

作者： YANG Yang tang Juxing ZHANG Zebin tang Pan XIE Fuwei RAN Fengqin YANG Zongyao YANG huaichao BAI Yun SUN Miao QI Jing School of Earth Sciences Chengdu University of TechnologyChengdu 610059China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesCAGSBeijing 100037China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China The Key Laboratory of the Ministry of Education on Solid Waste Treatment and Recycling School of Environment and ResourceSouthwest University of Science and TechnologyMianyangSichuan 621010China Chengdu Surveying Geotechnical Research Institute Co. Ltd.of MCCChengdu 610023China Sichuan Tianfu Mining Investment Co. Ltd.Chengdu 610055China Sichuan Institute of Comprehensive Geological Survey Chengdu 610081China

The Jiama deposit,a significant porphyry-skarn-type copper polymetallic deposit located within the Gangdese metallogenic belt in Tibet,China,exemplifies a typical porphyry metallogenic ***,the mineral chemistry of its accessory minerals remains under-examined,posing challenges for resource assessment and ore *** electron microprobe analysis and LA-ICP-MS analysis,this study investigated the geochemical characteristics of apatite in ore-bearing granite and monzogranite porphyries,as well as granodiorite,quartz diorite,and dark diorite porphyries in the *** also delved into the diagenetic and metallogenic information from these geochemical *** findings include:(1)The SiO_(2) content,rare earth element(REE)contents,and REE partition coefficients of apatite indicate that the dark diorite porphyry possibly does not share a cogenetic magma source with the other four types of porphyries;(2)the volatile F and Cl contents in apatite,along with their ratio,indicate the Jiama deposit,formed in a collisional setting,demonstrates lower Cl/F ratios in apatite than the same type of deposits formed in a subduction environment;(3)compared to non-ore-bearing rock bodies in other deposits formed in a collisional setting,apatite in the Jiama deposit exhibits lower Ce and Ga *** might indicate that rock bodies in the Jiama deposit have higher oxygen ***,the marginal variation in oxygen fugacity between ore-bearing and non-ore-bearing rock bodies within the deposit suggests oxygen fugacity may not serve as the decisive factor in the ore-hosting potential of rock bodies in the Jiama deposit.

关键词： apatite metallogenesis mineral geochemistry porphyry Jiama Tibet

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Adjusting Na doping via wet-chemical synthesis to enhance thermoelectric properties of polycrystalline SnS

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Science China Materials 2019年第7期62卷 1005-1012页

作者： huaichao tang Jin-Feng Dong Fu-Hua Sun Pengpeng Shang Jing-Feng Li State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China College of Chemistry and Materials Science Shandong Agricultural University Taian 271018 China

Tin sulfide (SnS) has analogous structural features to tin selenide (SnSe), but contains more abundant resources as compared with SnSe. SnS has elicited attention as a potential eco-friendly therm oelectric (TE) material. However, the intrinsic carrier concentration of SnS is very low, thereby hindering the performance improvement of the material. This study proposes that the TE properties of polycrystalline Nadoped SnS (synthesized through an improved chemical coprecipitation) can be significantly enhanced. The maximum power factor (PF) of 362 μW m^-1K^-2 at 873 K was achieved, presenting a state-of-the-art value for the polycrystalline SnS. Considering the merits of the improved electrical properties and lower thermal conductivity of SnS, the highest ZT was up to 0.52 at 873 K even without intentional chemical doping. This study offers an effective approach for improving the PF to achieve high ZT in SnS. Hence, we expect that this new perspective can be extended to other dopants and broaden the scope of synthesis technology.

关键词： SnS rapid preparation Na doping therm oelectric

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Enhanced thermoelectric performance of Cu_(12)Sb_4S_(13-δ) tetrahedrite via nickel doping

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Science China Materials 2018年第9期61卷 1209-1217页

作者： Fu-Hua Sun Jinfeng Dong Shaugath Dey Asfandiyar Chao-Feng Wu Yu Pan huaichao tang Jing-Feng Li State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Engineering University of New South WalesNSW 2052Australia Advanced Materials Institute Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China

Cu12Sb4S13 tetrahedrite has received great attention as an earth-abundant and environmental-friendly thermoelectric material. This work aims to uncover the thermoelectric performance-enhancing effect and the mechanism of nickel doping on tetrahedrite. A series of Cu12-xNixSb4S13-δ（x = 0.5, 0.7, 1.0, 1.5 and 2.0） compounds were synthesized by mechanical alloying combined with spark plasma sintering. It is found that the thermal conductivity sharply reduces with increasing Ni content over the entire temperature range,0.9 W m^-1K^-1, accompanied with an enhanced thermoelectric power factor. The model predicted that the reduced lattice thermal conductivity is attributed to mid-frequency phonon scattering, caused by precipitates and dislocations resulting from Ni doping. Consequently, a high ZT value up to 0.95 at 723 K was achieved for Cu11NiSb4S13-δ, corresponding to a ~46% increase over non-doped Cu12Sb4S13-δ. Furthermore,the cyclic measurement showed that the Ni-doped tetrahedrites displayed high chemical stability.

关键词： nickel doping tetrahedrite thermoelectric

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Highly Textured N-Type SnSe Polycrystals with Enhanced Thermoelectric Performance

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Research 2019年第1期2019卷 251-260页

作者： Peng-Peng Shang Jinfeng Dong Jun Pei Fu-Hua Sun Yu Pan huaichao tang Bo-Ping Zhang Li-Dong Zhao Jing-Feng Li State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China College of Chemistry and Material Science Shandong Agricultural UniversityTai’an 271018China The Beijing Municipal Key Laboratory of New Energy Materials and Technologies School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Thermoelectric materials,which directly convert heat into electricity based on the Seebeck effects,have long been investigated for use in semiconductor refrigeration or waste heat *** them,SnSe has attracted significant attention due to its promising performance in both p-type and n-type crystals;in particular,a higher out-of-plane ZT value could be achieved in ntype SnSe due to its 3D charge and 2D phonon *** this work,the thermoelectric transport properties of n-type polycrystalline SnSe were investigated with an emphasis on the out-of-plane transport through producing textural *** textures were fabricated using mechanical alloying and repeated spark plasma sintering(SPS),as a kind of hot pressing,aimed at producing strong anisotropic transports in n-type polycrystalline SnSe as that in crystalline *** show that the lowest thermal conductivity of 0.36 Wm^(-1) K^(-1) was obtained at 783 K in perpendicular to texture ***,the electrical transport properties are less anisotropic and even nearly isotropic,and the power factors reach 681.3μWm^(-1) K^(-2) at 783 K along both parallel and perpendicular *** combination of large isotropic power factor and low anisotropic thermal conductivity leads to a maximum ZT of 1.5 at 783 *** high performance elucidates the outstanding electrical and thermal transport behaviors in n-type polycrystalline SnSe,and a higher thermoelectric performance can be expected with future optimizing texture in n-type polycrystalline SnSe.

关键词： alloying polycrystalline anisotropic

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基于广义纳什议价的V2V能量交易研究

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电力系统保护与控制 2023年第15期51卷 144-154页

作者：余岳文怀超刘郁唐继孟湖南工业大学轨道交通学院湖南株洲412000

为解决大量电动汽车(electric vehicle,EV)接入电网或微电网产生额外负荷冲击的问题,提出了一种基于广义纳什议价(generalized Nash Bargaining,GNB)理论的电动汽车交易模型。在市场中选择将配电网络(distribution network,DN)运营商作... 详细信息

为解决大量电动汽车(electric vehicle,EV)接入电网或微电网产生额外负荷冲击的问题,提出了一种基于广义纳什议价(generalized Nash Bargaining,GNB)理论的电动汽车交易模型。在市场中选择将配电网络(distribution network,DN)运营商作为代理,并在配电网络中安装变压器和并联电容器。DN运营商可通过变压器和电容器上的有载分接开关来管理网络上的电压和无功功率(voltage and reactive power,Volt-VAR)。同时,市场中允许两种交易方式,一种是EV直接与DN进行交易,另一种是电动汽车之间以点对点(peer to peer,P2P)的方式进行能源交易。最后,将GNB问题分为两个子问题,即社会福利最大化问题(P1)和能源交易问题(P2),通过调用遗传算法对P1和P2进行求解。结果表明,加入Volt-VAR后,社会福利得到了增加,参与市场的各个代理也获得更公平的利润分配。所提出的模型促进了电动汽车之间的能量交易,降低了电动汽车无序充电对电网的冲击。

关键词：广义纳什议价能量交易网络约束电动汽车 V2V

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制造业与高技术服务业融合对制造业结构高级化的影响--基于2009—2018年面板数据的分析

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管理现代化 2021年第4期41卷 17-21页

作者：田晓煜陈怀超立辉唐婉欣太原理工大学经济管理学院山西太原030024

从产业融合视角出发,实证分析了制造业与高技术服务业融合对制造业结构高级化的影响,以及创新能力和人力资本水平的调节作用。研究发现,制造业与高技术服务业融合有利于推动制造业结构向高级形态转变;创新能力和人力资本水平均能增强制... 详细信息

从产业融合视角出发,实证分析了制造业与高技术服务业融合对制造业结构高级化的影响,以及创新能力和人力资本水平的调节作用。研究发现,制造业与高技术服务业融合有利于推动制造业结构向高级形态转变;创新能力和人力资本水平均能增强制造业与高技术服务业融合对制造业结构高级化的积极影响,发挥了正向调节作用。

关键词：制造业高技术服务业产业融合制造业结构高级化

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低硅含量钨尾矿制备蒸压加气混凝土的研究

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水泥工程 2023年第6期 86-90页

作者：黄海智丁梦茜李怀超陈楷良唐振中华润水泥技术研发有限公司广东广州510460

探索了使用低硅含量钨尾矿替代石英砂生产蒸压加气混凝土的可行性,得出了钨尾矿生产蒸压加气混凝土的最佳配合比。所制得的蒸压加气混凝土平均密度为643 kg/m^(3),平均抗压强度为4.5 MPa,符合标准GB/T 11968—2020中A3.5,B06级蒸压加气... 详细信息

探索了使用低硅含量钨尾矿替代石英砂生产蒸压加气混凝土的可行性,得出了钨尾矿生产蒸压加气混凝土的最佳配合比。所制得的蒸压加气混凝土平均密度为643 kg/m^(3),平均抗压强度为4.5 MPa,符合标准GB/T 11968—2020中A3.5,B06级蒸压加气混凝土合格品的要求。同时,对钨尾矿蒸压加气混凝土的微观结构分析表明,当铝含量较高时,会形成铝代托贝莫来石晶体,起到补强作用。

关键词：钨尾矿蒸压加气混凝土铝代托贝莫来石

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