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Effect of pyrite content on chalcopyrite flotation under different regrinding conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 49-57页

作者： Zejun Wang Qing shi Guofan Zhang Yuxuan zhu Binbin Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China

This study aimed to investigate the effect of varying pyrite(Py)content on copper(Cu)in the presence of different regrinding conditions,which were altered using different types of grinding media:iron,ceramic balls,and their mixture,followed by flotation in the cleaner *** flotation performance of rough Cu concentrate can be improved by changing the regrinding conditions based on the Py *** electron microscopy,X-ray spectrometry,ethylenediaminetetraacetic acid disodium salt extraction,and X-ray photoelectron spectroscopy studies illustrated that when the Py content was high,the use of iron media in regrinding promoted the generation of hydrophilic Fe OOH on the surface of Py and improved the Cu *** ceramic medium with a low Py content prevented excessive Fe OOH from covering the surface of chalcopyrite(Cpy).Electrochemical studies further showed that the galvanic corrosion current of Cpy-Py increased with the addition of Py and became stronger with the participation of iron media.

关键词： chalcopyrite regrinding media pyrite galvanic corrosion flotation

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具有跨邻居传播能力的信息辐射模型研究

物理学报 2017年第3期66卷 355-364页

作者：汪筱阳王瑛朱参世朱琳傅超琦空军工程大学装备管理与安全工程学院西安710051 西京学院信息工程学院西安710123

针对大多数信息传播的研究均只考虑邻居的问题,本文提出了一个具有跨邻居传播能力的信息辐射模型.该模型结合复杂网络理论、平均场理论和辐射理论,建立了以物理层为网络结构基础、以辐射层为信息传播环境、以状态层为辐射状态统计的三... 详细信息

针对大多数信息传播的研究均只考虑邻居的问题,本文提出了一个具有跨邻居传播能力的信息辐射模型.该模型结合复杂网络理论、平均场理论和辐射理论,建立了以物理层为网络结构基础、以辐射层为信息传播环境、以状态层为辐射状态统计的三层信息辐射网络模型.通过定义节点状态之间的转换规则和相关网络统计量,引入辐射范围和辐射衰减量,分析了辐射机理并推导了辐射阈值表达式.在不同的复杂网络中,利用数值仿真验证了理论分析的正确性和模型的有效性,分析了节点之间的状态转换概率和辐射衰减量对信息辐射的影响规律.

关键词：传播能力信息辐射复杂网络辐射阈值

Wafer‑Scale Ag_(2)S‑Based Memristive Crossbar Arrays with Ultra‑Low Switching‑Energies Reaching Biological Synapses

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Nano-Micro Letters 2025年第3期17卷 328-339页

作者： Yuan zhu Tomas Nyberg Leif Nyholm Daniel Primetzhofer Xun shi Zhen Zhang Division of Solid‑State Electronics Department of Electrical EngineeringUppsala University75121 UppsalaSweden Department of Chemistry Uppsala UniversityUppsalaSweden Department of Physics and Astronomy Uppsala UniversityUppsalaSweden State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China

Memristive crossbar arrays(MCAs)offer parallel data storage and processing for energy-efficient neuromorphic ***,most wafer-scale MCAs that are compatible with complementary metal-oxide-semiconductor(CMOS)technology still suffer from substantially larger energy consumption than biological synapses,due to the slow kinetics of forming conductive paths inside the memristive *** we report wafer-scale Ag_(2)S-based MCAs realized using CMOS-compatible processes at temperatures below 160℃.Ag_(2)S electrolytes supply highly mobile Ag+ions,and provide the Ag/Ag_(2)S interface with low silver nucleation barrier to form silver filaments at low energy *** further enhancing Ag+migration in Ag_(2)S electrolytes via microstructure modulation,the integrated memristors exhibit a record low threshold of approximately−0.1 V,and demonstrate ultra-low switching-energies reaching femtojoule values as observed in biological *** low-temperature process also enables MCA integration on polyimide substrates for applications in flexible ***,the intrinsic nonidealities of the memristive units for deep learning can be compensated by employing an advanced training *** impressive accuracy of 92.6%in image recognition simulations is demonstrated with the MCAs after the *** demonstrated MCAs provide a promising device option for neuromorphic computing with ultra-high energy-efficiency.

关键词： Wafer-scale Ag_(2)S films Reactive sputter Silver nucleation Ag^(+)migration Energy-efficient neuromorphic computing

Thermophysical Properties for Environmental-Friendly Refrigerants of Trifluoroiodomethane and Difluoromethane

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Science Foundation in China 2002年第1期10卷 32-36页

作者： DuanYuanyuan zhu Mingshan shi lin HanLizhong(Department of Thermal Engineering, Tsinghua University, Beijing 100084)

We investigate thermophysical properties of environmental -friendly refrigerants of trifluo-roiodomethane and difluoromethane in detail. The progress of measurement techniques for thermophysical properties of fluids i... 详细信息

关键词： trifluoroiodomethane difluoromethane thermophysical properties

具零阶耗散的双成分Camassa-Holm方程的整体解和爆破现象

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数学杂志 2017年第1期37卷 152-168页

作者：朱师师臧林恩云南师范大学数学学院云南昆明650500

本文研究了具零阶耗散的双成分Camassa-Holm方程的Cauchy问题.由Kato定理得到局部适定性的结果,然后研究了解的整体存在性和爆破现象.

关键词：双成分Camassa-Holm方程零阶耗散局部适定性爆破整体存在性

夸克模型中的D_(sj)~*(2317),D_(sj)(2460)衰变(英文)

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高能物理与核物理 2006年第11期30卷 1041-1047页

作者：王丰林陈晓林卢大海朱世琳邓卫真北京大学物理学院北京100871

用夸克模型结合Ds,D*s,讨论窄共振态D*sj(2317),Dsj(2460)．除η-π0混合角由D*s衰变宽度给出,所有的参数均取自Godfrey和Isgur的夸克模型．得到的电磁衰变宽度与实验数据和其他作者的结果相一致．但是,与现有的实验结果比较,D*sj(2317)... 详细信息

用夸克模型结合Ds,D*s,讨论窄共振态D*sj(2317),Dsj(2460)．除η-π0混合角由D*s衰变宽度给出,所有的参数均取自Godfrey和Isgur的夸克模型．得到的电磁衰变宽度与实验数据和其他作者的结果相一致．但是,与现有的实验结果比较,D*sj(2317),Dsj(2460)的π介子衰变宽度要小一个数量级．我们怀疑简单的手征夸克-π轴矢相互作用的哈密顿量不适合于D*sj(2317),Dsj(2460)的强衰变。

关键词：夸克模型窄共振态衰变宽度

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao Yu-Gui Peng Peng Wu Zong-lin Li Xue-Feng zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states