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Enhanced recovery of zinc and lead by slag composition optimization in rotary kiln

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Transactions of Nonferrous Metals Society of China 2022年第9期32卷 3110-3122页

作者： hong-fu lin Wei WENG Shui-ping Zhong Guan-zhou QIU School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores Zijin Mining Group Co.Ltd.Shanghang 364200China Zijin School of Geology and Mining Fuzhou UniversityFuzhou 350108China

High-efficiency recovery of Zn and Pb from silicon-rich zinc leaching residues is realized in a rotary *** by means of XRD,SEM,EDS and ICP reveal that the leaching residue contains 12.4 wt.%SiO_(2),16.1 wt.%Zn,and 7.4 wt.%*** analysis shows that metallic vapor of Zn and Pb can be easily generated from the zinc leaching residue at 1150-1250°C inside the rotary *** and melting points of 13 slag compositions were analyzed and three slag compositions(47wt.%SiO_(2)-23wt.%CaO-30wt.%FeO,40wt.%SiO_(2)-28wt.%CaO-32wt.%FeO,and 40wt.%SiO_(2)-30wt.%CaO-30wt.%FeO)possessed the desirable physical properties,with the melting point and viscosity in the range of 1150-1280°C and 0.2-0.5 Pa·s,*** industrial tests show that adopting the optimized slag composition can contribute to very high recovery rates of Zn and Pb(97.3%for Zn and 94.5%for Pb),corresponding to slags with very low average contents of Zn and Pb(0.51 wt.%Zn and 0.45 wt.%Pb).The National-Standard leaching tests of the water-quenched slags result in 1.82 mg/L Zn,~0.01 mg/L Cu,0.0004 mg/L As,~0.01 mg/L Cd,0.08 mg/L Pb,and~0.02 mg/L Hg in the leachate,verifying the detoxification of the zinc leaching residue at the same time.

关键词： zinc leaching residues metals recovery rotary kiln slag composition optimization detoxification

Controlling reversible complexation-mediated polymerization(RCMP)via deep eutectic solvents:fast kinetics,narrow molecular weight distribution and mechanistic insights

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Science China Chemistry 2024年第8期67卷 2728-2736页

作者： Xin fu Zhen Lu Shen Li Zheng-hong Luo lin-Xi Hou Department of Materials-Oriented Chemical Engineering College of Chemical EngineeringFuzhou UniversityFuzhou 350116China Department of Chemical Engineering School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200030China Chemical Engineering Zhicheng College of Fuzhou UniversityFuzhou 350116China Qingyuan Innovation Laboratory Quanzhou 362801China

The exploitation of new green polymerization avenues for the effective synthesis of polymers by reversible-deactivation radical polymerization plays a critical role in pursuing the development of polymeric *** this work,serials of deep eutectic solvents(DES)with intermolecular-hydrogen-bonding interaction were constructed as catalysts and medium for actuating reversible complexation-mediated polymerization(RCMP)for the first time,yielding methacrylate polymers with high monomer conversion and narrow dispersion molecular weight in both water and oil *** mechanism and elementary reaction of RCMP were explored deeply,revealing that the complexation of initiator with DES to generate radicals was a ratecontrolling step and intermolecular-hydrogen-bond was primary factor to influence polymerization ***,the insights of density functional theory calculations revealed that negative electrostatic potential ensured nucleophilic *** investigation demonstrated the considerable potential of DES for RCMP,which is anticipated for other polymerization applications as a novel medium mode.

关键词： deep eutectic solvent reversible complexation-mediated polymerization intermolecular hydrogen bonding density functional theory elementary reaction steps

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基于生成对抗网络的维语场景文字修改网络

计算机与现代化 2024年第1期 41-46页

作者：付鸿林张太红杨雅婷艾孜麦提·艾瓦尼尔马博新疆农业大学计算机与信息工程学院新疆农业信息化工程技术研究中心中国科学院新疆理化技术研究所多语种信息技术研究室

通过对维语的场景文字检测与识别研究发现，人工采集标注自然场景文字图像是耗时耗力的，因此人工合成的数据是作为训练数据的主要来源。为获得更加真实的数据，本文提出一种基于生成对抗网络的维语场景文字修改网络，利用高效的Transfo... 详细信息

通过对维语的场景文字检测与识别研究发现，人工采集标注自然场景文字图像是耗时耗力的，因此人工合成的数据是作为训练数据的主要来源。为获得更加真实的数据，本文提出一种基于生成对抗网络的维语场景文字修改网络，利用高效的Transformer模块构建网络，充分提取图像全局与局部特征来完成维语场景文字图像修改，并添加微调模块，对最终结果进行微调。采用WGAN思想策略训练模型，可有效应对模型崩溃以及梯度爆炸等问题。通过在英文-英文，英文-维文的文字修改实验来验证模型的泛化能力和鲁棒性，无论在客观评价指标（SSIM、PSNR）还是视觉上均取得不错效果，并在真实场景数据集SVT以及ICDAR 2013上进行了验证。

关键词：生成对抗网络场景文字修改维语场景文字图像高效Transformer WGAN

Amniotic membrane mesenchymal stromal cell-derived secretome in the treatment of acute ischemic stroke:A case report

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世界临床病例杂志 2023年第27期11卷 6543-6550页

作者： fu-hong lin Yu-Xiao Yang Yu-Jun Wang Suresh Kumar Subbiah Xiao-Yun Wu Department of Neurology Affiliated Hospital of Chifeng CollegeChifeng 024000Inner Mongolia Autonomous RegionChina Department of Technology Beijing Protercell Biotechnology Co.Ltd.Beijing 102600China Centre for Materials Engineering and Regenerative Medicine Bharath Institute of Higher Education and ResearchChennai 600126India Department of Interventional The First Affiliated Hospital of Baotou Medical CollegeInner Mongolia University of Science and TechnologyBaotouChina

BACKGROUND Stroke is the second and third leading cause of death and disability,*** date,no definitive treatment can repair lost brain ***,various preclinical studies have been reported on mesenchymal stromal cells(MSCs)and their derivatives and their potential as alternative therapies for *** SUMMARY A 45-year-old female suffered an acute stroke,which led to paralysis in the left upper and lower *** amniotic membrane MSC-derived secretome(MSCsecretome)was intravenously transplanted once a week for 4 ***-secretomeregulated regulatory T cells were investigated for the beneficial *** clinical improvement of this patient was accompanied by an increased frequency of regulatory T cells after *** Intravenous administration of MSC-secretome can potentially treat patients who suffer from acute ischemic stroke.

关键词： Acute stroke Amniotic membrane Mesenchymal stromal cells Extracellular vesicle Clinical trial Case report

Simultaneous acceleration of sulfur reduction and oxidation on bifunctional electrocatalytic electrodes for quasi-solid-state Zn–S batteries

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Science China Chemistry 2024年第5期67卷 1531-1538页

作者： Mingli Wang hong Zhang Tianhang Ding Fangjun Wu lin fu Bin Song Pengfei Cao Ke Lu Institutes of Physical Science and Information Technology School of Materials Science and EngineeringKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China Institute of functional Nano&Soft Materials(fuNSOM) Soochow UniversitySuzhou 215123China State Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

The incomplete sulfur reduction and high ZnS re-oxidation energy barrier along with severe side reactions during the battery cycling compromise the practical application of Zn–S electrochemistry. Herein, a bifunctional electrocatalytic sulfur matrix that simultaneously accelerates the sulfur reduction and ZnS oxidation is proposed to realize a highly-efficient Zn–S cell. It is revealed that the N-heteroatom hotspots are more favorable for facilitating the conversion of S to ZnS while the CoO nanocrystal substantially lowers the ZnS activation energy barrier thereby suppressing the formation of disproportionation species(e.g.,SO_(4)^(2-)) and accumulation of inactive ZnS. Accordingly, the Co O anchored on the N-doped carbon-supported sulfur cathode delivers a high Zn^(2+)storage capacity of 1,172 m Ahg^(-1)and outstanding cycling stability with a capacity retention of 71.6% after500 cycles with a high average Coulombic efficiency of 97.8%. Simultaneously, the stable cycling of solid-state Zn–S pouch cells with an energy density of 585 Whkg^(-1)sulfuris also demonstrated. Moreover, the postmortem analysis reveals that the degradation of Zn–S cells is mainly attributed to the limited reversibility of Zn anodes rather than the ZnS decomposition and/or accumulation. The approach to the bidirectional catalysis manipulated the sulfur redox provides a new perspective to realize the theoretical potentials of Zn–S cells.

关键词： Zn–S battery bifunctional catalysts solid-state battery sulfur redox degradation mechanism

Study on the clogging mechanism of punching screen in sand control by the punching structure parameters

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Petroleum Science 2024年第1期21卷 609-620页

作者： fu-Cheng Deng fu-lin Gui Bai-Tao Fan Lei Wen Sheng-hong Chen Ning Gong Yun-Chen Xiao Zhi-Hui Xu Yangtze University Jingzhou434023HubeiChina CNOOC Research Institute Ltd. Beijing100028China CNOOC Ener Tech-Drilling&Production Co. Tianjin300457China Tianjin Branch of CNOOC Ltd. Tianjin300459China

As an independent sand control unit or a common protective shell of a high-quality screen,the punching screen is the outermost sand retaining unit of the sand control pipe which is used in geothermal well or oil and gas ***,most screens only consider the influence of the internal sand retaining medium parameters in the sand control performance design while ignoring the influence of the plugging of the punching screen on the overall sand retaining performance of the *** explore the clogging mechanism of the punching screen,this paper established the clogging mechanism calculation model of a single punching screen sand control unit by using the computational fluid mechanics-discrete element method(CFD-DEM)combined *** to the combined motion of particles and fluids,the influence of the internal flow state on particle motion and accumulation was *** results showed that(1)the clogging process of the punching sand control unit is divided into three stages:initial clogging,aggravation of clogging and stability of *** the initial stage of blockage,coarse particles form a loose bridge structure,and blockage often occurs preferentially at the streamline gathering place below chamfering inside the sand control *** the stage of blockage intensification,the particle mass develops into a relatively complete sand bridge,which develops from both ends of the opening to the center of the *** the stable plugging stage,the sand deposits show a“fan shape”and form a“V-shaped”gully inside the punching slot element.(2)Under a certain reservoir particle-size distribution,The slit length and opening height have a large influence on the permeability and blockage rate,while the slit width size has little influence on the permeability and blockage *** microscopic clogging mechanism and its law of the punching screen prevention unit are proposed in this study,which has some field guidance significance for the design of punching screen

关键词： Punching screen Plugging CFD-DEM Size parameter Sand control

A Survey on Distributed Network Localization from a Graph Laplacian Perspective

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Journal of Systems Science & Complexity 2024年第1期37卷 273-293页

作者： HAN Zhimin lin Zhiyun fu Minyue Artificial Intelligence Institute School of AutomationHangzhou Dianzi UniversityHangzhou 310018China Shenzhen Key Laboratory of Control Theory and Intelligent Systems School of System Design and Intelligent ManufacturingSouthern University of Science and TechnologyShenzhen 518055China Peng Cheng Laboratory Shenzhen 518000China

Network localization serves as a fundamental component for enabling various position based operations in multi-agent systems,facilitating tasks like target searching and formation control by providing accurate position information for all nodes in the *** localization focuses on the challenge of determining the positions of nodes within a network,relying on the known positions of anchor nodes and internode relative *** the past few decades,distributed network localization has garnered significant attention from *** paper aims to provide a review of main results and advancements in the field of distributed network localization,with a particular focus on the perspective of graph *** to its favorable characteristics,graph Laplacian unifies various network localization,even when dealing with diverse types of internode relative measurements,into a unified protocol framework,which can be constructed by a linear method and ensure the global convergence.

关键词： Distributed network localization graph Laplaian sensor network

Effects of COL1A1 and SYTL2 on inflammatory cell infiltration and poor extracellular matrix remodeling of the vascular wall in thoracic aortic aneurysm

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Chinese Medical Journal 2024年第9期137卷 1105-1114页

作者： Xinsheng Xie Ye Yuan Yulong Huang Xiang hong Shichai hong Gang Chen Yihui Chen Yue lin Weifeng Lu Weiguo fu Lixin Wang Department of Vascular Surgery Zhongshan Hospital(Xiamen)Fudan UniversityXiamenFujian 361015China Department of Vascular Surgery Zhongshan HospitalFudan UniversityShanghai 200032China Vascular Surgery Institute of fudan University Fudan UniversityShanghai 200032China

Background:Thoracic aortic aneurysm(TAA)is a fatal cardiovascular disease,the pathogenesis of which has not yet been *** study aimed to identify and validate the diagnostic markers of TAA to provide a strong theoretical basis for developing new methods to prevent and treat this ***:Gene expression profiles of the GSE9106,GSE26155,and GSE155468 datasets were acquired from the Gene Expression Omnibus(GEO)*** expressed genes(DEGs)were identified using the"limma"package in *** absolute shrinkage and selection operator(LASSO),support vector machine-recursive feature elimination(SVM-RFE),random forest,and binary logistic regression analyses were used to screen the diagnostic marker ***-sample gene set enrichment analysis(ssGSEA)was used to estimate immune cell infiltration in ***:A total of 16 DEGs were *** enrichment and functional correlation analyses showed that DEGs were mainly associated with inflammatory response pathways and collagen-related *** type I alpha 1 chain(COL1A1)and synaptotagmin like 2(SYTL2)were identified as diagnostic marker genes with a high diagnostic value for *** expression of COL1A1 and SYTL2 was considerably higher in TAA vascular wall tissues than in the corresponding normal tissues,and there were significant differences in the infiltration of immune cells between TAA and normal vascular wall ***,COL1A1 and SYTL2 expression were associated with the infiltration of immune cells in the vascular wall ***-cell analysis showed that COL1A1 in TAA was mainly derived from fibroblasts and SYTL2 mainly from cluster of differentiation(CD)8+T *** addition,single-cell analysis indicated that fibroblasts and CD8+T cells in TAA were significantly higher than those in normal arterial wall ***:COL1A1 and SYTL2 may serve as diagnostic marker genes for *** upregulation of SYTL2 and COL1A1 may be involved in the inflammat

关键词： Bioinformatics Thoracic aortic aneurysm Immune response Single cell analysis Machine learning

Neurokinin-2 receptor antagonist SR48968 induced necroptosis of myeloid leukemia cells by calcium overload-driven reactive oxygen species accumulation

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Genes & Diseases 2024年第5期11卷 33-35页

作者： Zhibin Yan Xiangyu hong Qihao lin Leijie Wang Gang Shao Chentao Ge Ruilong Xia Caiyun fu Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine College of Life Sciences and MedicineZhejiang Sci-Tech UniversityHangzhouZhejiang 310018China College of Life Sciences China Jiliang UniversityHangzhouZhejiang 310018China

Increasing evidence highlight tachykinin receptors as a prominent player in hematological *** previously revealed the proto-oncogenic role of neurokinin-1 receptor(NK-1R)in acute myeloid leukemia(AML),1 whereas the role of neurokinin-2 receptor(NK-2R)has not been ***,we found NK-2R was significantly up-regulated in AML patients in The Cancer Genome Atlas *** result was further confirmed in blood from AML patients and a range of human leukemia ***,we verified that blocking NK-2R by SR48968 markedly promoted cell death in human myeloid leukemia without cytotoxicity to normal ***,we uncovered that SR48968 induced cytotoxicity through necroptosis mediated by calcium overload-driven reactive oxygen species(ROS)*** summary,our results propose that NK-2R antagonist SR48968 may be used as a new therapeutic approach for myeloid leukemia.

关键词： myeloid antagonist markedly