检索结果-内蒙古大学图书馆

Iron recovery and dephosphorization behaviors from high-phosphorus oolitic hematite by gas-based direct reduction and magnetic separation

引用

Journal of Iron and Steel Research International 2025年第3期32卷 550-563页

作者： Fang Liu Yi-chi Zhang Wang Zeng Jun Ni Yun-peng Si Heng Zhou Tian-xiang Zhang Sheng-li Wu Ming-yin Kou State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China

With the depletion of high-quality iron ore resources,high-phosphorus oolitic hematite(HPOH)has attracted great attention due to its large reserve and relatively high iron ***,HPOH is very difficult to be used in ironmaking process due to its special structure.A two-step method of gas-based direct reduction and magnetic separation was thus proposed to recover iron and reduce *** results showed that the powdery reduced iron produced contained 92.31%iron and 0.1%phosphorus,and the iron recovery was 92.65%under optimum reduction condition,which is suitable for following *** apatite will be reduced under long reduction time and a large reducing gas flow rate,resulting in more phosphorus found in the metallic *** the hydrogen–carbon ratio will inhibit the formation and growth of iron particles and prevent the breakage of oolitic *** adjustment of reduction temperature is recommended as it affects the oolitic structure and reduction.

关键词： High-phosphorus oolitic hematite Iron recovery Dephosphorization Gas-based direct reduction Magnetic separation

来源：评论

学校读者我要写书评

暂无评论

On-demand reverse design of polymers with PolyTAO

引用

npj Computational Materials 2024年第1期10卷 317-327页

作者： Haoke Qiu Zhao-Yan Sun State Key Laboratory of Polymer Physics and Chemistry&Key Laboratory of Polymer Science and Technology Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022 JilinChina School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei230026 AnhuiChina

The forward screening and reverse design of drug molecules,inorganic molecules,and polymers with enhanced properties are vital for accelerating the transition from laboratory research to market ***,due to the scarcity of large-scale datasets,the discovery of polymers via materials informatics is particularly ***,scientists have developed various machine learning models for polymer structure-property relationships using only small polymer datasets,thereby advancing the forward screening process of ***,the success of this approach ultimately depends on the diversity of the candidate pool,and exhaustively enumerating all possible polymer structures through human imagination is ***,achieving on-demand reverse design of polymers is *** this work,we curate an immense polymer dataset containing nearly one million polymeric structure-property pairs based on expert knowledge.

关键词： property thereby inorganic

来源：评论

学校读者我要写书评

暂无评论

Power Optimization for Low Transmission Delay in Software Defined Data Center Networks

引用

IEEE Transactions on Mobile computing 2025年第7期24卷 5716-5730页

作者： Zhao, Yong Cao, Jiannong Wang, Xingwei Li, Fuliang He, Qiang Liu, Xiaojie University of Electronic Science and Technology of China Trusted Cloud Computing and Big Data Key Laboratory of Sichuan Province Laboratory of Intelligent Collaborative Computing Chengdu611731 China Hong Kong Polytechnic University Department of Computing Hung Hom Hong Kong Northeastern University College of Computer Science and Engineering Shenyang110819 China Northeastern University College of Medicine and Biological Information Engineering Shenyang110819 China Pengcheng Laboratory Shenzhen518066 China

Software-Defined Data Center Networks (SDDCNs) utilizes Software Defined Networking (SDN) as a network architecture to achieve highly flexible, programmable, and automated management of Data Center Networks (DCNs). The high energy consumption of DCNs remains a persistent and significant challenge. Thus, the energy saving is crucial and imperative for DCNs. Current energy-efficient solutions primarily rely on flow consolidation and dynamic device sleeping techniques to reduce energy consumption. However, these approaches often yield long Flow Completion Time (FCT), potentially resulting in violations of service-level agreements, particularly for delay-sensitive applications. In this paper, we formulate the problem of minimizing the power consumption in SDDCNs as key objective while ensuring timely FCT for delay-sensitive applications. To solve this problem, we first introduce the Active Network Generation (ANG) approach, which generates a minimal active subnet with the least number of active devices while meeting the current traffic demand. Subsequently, we propose two algorithms based on the type of applications: the Delay-Tolerant Flow Route (DTFR) algorithm for delay-tolerant applications and the Delay-Sensitive Flow Route (DSFR) algorithm for delay-sensitive applications. Simulation results demonstrate that our propose solution achieves an energy-saving rate of up to 67.77% and significantly reduces FCT compared to benchmark solutions. © 2002-2012 IEEE.

关键词： Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

Photocalibrated NO release from the zinc ion fiuorescent probe based on naphthalimide and its application in living cells

引用

Chinese Chemical Letters 2025年第4期36卷 323-326页

作者： Zhixiao Xiong Shanni Qiu Yuyu Wang Houna Duan Yi Xiao Yufang Xu Weiping Zhu Xuhong Qian State Key Laboratory of Bioreactor Engineering Shanghai Key Laboratory of Chemical BiologySchool of PharmacyEast China University of Science and TechnologyShanghai 200237China Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism School of PharmacyEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China

A highly sensitive zinc ion fiuorescent probe NOD-NY with controlled release of nitric oxide was designed,synthesized and used for tracking intracellular zinc ions in living A549 ***-NY was prepared from naphthalimide as the fiuorophore and N,N-bis(2-pyridylmethyl)amine as the zinc ion recognition receptor,the amide N atom of the naphthalimide was connected to *** the irradiation of ultraviolet light,NOD-NY can quantitatively release nitric oxide and generate a highly sensitive zinc ion probe Zn-HN,accompanied by a red-shift process of maximum ultraviolet absorption from 350 nm to 450 *** addition of Zn^(2+)to the solutions of Zn-HN,a remarkable fiuorescence enhancement was observed,which could be attributed to the photo-induced electron transfer(PET)*** replaced the nbutylamine on NOD-NY with diethylene glycolamine or triphenylphosphine structures,NOD-AY with good biocompatibility and NOD-BY that can target mitochondria were obtained *** addition,the nitric oxide released by NOD-NY enriched in lysosome can diffuse into *** released nitric oxide can stimulate metallothionein to release zinc ions,and the light-induced in situ generated zinc ion probe Zn-HN can have a highly sensitive fiuorescence response to free zinc ions in living A549 cells.

关键词： Naphthalimide Fluorescent probe Nitric oxide donor Zinc ion Photocalibration

来源：评论

学校读者我要写书评

暂无评论

Modulation of reactive oxygen species to enhance sonodynamic therapy

引用

Particuology 2023年第4期75卷 199-216页

作者： Xiaoyu Liu Xueting Pan Chaohui Wang Huiyu Liu Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic CompositesBeijing Laboratory of Biomedical MaterialsBionanomaterials&Translational Engineering LaboratoryBeijing Key Laboratory of BioprocessBeijing University of Chemical TechnologyBeijing100029China

Reactive oxygen species(ROS),involving in many biological reactions,play an important role in disease *** the various ROS-based therapeutic modalities,sonodynamic therapy(SDT)stands out with its unique *** turn,the SDT efficacy is mainly dependent on the ROS levels in the disease ***,in recent years,researchers have extensively investigated SDT with high ROS generation *** this review,we focus on effective strategies to improve the therapeutic ef-ficiency of SDT by modulating ROS,overview the basic mechanisms of ROS generation by sonosensitizers,highlight the rational design of sonosensitizers,and summarize strategies to improve the SDT efficacy by modulating disease *** addition,multiple ROS synergistic treatment modalities and the prospect of SDT are *** believe that the understanding and exploration of SDT enhancement strategies will facilitate the clinical translation of SDT.

关键词： Reactive oxygen species Sonodynamic therapy Sonosensitizers Oxidative stress Combination therapy

来源：评论

学校读者我要写书评

暂无评论

Superatomic Ag_(58) nanoclusters incorporating a [MS_(4)@Ag_(12)]^(2+)(M = Mo or W) kernel show aggregation-induced emission

引用

Chinese Chemical Letters 2024年第10期35卷 452-456页

作者： Jun-Jie Fang Zheng Liu Yun-Peng Xie Xing Lu State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In core-shell silver nanoclusters,the control of core structure presents a more formidable challenge compared to that of the shell ***,we report the successful synthesis and characterization of four distinct silver thiolate nanoclusters[MS_(4)@Ag_(12)@Ag_(46)S_(24)(dppb)_(12)](M=Mo or W),each incorporating a cup-like[MS_(4)@Ag_(12)]^(2+)*** nanoclusters were meticulously prepared using(NH_(4))2Mo S4or(NH_(4))_(2)WS_(4)as both a template and a controlled source of ***,we have observed a unique configuration within these eight-electron superatomic Ag_(58) nanoclusters,where the zerovalent Ag atoms reside exclusively within the inner[MS_(4)@Ag_(12)]^(2+)*** stands in contrast to other superatomic clusters possessing an Ag(0)***,the introduction of phenyl-containing compounds during the synthesis process induced a transformation in the space group symmetry from C_(2)/c to I 4ˉ.This transformative effect was found to originate from the interplay between adjacent 1,4-bis(diphenylphosphino)butane(dppb)ligands,which facilitated enhanced emission through aggregationinduced intermolecular interactions,specifically C-H···π***,our findings contribute substantively to the understanding of the intricate relationship between nanocluster structures and their corresponding properties,shedding light on the crucial roles played by templates and diphosphine ligands in this context.

关键词： Superatom Silver nanocluster Template synthesis Photoluminescence Aggregation-induced emission

来源：评论

学校读者我要写书评

暂无评论

Modulating electronic structure of nickel diselenide by vanadium doping toward highly efficient and stable bifunctional electrocatalysts for overall water splitting

引用

Journal of Materials science & Technology 2024年第20期187卷 63-71页

作者： Miaomiao Bai Taotao Ai Weiwei Bao Jie Han Junjun Zhang Qi Yu Jiangying Liu Xueling Wei Xiangyu Zou Liangliang Feng National and Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology School of Materials Science and EngineeringShaanxi University of TechnologyHanzhong 723000China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry&Chemical EngineeringNingxia UniversityYinchuan 750021China School of Materials Science&Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021China

Designing low-cost and high-efficiency bifunctional electrocatalysts is one of the challenges in the clean production of hydrogen energy in electrochemical water *** metal selenides(TMSes)have been widely studied because of their low price,intrinsic metal properties,and high catalytic *** addition,the synergistic effect between bimetallic selenides exhibits better performance than monometallic selenides in the electrocatalytic ***,we synthesized V-doped NiSe2 nanowire arrays on pretreated nickel foam by a convenient two-step hydrothermal synthesis *** the al-kaline electrolyte,V-NiSe_(2)/NF exhibited excellent OER catalytic activity(293.6 mV@50 mA cm^(-2)).In ad-dition,the introduction of heteroatom V induces stronger electronic interactions between the structural atoms of the catalyst,altering the electronic structure and causing V-NiSe_(2)/NF to demonstrate excellent OER *** the long-term OER test,V-NiSe_(2)/NF was converted into NiOOH and SeO_(x)^(2-),which may be the“real”active species during catalytic reactions,and we also successfully captured the for-mation of intermediate NiOOH and selenite as active centers in the OER process through in-situ *** theoretical calculation shows that the electron transfer modulates the electron structure,changes the adsorption-desorption energy of the reaction intermediates,reduces the potential barrier of the rate-limiting step,and improves the OER *** V doping engineering strategy and the unique nanowire array structure make TMSes exhibit excellent OER *** study provides a new idea for the design of TMSe catalysts with excellent electrocatalytic performance.

关键词： Electrocatalysis Oxygen evolution reaction Vanadium doping Overall water splitting In-situ Raman Density functional theory

来源：评论

学校读者我要写书评

暂无评论

Unveiling the orientation growth mechanism and solar-blind response performance of β-Ga2O3(100)film on SiC substrate with AlN buffer layer

引用

材料科学技术（英文版） 2025年第7期210卷 20-28页

作者： Jie Su Zixin Zhang Liang Shi Liping Feng Fuchao He Jingjing Chang Jincheng Zhang Yue Hao State Key Laboratory of Wide Bandgap Semiconductor Devices and Integrated Technology School of MicroelectronicsXidian UniversityXi'an 710071PR China State Key Lab of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072PR China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100PR China State Key Laboratory of Wide Bandgap Semiconductor Devices and Integrated Technology School of MicroelectronicsXidian UniversityXi'an 710071PR China State Key Lab of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072PR China School of Electronics Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240PR China

Optimizing the orientation of β-Ga2O3 has emerged as an effective strategy to design high-performanceβ-Ga2O3 device,but the orientation growth mechanism and approach have not been revealed ***,by employing AlN buffer layer,the highly preferred orientation of β-Ga2O3(100)film rather than(-201)film is realized on 4H-SiC substrate at low sputtering power and *** β-Ga2O3(100)film exhibits a slower growth speed than(-201)film,the former possesses the higher dangling bond density and the lower nucleation energy,and a large conversion barrier exists between these two ***,the AlN buffer layer can suppress the surface oxidation of the 4H-SiC substrate and eliminate the strain of β-Ga2O3(100)film,which further reduces the nucleation energy and en-larges the conversion ***,the AlN buffer layer can increase the oxygen vacancy formation energy and decrease the oxygen vacancy concentration of β-Ga2O3(100)***,the solar-blind photodetector based on the oriented film exhibits the outstanding detectivity of 1.22 × 1012 Jones and photo-to-dark current ratio of 1.11 × 105,which are the highest among the reported β-Ga2O3 solar-blind photodetector on the SiC *** results offer in-depth insights into the preferred orientation growth mechanism,and provide an effective way to design high-quality β-Ga2O3(100)orientation film and high-performance solar-blind photodetector.

关键词： β-Ga2O3(100)film Orientation growth AlN buffer layer Solar-blind photodetector DFT calculation

来源：评论

学校读者我要写书评

暂无评论

Core-rim structured MXene@SiO_(2)composites as oil-based additives for enhanced tribological properties

引用

Friction 2024年第8期12卷 1728-1740页

作者： Yuhong CUI Shenghua XUE Tiantian WANG Shujuan LIU Qian YE Feng ZHOU Weimin LIU State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Herein,we have prepared SiO_(2)particles uploaded MXene nanosheets via in-situ hydrolysis of *** to the large number of groups at the edges of MXene,SiO_(2)grows at the edges first,forming MXene@SiO_(2)composites with a unique core-rim *** tribological properties of MXene@SiO_(2)as lubricating additive in 500 SN are evaluated by *** results show that MXene@SiO_(2)can reduce the friction coefficient of 500 SN from 0.572 to 0.108,the wear volume is reduced by 73.7%,and the load capacity is increased to 800 *** superior lubricity of MXene@SiO_(2)is attributed to the synergistic effect of MXene and SiO_(2).The rolling friction caused by SiO_(2)not only improves the bearing capacity but also increases the interlayer distance of MXene,avoiding accumulation and making it more prone to interlayer ***@SiO_(2)is adsorbed on the friction interface to form a physical adsorption film and isolate the friction *** addition,the high temperature and high load induce the tribochemical reaction and form a chemical protection film during in the friction ***,the presence of these protective films results in MXene@SiO_(2)having good lubricating properties.

关键词： Ti3C2Tx MXene SiO_(2)nanoparticles lubricating additives protective film

来源：评论

学校读者我要写书评

暂无评论

In-situ formation of nitrogen doped microporous carbon nanospheres derived from polystyrene as lubricant additives for anti-wear and friction reduction

引用

Friction 2024年第3期12卷 439-451页

作者： Yixin WANG Qi LU Huijie XIE Shujuan LIU Qian YE Feng ZHOU Weimin LIU State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

This study presents a nitrogen-doped microporous carbon nanospheres(N@MCNs)prepared by a facile polymerization–carbonization process using low-cost *** N element in situ introduces polystyrene(PS)nanospheres via emulsion polymerization of styrene with cyanuric chloride as crosslinking agent,and then carbonization obtains N@*** as-prepared carbon nanospheres possess the complete spherical structure and adjustable nitrogen amount by controlling the relative proportion of tetrachloromethane and cyanuric *** friction performance of N@MCNs as lubricating oil additives was surveyed utilizing the friction experiment of ball-disc *** results showed that N@MCNs exhibit superb reduction performance of friction and *** the addition of N@MCNs was 0.06 wt%,the friction coefficient of PAO-10 decreased from 0.188 to 0.105,and the wear volume reduced by 94.4%.The width and depth of wear marks of N@MCNs decreased by 49.2% and 94.5%,*** carrying capacity of load was rocketed from 100 to 400 N *** the analysis of the lubrication mechanism,the result manifested that the prepared N@MCNs enter clearance of the friction pair,transform the sliding friction into the mixed friction of sliding and rolling,and repair the contact surface through the repair ***,the tribochemical reaction between nanoparticles and friction pairs forms a protective film containing nitride and metal oxides,which can avert direct contact with the matrix and improve the tribological *** experiment showed that nitrogen-doped polystyrene-based carbon nanospheres prepared by in-situ doping are the promising materials for wear resistance and reducing *** preparing method can be ulteriorly expanded to multi-element co-permeable *** and boron co-doped carbon nanospheres(B,N@MCNs)were prepared by mixed carbonization of N-enriched PS and boric acid,and exhibited high load carrying capacity and good tribolog

关键词： lubricant additives hypercrosslinked polystyrene carbon nanospheres friction reduction anti-wear

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：