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Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie wang Wei wang Xuheng Chen Junfang Bao Qiuyue Hao Heng Zheng Runsheng Xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

Primary parenchymal squamous cell carcinoma of the kidney:A case report

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World Journal of Clinical Cases 2025年第4期13卷 34-40页

作者： zhi-Hui Zheng Bo Shao Chao-Min Xu Ke wang Jia-Zhu Wen Li-Kang Luo Jia-Cheng Guan Department of Ultrasound The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Radiology Shulan(Quzhou)HospitalQuzhou 324000Zhejiang ProvinceChina Department of Radiology The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Pathology The Second people’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina

BACKGROUND Primary squamous cell carcinoma(SCC)of the renal parenchyma is extremely rare,with only nine cases *** SUMMARY This study reports a 51-year-old man with primary SCC of the renal *** patient was admitted with recurrent dull pain and discomfort in the right lumbar region,which had worsened over 2 weeks,accompanied by painful gross *** antigen(SCCA)levels were elevated,and imaging revealed a renal mass with associated *** patient underwent laparoscopic unilateral nephrectomy and lymph node *** pathology confirmed highly differentiated SCC with necrosis in the right renal parenchyma,with negative renal pelvis and *** pathological stage was *** months after surgery,the tumor recurred with involvement of the liver,right psoas major muscle,and inferior vena *** patient refused chemotherapy and succumbed to the disease 6 months postoperatively due to disease *** We report a case of primary SCC of the renal parenchyma,a rare renal *** clinical symptoms,laboratory tests,and imaging findings are nonspecific,making accurate and timely diagnosis *** to the literature,for patients with renal calculi accompanied by a renal mass,elevated serum SCCA levels,and magnetic resonance imaging showing cystic or cystic-solid masses within the kidney with pseudocapsules and heterogeneous mild enhancement,the possibility of this disease should be considered.

关键词： Renal tumor Renal parenchyma Squamous cell carcinoma Renal calculi Computed tomography Case report

Tailoring microstructures of CoCrFeNiNb_(0.25)hypoeutectic high-entropy alloy by hot deformation

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Rare Metals 2022年第6期41卷 2028-2037页

作者： Xiao-Rong Liu Feng He Jun-Jie Li ying-ying Dang zhi-Jun wang Jin-Cheng wang School of Materials Scienceand Engineering Northwestern Polytechnical UniversityXi'an710072China Thermal Power Research Institute Xi'an710054China

CoCrFeNiNb_(0.25)hypoeutectic high-entropy alloy(HEA)has shown good mechanical ***,due to interdendritic eutectics,it is challenging to further optimize the microstructure through cold rolling and *** current study showed that hot defor-mation effectively tailored the hypoeutectic *** investigated the hot deformation behavior and microstructure evolution of the dual-phase CoCrFe-NiNb_(0.25) HEA at different temperatures from 800 to 1000℃and different strain rates from 0.01 to 10.00 s^(-1).The systematic investigation showed the deformation activation energy around 500 kJ·mol^(-1).Microstructure with refined grains and uniformly distributed Laves phases can be obtained after 70%compression at 900℃with a strain rate of 0.01 s^(-1).

关键词： Hot deformation High-entropy alloy Microstructure evolution

丙线800、1500拉德照射后豚鼠小肠电的变化

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军事医学科学院院刊 1984年第1期 17-24页

作者：陈国志黄淑英王广义刘志红军事医学科学院放射医学研究所

小肠是辐射敏感组织之一,照后运动功能发生明显改变。本实验观察照后小肠运动变化时电活动的相应改变。为探讨辐射损

关键词：豚鼠不同部位德照荷兰猪小肠拉德

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高新技术企业组织创新理论研究综述

太原理工大学学报（社会科学版） 2003年第3期21卷 12-15页

作者：刘志迎王伟浩合肥工业大学人文经济学院安徽合肥230009

高新技术企业的组织创新是企业管理的前沿问题。文章从高新技术企业组织创新的动力因素、类型、模式、发展趋势等方面对国内外已有的研究成果进行简要综述。

关键词：高新技术企业组织创新理论综述企业管理类型组织规模发展趋势创新模式

Elongation of skyrmions by Dzyaloshinskii-Moriya interaction in helimagnetic films

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Rare Metals 2022年第9期41卷 3150-3159页

作者： ying-ying Dai Han wang Teng Yang Adekunle O.Adeyeye zhi-Dong Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Department of Electrical and Computer Engineering National University of SingaporeSingapore117583Singapore Department of Physics Durham UniversityDurhamDH13LEUK

Distortion of skyrmions arouses much attention recently due to the exotic topologic al and dynamic *** the formation mechanism and dynamical behavior of the deformed skyrmions promotes practical spintronic ***,as a typical form of deformation,has been discovered both in experiments and in ***,the intrinsic mechanism is ***,the coexistence of zero-field circular and elongated skyrmions in helimagnetic films is *** elongated skyrmions,which are determined by the intrinsic Dzyaloshinskii-Moriya interaction(DMI),carry the same topological charge as the circular ones and show the skyrmion Hall *** dynamics reveal again the significant role of the intrinsic DMI playing in the skyrmion elongation.

关键词： Elongated skyrmions Dzyaloshinskii-Moriya interaction Skyrmion Hall effect Zero-field skyrmions

Mechanical properties and friction behaviors of CNT/AlSi_(10)Mg composites produced by spark plasma sintering

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International Journal of Minerals,Metallurgy and Materials 2017年第5期24卷 584-593页

作者： Lin-zhi wang ying Liu Jiao-jiao Wu Xi Zhang Chongqing Key Laboratory of Additive Manufacturing Technology and Systems Chongqing Institute of Green and Intelligent TechnologyChinese Academy of Sciences College of Material Science and Engineering Sichuan University College of Material Science and Engineering Southwest Jiaotong university

The mechanical properties and friction behaviors of CNT/AlSi10Mg composites produced by spark plasma sintering (SPS) were investigated. The results showed that the densities of the sintered composites gradually increased with increasing sintering temperature and that the highest microhardness and compressive strength were achieved in the specimen sintered at 450A degrees C. CNTs dispersed uniformly in the Al-Si10Mg matrix when the addition of CNTs was less than 1.5wt%. However, when the addition of CNTs exceeded 1.5wt%, the aggregation of CNTs was clearly observed. Moreover, the mechanical properties (including the densities, compressive strength, and microhardness) of the composites changed with CNT content and reached a maximum value when the CNT content was 1.5wt%. Meanwhile, the minimum average friction coefficient and wear rate of the CNT/AlSi10Mg composites were obtained with 1.0wt% CNTs.

关键词： metal matrix composites carbon nanotubes (CNTs) aluminum silicon magnesium alloys spark plasma sintering mechanical properties friction

NUMERICAL PREDICTION OF BLADE FREQUENCY NOISE OF CAVITATING PROPELLER

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Journal of Hydrodynamics 2012年第3期24卷 371-377页

作者： YE Jin-ming XIONG ying LI Fang wang Zhan-zhi College of Naval Architecture and Power Naval University of Engineering Wuhan 430033 China

The blade frequency noise of a cavitating propeller in a uniform flow is analyzed in the time domain. The unsteady loading （of a dipole source） and the sheet cavity volume （of a monopole source） on the propeller surface are calculated by a potential-based surface panel method. Then the time-dependent pressure and the cavity volume data are used as the input for the Fowcs Williams-Hawkings formulation to predict the acoustics pressure. The integration of the noise source is performed over the true blade surface rather than the ideal blade surface without thickness. The noise characteristics of the cavitating propeller are discussed. With the sheet cavitation, the thickness （cavitation） noise is larger than the loading noise and is the dominant noise source. The noise directivity is not as clear as that of the noise under a non-cavitation condition. The cavitation noise is attenuated more slowly than the non-cavitation noise.

关键词： propeller surface panel method cavitation noise time domain

Role of retained austenite in advanced high-strength steel:ductility and toughness

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Journal of Iron and Steel Research International 2024年第9期31卷 2079-2089页

作者： Vung Lam Nuam Hao Zhang ying-chun wang zhi-ping Xiong National Key Laboratory of Science and Technology on Materials under Shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China Tangshan Key Laboratory of High-Performance Metals and Ceramics Tangshan Research Institute BITTangshan063000HebeiChina

Enhancing the ductility and toughness of advanced high-strength steels is essential for the wide range of promising *** retained austenite(RA)is a key phase due to the austenite-to-martensite transformation and its transformation-induced plasticity *** is commonly accepted that slow RA-to-martensite transformation is beneficial to ductility;therefore,the RA fraction and stability should be carefully *** RA stability is related to its morphology,size,carbon content,neighboring phase and ***,these factors are *** is noteworthy that the influence of RA on ductility and fracture toughness is not consistent because of their difference in stress *** is no clear relationship between fracture toughness and tensile ***,it is important to understand the role of RA in *** toughness is enhanced during the RA-to-martensite transformation,while the fracture toughness is decreased due to the formation of fresh and brittle *** a result,the findings regarding to the effect of RA on fracture toughness are *** investigations should be conducted in order to fully understand the effects of RA on ductility and fracture toughness,which can optimize the combination of ductility and toughness in AHSSs.

关键词： Retained austenite Ductility Toughness TRIP effect Steel