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Rare Metals 2022年第10期41卷 3475-3485页

作者： Xiao-Min Wu Fei Xie yong-lin Yao Yue Sun Zhong-Sheng Hua Zhuo Zhao yong-Xiang Yang Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling School of Metallurgical EngineeringAnhui University of TechnologyMaanshan243002China Department of Materials Science and Engineering Delft University of TechnologyDelft2628CDNetherlands

In order to take full advantage of the secondary resources,in this paper,we reported a template-free process to prepare porous Co microfibers from spent lithiumion batteries(LIBs).First,the waste LiCoO_(2) powders were leached by oxalic acid at a suitable temperature,and rodlike cobalt oxalate powders were ***,the porous Co microfibers were prepared by using the cobalt oxalate as precursors through a thermal decomposition at420 ℃ under nitrogen *** prepared Co microfibers possess diameters of 1-2 μm,and each microfiber consists of small particles with size of100-200 *** Co microfibers(25 wt%)/paraffin composite exhibited excellent microwave absorption *** the sample thickness is 4.5 mm,the reflection losses reach-36.14 and-38.20 dB at 4.16 and 17.60 GHz,respectively,and the effective bandwidth reaches up to 5.52 *** indicates that the Co microfibers can be used as a promising microwave ***,this paper demonstrates a novel process to make a high value-added product through recycling from the spent lithium-ion *** addition,it is advantageous to eliminate the hazard of spent lithium-ion batteries and electromagnetic radiation to environment and human health.

关键词： Spent lithium-ion batteries(LIBs) Co microfibers Recycling Oxalic acid leaching Microwave absorption

中医药通过调控细胞自噬改善糖尿病心肌病的研究现状

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中国临床药理学杂志 2024年第10期40卷 1530-1534页

作者：刘蕾杨丽霞梁永林朱向东高艳奎甘肃中医药大学中医临床学院甘肃兰州730000 甘肃中医药大学基础医学院甘肃兰州730000 绍兴市人民医院医学研究中心浙江绍兴312000 宁夏医科大学中医学院宁夏回族自治区银川750000

糖尿病心肌病(DCM)的发病机制复杂。自噬作为细胞重要的维稳机制,其水平是否稳定与DCM病程的发展密切相关。众多中药及复方的有效成分都可以通过降血糖、抗凋亡、抗炎、抗氧化应激等机制来调控自噬水平,减轻自噬导致的心肌损伤,改善心功... 详细信息

糖尿病心肌病(DCM)的发病机制复杂。自噬作为细胞重要的维稳机制,其水平是否稳定与DCM病程的发展密切相关。众多中药及复方的有效成分都可以通过降血糖、抗凋亡、抗炎、抗氧化应激等机制来调控自噬水平,减轻自噬导致的心肌损伤,改善心功能,延缓DCM的发生发展。本文就近5年的研究成果展开梳理,以期为防治DCM的中医药的研发与临床应用提供思路和参考。

关键词：中医药糖尿病心肌病细胞自噬有效成分综述

Evolution of microstructure in reheated coarse-grained zone of G115 novel martensitic heat-resistant steel

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Journal of Iron and Steel Research International 2022年第2期29卷 327-338页

作者： Zhong-yi Chen Zheng-zong Chen Dong-xu Kou yong-qing Li yong-lin Ma Yi-ming Li School of Material and Metallurgy Inner Mongolia University of Science and TechnologyBaotou014010Inner MongoliaChina Institute for Special Steels China Iron and Steel Research InstituteBeijing100081China Technology Center Inner Mongolia North Heavy Industry Group Co.Ltd.Baotou014010Inner MongoliaChina Key Laboratory of Advanced Metals and Materials of Inner Mongolia of Materials and Metallurgy School Inner Mongolia University of Science and TechnologyBaotou014010Inner MongoliaChina

Based on the thermal simulation method,a systematical analysis was conducted on the effect of welding peak temperature and the cooling time that takes place from 800 to 500℃ on microstructure,precipitates,substructure and microhardness of the reheated coarse-grained heat-affected zone(CGHAZ)of G115 novel martensitic heat-resistant *** revealed from the results,the microstructure of un-altered CGHAZ(UACGHAZ)and supercritically CGHAZ(SCCGHAZ)was lath martensite,and structural heredity *** reheated CGHAZ(IRCGHAZ)exhibited martensite and over-tempered martensite,and subcritical CGHAZ(SCGHAZ)displayed martensite and under-tempered *** austenite in UACGHAZ and SCCGHAZ was transformed with the diffusion mechanism during the first thermal cycle,but with the non-diffusion mechanism during the second thermal *** this reason,A_(c1) and A_(c3) during the second thermal cycle were significantly lower than those during the first thermal cycle,and A_(c1) and A_(c3) were reduced by nearly 14 and 44℃,*** the content and stability of the austenite alloy during the second thermal cycle of IRCGHAZ were lower than those during the first thermal cycle,M_(s) increased by nearly 30℃.There were considerable precipitates in the over-tempered region of IRCGHAZ,and the Laves phase was contained,which was not conducive to high-temperature creep ***,the dislocation density and the number of sub-grains in the region were lower,resulting in a sharp decrease in the microhardness,and it was the weak area in the reheated CGHAZ.

关键词： Heat-resistant steel G115 steel Reheated coarse-grained heat-affected zone Microstructure evolution Precipitate

Ellipsometric Studies of Polyaniline-Effective Dimension of“Conducting”States

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Chinese Physics Letters 1998年第3期15卷 219-220页

作者： YU Zhao-xian lin yong-yao MO Dang Department of Physics Zhongshan UniversityGuangzhou 510275

A model of fractional-dimensional space is employed to study the measured ellipsometric spectra of polyaniline with acid doping *** from some band parameters,the important dimensional properties of electronic states in the system associated with direct interband transitions can be *** results indicate that as doping density is increased,the effective dimension(D)of electron states in the polyaniline changes from about 1.5D t o near 2.6D,in the same time the polyaniline shows an insulator-metal transition.A brief discussion about the results is given.

关键词： transition doping polyaniline

Homogenization treatment of high Nb containing TiAl alloys with as-cast and as-forged microstructures

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Rare Metals 2008年第2期27卷 181-186页

作者： XU Zhengfang XU Xiangjun lin Junpin ZHANG yong WANG Yanli lin Zhi CHEN Guoliang State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The effect of heat treatment on the microstructure evolution of a high Nb containing TiAl alloy has been studied. The results indicate that β-segregation, β-segregation and S-segregation in the as-cast and as-forged alloys can be effectively eliminated at the temperature above Tα （1350-1400℃） for long holding time （12-24 h） and the full lamellar （FL） microstructure is gained. For the two alloys, the lamellar colony sizes are 120 μm and 2000 μm, respectively after heat treatment at 1400℃ for 12 h. Meanwhile, the sizes are 210 μm and 3000 μm, respectively at 1350℃ for 24 h. To get a fine homogenous microstructure, the primary as-cast alloy is first subjected to preheat treatment for eliminating the segregations. After the preheat treatment, the ailoy is processed by the multi-step canned forging to attain the microstructure with fine grain size.

关键词： TiAl-based alloy Nb-containing FL microstructure heat treatment rnicrosegregation

Pretreatment with H_2O_2 Alleviates Aluminum-induced Oxidative Stress in Wheat Seedlings

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Journal of Integrative Plant Biology 2011年第1期53卷 44-53页

作者： Fang Jie Xu Chong Wei Jin Wen Jing Liu yong Song Zhang Xian yong lin Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health College of Environmental & Resource Sciences Zhejiang University Hangzhou 310029 China Zhejiang Key Laboratory of Subtropical Soil Science and Plant Nutrition College of Environmental & Resources Science Zhejiang University Hangzhou 310029 China

Hydrogen peroxide （H2O2） is a key reactive oxygen species （ROS） in signal transduction pathways leading to activation of plant defenses against biotic and abiotic stresses. In this study, we investigated the effects of H2O2 pretreatment on aluminum （AI） induced antioxidant responses in root tips of two wheat （Triticum aestivum L.） genotypes, Yangmai-5 （AI-sensitive） and Jian-864 （AI-tolerant）. AI increased accumulation of H2O2 and O2^- leading to more predominant lipid peroxidation, programmed cell death and root elongation inhibition in Yangmai-5 than in Jian-864. However, H2O2 pretreatment alleviated AI- induced deleterious effects in both genotypes. Under AI stress, H2O2 pretreatment increased the activities of superoxide dismutase, catalase, peroxidase, ascorbate peroxidase and monodehydroascorbate reductase, glutathione reductase and glutathione peroxidase as well as the levels of ascorbate and glutathione more significantly in Yangmai-5 than in Jian-864. Furthermore, H2O2 pretreatment also in- creased the total antioxidant capacity evaluated as the 2, 2-diphenyl-l-picrylhydrazyl-radical scavenging activity and the ferric reducing/antioxidant power more significantly in Yangmai-5 than in Jian-864. Therefore, we conclude that H2O2 pretreatment improves wheat AI acclimation during subsequent AI exposure by enhancing the antioxidant defense capacity, which prevents ROS accumulation, and that the enhancement is greater in the AI-sensitive genotype than in the AI-tolerant genotype.

关键词： Peroxides Oxidation Beers Aluminium Tolerance Genotypes Stress Antioxidants Glutathione reductase Roots

LA-(MC)-ICPMS U-Pb zircon geochronology and Lu-Hf isotope compositions of the Taihua complex on the southern margin of the North China Craton

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Chinese Science Bulletin 2010年第23期55卷 2557-2571页

作者： DIWU ChunRong SUN yong lin CiLuan WANG HongLiang State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China

Widely distributed on the southern margin of the North China Craton,the Taihua complex extends roughly in an east-west direction and the relatively complete successions are found in Lushan County,Henan *** many other Archean terranes,the Taihua Complex can be divided into two major lithological units along the Dangze River,namely gneisses series and supracrustal *** former is located on the north side of the river and chiefly composed of TTG gneisses and amphibolites;the latter on the south side of the river is mainly supracrustal *** with the previous studies,the results obtained by this study show that the Taihua complex was formed in a large time span from Neoarchean to *** TTG gneisses and amphibolites are dated at Neoarchean (2794–2752 Ma).The 2.9 Ga and 3.1 Ga zircons in amphibolites could be *** the North China Craton,the 2.8–2.7 Ga old rocks crop out in several areas *** Shandong Province,Jiaodong Peninsula and Lushan area of Henan *** addition,2.8–2.7 Ga detrital zircons or xenocryst zircons have been recognized in Huai’an,Fuping,Wutai areas of North China Craton and also reported in the Early Paleozoic diamondiferous kimberlites in Mengyin and *** these age results indicate that the 2.8–2.7 Ga rocks may have been developed much broader region than today’s *** Hf and whole rock Nd isotopes show that the 2.8–2.7 Ga tectono-thermal event represents an important period of crustal growth with minor ancient crust reworked in the North China *** the formation of supracrustal rocks is limited to 2.2–2.0 Ga in the Palaeoproterozoic time,not the Archaean,as previously *** with the chronological data of aluminium-rich metamorphic rocks (Khondalite series) on the southern margin of the North China Craton and adjacent areas,it is suggested that the above areas have widely developed Paleoproterozoic passive continental margin environment.

关键词：锆石年代学中国地区同位素组成克拉通南缘 Hf 洛杉矶 MS法

不稳定穿支动脉梗死患者在静脉溶栓24h内应用替罗非班的有效性和安全性

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罕少疾病杂志 2024年第9期31卷 25-27页

作者：杜伟伟赵昆贾永林开封市中心医院神经内科河南开封475000

目的探讨替罗非班治疗不稳定穿支动脉梗死患者的效果及不良事件发生情况。方法选取2021年1月至2023年5月在开封市中心医院神经内科就诊的不稳定穿支动脉梗死患者52例。静脉溶栓治疗24h内予以替罗非班治疗的患者纳入替罗非班组,否则均... 详细信息

目的探讨替罗非班治疗不稳定穿支动脉梗死患者的效果及不良事件发生情况。方法选取2021年1月至2023年5月在开封市中心医院神经内科就诊的不稳定穿支动脉梗死患者52例。静脉溶栓治疗24h内予以替罗非班治疗的患者纳入替罗非班组,否则均纳入非替罗非班组。对比两组基线资料、神经功能及不良事件。结果两组基线资料比较,P>0.05;替罗非班组治疗1周时NIHSS评分、治疗90dm Rs评分均低于非替罗非班组(P0.05。结论替罗非班治疗不稳定穿支动脉梗死患者能够显著改善患者的神经功能,且在治疗90天后的功能独立性评分较非替罗非班组更为优越,此外,尽管两组不良事件发生率无显著差异,但替罗非班组的安全性未见明显增加,提示其在临床应用中的可行性。

关键词：不稳定穿支动脉梗死静脉溶栓替罗非班有效性安全性

Morphology and Precipitation Kinetics of MnS in Low-Carbon Steel During Thin Slab Continuous Casting Process

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Journal of Iron and Steel Research International 2006年第5期13卷 30-36页

作者： YU Hao KANG yong-lin ZHAO Zheng-zhi SUN Hao School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Jinan Iron and Steel Technical Center Jinan Iron and Steel Group Co Jinan 250101 Shandong China

The morphology of manganese sulfide formed during thin slab continuous casting process in low-carbon steel produced by compact strip production （CSP） technique was investigated. Using transmission electron microscopy analysis, it was seen that a majority of manganese sulfides precipitated at austenite grain boundaries, the morphologies of which were spherical or close to the spherical shape and the size of MnS precipitates ranged from 30 nm to 100 nm. A mathematical model of the manganese sulfide precipitation in this process was developed based on classical nucleation theory. Under the given conditions, the starting and finishing precipitation temperatures of MnS in the continuous casting thin slab of the studied low-carbon steel are 1 189 ℃ and 1 171 ℃, respectively, and the average diameter of MnS precipitates is about 48 nm within this precipitation temperature range. The influences of chemical components and thermo-mechanical processing conditions on the precipitation behavior of MnS in the same process were also discussed.

关键词： morphology thin slab continuous casting precipitation kinetics compact strip production TEM

Investigation on inductive heating of A356 alloy for thixo-forming

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 309-313页

作者： Kai-kun Wang Jian-lin Sun yong-lin Kang Qi Zhang Lei Yang Chun-mei Ma School of Materials Science and Engineering University of Science and Technology Beijing 100083 Beijing China East-China Micro-electronic Institute of Technology 230022 Hefei China

To meet the demands of continuous stream-line for component production in the thixo-forming industry, billet heating should be of high quality and in a controllable way. A 4-step inductive heating strategy for aluminum alloy A356 was performed. Thixotropic testing and microstructure analysis showed that a homogenous temperature distribution was achieved after temperature-power-time optimization. Theoretical analysis was given concerning the thermal conductivity and heat capacity of A356 between conventional and semisolid casting microstructures. The experimental results show that the optimized 4-step strategy could be the best strategy for billet heating during the thixo-forming of aluminum alloy A356.

关键词： Thixo-forming aluminum alloys inductive heating temperature distribution