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Effect of Ni/(La+Mg) Ratio on Structure and Electrochemical Performance of La-Mg-Ni Alloy System

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Journal of Iron and Steel Research International 2009年第3期16卷 83-88页

作者： DONG Xiao-ping YANG Li-ying ZHANG Yang-huan wang xin-lin College of Quality and Technical Supervision Hebei University Baoding 071002 Hebei China Department ofFunctional Material Research China Iron and Steel Research Institute Group Beijing 100081 China

As the alloy with the most suitable Ni/（La＋Mg） ratio has higher capacity and good cycle stability,the effects of Ni/（La＋Mg） ratios on the electrochemical performances of the La0.80Mg0.20Nix （x=3.5 to 5.0） alloys have been investigated to find the most suitable Ni/（La＋Mg） ratio. The results of XRD and SEM observations show that the phase composition of the alloys varies with different Ni/（La＋Mg） ratios. When Ni/（La＋Mg） is not more than 4.25,all the alloys contain LaNi5 and （La,Mg）2Ni7 phases,in addition,the LaMg and （La,Mg）Ni3 phases exist in the x=3.5 and 3.75 alloys,respectively. The LaMg2Ni9 phase exists in the x=4.25 alloy. There are the LaNi5 and LaMg2Ni9 phases in the x=4.5,4.75,and 5.0 alloys. The phase abundance and cell volume change with different Ni content. When the Ni/（La＋Mg） ratio is not more than 4.25,the alloys possess excellent activation capability,however,the activation capabilities of the alloys decrease with a further increase in the Ni/（La＋Mg） ratio. With increasing the Ni/（La＋Mg） ratio,the maximum discharge capacities,the medium voltages,and the cycle stabilities of the alloys first increase and then decrease. When the Ni/（La＋Mg） ratio is 3.75,the corresponding alloy has the maximum discharge capacity among all the alloys. However,the cycle stability of the Ni/（La＋Mg）=4.0 alloy is better than that of the others.

关键词： Ni/(La+Mg) ratio La-Mg-Ni alloy system structure characteristic electrochemical performance

Knockout of C6orf120 in Rats Alleviates Concanavalin A-induced Autoimmune Hepatitis by Regulating Macrophage Polarization

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Biomedical and Environmental Sciences 2024年第6期37卷 594-606页

作者： xin wang Yuqi wang Hui Liu Yingying lin Peng wang Yunyun Yi xin Li Department of Center of Integrated Traditional Chinese and Western Medicine Peking University Ditan Teaching HospitalBeijing 100015China Department of Center of Integrated Traditional Chinese and Western Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Center of Infectious Disease Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

Objective The effect of the functionally unknown gene C6orf120 on autoimmune hepatitis was investigated on C6orf120 knockout rats(C6orf120^(-/-))and THP-1 *** Six–eight-week-old C6orf120^(-/-)and wild-type(WT)SD rats were injected with Con A(16 mg/kg),and euthanized after 24 *** sera,livers,and spleens were ***-1 cells and the recombinant protein(rC6ORF120)were used to explore the mechanism in *** frequency of M1 and M2 macrophages was analyzed using flow *** blotting and PCR were used to detect macrophage polarization-associated *** C6orf120 knockout attenuated Con A-induced autoimmune *** cytometry indicated that the proportion of CD68^(+)CD86^(+)M1 macrophages from the liver and spleen in the C6orf120^(-/-)rats decreased.C6orf120 knockout induced downregulation of CD86 protein and the mRNA levels of related inflammatory factors TNF-α,IL-1β,and IL-6 in the liver.C6orf120 knockout did not affect the polarization of THP-1 ***,rC6ORF120 promoted the THP-1 cells toward CD68^(+)CD80^(+)M1 macrophages and inhibited the CD68^(+)CD206^(+)M2 *** C6orf120 knockout alleviates Con A-induced autoimmune hepatitis by inhibiting macrophage polarization toward M1 macrophages and reducing the expression of related inflammatory factors in C6orf120^(-/-)rats.

关键词： C6orf120 Autoimmune hepatitis Macrophage polarization M1 macrophages

A ratiometric fluorescent probe for hypoxanthine detection in aquatic products based on the enzyme mimics and fluorescence of cobalt-doped carbon nitride

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Food Science and Human Wellness 2024年第2期13卷 879-884页

作者： xin wang Chengyi Hong Zhengzhong lin Zhiyong Huang College of Ocean Food and Biological Engineering Jimei UniversityXiamen 361021China

A ratiometric fluorescent probe for hypoxanthine(Hx)detection was established based on the mimic enzyme and fluorescence characteristics of cobalt-doped graphite-phase carbon nitride(Co doped g-C_(3)N_(4)).In addition to emitting strong fluorescence,the peroxidase activity of Co doped g-C_(3)N_(4)can catalyze the reaction of O-phenylenediamine and H_(2)O_(2)to produce diallyl phthalate which can emit yellow fluorescence at 570 *** the decomposition of Hx by xanthine oxidase,Hx can be indirectly detected by the generating hydrogen peroxide based on the measurement of fluorescent ratio I(F_(570)/F_(370)).The linear range was 1.7-272.2 mg/kg(R^(2)=0.997),and the detection limit was 1.52 mg/kg(3σ/K,n=9).The established method was applied to Hx detection in bass,grass carp,and shrimp,and the data were verified by *** result shows that the established probe is sensitive,accurate,and reliable,and can be used for Hx detection in aquatic products.

关键词： Co doped g-C_(3)N_(4) Ratiometric fluorescent probe Hypoxanthine Freshness Aquatic products

MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium-ion capacitors

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 395-404页

作者： Ge Chu Chaohui wang Zhewei Yang lin Qin xin Fan College of Materials Science&Engineering Guilin University of TechnologyGuilin 541004China Institute of Energy Innovation College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China

The development of anode materials with high rate capability and long charge-discharge plateau is the key to improve per-formance of lithium-ion capacitors(LICs).Herein,the porous graphitic carbon(PGC-1300)derived from a new triply interpenetrated co-balt metal-organic framework(Co-MOF)was prepared through the facile and robust carbonization at 1300°C and washing by HCl *** as-prepared PGC-1300 featured an optimized graphitization degree and porous framework,which not only contributes to high plateau capacity(105.0 mAh·g^(−1)below 0.2 V at 0.05 A·g^(−1)),but also supplies more convenient pathways for ions and increases the rate capability(128.5 mAh·g^(−1)at 3.2 A·g^(−1)).According to the kinetics analyses,it can be found that diffusion regulated surface induced capa-citive process and Li-ions intercalation process are coexisted for lithium-ion ***,LIC PGC-1300//AC constructed with pre-lithiated PGC-1300 anode and activated carbon(AC)cathode exhibited an increased energy density of 102.8 Wh·kg^(−1),a power dens-ity of 6017.1 W·kg^(−1),together with the excellent cyclic stability(91.6%retention after 10000 cycles at 1.0 A·g^(−1)).

关键词： metal-organic framework porous graphitic carbon optimized plateau capacity kinetic analysis lithium-ion capacitor

Simple Predicting Method for Fatigue Crack Growth Rate Based on Tensile Strength of Carbon Steel

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Journal of Iron and Steel Research International 2003年第2期10卷 58-62页

作者： LI Bo HU Ji-fan QIN Hong-wei MA Nuo AN Kang wang xin-lin Central Iron and Steel Research Institute Shandong University

Three types of fatigue tests for an annealed carbon steel containing carbon of 0.42%were carried out on smooth specimens and specimens with a small blind hole in order to investigate the fatigue crack growth law.A simple predicting method for crack growth rates has been proposed involving strengthσband the relation between cyclic stress and *** validity of proposed method has been confirmed by experiments on several carbon steels with different loadings.

关键词： fatigue crack growth rate prediction stress gradient carbon steel

Effects of serum proteins on corrosion rates and product bioabsorbability of biodegradable metals

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Regenerative Biomaterials 2024年第1期3卷 132-148页

作者： Hongjie Zhang xin Li Zehua Qu Wanqian Zhang Qunsong wang Dinglingge Cao Yaoben wang xin wang Yang wang lin Yu Jiandong Ding State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200438China

Corrodible metals are the newest kind of biodegradable materials and raise a new problem of the corrosion ***,the removal of the precipitated products has been unclear and even largely ignored in ***,we find that albumin,an abundant macromolecule in serum,enhances the solubility of corrosion products of iron in blood mimetic Hank’s solution *** is universal for other main biodegradable metals such as magnesium,zinc and polyester-coated *** also influences corrosion rates in diverse trends in Hank’s solution and normal *** on quantitative study theoretically and experimentally,both the effects on corrosion rates and soluble fractions are interpreted by a unified mechanism,and the key factor leading to different corrosion behaviors in corrosion media is the interference of albumin to the Ca/P passivation layer on the metal *** work has illustrated that the interactions between metals and media macromolecules should be taken into consideration in the design of the next-generation metal-based biodegradable medical devices in the formulism of precision *** improved Hank’s solution in the presence of albumin and with a higher content of initial calcium salt is suggested to access biodegradable metals potentially for cardiovascular medical devices,where the content of calcium salt is calculated after consideration of chelating of calcium ions by albumin,resulting in the physiological concentration of free calcium ions.

关键词： biodegradable metal macromolecule albumin corrosion bioabsorbability iron polylactide magnesium zinc

光动力疗法辅助治疗慢性牙周炎对牙龈卟啉单胞菌的影响

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北京口腔医学 2024年第1期32卷 25-29页

作者：王新林王冬青姜亦洋范亚贤季瑾首都医科大学口腔医学院牙周科北京100050 首都医科大学口腔医学院特诊特需科北京100050

目的评估抗微生物光动力疗法(aPDT)辅助龈下刮治和根面平整术(SRP)对牙龈卟啉单胞菌(Porphyromonas gingivalis,P.g)检出率的影响。方法选取慢性牙周炎患者32人,随机分为实验组(光动力组)(16例)和对照组(16例),实验组进行龈下刮治和根... 详细信息

目的评估抗微生物光动力疗法(aPDT)辅助龈下刮治和根面平整术(SRP)对牙龈卟啉单胞菌(Porphyromonas gingivalis,P.g)检出率的影响。方法选取慢性牙周炎患者32人,随机分为实验组(光动力组)(16例)和对照组(16例),实验组进行龈下刮治和根面平整+光动力疗法,对照组进行龈下刮治和根面平整术,评价基线、治疗后3、6个月的微生物指标。采集龈下菌斑和唾液样本,对慢性牙周炎致病菌P.g进行聚合酶链式反应(polymerase chain reaction,PCR)检测,观察P.g菌的检出率。结果实验组和对照组在随访期的P.g阳性率均有所降低。对照组第3、6个月与基线相比,P.g阳性率改善不显著(P>0.05),但实验组无论在第3、6个月,与基线相比都显著降低(P<0.05),且在第3个月时两组间有统计学差异(P<0.05)。结论抗微生物光动力疗法辅助治疗慢性牙周炎可以更为有效地抑制P.g。

关键词：光动力疗法慢性牙周炎龈下刮治和根面平整术牙龈卟啉单胞菌

Fabrication and Characterization of NEMS

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Optoelectronics Letters 2007年第2期3卷 91-94页

作者： JIAO Ji-wei YANG Heng LI Tie LI xin-xin wang Yue-lin State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology（SIMIT） Chinese Academy of Sciences Shanghai 200050 China

We proposed a called“nano-fabrication based on MEMS technology”approach to realize the typical nano-electro- mechanical structures,such as integrated nano probe,ultrathin cantilever,silicon nano wire,and doubly clamped nano beam, to demonstrate the feasibility and *** also introduced the characterization of nano structures based on laser vibrometer and piezoresistive effect,the latter method was first time applied to investigate a doubly daped nanobeam with a thickness of about 200 nm.

关键词： NEMS 纳米级机电结构制造特征 MEMS技术

Efficient piezo-catalytic dye degradation using piezoelectric 6H-SiC under harsh conditions

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Rare Metals 2024年第7期43卷 3173-3184页

作者： lin-lin Zhou Tao Yang Kang wang Lai-Pan Zhu En-Hui wang Kuo-Chih Chou Hai-Long wang xin-Mei Hou Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110000China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Materials Science Engineering Zhengzhou UniversityZhengzhou 450001China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing University of Science and TechnologyBeijing 100083China

The development of novel piezoelectric catalysts against harsh conditions is indeed crucial for improving the piezo-catalytic degradation efficiency of colored organic dyes in *** this work,6H-SiC nanoparticles(NPs)are utilized to piezo-catalytic degrade rhodamine B(RhB)and methylene blue(MB)under ultrasonic vibration for the first *** degradation efficiency of RhB and MB reaches 98.8%and 98.7%within 80 *** piezoelectricity of 6H-SiC is comprehensively analyzed by the piezoresponse force microscope(PFM)and finite element method(FEM).The strong oxidizing active free radicals generated by the continuous piezoelectric polarized electric field of 6H-SiC,i.e.,·O_(2)^(-)and·OH,induce the decomposition reactions of colored organic dyes in *** the dyes are proven to degrade to harmless or less-harmful products gradually during the piezo-catalysis process by high-performance liquid chromatography tandem mass spectrometry(HPLC-MS).Moreover,RhB is also decomposed efficiently by 6HSiC NPs under acidic and alkaline *** results prove the feasibility of 6H-SiC for decomposing common water pollutants under harsh conditions and provide a new perspective for water purification.

关键词： Piezo-catalytic degradation 6H-SiC Rhodamine B(RhB) Methylene blue(MB) Harsh conditions