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Acta Metallurgica Sinica(English Letters) 2021年第9期34卷 1223-1233页

作者： jian-Bin Zhan Yan-jin lu jin-Xin Lin College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

In this study, the infl uence of laser remelting on the relative density, martensitic transformation temperatures(MTTs), and mechanical properties of a NiTi alloy fabricated by selective laser melting(SLM) at a laser power between 15 and 75 W were investigated. A relative alloy density of approximately 99% was achieved in the power range of 45–60 W corresponding to the forming energy density range of 65.45–87.27 J/mm3. The MTTs increased with the increase in the energy density;thus, the initial contents of the B2 and B19′ phases of the SLM-produced NiTi alloy can be tailored by the utilized technique. However, the number of defects such as metallurgical pores and microcracks considerably increased at higher energy densities(> 87.27 J/mm3). Interestingly, the concentration of these defects was reduced by remelting in the energy density range of 21.82–65.45 J/mm3, while the alloy relative density increased to 99.7% ± 0.1% at a remelting energy density of 65.45 J/mm3. The results of tensile testing revealed that when the remelting energy was 75% or 100% of the forming energy input, the ultimate tensile strength and elongation of the alloy significantly increased. Therefore, the remelting strategy represents a promising route for manufacturing NiTi alloys with desired MTT ranges and mechanical properties.

关键词： Selective laser melting NiTi alloy Laser remelting Martensitic transformation temperature

考虑场地效应的多点地震动作用下边坡永久位移分析

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岩土工程学报 2025年第1期47卷 65-75页

作者：宋健潘驭航陆朱汐姬建张飞高玉峰河海大学岩土力学与堤坝工程教育部重点实验室江苏南京210024 河海大学土木与交通学院江苏南京210024

地震动引起的边坡土层非线性动力响应可能导致坡体不同位置的地震动加速度时程不一致,从而对整个滑动体的极限平衡状态及之后的地震累积永久位移产生影响。为了研究场地效应对边坡地震永久位移的影响,基于极限平衡条分法,通过对不同土... 详细信息

地震动引起的边坡土层非线性动力响应可能导致坡体不同位置的地震动加速度时程不一致,从而对整个滑动体的极限平衡状态及之后的地震累积永久位移产生影响。为了研究场地效应对边坡地震永久位移的影响,基于极限平衡条分法,通过对不同土条赋予不同的水平和竖向地震动时程,推导出一种考虑场地效应的圆弧和任意形状滑面的多点地震作用下边坡永久位移分析方法。通过与有限差分软件FLAC的数值模拟结果进行对比,验证了该方法能够合理考虑地震动的场地效应。通过研究不同分布形式的多点地震动及竖向地震动对边坡永久位移的影响,结果表明:场地效应引起的水平地震动放大以及多点地震动不同分布模式会导致整个滑体平均地震惯性力作用位置发生改变,从而影响地震作用下滑动体沿滑面的永久变形量,竖向地震动对边坡地震位移影响较小。将方法应用于Lexington土石坝震后变形案例分析,计算得到的坝坡地震永久位移与实际震后观测值相吻合,证明了考虑场地效应的重要性及本文方法的合理性。

关键词：地震边坡稳定性场地效应永久位移极限平衡条分法多点地震动

桔梗多糖对环磷酰胺诱导的免疫抑制小鼠的免疫调节

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食品与机械 2012年第3期28卷 112-114页

作者：贾林陆金健周文雅施佳杰沃兴德浙江中医药大学生命科学学院浙江杭州310053

研究桔梗多糖(PPS80)对环磷酰胺(CTX)所致免疫抑制小鼠的免疫调节作用。将60只雄性KM小鼠随机分为正常组、模型组、桔梗多糖低、中、高剂量治疗组(100,200,400mg/(kg.d))和盐酸左旋咪唑(LMS)阳性组。连续3d腹腔注射环磷酰胺80mg/(kg.d)... 详细信息

研究桔梗多糖(PPS80)对环磷酰胺(CTX)所致免疫抑制小鼠的免疫调节作用。将60只雄性KM小鼠随机分为正常组、模型组、桔梗多糖低、中、高剂量治疗组(100,200,400mg/(kg.d))和盐酸左旋咪唑(LMS)阳性组。连续3d腹腔注射环磷酰胺80mg/(kg.d)建立免疫抑制小鼠模型,于给药治疗1周后利用称重法检测胸腺指数和脾脏指数,ELISA法测定血清白介素-2(IL-2)和肿瘤坏死因子-α(TNF-α)含量。结果表明,桔梗多糖能明显增加环磷酰胺诱导的免疫抑制小鼠的胸腺指数和脾脏指数,显著提高血清中IL-2和TNF-α的含量并呈剂量依赖性。桔梗多糖对环磷酰胺诱导的免疫抑制小鼠具有免疫增强调节作用。

关键词：桔梗多糖免疫增强白介素-2 肿瘤坏死因子-α

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肿瘤生物学研究热点与抗肿瘤中药研发策略

中国中药杂志 2015年第17期40卷 3416-3422页

作者：陈修平唐正海石哲陆金健苏焕兴陈新王一涛中药质量研究国家重点实验室澳门大学中华医药研究院中国澳门999078

肿瘤生物学研究近年来取得长足进展,肿瘤免疫、肿瘤干细胞、细胞自噬、上皮-间质转化等已成为肿瘤学研究热点。对这些肿瘤生物过程的详尽阐明,为这种多因素导致细胞异常增殖,发病率和死亡率均居重大疾病之首肿瘤疾病治疗,也为抗肿瘤中... 详细信息

肿瘤生物学研究近年来取得长足进展,肿瘤免疫、肿瘤干细胞、细胞自噬、上皮-间质转化等已成为肿瘤学研究热点。对这些肿瘤生物过程的详尽阐明,为这种多因素导致细胞异常增殖,发病率和死亡率均居重大疾病之首肿瘤疾病治疗,也为抗肿瘤中药的药理评价、原理阐明和创新药研发提供了提供了新的靶标、新的契机与新的研究策略。

关键词：肿瘤中药肿瘤免疫细胞自噬肿瘤干细胞上皮-间质转化

Microstructure Evolution and Mechanical Properties of a SMATed Mg Alloy under In Situ SEM Tensile Testing

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Journal of Materials Science & Technology 2017年第3期33卷 224-230页

作者： Xiaowei Liu Yong Liu Bin jin Yang lu jian lu 1 CentreforAdvanced Structural Materials(CASM) Department of Mechanical and Biomedical EngineeringCity University ofHong KongKowloonHong KongChina Key Laboratory of Near Net Forming of jiangxi Province Nanchang UniversityNanchang 330031China Shenzhen Research Institute City University of HongKongShenzhen 518057China

Surface mechanical attrition treatment（SMAT） has been recently applied to bulk polycrystalline magnesium（Mg） alloys with gradient grain size distribution from the impact surface to inside matrix, hence effectively improving the alloys＇ mechanical performances. However, in-depth understanding of their mechanical property enhancement and grain size-dependent fracture mechanism remains unclear. Here,we demonstrated the use of in situ micro-tensile testing inside a high resolution scanning electron microscope（SEM） to characterize the microstructure evolution, in real time, of SMATed Mg alloy AZ31 samples with different grain sizes of ~10 μm（＇coarse-grain sample＇） and ~5 μm（＇fine-grain sample＇）, respectively, and compared the results with those of a raw Mg alloy AZ31. The quantitative tensile tests with in situ SEM imaging clearly showed that fracture of ‘fine-grain sample＇ was dominated by intergranular cracks,while both trans-granular and intergranular cracks led to the final failure of the ‘coarse-grain samples＇.It is expected that this in situ SEM characterization technique, coupled with quantitative tensile testing method, could be applicable for studying other grain-refined metals/alloys, allowing to optimize their mechanical performances by controlling the grain sizes and their gradient distribution.

关键词： Surface mechanical attrition treatment(SMAT) Mg alloy Mechanical property In situ SEM Microstructure characterization

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中国特色自贸港立法权行使路径研究

国际商务研究 2025年第1期46卷 101-114页

作者：刘云亮卢晋海南大学海南海口570228

中国特色自贸港实施开放型经济新体制,亟需高水平开放、高质量发展的法治创新保障。自贸港立法权行使不仅需要创新自贸港法规内容体系,而且更需要创新自贸港立法路径,这充分彰显自贸港改革开放与立法创新法治保障的良性互动关系,尤其凸... 详细信息

中国特色自贸港实施开放型经济新体制,亟需高水平开放、高质量发展的法治创新保障。自贸港立法权行使不仅需要创新自贸港法规内容体系,而且更需要创新自贸港立法路径,这充分彰显自贸港改革开放与立法创新法治保障的良性互动关系,尤其凸显自贸港立法权行使路径创新与自贸港法规体系构建的新颖性。自贸港法规制定权、调法调规变通权和自贸港立法授权成为自贸港立法权行使路径创新渠道,促成自贸港立法权能拓展新内容。自贸港法规制定权需要对标国际经贸规则。自贸港调法调规聚焦适用具有更多实用性和先行性的领域。自贸港立法权行使不仅聚焦自贸港法规内容的制度型开放,立法内容致力于促进高水平开放和高质量发展,而且注重自贸港法规的合宪性与改革创新相融合的立法监督机制协同推进。敢于变通和创制立法,遵循立法授权,成为自贸港立法权行使路径规制,更是当下加快实现封关运作的立法及调法调规的需要,确保自贸港扩大制度型开放、融入国际高水平自贸网络的法治保障。

关键词：自贸港高水平开放立法创新调法调规

Tuning the porosity of {Co12IICo8III（μ3-OH）24（X）}11+ supramolecular frameworks by reaction time for D2/H2 separation

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Science China Chemistry 2025年

作者： Zhuozhou Xie Zhu Zhuo Zi-Ang Nan Qing Li Xiufang Li Zi-Xiu lu Linzhe Lü jin Liu luyao Liu Wenjing Wang Wei Wang Daqiang Yuan You-Gui Huang State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi InstitutesChinese Academy of Sciences State Key Laboratory of Physical Chemistry of Solid Surfaces Department of Chemistry College of Chemistry and Chemical EngineeringXiamen University

Systematicly tuning the porosities of porous materials is crucial for targeted gas mixture separation,yet it remains a longstanding *** a common strategy,altering the phenylene ring count in the organic building units has been exploited to adjust pore apertures in metal organic frameworks （MOFs） and covalent organic frameworks （COFs）,resulting in only a stepwise pore size variation of approximately 2.8?.Unlike MOFs and COFs,the porosities for supramolecular assembly frameworks are highly dependent on the packings of the molecular building units in the *** above strategy cannot be applied to supramolecular assembly frameworks and other strategies are required to adjust pore apertures in supramolecular frameworks,especially to achieve porous materials with the optimal pore size for D2/H2separation （～3?）.Here,we successfully modulate the porosity of supramolecular frameworks of[CoII1+12CoIII8L12（μ3-OH）24（X）]1clusters （L=mono-deprotonated 1-iminoisoindole-3-amine,X=ClO?4or Cl?） by controlling the duration of self-assembly *** simply adjusting the reaction time,we obtain three[CoII12CoIII8L12（μ3-OH）24（X）]11+supramolecular frameworks:[CoII12CoIII8（μ3-OH）24（ClO4）L12)]·（Cl）4·（HCO2）7（1）,[CoII12CoIII8L12（μ3-OH）24（Cl）]·（ClOI4）4·（Cl）6·（HCO2）·（H2O）10（2）,and[CoI12CoIII8L12（μ3-OH）24（Cl）]·（Cl）11·（H2O）12（3）.The different stacking patterns of the[CoII12CoIII8L12（μ3-OH）24（X）]11+clusters in these frameworks lead to significantly varied stabilities and *** 1 exhibits permanent porosity with interconnected channels and maintains stability under harsh *** contrast,compound 2 is nearly nonporous,and compound 3 becomes unstable upon *** pores of compound 1 show higher affinity to D2than H2,and the pore aperture diameter of compound 1 （～3.06?） meets the optimal porosity for D2/***,compound 1 demonstrates moderate D2/H2separation at 77 K (retention time:～7 min/g for D2/H2/Ne （10/10/80 vol%） in a flow of 5 mL

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A Feasible Point Method with Bundle Modification for Nonsmooth Convex Constrained Optimization

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Acta Mathematicae Applicatae Sinica 2018年第2期34卷 254-273页

作者： jin-bao jian Chun-ming TANG lu SHI College of Mathematics and Information Science Guangxi University Nanning 530004 China College of Science Guangxi University of Nationalities Nanning 530007 China Xingjian College of Science and Liberal Arts Guangxi University Nanning 530005 China

In this paper, a bundle modification strategy is proposed for nonsmooth convex constrained min- imization problems. As a result, a new feasible point bundle method is presented by applying this strategy. Whenever the stability center is updated, some points in the bundle will be substituted by new ones which have lower objective values and/or constraint values, aiming at getting a better bundle. The method generates feasible serious iterates on which the objective function is monotonically decreasing. Global convergence of the algorithm is established, and some preliminary numerical results show that our method performs better than the standard feasible point bundle method.

关键词： nonsmooth optimization feasible point method bundle modification global convergence

Experimental Investigation on Starting Process of Supersonic Single-stage Air Ejector

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Journal of Thermal Science 2012年第4期21卷 348-353页

作者： Zou jian-jun Zhou jin lu Hui-qiang Hu Yong College of Aerospace and Material Engineering National University of Defense Technology Changsha 410073 China

This paper deals with experimental study of flow field of starting process in two-dimensional, single-stage supersonic ejector on different air total pressure. Schlieren pictures of flow field were taken, static pressure distribu-tions on side wall were measured. The obtained results show that, on critical pressure, the starting main shock waves in ejector oscillated back and forth between the second throat and the middle section of the mixing chamber, it causes the pressure in the second half of the mixing chamber acutely fluctuated .When the working pressure of the active flow is higher than the critical starting pressure, ejector starts normally and the inner flow-field of the mixing chamber keeps stable and the shock waves in the second throat have a certain degree of oscillation . After ejector starts, the operating pressure of the active flow may be lower than the starting pressure .

关键词： supersonic ejector start process flow-field shock waves

Effect of Surface Mechanical Attrition Treatment on Tribological Behavior of the AZ31 Alloy

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Journal of Materials Science & Technology 2016年第12期32卷 1245-1252页

作者： Shuangwu Xia Yong Liu Dongming Fu Bin jin jian lu Key Laboratory of Near Net Forming of jiangxi Province Nanchang University Department of Mechanical and Biomedical Engineering City University of Hong Kong Centre for Advanced Structural Materials Shenzhen Research InstituteCity University of Hong Kong

By surface mechanical attrition treatment（SMAT）,a gradient nano structure（GNS） from the surface to center was generated in the AZ31 alloy *** tribological behavior of AZ31 alloy with GNS was systematically investigated by using dry sliding tests,a 3D surface profile-meter and a scanning electron microscope equipped with an energy-dispersive *** experimental results indicate that the Mg alloy with GNS exhibits better wear resistance comparing to the as-received sample,which is associated to the alteration of wear mechanism at different sliding *** Mg alloy with GNS presents the wear mechanism of the abrasive wear at 0.05 m/s and the oxidative wear at 0.5 m/s,***,the GNS can effectively promote the reaction between the oxygen and worn surface,which leads to a compact oxidation layer at 0.5 m/*** effect of oxidation layer on the wear resistance of the Mg alloy was also discussed.

关键词： Magnesium alloy Surface mechanical attrition treatment Wear mechanism Oxidation layer