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热循环处理对(Gd_(0.9)Yb_(0.1))_(2.Zr_(2.O_(7)/Yb_(2.O_(3)稳定ZrO_(2.热障涂层力学性能的影响

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硅酸盐学报 2024年第7期52卷 2329-2340页

作者：何永香范习之迟光芳张伟左劲旅李沙杨波毛卫国长沙理工大学材料科学与工程学院长沙410114 高端装备先进涂层技术湖南省重点实验室长沙410114 湖南博云新材料股份有限公司长沙410205

新型掺杂改性的锆酸钆涂层材料有望成为下一代航空发动机热端部件的关键防热材料。采用大气等离子喷涂工艺,在Inconel 600基底上制备了(Gd_(0.9)Yb_(0.1))_(2.Zr_(2.O_(7)/Y_(2.O_(3)稳定ZrO_(2.(GYbZ/8YSZ)热障涂层,在1100℃完成了100... 详细信息

新型掺杂改性的锆酸钆涂层材料有望成为下一代航空发动机热端部件的关键防热材料。采用大气等离子喷涂工艺,在Inconel 600基底上制备了(Gd_(0.9)Yb_(0.1))_(2.Zr_(2.O_(7)/Y_(2.O_(3)稳定ZrO_(2.(GYbZ/8YSZ)热障涂层,在1100℃完成了100次热循环处理,系统分析了涂层成分、微观结构和力学性能的演变。结果表明,在喷涂前后和后期的热循环处理过程中,GYbZ材料结构稳定;在涂层界面产生了热生长氧化层,其逐渐增厚至2.μm;在50次热循环后,涂层弹性模量与硬度分别达到最大值182.01 GPa和9.13 GPa;高温原位压痕测试表明,在700℃后,GYbZ涂层表面高温硬度基本趋于稳定。经过不同次数热循环处理后,涂层残余应力变化范围为–41.02.–12..67 MPa,断裂韧性范围为0.93~2.02.MPa·m^(1/2.。系统地讨论了高温长时间热处理过程中GYbZ/8YSZ体系微观结构演变与力学性能的关联,为后续可靠性预测提供了重要的实验依据。

关键词：热障涂层氧化镱掺杂锆酸钆高温硬度断裂韧性残余应力

Evaluation of the anti-inflammatory activity of extract of Vernonia Amygdalina

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Asian Pacific Journal of Tropical Medicine 2010年第2期3卷 150-151页

作者： Georgewill OA Georgewill uo Department of Pharmacology and Toxicology Faculty of Basic Medical SciencesUniversity of Port Harcourt

Objective:To investigate the anti-inflammatory activity of the extract of Vernonia amygdalina (V.A).Methods:Inflammatory response was induced by topical application of croton oil dissolved in suitable vehicle on the rat *** 6 hrs,cutting out the ear quantitated the *** cut ear was weighed and the increase in weight relative to control group was ***:When co-applied with croton oil to the rat ear extract of *** a reduction in the inflammatory response when croton oil alone was applied to the rat *** extract produced(69.1 +2.0)%reduction of the inflammatory response produced by croton oil alone,lower than the reduction of the inflammatory response produced by acetyl salicylic acid[(71.1±2.0)%].Conclusions:This finding suggests that extract of *** antiinflammatory activity and may explain the usefulness of the leaves of this plant in the treatment of inflammatory disease conditions by traditional healers.

关键词： Inflammatory response Groton oil Acetyl salicylic acid Vernonia amygdalina

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制造商资金约束闭环供应链的回收及融资决策

数学的实践与认识 2024年第1期54卷 1-13页

作者：姚锋敏吴金闫颍洛滕春贤哈尔滨理工大学经济与管理学院黑龙江哈尔滨150080

针对由一个制造商和一个主导零售商组成的两阶段闭环供应链,研究制造商资金约束闭环供应链的回收及融资决策问题.构建了四种闭环供应链的决策模型,分析了不同回收模式及融资策略对闭环供应链成员及整体绩效的影响.研究发现,当采用零售... 详细信息

针对由一个制造商和一个主导零售商组成的两阶段闭环供应链,研究制造商资金约束闭环供应链的回收及融资决策问题.构建了四种闭环供应链的决策模型,分析了不同回收模式及融资策略对闭环供应链成员及整体绩效的影响.研究发现,当采用零售商信贷融资策略时,制造商和零售商都缺乏废旧品回收的能动性,且回收模式的不同并不影响闭环供应链最优融资策略的选择.无论哪一方作为回收主体,零售商信贷融资策略都更有利于增加闭环供应链成员利润.无论采用何种融资策略,制造商作为回收主体时更有利于提高闭环供应链的整体效益及废旧品回收率.

关键词：闭环供应链回收模式零售商主导资金约束融资决策

基于“三热”理论分析2.糖尿病中医证型与危险因素及糖脂代谢指标相关性

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中医药导报 2024年第9期30卷 47-50页

作者：郭晨希朱垚狄红杰南京中医药大学第二附属医院江苏南京210017 南京中医药大学江苏南京210029

目的:基于“三热”理论研究2.糖尿病(T2.M)的中医证型分布规律,并探讨中医证型与危险因素及糖脂代谢指标之间的相关性。方法:收集410例T2.M患者的四诊资料,确定中医证型,采集患者的一般资料、危险因素及糖脂代谢指标,分析T2.M的中医证... 详细信息

目的:基于“三热”理论研究2.糖尿病(T2.M)的中医证型分布规律,并探讨中医证型与危险因素及糖脂代谢指标之间的相关性。方法:收集410例T2.M患者的四诊资料,确定中医证型,采集患者的一般资料、危险因素及糖脂代谢指标,分析T2.M的中医证型分布特点及其与一般资料、危险因素和糖脂代谢指标的关系。结果:证型分布从高到低依次为瘀热证[48.78%(2.0/410)]、湿热证[2..80%(114/410)]、燥热证[2..41%(96/410)]。年龄、病程以瘀热证最高(P2.M证型,总体以瘀热证居多。湿热证的T2.M患者多存在不健康饮食和缺乏运动,并伴有超重、高胰岛素血症、高TG血症和胰岛素抵抗的临床问题;瘀热证T2.M患者多存在胰岛素缺乏,且年龄较大,病程较长。

关键词： 2.糖尿病 “三热论” 燥热证湿热证瘀热证危险因素糖脂代谢相关性分析

凤仙透骨草中东莨菪内酯的提取及纯化工艺研究

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时珍国医国药 2024年第7期35卷 1628-1632页

作者：孔淑霞郭明鑫李苑新广东药科大学中药学院广东广州516006 江苏大学附属宜兴医院药学部江苏宜兴214200

目的优选凤仙透骨草中东莨菪内酯的最佳提取工艺和纯化工艺并对其吸附机制进行研究。方法采用HPLC法测定东莨菪内酯的含量,基于正交试验设计法,考察提取温度、乙醇浓度、提取时间三个因素对东莨菪内酯含量的影响。对大孔树脂种类进行筛... 详细信息

目的优选凤仙透骨草中东莨菪内酯的最佳提取工艺和纯化工艺并对其吸附机制进行研究。方法采用HPLC法测定东莨菪内酯的含量,基于正交试验设计法,考察提取温度、乙醇浓度、提取时间三个因素对东莨菪内酯含量的影响。对大孔树脂种类进行筛选,优化东莨菪内酯的富集纯化工艺,并分析其吸附机制。结果超声提取凤仙透骨草中东莨菪内酯的最佳工艺为提取温度60℃,乙醇浓度为80%,提取时间30 min;HPD-100大孔树脂对东莨菪内酯具有较好的纯化能力,吸附动力学符合准二级动力学模型,等温吸附数据符合Freundich模型。最佳纯化工艺为上样量2.BV,上样流速4 BV/h,水洗脱用量3 BV,洗脱液乙醇浓度60%,洗脱流速4 BV/h,洗脱体积6 BV。此工艺得到的东莨菪内酯转移率为73.46%,纯度提高了7.64倍。结论优选出的超声提取和大孔树脂纯化东莨菪内酯的工艺稳定可靠。

关键词：凤仙透骨草东莨菪内酯纯化大孔树脂吸收动力学

Tensile behavior of Sn-0.7Cu with Zn addition at various deformation temperatures

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Acta Metallurgica Sinica(English Letters) 2011年第2期24卷 155-160页

作者： Zhongbing L uo Jie ZHAO Junshan ZHANG Lai WANG School of Materials Science and Engineering Dalian University of Technology Dalian 116085 China

The tensile behavior of Sn-0.7Cu and Sn-0.7Cu-1Zn was compared at various deformation temperatures. Refined microstructure and γ-CuZn particles were discovered with Zn addition. The strengths of Zn-containing solder were higher than that of Sn-0.7Cu at room and subzero temperatures. With the elevation of deformation temperature, they both decreased and they were nearly the same at 80 ？ C. The works of fracture exhibited the similar evolution law. For Sn-0.7Cu solder, the elongation after fracture was smaller and the reduction of area was bigger than those of Sn-0.7Cu-1Zn. This shows that Zn addition improved the deformation stability, which is attributed to the modification of the microstructure. Dimples in fracture surface became smaller and shallower with the decreasing temperature. Ductile fracture was discovered in all the samples.

关键词： Sn-0.7Cu Zn Tensile Temperature Strength Ductility Fracture

Anti-inflammatory effects of Morninga oleifera lam extract in rats

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Asian Pacific Journal of Tropical Medicine 2010年第2期3卷 133-135页

作者： Georgewill OA Georgewill uo Nwankwoala RNP Department of Pharmacology College of Health SciencesUniversity of Port Harcourt

Objective:To investigate the acute and delayed anti-inflammatory effects of Morning oleifera lam（MOL） crude methanolic ***:Compared the anti-inflammatory effects of MOL with that of standard anti-inflammatory agents like indomethacin and hydrocortisone using Air Pouch ***:In both acute and delayed inflammation,the MOL extract produced dose dependent anti-inflammatory effect[acute IC50=（399.30±5.43） mg/kg;delayed IC50=（510.2.±4.53） mg/kg].The order of anti-inflammatory potency for the three drugs was hydrocortisone> indomethacin > ***:These observations indicate that MOL possesses potential anti-inflammatory property.

关键词： Extract Moringa oleifera lam Anti-nflammatory,indomethacin Hydrocortisone

Effect of extract of Abrus precatorius on blood glucose concentration of alloxan induced diabetic Albino Wistar Rats

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Asian Pacific Journal of Tropical Medicine 2009年第6期2卷 16-17页

作者： Georgewill OA Georgewill uo Department of Pharmacology and Toxicology

Objective:To evaluate the effect of extract of Abrus precatorius on blood glucose of alloxan induced albino wistar ***:Experimental animals received daily oral administration of extract of Abrus precatorius for 14 *** effect of 2.0 mg/kg dose was studied during the treatment ***:There was a significant reduction in blood glucose concentration(P 2.for diabetic treated group. Conclusion:The findings of this study suggest that extract of Abrus precatorius has hypoglycemic effect.

关键词： Abrus precatorius Hypoglycemia Diabetes Hyperglycemia

Antiarthritic activity of Vernonia amygdalina in albino rats

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Asian Pacific Journal of Tropical Medicine 2009年第5期2卷 58-60页

作者： Georgewill OA Georgewill uo Department of Pharmacology and Toxicology Faculty of Basic Medical SciencesCollege of Health SciencesUniversity of Port HarcourtChobaNigeria

Objective:To evaluate the antiarthritic activity of water extract of leaves of Vernonia amygdalina(V.A.) on arthritis induced model of ***:Arthritis was induced in male albino Wister rats by injection of croton oil(0.1 mL) into the left foot pad of the *** with *** 2.0 and 400 mg/kg and standard Indomethacin(0.3 mg/kg) was started on the same day and continued up to the 12.h *** paw volume was measured on the 1st,5th,12.h and 2.st day,respectively for both the paws and anti-arthritic activity was ***:The extract of *** reduction in the inflammation of the paw due to croton *** antiarthritic action started on the 5th day and continued till the 12.h day and the activity was comparable to that of the standard on both *** inhibited adjuvant induced arthritis and had significant ant-inflammatory effect(P2.h day and may explain the effectiveness of this plant when used in the tropics for the treatment of arthritis.

关键词： Vernonia amygdalina Antiarthritic effect Croton oil