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三种镍基合金显微组织及性能的对比研究 被引量:3
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作者 陈蕊 包翠敏 +3 位作者 孟冬梅 谭朝鑫 杨智鹏 邱娟 《风机技术》 2018年第5期84-88,共5页
对三种镍基合金材料Inconel 625、Inconel 625plus及Inconel 718的元素含量、显微组织及性能进行对比研究。结果表明:Inconel 625合金的主要沉淀强化相为少量γ'(Ni3(Al、Ti)),Inconel 625plus合金的主要沉淀强化相为大量γ'(Ni... 对三种镍基合金材料Inconel 625、Inconel 625plus及Inconel 718的元素含量、显微组织及性能进行对比研究。结果表明:Inconel 625合金的主要沉淀强化相为少量γ'(Ni3(Al、Ti)),Inconel 625plus合金的主要沉淀强化相为大量γ'(Ni3(Ti)),而Inconel 718合金的主要沉淀强化相为体心四方结构的γ"相(Ni3Nb),同时辅以面心立方结构的弱强化相γ'(Ni3(Al、Ti));Inconel 625,Inconel 625plus和Inconel 718室温下屈服强度分别为450MPa,900MPa和1 050MPa,同时其具有良好的塑性和韧性数据。在工程应用中较高温度下,Inconel 625plus及Inconel 718合金的屈服强度分别为815MPa和785MPa,同时具有良好的塑性和韧性指标。 展开更多
关键词 Inconel625 Inconel625plus INCONEL718 性能
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乙型肝炎后肝硬化并发原发性肝癌患者乙型肝炎病毒定量检测的临床意义 被引量:34
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作者 杨美荣 孟冬梅 方正亚 《中国现代医学杂志》 CAS 2019年第1期76-79,共4页
目的探讨乙型肝炎后肝硬化并发原发性肝癌患者的乙型肝炎病毒指标定量检测的变化,以期为乙型肝炎后肝癌的早期诊断提供临床指导意义。方法采用回顾性分析方法,选取2015年2月—2016年2月在华北理工大学附属医院及唐山市传染病医院住院的... 目的探讨乙型肝炎后肝硬化并发原发性肝癌患者的乙型肝炎病毒指标定量检测的变化,以期为乙型肝炎后肝癌的早期诊断提供临床指导意义。方法采用回顾性分析方法,选取2015年2月—2016年2月在华北理工大学附属医院及唐山市传染病医院住院的乙型肝炎后肝硬化并发肝癌的患者59例,选择82例同期住院的单纯乙型肝炎后肝硬化患者作为对照。分析两组乙肝病毒标志物HBsAg、HBsAb、HBeAg、HBeAb、HBV DNA的差异。结果肝硬化并发肝癌组HBsAg、HBeAg的含量低于单纯肝硬化组,差异有统计学意义(P <0.05),两组患者HBsAb、HBeAb及HBV DNA的含量差异无统计学意义(P>0.05)。结论随着乙型肝炎后肝硬化病情的进展,HBsAg、HBeAg含量可能会逐渐降低,但这并不意味着病情得到控制或好转,有可能进展为肝癌,所以对病毒载量较低的乙型肝炎后肝硬化患者仍需积极抗病毒治疗,且应至少3个月复查1次乙型肝炎病毒标志物定量检测,以提高早期肝癌的检出率。 展开更多
关键词 肝炎 乙型 肝硬化 肝肿瘤 乙肝表面抗原 乙肝E抗原
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HBeAg阳性与阴性乙型肝炎肝硬化患者乙肝病毒载量及肝功能指标的研究 被引量:22
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作者 张国顺 孟冬梅 +1 位作者 方正亚 刘斌 《中国现代医学杂志》 CAS 2018年第16期48-51,共4页
目的探讨乙肝e抗原(HBeAg)阳性与阴性乙型肝炎肝硬化患者病毒载量及肝功能指标的差异并分析其临床意义。方法采用回顾性分析方法,收集2015年2月-2016年2月在该院住院的乙型肝炎肝硬化患者270例,分析HBeAg阳性(124例)和HBeAg阴性(146例)... 目的探讨乙肝e抗原(HBeAg)阳性与阴性乙型肝炎肝硬化患者病毒载量及肝功能指标的差异并分析其临床意义。方法采用回顾性分析方法,收集2015年2月-2016年2月在该院住院的乙型肝炎肝硬化患者270例,分析HBeAg阳性(124例)和HBeAg阴性(146例)乙型肝炎肝硬化患者的乙肝表面抗原(HBsAg)、HBV DNA、肝功能指标(ALT、AST、TBIL、ALB)的差异及不同HBV DNA载量的构成比。结果 HBe Ag阳性组HBsAg、HBV DNA、ALT、AST的含量与HBe Ag阴性组比较,差异有统计学意义(P<0.05),HBeAg阳性组均高于HBeAg阴性组的患者;两组间TBIL、ALB的比较,差异无统计学意义(P>0.05)。HBeAg阳性组HBV DNA<103 IU/ml及103~105 IU/ml患者的比例均低于HBeAg阴性组;HBeAg阳性组HBV DNA>105 IU/ml患者的比例高于HBe Ag阴性组,两组间HBV DNA水平的构成比差异有统计学意义(P<0.05)。结论随着乙肝肝硬化患者体内HBeAg的血清学转换,乙肝病毒复制水平降低,肝脏炎症反应减弱,但并不意味着病情得到控制,有可能肝脏损害逐渐加重,仍需积极抗病毒治疗。 展开更多
关键词 乙型肝炎肝硬化 乙肝E抗原 乙肝病毒DNA 肝功能
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Analysis of influencing factors of chronic hepatitis B complicated with nonalcoholic fatty liver disease
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作者 Guo-Shun Zhang Sheng-Nan Li +2 位作者 dong-mei meng Zheng-Ya Fang Bin Liu 《Journal of Hainan Medical University》 2019年第15期10-14,共5页
Objective:To investigate the influencing factors of chronic hepatitis B with nonalcoholic fatty liver disease,and to provide a reference for screening and clinical treatment of high-risk groups.Methods:A case-control ... Objective:To investigate the influencing factors of chronic hepatitis B with nonalcoholic fatty liver disease,and to provide a reference for screening and clinical treatment of high-risk groups.Methods:A case-control study was conducted.According to the inclusion and exclusion criteria,133 cases of newly diagnosed patients with CHB combined with NAFLD were enrolled in the Affiliated Hospital of North China University of Technology and Tangshan Infectious Disease Hospital from January 2015 to January 2018.139 cases of newly diagnosed patients with CHB diagnosed in the same period were selected as the control group.The clinical data,initial laboratory examination and imaging findings of the two groups of patients were compared to analyze the influencing factors of chronic hepatitis B combined with nonalcoholic fatty liver disease.Results:1 The BMI,ALT,AST,GGT,FBG,TG and CAP in the case group were significantly higher than those in the control group,the difference was statistically significant(P<0.05).The control group HDL-C,HBcAb,type III procollagen amino terminal peptide,The type IV collagen,laminin and LSM were higher than the case group,the difference was statistically significant(P<0.05).The case group was more likely to be associated with complications,and the difference was statistically significant(P=0.01).2 Univariate analysis showed that About the author:Zhang Guoshun,male,chief physician,professor,master's tutor,doctoral,mainly engaged in research and prevention of liver diseases,13930565676,zguoshun@sina.com.Fund Project:China Hepatitis Prevention Foundation Funded Project(No.:TQGB20170015);Hebei Province Medical Science Research Key Project(No.20170933);North China University of Technology Graduate Innovation Project(No.2019S49)patients in the case group had BMI≥25Kg/m2,GGT>45U/L,type IV collagen≤140ng/ml,laminin≤140ng/ml,CAP≥283dB/m,hyperglycemia,high glycerol The proportion of patients with lipemia was significantly higher than that of the control group,the difference was statistically significant(P<0.05);3 binary logistic regression analysis showed that GGT,FBG,BMI,laminin,CAP were predictive of chronic hepatitis B combined with non-An effective indicator of alcoholic fatty liver disease.Conclusion 1GGT,BMI,FBG,laminin and CAP are the influencing factors of CHB combined with NAFLD.The occurrence of 2NAFLD is closely related to obesity,hyperglycemia and hypertriglyceridemia.The HBcAb and liver fibrosis indexes are decreased when CHB combined with NAFLD,and the mechanism is still unclear. 展开更多
关键词 Chronic HEPATITIS B NONALCOHOLIC FATTY LIVER disease Influencing factors LIVER FIBROSIS
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