Galvanic corrosion behavior of AZ91D alloy/45 steel couple in 3.5 wt.%NaCl solution under 0,0.2 and 0.4 T magnetic field were studied by microstructure observation,immersion test and electrochemical measurement.The mi...Galvanic corrosion behavior of AZ91D alloy/45 steel couple in 3.5 wt.%NaCl solution under 0,0.2 and 0.4 T magnetic field were studied by microstructure observation,immersion test and electrochemical measurement.The mixed potential theory was used to estimate the galvanic current density and the mixed potential of the galvanic corrosion between AZ91D alloy and 45 steel.The results indicated that magnetic field could accelerate the corrosion of AZ91D alloy,and impede the corrosion process of 45 steel.The effect of magnetic field on corrosion sensibility and corrosion rate of these two alloys increased as the intensity rising.The galvanic corrosion rate of the couple was accelerated by magnetic field.With the magnetic field intensity rising,the galvanic corrosion sensibility and corrosion rate of the couple increased.The effects of magnetic field on the galvanic corrosion performance of the couple and the corrosion behavior of AZ91D alloy and 45 steel were due to the appearance of field gradient force and magnetohydrodynamic(MHD)force.The mixed potential theory has a certain accuracy to estimate the Ecouple and icouple values in this work.展开更多
目的了解近二十年糖尿病缓解领域的研究现状、热点与趋势。方法检索自建库至2022年4月1日Web of Science核心数据库中糖尿病缓解主题相关文章,运用CiteSpace 5.8.R3软件对主题相关文章的发文国家、发文机构、发文作者、被引情况、关键...目的了解近二十年糖尿病缓解领域的研究现状、热点与趋势。方法检索自建库至2022年4月1日Web of Science核心数据库中糖尿病缓解主题相关文章,运用CiteSpace 5.8.R3软件对主题相关文章的发文国家、发文机构、发文作者、被引情况、关键词等进行可视化分析。结果糖尿病缓解相关文章共2233篇,发文量整体呈稳步上升趋势。其中,发文量排名前5的国家分别是美国、中国、英国、意大利和印度;发文量排名前5的机构分别是哈佛大学、中国台湾敏盛综合医院、克里夫兰诊所、上海交通大学和华盛顿大学医院;发文量排名前5的作者分别是Weijei Lee(55篇)、Yichih Lee(31篇)、Shuchun Chen(30篇)、Konghan Ser(28篇)、Keong Chong(27篇),形成以Weijei Lee、Josep Vidal、Andres Sanchezpernaute、David E Cummings、Anita Courcoulas等学者为核心的团队,其中以Weijei Lee为核心的团队发文量最高,团队内作者合作较为紧密,团队间的交流合作较少。文献共被引分析结果示:排名前10的高被引文献的作者中,5名来自美国;排名前10的高被引文献的研究主题均与减重手术有关;排名前5的共被引期刊为《Diabetes Care》《The New England Journal of Medicine》《diabetes》《Diabetologia》《Obesity Surgery》。关键词分析结果显示:排名前20的关键词中,减重手术、减重、肥胖、胰岛素抵抗、病态肥胖、体质量指数、重量等均与减重和肥胖有关,其他关键词与结局指标和风险因素有关;长期缓解、生活方式干预是现阶段热点词汇;从1999年至2008年,糖尿病缓解研究集中在1型糖尿病,从2009年起,糖尿病缓解研究逐渐集中在2型糖尿病。结论糖尿病缓解研究领域是学者研究的热点,美国在糖尿病缓解领域具有强大的科研实力,各团队之间的合作与交流需加强。糖尿病缓解领域的研究热点是超重、肥胖人群和减重策略,2型糖尿病缓解生活方式干预和2型糖尿病缓解的长期效果是未来的研究趋势。当前对糖尿病缓解的研究还不够全面,1型糖尿病的缓解策略还在探索中。展开更多
基金funded by“National Science Foundation of China(51909071)Natural Science Foundation of Jiangsu Province(BK20190493)+1 种基金the Fundamental Research Funds for the Central Universities(B220202040)Open Fund of Jiangsu Technical Center for Wind Energy Engineering(ZK22-03-08).”。
文摘Galvanic corrosion behavior of AZ91D alloy/45 steel couple in 3.5 wt.%NaCl solution under 0,0.2 and 0.4 T magnetic field were studied by microstructure observation,immersion test and electrochemical measurement.The mixed potential theory was used to estimate the galvanic current density and the mixed potential of the galvanic corrosion between AZ91D alloy and 45 steel.The results indicated that magnetic field could accelerate the corrosion of AZ91D alloy,and impede the corrosion process of 45 steel.The effect of magnetic field on corrosion sensibility and corrosion rate of these two alloys increased as the intensity rising.The galvanic corrosion rate of the couple was accelerated by magnetic field.With the magnetic field intensity rising,the galvanic corrosion sensibility and corrosion rate of the couple increased.The effects of magnetic field on the galvanic corrosion performance of the couple and the corrosion behavior of AZ91D alloy and 45 steel were due to the appearance of field gradient force and magnetohydrodynamic(MHD)force.The mixed potential theory has a certain accuracy to estimate the Ecouple and icouple values in this work.
文摘目的了解近二十年糖尿病缓解领域的研究现状、热点与趋势。方法检索自建库至2022年4月1日Web of Science核心数据库中糖尿病缓解主题相关文章,运用CiteSpace 5.8.R3软件对主题相关文章的发文国家、发文机构、发文作者、被引情况、关键词等进行可视化分析。结果糖尿病缓解相关文章共2233篇,发文量整体呈稳步上升趋势。其中,发文量排名前5的国家分别是美国、中国、英国、意大利和印度;发文量排名前5的机构分别是哈佛大学、中国台湾敏盛综合医院、克里夫兰诊所、上海交通大学和华盛顿大学医院;发文量排名前5的作者分别是Weijei Lee(55篇)、Yichih Lee(31篇)、Shuchun Chen(30篇)、Konghan Ser(28篇)、Keong Chong(27篇),形成以Weijei Lee、Josep Vidal、Andres Sanchezpernaute、David E Cummings、Anita Courcoulas等学者为核心的团队,其中以Weijei Lee为核心的团队发文量最高,团队内作者合作较为紧密,团队间的交流合作较少。文献共被引分析结果示:排名前10的高被引文献的作者中,5名来自美国;排名前10的高被引文献的研究主题均与减重手术有关;排名前5的共被引期刊为《Diabetes Care》《The New England Journal of Medicine》《diabetes》《Diabetologia》《Obesity Surgery》。关键词分析结果显示:排名前20的关键词中,减重手术、减重、肥胖、胰岛素抵抗、病态肥胖、体质量指数、重量等均与减重和肥胖有关,其他关键词与结局指标和风险因素有关;长期缓解、生活方式干预是现阶段热点词汇;从1999年至2008年,糖尿病缓解研究集中在1型糖尿病,从2009年起,糖尿病缓解研究逐渐集中在2型糖尿病。结论糖尿病缓解研究领域是学者研究的热点,美国在糖尿病缓解领域具有强大的科研实力,各团队之间的合作与交流需加强。糖尿病缓解领域的研究热点是超重、肥胖人群和减重策略,2型糖尿病缓解生活方式干预和2型糖尿病缓解的长期效果是未来的研究趋势。当前对糖尿病缓解的研究还不够全面,1型糖尿病的缓解策略还在探索中。