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基于中医轴-轮理论的肠道菌群研究进展 被引量:2
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作者 李吉武 余丽华 +1 位作者 陈梦子 李双蕾 《中国中医药现代远程教育》 2022年第9期198-201,共4页
中医圣哲认为升降运动是自然与人根本的存在形式,升降运动具体表现以中气(脾土)作轴枢,肝、心、肺、肾使四维轮用,形成了中医“四时五脏”的“轴-轮”时空观。人体大量肠道菌群与宿主共生存,形成了平衡的肠道微生态稳定结构。因机体内... 中医圣哲认为升降运动是自然与人根本的存在形式,升降运动具体表现以中气(脾土)作轴枢,肝、心、肺、肾使四维轮用,形成了中医“四时五脏”的“轴-轮”时空观。人体大量肠道菌群与宿主共生存,形成了平衡的肠道微生态稳定结构。因机体内外环境的改变,可导致肠道微生态系统失调。肠道菌群及其代谢产物紊乱破坏机体肠道屏障,增加肠道通透性,发生炎症免疫等反应,从而促进各系统疾病的发生。目前研究肠道菌群通过肠-X轴作用与心、肝、肺、肾等疾病有密切关联性。文章对中医“轴-轮”理论进行浅探,综述肠道菌群相关的研究进展。对其深入研究,不断认识到肠-X轴学说的作用,这与中医“中轴-四轮”理论有异曲同工之处,为中医“轴-轮”理论与肠道菌群作用提供合理参考价值。 展开更多
关键词 轴-轮理论 肠道菌群 元气升降 综述
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Research on meshing theory of noninvolute beveloid gears 被引量:2
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作者 李瑰贤 温建民 +2 位作者 李笑 刘福利 刘宇 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2003年第2期154-156,共3页
A mathematical model has been developed using the space engagement theory and the differential geometry for the line contact of noninvolute beveloid gears with intersecting axes with their tooth profile equations and ... A mathematical model has been developed using the space engagement theory and the differential geometry for the line contact of noninvolute beveloid gears with intersecting axes with their tooth profile equations and engagement equations established for the first time and their meshing theory analysed. It can be seen from the fact that the tooth profile equation finally derived is no longer a standard involute helicoid and standard involute beveloid gears with intersecting axes have no way to satisfy the line contact requirement. However, the noninvdute beveloid gears derived in this paper satisfy the line contact requirement very well. All these work will inevitably facilitate further investigations into gear tooth generation, stiffness, backlash and efficiency of transmission. 展开更多
关键词 noninvolute beveloid gears intersecting axes line contact
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