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平台运动对漂浮式风电机组气动功率和推力的影响研究 被引量:7
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作者 白雪峰 王晓东 +3 位作者 赵庆旭 潘其云 戴丽萍 叶昭良 《风机技术》 2022年第2期39-47,共9页
漂浮式风电机组存在平台六自由度运动,使得风电机组气动特性的非定常性显著。本文采用自由涡尾迹法对NREL 5MW风电机组的气动特性进行了模拟。为了能清晰比较单个平台运动对气动性能的影响,将浮式平台的纵摇、纵荡以及横摇运动简化为给... 漂浮式风电机组存在平台六自由度运动,使得风电机组气动特性的非定常性显著。本文采用自由涡尾迹法对NREL 5MW风电机组的气动特性进行了模拟。为了能清晰比较单个平台运动对气动性能的影响,将浮式平台的纵摇、纵荡以及横摇运动简化为给定的正弦函数,研究了不同振幅的平台纵荡、纵摇、横摇运动以及两者和三者之间耦合运动下风电机组的气动功率和推力变化。结果表明:浮式平台的运动会导致风电机组功率和推力的波动,平台纵摇运动影响最大,横摇运动的影响最小;较剧烈的耦合运动会显著增加平均发电量;平台三自由度耦合运动中,增大纵荡振幅可以增大平均功率输出,并减少平均推力。 展开更多
关键词 漂浮式风电机组 纵摇 横摇 纵荡 自由涡尾迹 功率 推力
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Competing endogenous RNA networks and gastric cancer 被引量:12
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作者 Lei-Lei Guo Chun-Hua Song +3 位作者 Peng Wang li-ping dai Jian-Ying Zhang Kai-Juan Wang 《World Journal of Gastroenterology》 SCIE CAS 2015年第41期11680-11687,共8页
Recent studies have showed that RNAs regulate each other with micro RNA(mi RNA) response elements(MREs) and this mechanism is known as "competing endogenous RNA(ce RNA)" hypothesis. Long noncoding RNAs(lnc R... Recent studies have showed that RNAs regulate each other with micro RNA(mi RNA) response elements(MREs) and this mechanism is known as "competing endogenous RNA(ce RNA)" hypothesis. Long noncoding RNAs(lnc RNAs) are supposed to play important roles in cancer. Compelling evidence suggests that lnc RNAs can interact with mi RNAs and regulate the expression of mi RNAs as ce RNAs. Several lnc RNAs such as H19, HOTAIR and MEG3 have been found to be associated with mi RNAs in gastric cancer(GC), generating regulatory crosstalk across the transcriptome. These MRE sharing elements implicated in the ce RNA networks(ce RNETs) are able to regulate m RNA expression. The ce RNA regulatory networks including m RNAs, mi RNAs, lnc RNAs and circular RNAs may play critical roles in tumorigenesis, and the perturbations of ce RNETs may contribute to the pathogenesis of GC. 展开更多
关键词 Competing ENDOGENOUS RNA COMPETITIVE ENDOGENOUS RN
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阻塞性睡眠呼吸暂停不同亚型患者脂代谢紊乱的初步研究
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作者 卫蓓蕾 欧阳松云 +4 位作者 代丽萍 陈瑞英 赵春玲 孟杨 房怡菲 《中国现代医学杂志》 CAS 北大核心 2022年第12期55-59,共5页
目的初步探索阻塞性睡眠呼吸暂停(OSA)不同亚型的脂代谢紊乱差异。方法选取2017年1月—2019年12月就诊于郑州大学第一附属医院经多导睡眠监测(PSG)确诊的成年OSA患者848例。根据OSA严重程度及基于年龄、性别、绝经状态的不同亚型分组,... 目的初步探索阻塞性睡眠呼吸暂停(OSA)不同亚型的脂代谢紊乱差异。方法选取2017年1月—2019年12月就诊于郑州大学第一附属医院经多导睡眠监测(PSG)确诊的成年OSA患者848例。根据OSA严重程度及基于年龄、性别、绝经状态的不同亚型分组,比较各组血脂水平的差异。结果男性比例、BMI、吸烟史和高血压病史、呼吸暂停低通气指数(AHI)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)随着OSA严重程度增加而逐渐升高(P<0.05),夜间最低血氧饱和度(LSaO_(2))、高密度脂蛋白(HDL)随着OSA严重程度增加而逐渐降低(P<0.05)。非老年男性组AHI、TG高于非老年女性组,HDL、LSaO_(2)低于非老年女性组(P<0.05);老年男性组LSaO_(2)高于老年女性组(P<0.05);老年男性组AHI、TC)、TG、LDL低于非老年男性组,LSaO_(2)、HDL高于非老年男性组(P<0.05);老年女性组AHI高于非老年女性组(P<0.05)。绝经后女性组AHI高于未绝经女性组(P<0.05)。高血压组AHI高于非高血压组,TC、HDL、LDL低于非高血压组(P<0.05)。结论不同亚型OSA患者的血脂异常存在差异。OSA患者血脂异常与性别、年龄相关,非老年男性血脂变化更加显著。对OSA患者不同亚型分别进行综合评估,对于心脑血管并发症的管理有重要意义。 展开更多
关键词 阻塞性睡眠呼吸暂停 脂代谢紊乱 性别 年龄 血脂
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Growth of Fe-Doped and V-Doped MoS2 and Their Magnetic-Electrical Effects
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作者 Rui Tao Zhi-Hao Yang +7 位作者 Chao Tan Xin Hao Zun-Gui Ke Lei Yang li-ping dai Xin-Wu Deng Ping-Jian Li Ze-Gao Wang 《Journal of Electronic Science and Technology》 CAS CSCD 2022年第3期225-236,共12页
Magnetism in two-dimensional(2D)materials has attracted much attention recently.However,intrinsic magnetic 2D materials are rare and mostly unstable in ambient.Although heteroatom doping can introduce magnetism,the ba... Magnetism in two-dimensional(2D)materials has attracted much attention recently.However,intrinsic magnetic 2D materials are rare and mostly unstable in ambient.Although heteroatom doping can introduce magnetism,the basic property especially the electrical-magnetic coupling property has been rarely revealed.Herein,both iron(Fe)-doped and vanadium(V)-doped MoSfilms were grown by chemical vapor deposition.Through studying the structure and electrical property of Fe-doped and V-doped MoS,it was found that both Fe and V doping would decrease the electron concentration,exhibiting a p-type doping effect.Significantly,V-doped MoSdisplays a p-type conduction behavior.Although the carrier mobility decreases after heteroatom doping,both Fe and V doping could endow MoSwith magnetism,in which the transfer curves of both MoStransistors exhibit a strong magneticdependent behavior.It is found that the magnetic response of Fe-doped MoScan be tuned from~0.2 nA/T to~1.3 nA/T,with the tunability much larger than that of V-doped MoS.At last,the magnetic mechanism is discussed with the local magnetic property performed by magnetic force microscopy.The typical morphology-independent magnetic signal demonstrates the formed magnetic domain structure in Fe-doped MoS.This study opens new potential to design novel magnetic-electrical devices. 展开更多
关键词 Magnetic domain magnetic doping MOS2 p-type semiconductor
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Progress in the pathogenesis and treatment of rheumatoid arthritis with sleep apnea hypopnea syndrome
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作者 Jian-Wei Xiao Xu Cai +5 位作者 Fen-Lian Guo Yi-Wei Hong Zhi-Hua Yin Xin-Peng Chen li-ping dai Zhi-Zhong Ye 《Journal of Hainan Medical University》 2019年第2期83-86,共4页
Objective:Sleep apnea hypopnea syndrome (SAHS) is a common sleep disorder, which is manifested as a reduction in tidal volume or apnea during sleep, which results in intermittent hypoxia and tissue hypoxia and induces... Objective:Sleep apnea hypopnea syndrome (SAHS) is a common sleep disorder, which is manifested as a reduction in tidal volume or apnea during sleep, which results in intermittent hypoxia and tissue hypoxia and induces oxidative stress and inflammatory responses. Rheumatoid arthritis (RA) is a systemic disease contributing to hyperplasia of synovial membrane, cartilage erosion and joint damage. Fibroblast like synoviocytes (FLS), which make up the lining of the synovial membrane, are believed to play a role in the pathogenesis of RA. RA is a series of inflammation-like responses that induce joint damage and dysfunction and impair patients' life quality. This article first introduced the basic features of RA and analyzes the pathogenesis of RA with SAHS. Then the relationship between RA and SAHS was investigated. Finally, the progress in the treatment for RA with SAHS was reviewed emphatically. 展开更多
关键词 Sleep APNEA HYPOPNEA syndrome RHEUMATOID ARTHRITIS Pathogenesis PROGRESS in treatment
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