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某飞机刹车系统介绍及异常粘连故障分析

内燃机与配件 2024年第10期 76-78页

作者：那超中国民用航空飞行学院绵阳分院四川绵阳621000

飞机刹车系统是涉及飞行安全的重要系统,同时该系统的部件也是飞机运行中容易出现故障的地方,本文以Cessna525飞机刹车系统为研究对象,从该刹车系统的工作原理及组成入手,对刹车异常粘连故障进行分析,并提出维护建议,对后续该机型及类... 详细信息

飞机刹车系统是涉及飞行安全的重要系统,同时该系统的部件也是飞机运行中容易出现故障的地方,本文以Cessna525飞机刹车系统为研究对象,从该刹车系统的工作原理及组成入手,对刹车异常粘连故障进行分析,并提出维护建议,对后续该机型及类似机型相关故障的排除提供参考借鉴。

关键词： Cessna525飞机刹车系统刹车异常粘连

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DA42NG飞机涡轮增压系统典型故障分析

现代制造技术与装备 2024年第6期60卷 48-50页

作者：那超中国民用航空飞行学院绵阳分院绵阳621000

涡轮增压系统对于飞机的飞行性能和经济性都有着至关重要的影响,它能够提高发动机效率、减少燃油消耗和排放、提升飞行的操作灵活性和安全可靠性。对于装配有涡轮增压系统的飞机而言,涡轮增压系统故障是发生率和维护成本较高的故障之一... 详细信息

涡轮增压系统对于飞机的飞行性能和经济性都有着至关重要的影响,它能够提高发动机效率、减少燃油消耗和排放、提升飞行的操作灵活性和安全可靠性。对于装配有涡轮增压系统的飞机而言,涡轮增压系统故障是发生率和维护成本较高的故障之一。文章以DA42NG飞机的涡轮增压系统为研究对象,首先分析系统的组成和工作原理,其次剖析典型故障的原因,最后提出维护建议,以期为该机型及类似机型相关故障的排除提供参考。

关键词： DA42NG飞机涡轮增压系统典型故障维护

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某型飞机飞行控制系统概述及钢索维护建议

内燃机与配件 2024年第9期 126-128页

作者：那超中国民用航空飞行学院绵阳分院四川绵阳621000

飞行控制系统是飞机最重要的系统之一,它不仅直接影响飞行安全,还很大程度上决定了飞行员的操纵舒适性和旅客的乘坐舒适性。对于软式操纵系统的飞机而言,钢索是飞行操纵的直观载体,是最重要且最易出现问题的部件。本文以Cessna525飞机... 详细信息

飞行控制系统是飞机最重要的系统之一,它不仅直接影响飞行安全,还很大程度上决定了飞行员的操纵舒适性和旅客的乘坐舒适性。对于软式操纵系统的飞机而言,钢索是飞行操纵的直观载体,是最重要且最易出现问题的部件。本文以Cessna525飞机飞行控制系统为研究对象,从该系统的工作原理及组成入手,描述钢索磨损、断丝等故障的检查方法,并提出维护建议,对后续该机型及类似机型相关故障的排除提供参考借鉴。

关键词： Cessna525飞机飞行控制系统钢索故障

Real-Time Observation on Water-Soluble Ions of PM_(2.5)in Beijing under the Influences of Different Air Masses in Summer

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Atmospheric and Oceanic Science Letters 2014年第1期7卷 23-27页

作者： CHENG Meng-Tian SUN Yang ZHU Xiao-Wan chao na State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric PhysicsChinese Academy of Sciences

To further understand the variations of water-soluble ions in PM2.5 in Beijing,the authors observed their concentrations continuously and in high temporal resolution by the system for rapid collection of fine particles and ion chromatography(RCFP-IC) during 12–18 July 2010.These results combined with those of earlier backward trajectory research are used analyzed to determine the causes of concentration changes in water-soluble ions under the influences of two kinds of air masses in summer.The results indicate that concentrations of NO3-,SO42-,and NH4+ were influenced strongly by the continental air mass than by the marine air mass.Cl- and na+ were not changed significantly.Because the sources of K+,Mg2+,and Ca2+ are mainly concentrated on land,their concentration levels were slightly higher under the control of continental air mass than that of the marine air mass.Variations of NO2- during the observation differed from those of other ions;its concentration was significantly higher under the influence of marine air mass.Moreover,the authors obtain the diurnal variations of eight water-soluble inorganic ions including NH4+,K+,Mg2+,Ca2+,Cl-,NO2-,NO3-,and SO42-.Diurnal variations of NH4+,NO3-,and Cl- showed single peak,which appeared before noon,while SO42- showed two peaks that appeared during rush hours.Those of Mg2+,Ca2+,and K+ showed single peak that appeared in the afternoon.That of NO2- showed with a peak appearing at sunrise and a valley appearing at sunset.

关键词：喷雾器水溶性的离子 PM2.5 夏天北京

Characteristics of Gaseous Pollutants at a Regional Background Station in Southern China

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Atmospheric and Oceanic Science Letters 2014年第4期7卷 340-345页

作者： chao na JI Dong-Sheng CHEN Jia-Shan XIN Jin-Yuan HU Bo WANG Yue-Si WANG Hui MENG Ze Gansu Agricultural University State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology South China Botanical Garden Chinese Academy of Sciences

Measurements of gaseous pollutants(O3, NOx, SO2, and CO) were conducted at Dinghushan background station in southern China from January to December 2013.The levels and variations of O3, NOx, SO2, and CO were analyzed and their possible causes discussed. The annual average concentrations of O3, NOx, SO2, and CO were 24.6 ± 23.9, 12.8 ± 10.2, 4.0 ± 4.8, and 348 ± 185 ppbv, respectively. The observed levels of the gaseous pollutants are comparable to those at other background sites in China. The most obvious diurnal variation of O3 was observed in autumn, with minima in the early morning and maxima in the afternoon. The diurnal variations of SO2 showed high values during the day. The diurnal cycles of NOx showed higher values in the morning and lower values during the night. Higher CO concentrations were observed in spring followed by winter, autumn, and summer. Biomass burning, in combination with the transport of regional pollution, is an important source of CO, SO2, and NOx in spring and winter. Backward trajectories were calculated and analyzed together with corresponding pollutant concentrations. The results indicate that air masses passing over polluted areas are responsible for the high concentrations of gaseous pollutants at the Dinghushan background station.

关键词：气态污染物中国南方二氧化硫本底氮氧化物二氧化碳平均浓度交替显示

刺蒺藜黄酮类化合物的提取及其药理活性研究进展

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江苏调味副食品 2024年第1期 1-4页

作者：姚甜郝梦超安超娜陈亮刘存芳田光辉陕西理工大学化学与环境科学学院陕西汉中723000 汉中天然谷生物科技股份有限公司陕西城固723206

刺蒺藜含有丰富的黄酮类化合物。刺蒺藜黄酮具有抗炎、抗菌、抗氧化、保护心脑血管和神经中枢等药理活性。综述刺蒺藜黄酮的提取方法及药理活性,为野生刺蒺藜资源在食品、药品、精细化工品等领域的综合利用提供理论参考。

关键词：刺蒺藜黄酮提取药理活性

Vehicular emissions in China in 2006 and 2010

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Journal of Environmental Sciences 2016年第10期28卷 179-192页

作者： Guiqian Tang na chao Yuesi Wang Jiashan Chen State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric Physics Chinese Academy of Sciences Environmental Science Research & Design Institute of Zhejiang Province Unit 94865 of PLA

Vehicular emissions in China in 2006 and 2010 were calculated at a high spatial resolution based on the data released by the national Bureau of Statistics, by taking the emission standards into consideration. China＇s vehicular emissions of carbon monoxide （CO）, nitrogen oxides （NOx）, volatile organic compounds （VOCs）, ammonia （NH3）, fine particulate matters （PM2.5）, inhalable particulate matters （PMlo）, black carbon （BC）, and organic carbon （OC） were 30,113.9, 4593.7, 6838.0, 20.9, 400.2, 430.5,285.6, and 105.1 Gg, respectively, in 2006 and 34,175.2, 5167.5, 7029.4, 74.0, 386.4, 417.1, 270.9, and 106.2 Gg, respectively, in 2010. CO, VOCs, and NH3 emissions were mainly from motorcycles and light-duty gasoline vehicles, whereas NOx, PMzs, PMlo, and BC emissions were mainly from rural vehicles and heavy- duty diesel trucks. OC emissions were mainly from motorcycles and heavy-duty diesel trucks. Vehicles of pre-China I （vehicular emission standard of China before phase I） and China I （vehicular emission standard of China in phase I） were the primary contributors to all of the pollutant emissions except NH3, which was mainly from China III and China IV gasoline vehicles. The total emissions of all the pollutants except NH3 changed little from 2006 to 2010. This finding can be attributed to the implementation of strict emission standards and to improvements in oil quality.

关键词： Vehicular emissionsGridded emissionsControl policiesChina

Fate of organophosphate esters from the Northwestern Pacific to the Southern Ocean:Occurrence,distribution,and fugacity model simulation

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Journal of Environmental Sciences 2024年第3期137卷 347-357页

作者： Tengda Shi Ruijing Li Jie Fu chao Hou Hui Gao Guanjie Cheng Haibo Zhang Shuaichen Jin Liang Kong Guangshui na College of Marine Technology and Environment Dalian Ocean UniversityDalian 116023China Laboratory for coastal marine eco-environment process and carbon sink of Hainan province/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China national Marine Environmental Monitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China NCS Testing Technology Co. Ltd.Beijing 10081China

Eleven organophosphate esters(OPEs)in the air and seawater were investigated from the northwestern Pacific Ocean to the Southern Ocean during the 2018 Chinese 34th Antarctic Scientific Expedition.The concentration of total OPEs ranged from 164.82 to 3501.79 pg/m~3in air and from 4.54 to 70.09 ng/L in seawater.Two halogenated OPEs,tri(chloropropyl)phosphate(TCPP)and tri(2-chloroethyl)phosphate(TCEP),were generally more abundant than the non-halogenated OPEs.A levelⅢfugacity model was developed to simulate the transfer and fate of seven OPEs in the air and seawater regions of the central Ross Sea.The model results indicate that OPEs are transferred from the air to the seawater in the central Ross Sea in summer,during which the Ross Sea acts as a final OPE sink.Dry and wet deposition dominated the processes involving OPE transfer to seawater.The OPE degradation process was also found to be more pervasive in the atmosphere than in the seawater region.These findings highlights the importance of long-range transport of OPEs and their air–seawater interface behavior in the Antarctic.

关键词： Organophosphate esters(OPEs) Long-range transport Fugacity model Antarctic Fate

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针灸治疗压力性尿失禁研究进展

实用中医药杂志 2024年第6期40卷 1235-1238页

作者：谢昕刘镓雨许诺那超杨烁郭颖刘延东黑龙江省医院黑龙江哈尔滨150036 黑龙江省中医药科学院黑龙江哈尔滨150036 黑龙江中医药大学附属第二医院针灸二科黑龙江哈尔滨150001

压力性尿失禁(stress urinary incontinence,SUI)是指在身体运动或活动(如咳嗽、大笑、打喷嚏、跑步或举重)对膀胱施加压力时发生尿液不自主渗漏[1]。这种尿液失禁与心理压力无关,而是由于支撑和控制尿道的肌肉和组织(盆底肌)收缩无力所... 详细信息

压力性尿失禁(stress urinary incontinence,SUI)是指在身体运动或活动(如咳嗽、大笑、打喷嚏、跑步或举重)对膀胱施加压力时发生尿液不自主渗漏[1]。这种尿液失禁与心理压力无关,而是由于支撑和控制尿道的肌肉和组织(盆底肌)收缩无力所致[2]。

关键词：压力性尿失禁盆底肌针灸治疗尿液