检索结果-南通市图书馆

The space environment monitor aboard FY-2 satellite

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2005年第1期48卷 26-32页

作者： zhu guangwu LI Baoquan WANG Shijin LIN Hua'an LIANG Jinbao SUN Yueqiang WU Weiqi The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China The Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080China

The space environment monitor (SEM) aboard FY-2 satellite consists of the high energy particle detector (HEPD) and the solar X-ray flux detector (SXFD). The SEM can provide real-time monitoring of flare and solar proton event for its operation at geostationary orbit and is also the first Chinese space system for monitoring and alerting solar proton event. During the 23rd solar maximum cycle, almost all the solar proton events that took place in this period are monitored and some of them are predicted successfully by analyzing the characteristics of X-ray flare monitored by the SEM. Some basic variation characteristics of particle at geostationary orbit are found such as day-night periodic variation of particle flux, the electron flux with energy ＞1.4 MeV in the scope from 10 to 200/cm2.s-sr and the proton flux with energy ＞1.1 MeV in the scope from 600 to 8000/*** during the time with no magnetic storm and solar eruption.

关键词： space environment monitor, space weather, solar proton event.

Space Environment Deteation of Chinese Meteorological Satellites

在线全文

学校读者我要写书评

暂无评论

空间科学学报 2004年第Z1期24卷 64-68页

作者： XU Ying WANG Shijin zhu guangwu LIANG Jinbao Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China

This paper presents the space environment detection of Chinese geosynchronous and sun-synchronous meteorological satellites and gives a short perspective of space environment observations on board meteorological satel... 详细信息

关键词： Meteorological satellite, Space environment, Detection

China Space Environment Development

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

空间科学学报 2008年第5期28卷 496-498页

作者： XU Ying WANG Shijin zhu guangwu LIANG Jinbao SUN Yueqiang Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190

This paper presents Chinese space environment detection and parts of results,and gives a short perspective of space environment observations on Chinese future satellites.

关键词：中国空间环境研究进展空间计划

Cross-calibration of high energetic particles data——A case study between FY-3B and NOAA-17

在线全文

学校读者我要写书评

暂无评论

中国科学：技术科学英文版 2013年第11期56卷 2668-2674页

作者： WANG ChunQin ZHANG XianGuo LI JiaWei HUANG Cong ZHANG XiaoXin JING Tao SHEN GuoHong ZHANG ShenYi CAO GuangWei SUN YueQiang LIANG JinBao zhu guangwu HAN Ying Center for Space Science and Applied Research Chinese Academy of Sciences University of Chinese Academy of Sciences National Satellite Meteorological Center National Center for Space Weather Beijing Institute of Petrochemical Technology

Cross-calibration of high energetic particle data is a primary requirement for the availability of multi-instrument,multi-spacecraft *** also can provide a method to verify relative reliability of data from single satellite *** paper presents a case study of energetic particles data cross-calibration between FY-3B and NOAA-17.A generally good agreement is acquired in the flux values and distribution trend of 2.5–6.9 MeV protons and 0.3–1.1 MeV electrons between FY-3B and NOAA-17 *** suggests that the data observed by FY-3B is properly *** can also confirm that energetic particles data observed by FY-3B satellite is available.

关键词：交叉定标粒子数高能案例卫星观测测量数据可用性航天器

The geometric factor of high energy protons detector on FY-3 satellite

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2014年第11期57卷 2558-2566页

作者： ZHANG ShenYi ZHANG XianGuo WANG ChuiQin SHEN GuoHong JIN Tao ZHANG BinQuan SUN YueQiang zhu guangwu LIANG JinBao ZHANG XiaoXin LI JiaWei HUANG Cong HAN Ying Center for Space Science and Applied Research Chinese Academy of Sciences National Center for Space Weather Beijing Institute of Petrochemical Technology

Geometric factor is the key parameter for inversion of particle spectrum in space particle detection. Traditional geometric factor is obtained through the method of numerical calculation with the actual structure of the detector as the input condition. The degree of accuracy for data inversion is reduced since traditional geometric factor fails to take into account the physical process of interaction between the particle and substance as well as the influence of factors such as the particle interference between different energy channels on the measurement result. Here we propose an improved geometrical factor calculation method, the concept of which is to conduct actual structural modelling of the detector in the GEANT4 program, consider the process of interaction between the particle and substance, obtain the response function of the detector to particles of different energy channels through the method of Monte Carlo simulation, calculate the influence of contaminated particle on the geometrical factor, and finally get the geometrical factors for different energy channels of the detector. The imrpoved geometrical factor obtained through the method has carried out inversion for the data of high energy protons detector on China's FY-3 satellite, the energy spectrum after which is more in line with the power law distribution recognized by space physics. The comparison with the measured result of POES satellite indicates that the FY-3 satellite data are in good accordance with the satellite data, which shows the method may effectively improve the quality of data inversion.

关键词：卫星数据高能质子探测器几何要素蒙特卡罗模拟方法几何因子数值计算 GEANT4

Super solar particle event around AD775 was found

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2014年第22期59卷 2736-2742页

作者： Dazhuang Zhou Chi Wang Binquan Zhang Shenyi Zhang Ping Zhou Yueqiang Sun Jinbao Liang guangwu zhu Ji Wu National Space Science Center Chinese Academy of Sciences

A rapid radiocarbon14C increase of 120/00in AD774–775 has been reported in cedar and oak tree *** far,the origin of the14C increase is still uncertain and the possible origin is either supernova or solar particle *** most possible origin of14C increase is strong solar flares and Coronal Mass Ejections(CMEs)with strong particles *** approaches to identify the strong historical solar particle events based on the rapid14C/10Be increase in tree/coral rings and ice cores,long duration strong auroras and geomagnetic storms are *** of the super auroras in AD775 was first found in a Chinese Chronicles Jiutangshu and it supports the views that the rapid14C increase and strong auroras around AD775 are most possibly caused by strong solar storms with intense particles *** was identified that the solar event around AD775 would be the strongest solar particle event in the past 11400 *** discovery is significant for the research on the history of solar activities,space weather and forecast,radiation of solar energetic particles and protection.

关键词：太阳耀斑子事件日冕物质抛射太阳高能粒子粒子辐射太阳风暴 14C 放射性碳

Carbon Emission Effects Driven by Evolution of Chinese Dietary Structure from 1987 to 2020

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2024年第1期34卷 181-194页

作者： zhu Yuanyuan ZHANG Yan zhu Xiaohua Key Laboratory of Geographic Process Analysis&Simulation Hubei Province Central China Normal UniversityWuhan430079China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China

Exploring carbon emission effects based on the evolution of residents’ dietary structure to achieve the carbon neutrality goal and mitigate climate change is an important *** study took China as the research object(data excluding Hong Kong,Macao and Taiwan) and used the carbon emission coefficient method to quantitatively measure the food carbon emissions from 1987–2020,then analyzed the carbon emission effects under the evolution of dietary *** results showed that during the study period,the Chinese dietary structure gradually changed to a high-carbon consumption *** dietary structure of urban residents developed to a balanced one,while that of rural residents developed to a high-quality *** the study period,the per capita food carbon emissions and total food consumption of Chinese showed an increasing *** per capita food carbon emissions of residents in urban and rural showed an overall upward *** total food carbon emissions in urban increased significantly,while that in rural increased first and then *** influence of beef and mutton on carbon emissions is the highest in dietary *** with the balanced dietary pattern,the food carbon emissions of Chinese residents had not yet reached the peak,but were evolving to a high-carbon consumption pattern.

关键词： dietary structure structural evolution carbon emission effects carbon neutrality China

Synergistic catalysis of the N-hydroxyphthalimide on flower-like bimetallic metal-organic frameworks for boosting oxidative desulfurization

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第1期21卷 674-682页

作者： Jing He Kun zhu Wei Jiang Dong-Ao zhu Lin-Hua zhu Hai-Yan Huang Wen-Shuai zhu Hua-Ming Li Institute for Energy Research Jiangsu UniversityZhenjiang212013JiangsuChina College of Chemistry and Chemical Engineering Hainan Normal UniversityKey Laboratory of Water Pollution Treatment and Resource Reuse of Hainan ProvinceHaikou571158HainanChina

Synergic catalytic effect between active sites and supports greatly determines the catalytic activity for the aerobic oxidative desulfurization of fuel *** this work,Ni-doped Co-based bimetallic metal-organic framework(CoNi-MOF)is fabricated to disperse N-hydroxyphthalimide(NHPI),in which the whole catalyst provides plentiful synergic catalytic effect to improve the performance of oxidative desulfurization(ODS).As a bimetallic MOF,the second metal Ni doping results in the flower-like morphology and the modification of electronic properties,which ensure the exposure of NHPI and strengthen the synergistic effect of the overall *** with the monometallic Co-MOF and naked NHPI,the NHPI@CoNi-MOF triggers the efficient activation of molecular oxygen and improves the ODS performance without an *** sulfur removal of dibenzothiophene-based model oil reaches 96.4%over the NHPI@CoNi-MOF catalyst in 8 h of ***,the catalytic product of this aerobic ODS reaction is sulfone,which is adsorbed on the catalyst surface due to the difference in *** work provides new insight and strategy for the design of a strong synergic catalytic effect between NHPI and bimetallic supports toward high-activity aerobic ODS materials.

关键词： Metal-organic frameworks Doped Bimetallic N-hydroxyphthalimide Aerobic processes Oxidative desulfurization

A review of recent advances in the effects of surface and interface properties on marine propellers

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第2期12卷 185-214页

作者： Manfu zhu Liran MA State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China

Marine propellers are important propulsion devices for both surface ships and underwater *** severe environmental problems have required further performance enhancement for ***,traditional methods to improve propeller performances through geometrical and structural optimizations have been extensively investigated,while the underlying mechanisms of the effects of surface and interface properties on marine propellers are still far from being fully *** paper presented a comprehensive review of recent advances in the effects of surface and interface properties,such as surface roughness and surface wettability,on marine propellers with an emphasis on the significant improvements in both hydrodynamic and cavitation performances,hoping to arouse more in-depth investigations in the field of surface/interface science and technologies on marine propellers,and also promote the state-of-the-art technologies,such as superlubricity technology,into practical applications.

关键词： marine propellers hydrodynamics cavitation surface roughness surface wettability