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您的检索式：作者名="CHU LongFei"
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| 1 | Studies on aeroservoelasticity semi-physical simulation test for missiles显示文摘Missiles may be damaged when aeroservoelastic problem occurs,which is caused by the interaction of structure flexibility and flight control system.Because of the limit of wind tunnel test condition,numerical methods are mostly used in previous aeroservoelastic studies.However,series of assumptions and simplification on structures,aerodynamics and flight control systems are unavoidably introduced,and various nonlinear factors are also ignored,therefore,they result in considerable errors.A novel method called aeroservoelasticity semi-physical simulation test is proposed in this paper,which takes the flexible missile with control system as the test object.Vibration signals at several locations of the missile are measured by accelerometers,then corresponding unsteady aerodynamics is computed based on the fact that airflow at high Mach is nearly quasi-steady,and finally unsteady aerodynamics is exerted simultaneously by shakers at certain locations of the missile.The aeroservoelasticity semi-physical simulation test system can be constructed after the control system is closed.Open loop transfer function test and closed loop stability test are carried out in sequence.The test principle and method proposed in this paper are verified by the concordance between the results of numerical simulation and experiment. | WU ZhiGang CHU LongFei YUAN RuiZhi YANG Chao TANG ChangHong | 2012 | Science China(Technological Sciences)2012，55，9： | 14 |
| 2 | The prevalence of dementia in urban and rural areas of China显示文摘 | Jianping Jia Fen Wang Cuibai Wei Aihong Zhou Xiangfei Jia Fang Li Muni Tang Lan Chu Youlong Zhou Chunkui Zhou Yong Cui Qi Wang Weishan Wang Peng Yin Nan Hu Xiumei Zuo Haiqing Song Wei Qin Liyong Wu Dan Li Longfei Jia Juexian Song Ying Han Yi Xing Peijie Y | 2013 | Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association2013，，： | 2 |
| 3 | Effective degradation of tetracycline by mesoporous Bi2WO6 under visible light irradiation显示文摘双性人 2 WO 6 在不同 pHs 与一个热水的方法被综合并且在水里为四圜素(TC ) 的降级使用了。mesoporous 双性人 2 在 pH 准备的 WO 6(BWO-1 ) 1 由于它的大表面区域和更有效的能力显示了最高的吸附和降级能力到 TC 分开 photogenerated 电子和洞。在 20 mg 畤散琠敨猠浹瑰浯 ? 畢 ? 敲慬獰 ? 耶啱 @ 椠 ? 的 97% TC ? ┰漠 ? | Xiaolong CHU Guoqiang SHAN Chun CHANG Yu FU Longfei YUE Lingyan ZHU | 2016 | Frontiers of Environmental Science & Engineering2016，10，2： | 0 |
| 4 | Alterations of soil aggregates and intra-aggregate organic carbon fractions after soil conversion from paddy soils to upland soils:Distribution,mineralization and driving mechanism显示文摘Investigating the impacts of soil conversion on soil organic carbon(OC) content and its fractions within soil aggregates is essential for defining better strategies to improve soil structure and OC sequestration in terrestrial ecosystems. However, the consequences of soil conversion from paddy soil to upland soil for soil aggregates and intra-aggregate OC pools are poorly understood. Therefore, the objective of this study was to quantify the effects of soil conversion on soil aggregate and intra-aggregate OC pool distributions. Four typical rice-producing areas were chosen in North and South China, paired soil samples(upland soil converted from paddy soil more than ten years ago vs. adjacent paddy soil) were collected(0–20 cm) with three replicates in each area. A set of core parameters(OC preservation capacity, aggregate carbon(C) turnover, and biological activity index) were evaluated to assess the responses of intra-aggregate OC turnover to soil conversion. Results showed that soil conversion from paddy soil to upland soil significantly improved the formation of macro-aggregates and increased aggregate stability. It also notably decreased soil intra-aggregate OC pools, including easily oxidized OCa(EOCa), particulate OCa(POCa), and mineral-bound(MOCa) OC, and the sensitivity of aggregate-associated OC pools to soil conversion followed the order: EOCa(average reduction of 21.1%) > MOCa(average reduction of 15.4%) > POCa(average reduction of 14.8%). The potentially mineralizable C(C_(0)) was significantly higher in upland soil than in paddy soil, but the corresponding decay constant(k) was lower in upland soil than in paddy soil. Random forest model and partial correlation analysis showed that EOCa and pH were the important nutrient and physicochemical factors impacting k of C mineralization in paddy soil,while MOCa and C-related enzyme(β-D-cellobiohydrolase) were identified as the key factors in upland soil. In conclusion, this study evidenced that soil conversion from paddy soil to upland soil increased the percentage of macro-aggregates and aggregate stability, while decreased soil aggregate-associated C stock and k of soil C mineralization on a scale of ten years. Our findings provided some new insights into the alterations of soil aggregates and potential C sequestration under soil conversion system in rice-producing areas. | Longfei KANG Jiamei WU Chunfeng ZHANG Baoguo ZHU Guixin CHU | 2024 | Pedosphere2024，34，1： | 0 |
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