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| 1 | Mechanical defect identification for gas‐insulated switchgear equipment based on time‐frequency vibration signal analysis显示文摘Mechanical defect is an important reason for the failure of gas‐insulated switchgear(GIS)equipment.Based on the time‐frequency characteristic vibration signal analysis on five kinds of mechanical defects,a novel intelligent algorithm model combining complementary ensemble empirical mode decomposition(CEEMD)and genetic al-gorithm improved kernel fuzzy mean clustering(GAKFCM)was proposed to identify the mechanical defect type.First,the mechanical defect platform and detection sys-tem were built.Then CEEMD and IMF sensitivity factors were used to analyse the time‐frequency signal of five kinds of vibration defects,and the feature extraction was performed on the processed vibration signals.Finally,the mechanical vibration defect recognition model was established based on the GAKFCM algorithm and its validity was verified.Results show that the developed detection system can detect mechanical vibration signals sensitively.Singular values,frequency band lines and entropy can reflect the energy attenuation and distribution differences for different type of me-chanical defect vibration signals.The proposed GAKFCM clustering model combining the above vibration feature parameters can effectively find and diagnose the mechanical defect of GIS equipment.Its recognition accuracy reaches 96.74%,especially for the loose contact seat bolts and poor contact failures of the disconnector. | Yao Zhong Jian Hao Ruijin Liao Xupeng Wang Xiping Jiang Feng Wang | 2021 | High Voltage2021，6，3： | 3 |
| 2 | A survey of HIV infection and related high-risk factors among men who have sex with men in Suzhou,Jiangsu,China显示文摘A cross-sectional study using the snowball sampling method was conducted in May 2008 to investigate human immunodeficiency virus (HIV) infection status and related high risk factors among men who have sex with men (MSM) in Suzhou city of Jiangsu province. The researchers carried out a face-to-face questionnaire interview among MSM, and collected their blood samples to test for HIV and other sexually transmitted diseases (STDs). Among the 280 respondents, 91.1% had homosexual acts in the past 6 months and 87.5% had multiple homosexual partners; 46.4% had heterosexual sex in the past 6 months and 33.1% had multiple heterosexual partners. The rate of continued condom use was 44.3% in homosexual sex in the past 6 months, while the rate in heterosexual sex was 33.9%. Laboratory test results showed that the prevalences of HIV and syphilis were 7.1% (20/280) and 15.0% (42/280), respectively, but no HCV-positive person was found. In the multivariate logistic regression model, subjects with a monthly income of more than RMB $ 1,000 (OR=4.83,95% CI=1.44-16.22), subjects who often went to bars for sexual partners (OR=2.25, 95%CI=1.21-4.20), and subjects who had more than one sexual partner in the past 6 months (OR=0.49, 95%CI=0.25-0.97) and had sex with fixed sexual partners in the past 6 months (OR=0.42, 95%CI=0.25-0.75) were significantly associated with the rate of continued condom use in homosexual sex in the past 6 months. Unprotected sex and multiple sexual partners were more common among MSM in Suzhou city; furthermore, the prevalences of HIV infection and syphilis were relatively high. HIV preventive measures should be designed to address these risk factors and control the spread of HIV among MSM. | Hongling Bai Xiping Huan Weiming Tang Xin Chen Hongjing Yan Xiaoyan Liu Haitao Yang Zhihang Peng Xiuping Zhao Rongbin Yu Hao Yu Feng Chen | 2011 | The Journal of Biomedical Research2011，25，1： | 2 |
| 3 | Summarization on variable liquid thrust rocket engines显示文摘The technology actuality and development trend of variable thrust rocket engines at home and abroad are summarized. Key technologies of developing variable thrust rocket engines are analyzed. Development advices on developing variable thrust rocket engines that are adapted to the situation of our country are brought forward. | YUE ChunGuo LI JinXian HOU Xiao FENG XiPing YANG ShuJun | 2009 | Science China(Technological Sciences)2009，52，10： | 2 |
| 4 | Adjusting principle of gas jet controlling inlet and numerical verification显示文摘To improve the inlet performance of a ramjet working under variable conditions,a design is proposed by controlling the inlet with jet controlling,which combines the method of reducing the sealing Mach number of the external waves and the technique of controlling inlet by jet controlling.Three inlets were designed to analyze the feasibility and a numerical simulation method was used to simulate the three inlet flow fields.The adjustment mechanism of the design was studied through analysis of the simulation results.The design was verified by comparing the performances of the three inlets.The study showed that the method of reducing the sealing Mach number of the external wave system can improve the flow coefficient when the inlet works at low Mach numbers.The technique of controlling inlet by jet controlling can homogenize inlet flow fields at high Mach numbers,reduce effective throat area and increase the total pressure recovery(TPR).Adjustable inlets controlled by jet controlling demonstrate good performance at certain working ranges. | FENG XiPing LIN ZhiYuan ZHENG Ya LI JinXian CAO Qi | 2011 | Science China(Technological Sciences)2011，54，11： | 1 |
| 5 | A study on effect of sonochemistry in a reverberation field显示文摘In this paper,an ultrasound with frequency of 815 kHz was used to re-search the sonochemical yield in a small-size reverberation field by the methodof fluorescent spectrum analysis.There are two characteristics on the effect ofsonochemistry in the reverberation field:First,the cavitation threshold wasabout 0.3W/cm^2(it was 0.7W/cm^2 in travelling field);Second,when thesound intensity was larger than the threshold,the sonochemical yield increasedas the intensity increased and increased rapidly after the intensity was at1.69-2.13W/cm^2,so that there was a upturned point in the curve of the result(which would tend to saturation in the travelling field).The theoretical analysisshows that the reason of the threshold decrease is that the sound energy densitybecomes high in the reverberation field,and the upturned point results from thedisturbance of the radiation pressure on the liquid surface.Therefore,by exper-iment and theory this paper shows that a reverberation field has to be built forthe higher | WANG Shuangwei(Dep. of Physics. Northeast Normal University, Changchun 130024)FENG Ruo , MO Xiping and SHI Qun (Institute of Acoustics, Department of Chemistry, Nanjing University. Nanjing 210008) | 1993 | Chinese Journal of Acoustics1993，12，2： | 1 |
| 6 | Study on‘pulse cavitation peak'in an ultrasound reverberating field显示文摘 | Wang Shuang Wei Feng Ruo Xiping Mo | 1996 | Ultrasonics Sonochemistry1996，3，1： | 1 |
| 7 | Variation in genes involved in the RANKL/RANK/OPG bone remodeling pathway are associated with bone mineral density at different skeletal sites in men显示文摘 | Yi-Hsiang Hsu Tianhua Niu Henry A. Terwedow Xin Xu Yan Feng Zhiping Li Joseph D. Brain Cliff J. Rosen Nan Laird Xiping Xu | 2006 | Human Genetics2006，，5： | 1 |
| 8 | Study on Embrittlement Effect of Ferrite/Martensitic Steel by High-energy Heavy-ion Irradiation显示文摘As a candidate structural material for fast reactor assembly,the irradiation embrittlement is a key problem for ferrite/martensitic steels to reduce its in-reactor application performance.Ion simulation irradiation can greatly reduce the cost of material research.According to the requirement of fast reactor service environment,the irradiation resistance of a 9Cr ferrite/martensite steel was evaluated by high-energy heavy-ion irradiation combined with small punch test technology. | LI Junhong DU Aibing SU Xiping FENG Wei REN Yuanyuan | 2018 | 中国原子能科学研究院年报2018，，1： | 1 |
| 9 | The impact of Typhoon Lekima (2019) on East China: a postevent survey in Wenzhou City and Taizhou City显示文摘Typhoon Lekima(2019)struck Zhejiang Province on 10 August 2019 as a supertyphoon,which severely impacted Zhejiang Province.The typhoon killed 45 people and left three others missing,and the total economic loss reached 40.71 billion yuan.This paper reports a postdisaster survey that focuses on the storm precipitation,flooding,landslides,and weather services associated with Typhoon Lekima(2019)along the southeastern coastline of Zhejiang Province.The survey was conducted by a joint survey team from the Shanghai Typhoon Institute and local meteorological bureaus from 26 to 28 August,2019,approximately two weeks after the disaster.Based on this survey and subsequent analyses of the results,we hope to develop countermeasures to prevent future tragedies. | Cong ZHOU Peiyan CHEN Shifang YANG Feng ZHENG Hui YU Jie TANG Yi LU Guoming CHEN Xiaoqing LU Xiping ZHANG Jing SUN | 2022 | Frontiers of Earth Science2022，16，1： | 1 |
| 10 | Analysis of wave velocity patterns in black cherry trees and its effect on internal decay detection 显示文摘 | Li Guanghui Wang Xiping Feng Hailin | 2014 | Computers and Electronics in Agriculture2014，，： | 1 |
| 11 | Association between the APC gene D1822V variant and the genetic susceptibilityof colorectal cancer显示文摘 | Maohui Feng Xiping Fang Qian Yang Gang Ouyang Daping Chen Xiang Ma Huachi Li Wei Xie | 2014 | Oncology Letters2014，，1： | 1 |
| 12 | The electrochemical determination of the effects of ultra-sound cavitation 显示文摘 | Mo Xiping Feng Ruo Zhou Hui | 1992 | Acoustics Letters1992，15，2： | 1 |
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