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| 1 | Stress sensitivity of formation during multi-cycle gas injection and production in an underground gas storage rebuilt from gas reservoirs显示文摘Permeability sensitivity to stress experiments were conducted on standard core samples taken from Wen 23 Gas Storage at multi-cycle injection and production conditions of the gas storage to study the change pattern of stress sensitivity of permeability.A method for calculating permeability under overburden pressure in the multi-cycle injection and production process was proposed,and the effect of stress sensitivity of reservoir permeability on gas well injectivity and productivity in UGS was analyzed.Retention rate of permeability decreased sharply first and then slowly with the increase of the UGS cycles.The stress sensitivity index of permeability decreased with the increase of cycle number of net stress variations in the increase process of net stress.The stress sensitivity index of permeability hardly changed with the increase of cycle number of net stress variations in the decrease process of net stress.With the increase of cycle number of net stress variation,the stress sensitivity index of permeability in the increase process of net stress approached that in the decrease process of net stress.The lower the reservoir permeability,the greater the irreversible permeability loss rate,the stronger the cyclic stress sensitivity,and the higher the stress sensitivity index of the reservoir,the stronger the reservoir stress sensitivity.The gas zones with permeability lower than 0.3’10-3 mm2 are not suitable as gas storage regions.Stress sensitivity of reservoir permeability has strong impact on gas well injectivity and productivity and mainly in the first few cycles. | LI Jiqiang ZHAO Guanqun QI Zhilin YIN Bingyi XU Xun FANG Feifei YANG Shenyao QI Guixue | 2021 | Petroleum Exploration and Development2021，48，4： | 1 |
| 2 | Experimental transmission of Theileria uilenbergi infective for small ruminants by Haemaphysalis longicornis and Haemaphysalis qinghaiensis显示文摘 | Youquan Li Jianxun Luo Guiquan Guan Miling Ma Aihong Liu Junlong Liu Qiaoyun Ren Qingli Niu Bingyi Lu Jinliang Gao Zhijie Liu Zhisheng Dang Zhancheng Tian Bao Zhang Zonglin He Qi Bai Hong Yin | 2009 | Parasitology Research2009，，5： | 1 |
| 3 | A new ovine Babesia species transmitted by Hyalomma anatolicum anatolicum显示文摘 | Guiquan Guan Miling Ma Emmanuelle Moreau Junlong Liu Bingyi Lu Qi Bai Jianxun Luo Wayne Jorgensen Alain Chauvin Hong Yin | 2009 | Experimental Parasitology2009，，4： | 1 |
| 4 | Observation of Stable Marine Boundary Layer by Shipborne Coherent Doppler Lidar and Radiosonde over Yellow Sea显示文摘Shipborne observations obtained with the coherent Doppler lidar(CDL)and radiosonde during 2014 campaign were used to study the structure of marine boundary layer in the Yellow Sea.Vertical wind profiles corrected for ship motion was used to derive higher-order statistics,showing that motion correction is required and significant for turbulence analysis.During a day with weak mesoscale activity,a complexed three-layer structure system was observed.The lowest layer showed a typical stable boundary layer structure feature.An aerosol layer with abrupt variation in wind speed and relative humidity always appeared at the middle layer,the formation of which may be due to Kelvin-Helmholz instability.The top layer encountered a dramatic change in wind direction,which may result from the warm advection from the Eurasian continent on the basis of backward trajectory analysis.Furthermore,the MABL height in stable regime was derived from potential temperature,CDL signal-to-noise ratio(SNR)and CDL vertical velocity variance,respectively.The stable boundary layer(SBL)height in SBL can be derived from the inversion layer of potential temperature profile,and the mixing height in SBL can be retrieved from the vertical velocity variance gradient method.Neither the SBL height nor the mixing height is in agreement with the height retrieved from CDL SNR gradient method because of different definition and criterion.One of the limitations of SNR gradient method for MABL retrieval is that it is easier to be affected by the lofted decoupled aerosol layer,where the retrieved result is less suitable.Finally,the higher-order vertical velocity statistics within the marine stable boundary layer were investigated and compared with the previous studies,and different turbulence mechanisms have an important effect on the statistics deviation. | Xiaochun ZHAI Songhua WU Bingyi LIU Jiaping YIN Hongwei ZHANG | 2020 | Journal of Geodesy and Geoinformation Science2020，3，4： | 0 |
| 5 | SUDM-SP:A method for discovering trajectory similar users based on semantic privacy显示文摘With intelligent terminal devices’widespread adoption and global positioning systems’advancement,Location-based Social Networking Services(LbSNs)have gained considerable attention.The recommendation mechanism,which revolves around identifying similar users,holds significant importance in LbSNs.In order to enhance user experience,LbSNs heavily rely on accurate data.By mining and analyzing users who exhibit similar behavioral patterns to the target user,LbSNs can offer personalized services that cater to individual preferences.However,trajectory data,a form encompassing various sensitive attributes,pose privacy concerns.Unauthorized disclosure of users’precise trajectory information can have severe consequences,potentially impacting their daily lives.Thus,this paper proposes the Similar User Discovery Method based on Semantic Privacy(SUDM-SP)for trajectory analysis.The approach involves employing a model that generates noise trajectories,maximizing expected noise to preserve the privacy of the original trajectories.Similar users are then identified based on the published noise trajectory data.SUDM-SP consists of two key components.Firstly,a puppet noise location,exhibiting the highest semantic expectation with the original location,is generated to derive noisesuppressed trajectory data.Secondly,a mechanism based on semantic and geographical distance is employed to cluster highly similar users into communities,facilitating the discovery of noise trajectory similarity among users.Through trials conducted using real datasets,the effectiveness of SUDM-SP,as a recommendation service ensuring user privacy protection is substantiated. | Weiqi Zhang Guisheng Yin Bingyi Xie | 2023 | High-Confidence Computing2023，3，3： | 0 |
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