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| 1 | Contour representation based on wedgelet显示文摘Aiming at the shortcomings of the existing wed gelet compression arithmetics, a novel contour-representing algorithm based on wedgelets is presented in this paper. Firstly the input image is binarized and the most optimized wedgelets ar e found by means of quadtree framework. Then the contours are reconstructed by a pplying the wedgelets, the data volume is compressed, and the shortcomings of th e contour representation based on normal wavelet are ameliorated, the better ef fect for the visualization is obtained, too. | Liu Zeyi~1, Sun Ziqiang~ 2,3 , Xu Ling~2 & Peng Xiang~ 4,5 1. Dept. of Mathematics of Science Coll., Shenzhen Univ., Shenzhen 518060, P.R. China 2. Dept. of Mathematics of Science Coll., Tianjin Univ., Tianjin 300072, P.R. Ch ina 3.Tianjin Foreign Studies Univ., Tianjin 300204, P.R. China 4. Inst. of Optoelectronics, Shenzhen Univ., Shenzhen 518060, P.R. China 5. National Lab of Precision Measurement Technology and Instrumentation, Tianjin 300072, P.R. China | 2006 | Journal of Systems Engineering and Electronics2006，17，2： | 2 |
| 2 | A novel surrogate modeling strategy of the mechanical properties of 3D braided composites显示文摘In this paper,a surrogate-based modeling methodology is developed and presented to predict the elastic properties of three dimensional(3 D)four-directional braided composites.Using this approach,the prediction process becomes feasible with only a limited number of training points.The surrogate models constructed using Finite Element(FE)method and Diffuse Approximation,reduce the computational time and cost for preparing experimental samples.In the FE model,multiscale method is applied to couple the computations of elastic properties at microscale and mesoscale.Subsequently,a parametric study is performed to analyze the effects of the three design parameters on the elastic properties.Satisfactory results are obtained via the surrogatebased modeling predictions,which are compared with the experimental measurements.Moreover,the predictions obtained from surrogate models concur well with the FE predictions.This study orients a new direction for predicting the mechanical properties based on surrogate models which can effectively reduce the sample preparation cost and computational efforts. | Zeyi LIU Yuliang HOU Qiaoli ZHAO Cheng LI | 2020 | Chinese Journal of Aeronautics2020，33，10： | 2 |
| 3 | Process operation performance of PDMS membrane pervaporation coupled with fermentation for efficient bioethanol production显示文摘There would be strong product inhibition on ethanol fermentation process if ethanol is not removed in situ from broth. PDMS membrane pervaporation coupled with fermentation is a promising process for efficient bioethanol production since ethanol inhibition is relieved or eliminated. From the perspective of process operation, membrane separation performance, ethanol fermentation performance and the subsequent processing on membrane downstream are the three key issues. This review aims at contributing a comprehensive overview on the operation performance of the integrated process. The state-of-the-art of the three key issues related to the operation performance is focused. Finally, the tentative perspective on the possible future prospects of the integrated process is briefly presented. | Senqing Fan Jingyun Liu Xiaoyu Tang Wenguo Wang Zeyi Xiao Boya Qiu YuyangWang Shizhao Jian Yangmei Qin Yinan Wang | 2019 | Chinese Journal of Chemical Engineering2019，27，6： | 2 |
| 4 | The Solar Upper Transition Region Imager(SUTRI)Onboard the SATech-01 Satellite显示文摘The Solar Upper Transition Region Imager(SUTRI)onboard the Space Advanced Technology demonstration satellite(SATech-01),which was launched to a Sun-synchronous orbit at a height of~500 km in 2022 July,aims to test the on-orbit performance of our newly developed Sc/Si multi-layer reflecting mirror and the 2k×2k EUV CMOS imaging camera and to take full-disk solar images at the Ne VII 46.5 nm spectral line with a filter width of~3 nm.SUTRI employs a Ritchey-Chrétien optical system with an aperture of 18 cm.The on-orbit observations show that SUTRI images have a field of view of~416×416 and a moderate spatial resolution of~8″without an image stabilization system.The normal cadence of SUTRI images is 30 s and the solar observation time is about16 hr each day because the earth eclipse time accounts for about 1/3 of SATech-01's orbit period.Approximately15 GB data is acquired each day and made available online after processing.SUTRI images are valuable as the Ne VII 46.5 nm line is formed at a temperature regime of~0.5 MK in the solar atmosphere,which has rarely been sampled by existing solar imagers.SUTRI observations will establish connections between structures in the lower solar atmosphere and corona,and advance our understanding of various types of solar activity such as flares,filament eruptions,coronal jets and coronal mass ejections. | Xianyong Bai Hui Tian Yuanyong Deng Zhanshan Wang Jianfeng Yang Xiaofeng Zhang Yonghe Zhang Runze Qi Nange Wang Yang Gao Jun Yu Chunling He Zhengxiang Shen Lun Shen Song Guo Zhenyong Hou Kaifan Ji Xingzi Bi Wei Duan Xiao Yang Jiaben Lin Ziyao Hu Qian Song Zihao Yang Yajie Chen Weidong Qiao Wei Ge Fu Li Lei Jin Jiawei He Xiaobo Chen Xiaocheng Zhu Junwang He Qi Shi Liu Liu Jinsong Li Dongxiao Xu Rui Liu Taijie Li Zhenggong Feng Yamin Wang Chengcheng Fan Shuo Liu Sifan Guo Zheng Sun Yuchuan Wu Haiyu Li Qi Yang Yuyang Ye Weichen Gu Jiali Wu Zhe Zhang Yue Yu Zeyi Ye Pengfeng Sheng Yifan Wang Wenbin Li Qiushi Huang Zhong Zhang | 2023 | Research in Astronomy and Astrophysics2023，23，6： | 1 |
| 5 | A learning automata based algorithm for optimization of Continuous Complex Functions显示文摘 | Zeng Xianyi Liu Zeyi | 2005 | Information Science2005，174，34： | 1 |
| 6 | Experimental study on filtering mixed solid-liquid dust with a sliding granular bed filter显示文摘The filtration of mixed dust that included a small number of melted(liquid)particles was studied in an experimental granular bed filter(GBF).Results show that the collection efficiency of dust containing melted particles is higher than that of dust composed of solid particles but the pressure drop from the former is higher than that of the latter.The collection efficiency and pressure drop increase as the concentration of melted particles increases.A surface sliding GBF exhibits good comprehensive performance when filtering dust,especially dust containing a mix of solid and liquid particles.The effects of the gas temperature,gas velocity,sliding filter bed thickness,and sliding collector flux on filter performance were also examined.Based on the experimental results,correlations for the collection efficiency and pressure drop for mixed dust are presented. | Yankai Peng Chuanping Liu Li Wang Shaowu Yin Lige Tong Zeyi Jiang | 2021 | Particuology2021，19，5： | 1 |
| 7 | Numerical Simulation of Flow and Heat Transfer from Slot Jets Impinging on a Cylindrical Convex Surface显示文摘Flow and heat transfer characteristics of slot jets impingement to a cylindrical convex surface are numerically investigated.Suitable turbulence models have been determined through comparison with the experimental data.Flow structures are described and impingement heat transfer characteristics are discussed.The effects of Re,H/B and D/B on single-slot jets impingement heat transfer are analyzed and heat transfer characteristics of multiple-slot jets are investigated.The results show that:Gas flows along the convex surface and boundary layer separation occurs in both single and multiple-slot jets impingement.A maximum stagnation Nu appears at H/B=8 and the local Nu decreases with increasing H/B in the region far away from the stagnation.The Nu in the stagnation region decreases with increasing D/B but the Nu is nearly the same in the region far away from the stagnation.Pressure gradient is an important factor on heat transfer enhancement.Correlations of the Num for single-slot,double-slot and quadric-slot jets impinging on a convex surface are obtained.It indicates the effects of Re and D/B on Num could become more important in less slot jets impingement. | Zeyi JIANG Cuicui LIU Xinxin ZHANG Qiang MA Yusheng SUN | 2011 | Journal of Thermal Science2011，20，5： | 1 |
| 8 | CD151 represses mammary gland development by maintaining the niches of progenitor cells显示文摘 | Yuanqin Yin Xinyu Deng Zeyi Liu Lauren A Baldwin Jason Lefringhouse Jiayang Zhang John T Hoff Sonia F Erfani Edmund B Rucker Kathleen O’Connor Chunming Liu Yadi Wu Binhua P Zhou Xiuwei H Yang | 2014 | Cell Cycle2014，，17： | 1 |
| 9 | JAK/STAT3 signaling is required for TGF-β-induced epithelial-mesenchymaltransition in lung cancer cells显示文摘 | Reng-Yun Liu Yuanyuan Zeng Zhe Lei Longqiang Wang Haiping Yang Zeyi Liu Jun Zhao Hong-Tao Zhang | 2014 | International Journal of Oncology2014，，5： | 1 |
| 10 | Morphological,histological and molecular characteristics of Myxobolus spp.(Cnidaria:Myxozoa)infecting the kidney of silver carp in Lake Taihu显示文摘Myxozoans are common microscopic endoparasites in fish,and some are highly pathogenic to their wild and farmed fish hosts.In the present study,myxosporeans infection in the kidney of silver carp Hypophthalmichthys molitrix(Valenciennes,1844)from Lake Taihu,was investigated,and two dominate species,Myxobolus lieni(Nie&Li,1973)and M.varius(Achmerov,1960),with infection prevalence 60.2%and 35.2%,respectively,were well characterized based on morphological,histopathological and DNA sequence data.M.lieni formed small roundish plasmodia in the epithelial cells of renal tubules.The mature myxospores appeared suborbicular,slightly flat in frontal view and fusiform shaped in sutural view.Dispersed myxospores of M.varius were found in the renal interstitium without forming plasmodia structures and enclosed within melano-macrophage centers.The spore appeared elliptical in frontal view,with wider anterior than posterior and shuttle shaped in sutural view.Interestingly,the occurrence of myxozoans in the kidney detected with SSU rDNA PCR and clone sequencing,revealed co-infection of five Myxobolus species.BLASTn search indicated SSU r DNA gene sequences obtained here were not identical to any sequence available in GenBank.Phylogenetic analyses showed that the five Myxobolus species detected here were clustered together,forming a separate clade of cyprinid-infecting myxozoans. | Qingjie Zhou Zeyi Cao Zhipeng Gao Bingwen Xi Kai Liu | 2023 | Zoological Systematics2023，48，2： | 0 |
| 11 | Design,Fabrication and Assembly of the Solar Upper Transition Region Imager(SUTRI)显示文摘The Solar Upper Transition Region Imager(SUTRI)focuses on the solar transition region to achieve dynamic imaging observation of the upper transition region.In this paper,we report the optical system design,mechanical design,ultrasmooth mirror manufacture and measurement,EUV multilayer film coating,prelaunch installation and calibration for the SUTRI payload at IPOE,Tongji University.Finally,the SUTRI carried by the SATech-01 satellite was successfully set to launch.All functions of this telescope were normal,and the observation results obtained in orbit were consistent with the design. | Zhanshan Wang Jun Yu Runze Qi Chunling He Zhengxiang Shen Li Jiang Weichen Gu Jiali Wu Zhe Zhang Pengfeng Sheng Yifan Wang Yue Yu Zeyi Ye JingJing Xia Yujie Xing Hongfei Jiao Bin Ma Qiushi Huang Zhong Zhang Xianyong Bai Yuanyong Deng Hui Tian Nange Wang Lun Shen Song Guo Lei Jing Xiaobo Chen Yang Gao Xiaocheng Zhu Xiaofeng Zhang Junwang He Qi Shi Shuo Liu Xingzi Bi | 2023 | Research in Astronomy and Astrophysics2023，23，9： | 0 |
| 12 | Determination of void boundary in a packed bed by laser attenuation measurement显示文摘Voids are important regions in some industrial processes,particularly in the iron-making process,because a void is a zone in which gas-solid heat transfer and reactions occur.This paper presents a 3D experimental study of void formation measurement with 2D projection in a packed bed using an optical method.By developing an experimental laser-attenuation scanning method,invisible voids that form in a packed bed can be detected and identified as relatively stable ellipsoids.The effects of various operational parameters on void formation are analyzed in terms of the resulting void sizes and shapes.The results show that the void shape that forms in the packed bed is close to an ellipsoid and is relatively stable.The void size is positively correlated with the blast volume rate and is negatively correlated with the blowpipe diameter.The blowpipe depth has no significant effect on either the void formation or size.The blast angle affects the void location strongly;when this angle is increased,the void moves upward.The information and methods obtained in this experiment are significant in aiding understanding of the mechanism of void formation in gas-solid reactors. | Yuanxiang Lu Zeyi Jiang Xinru Zhang Sihan Liu Jingsong Wang Xinxin Zhang | 2020 | Particuology2020，18，4： | 0 |
| 13 | Simultaneous recovery of phosphorus and nitrogen from liquid digestate by vacuum membrane distillation with permeate fractional condensation显示文摘A vacuum membrane distillation(VMD)process with permeate fractional condensation on membrane downstream has been developed for simultaneous recovery of phosphorus and nitrogen from liquid digestate.The polytetrafluoroethylene(PTFE)membrane flux could reach 6000 g·m-2·h-1 with the rejection efficiency of total phosphorus(TP)over 0.99,under the condition of flowrate being 120 L·h-1 and temperature being 40°C.Membrane fouling occurred with a film of organics and microorganism deposited on the surface of the membrane.Membrane flux could be reversed after the membrane was rinsed by water.Higher feed temperature and flowrate could improve the membrane flux,while hardly affect the rejection efficiency of total phosphorus.The concentration of TP could reach 1600 mg·L-1 after membrane distillation,which is about 5 times of that in initial liquid digestate.On the downstream of the membrane,some of the permeate vapor was condensed under the vacuum condition and most of water was collected here.The remaining vapor enriched with total nitrogen(TN)was compressed and pumped to the atmospheric condition to condense.The TN concentration in atmospheric condensate was as high as 7000 mg·L-1 with the process separation factor for ammonia being enhanced to 114. | Boya Qiu Senqing Fan Xiaoyu Tang Bufan Qi Liangwei Deng Wenguo Wang Jingyun Liu Yuyang Wang Zeyi Xiao | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 0 |
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