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| 1 | Electroanatomical systems to guided circumferential pulmonary veins ablation for atrial fibrillation: initial experience from comparison between the Ensite/NavX and CARTO system显示文摘Background The circumferential pulmonary vein ablation (CPVA) has been proved effective for atrial fibrillation (AF) treatment and is becoming more widely accepted and practiced. This study aims to evaluate the characteristics of the CARTO and the Ensite/NavX system and draw a comparison between them on the aspects of procedural parameters and clinical effectiveness.Methods Seventy-five cases with paroxysmal or chronic symptomatic AF were randomly assigned to CPVA procedure guided by the Ensite/NavX system (group Ⅰ, n=40) and by the CARTO system (group Ⅱ, n=35). After successful transseptal procedure, the geometry of left atrium was created under the guidance of the two systems. Radiofrequency energy was applied to circumferentially ablate tissues out of pulmonary veins’ (PVs’) ostia. In cases with chronic AF, linear ablation was applied to modify the substrate of left atrium ((LA).) The endpoint of the procedure was complete PVs isolation. Results Seventy-five cases underwent the procedure successfully. The total procedure and fluoroscopic durations in group Ⅱ were significantly shorter than in group Ⅰ [(150±23) min and (18±17) min versus (170±34) min and (25±16) min, P=0.03 and 0.04, respectively]. There was no significant difference in the fluoroscopic and procedure durations for geometry creation between group Ⅰ and group Ⅱ [(8±4) min and (16±11) min versus (5±4) min and (14±8) min, respectively]. The fluoroscopic durations for CPVA were (15±5) min in group Ⅰ versus (10±6) min in group Ⅱ (P=0.05), and the CPVA procedural durations were significantly shorter in group Ⅱ than in group Ⅰ [(18±11) min versus (25±10) min, P=0.04]. AF was terminated by radio frequency delivery in 14 cases (35%) in group Ⅰ versus 5 cases (14%) in group Ⅱ (P=0.035). After CPVA complete PV isolation was attained in 26 cases (65%) in group Ⅰ versus 11 cases (31%) in group Ⅱ (P=0.004). During a mean follow-up of 7 months, 32 (80%) cases in group Ⅰ and 24 (69%) cases in group Ⅱ were arrhythmia-free (P=0.06). One case developed pericardium effusion and another one case was found to have intestinal artery thrombosis in group Ⅱ. One case had moderate hemothorax in group Ⅰ. All the complications were cured by proper treatment. No PV stenosis was observed. Conclusions The CPVA procedure for atrial fibrillation is effective and safe. Although there is difference between the CARTO and the Ensite/NavX system, the CPVA procedure guided by either of them yields similar clinical results. | LIUXu WANGXin-hua GUJia-ning ZHOULi QIUJian-hua | 2005 | Chinese Medical Journal2005，，14： | 5 |
| 2 | Determination of time-and size-dependent fine particle emission with varied oil heating in an experimental kitchen显示文摘Particulate matter(PM) from cooking has caused seriously indoor air pollutant and aroused risk to human health.It is urged to get deep knowledge of their spatial-temporal distribution of source emission characteristics,especially ultrafine particles(UFP < 100 nm) and accumulation mode particles(AMP 100-555 nm).Four commercial cooking oils are auto dipped water to simulate cooking fume under heating to 255℃ to investigate PM emission and decay features between 0.03 and 10 μm size dimension by electrical low pressure impactor(ELPI) without ventilation.Rapeseed and sunflower produced high PM_(2.5) around5.1 mg/m^3,in comparison with those of soybean and corn(5.87 and 4.55 mg/m^3,respectively)at peak emission time between 340 and 450 sec since heating oil,but with the same level of particle numbers 6-9 × 10~5/cm^3.Mean values of PM_(1.0)/PM_(2.5) and PM_(2.5)/PM_(10) at peak emission time are around 0.51-0.55 and 0.23-0.29.After 15 min naturally deposition,decay rates of PM_(1.0),PM_(2.5) and PM_(10) are 13.3%-29.8%,20.1%-33.9%and 41.2%-54.7%,which manifest that PM_(1.0) is quite hard to decay than larger particles,PM_(2.5) and PM_(1.0).The majority of the particle emission locates at 43 nm with the largest decay rate at 75%,and shifts to a larger size between137 and 555 nm after 15 min decay.The decay rates of the particles are sensitive to the oil type. | Shuangde Li Jiajia Gao Yiqing He Liuxu Cao Ang Li Shengpeng Mo Yunfa Chen Yaqun Cao | 2017 | Journal of Environmental Sciences2017，29，1： | 3 |
| 3 | Landscape Pattern Optimization of Chengdu Based on Modern Garden City显示文摘TOptimization of regional landscape pattern is significant for improving function and value of ecosystem,and restraining the expansion of urban layout.Taking Chengdu City for example,this paper applied RS and GIS techniques,landscape indexes and ecological service function evaluation to further analyze the temporal and spatial characteristics of landscape pattern and spatial differences of regional ecological functions,and on this basis,identified the spatial distribution of ecological source lands.Based on the long-term objective of building Chengdu into a modem garden city,this paper applied the accumulative cost distance model and introduced garden city theory to construct regional ecological corridors and ecological nodes,and explored the approaches of optimizing landscape pattern of modem garden city.The results showed that a great deal of arable land has been transferred to construction land in the urbanization;intensity of regional ecological functions showed obvious spatial differences;ecological source lands were mainly distributed in the Longmen Mountain,the Qionglai Mountain,the Changqiu Mountain and the Longquan Mountain;according to actual conditions of the study area,the road ecological corridors,river corridors and agricultural corridors in the layout of 'four rings and six radial corridors' were constructed;ecological nodes dominated by intersection,wetland and forest park were formed.This research method and results are significant references for building Chengdu into a modem garden | LIUXu LI Yonghong WANG Kaijun FU Zeqiang | 2016 | Journal of Landscape Research2016，8，4： | 2 |
| 4 | Microstructure and ablation behavior of SiC coated C/C–SiC–ZrC composites prepared by a hybrid infiltration process显示文摘 | Chunxuan Liu Liuxu Cao Jianxun Chen Liang Xue Xian Tang Qizhong Huang | 2013 | Carbon2013，，： | 2 |
| 5 | Trainingcostsensitiveneuralnetworkswithmethodsaddressingtheclassimbalanceproblem显示文摘 | ZHOUZhihua LIUXuying | 2006 | IEEETransonKnowledgeandDataEngineering2006，18，1： | 1 |
| 6 | 显示文摘 | Zhang Liuxue Liu Peng Su Zhixing | 2006 | Mater Chem Phys2006，98，： | 1 |
| 7 | Exploratoryundersamplingforclassimbalancelearning显示文摘 | LIUXuying WUJianxin ZHOUZhihua | 2009 | IEEETransonSystems Man andCybernetics PartB:Cybernetics2009，39，2： | 1 |
| 8 | Renal expression of monocyte chemoattractant protein-1 in lupus autoimmune显示文摘 | Zoja C Liuxu | 1997 | J Am Soc Nephrol1997，8，： | 1 |
| 9 | 显示文摘 | LIDan-Dan(李丹丹) LIUZhong-Qing(刘中清) LIUxu(刘旭) etal | | ChineseJlnorgChem(WujiHuaxneXuebao)0，，： | 1 |
| 10 | Low temperature deposition of TiO2 thin films on polyvinyl alcohol fibers with photocatalytical and antibacterial activities显示文摘 | Zhang Liuxue Wang Xiulian Liu | 2008 | Applied Surface Science2008，254，6： | 1 |
| 11 | Preparation of an- atase nanocrystallines from low concentration precursor solu- tion via a microwave assisted liquid phase deposition ( MW- LPD) process 显示文摘 | ZHANG Liuxue LIU Peng SU Zhixing | 2006 | Materials Research Bulletin2006，41，： | 1 |
| 12 | 显示文摘 | ZhangLiyan(张立岩) LiYan(李岩) ZhaoLizhi(赵莉芝) LiuXue(刘学) WangXin(王鑫) MaRujiang(马如江) AnYingli(安英丽) ShiLinqi(史林启) | 2010 | 高等学校化学学报2010，，31： | 1 |
| 13 | Low temperature deposition of TiOz thin films on polyvinyl alcohol fibers with photocatalytical and antibacterial activities显示文摘 | Zhang Liuxue Wang Xiulian Liu Peng | 2008 | Applied Surface Science2008，254，6： | 1 |
| 14 | Preparation of PANLTiO2 nanocomposites and their solid-phase photocatalytic degradation 显示文摘 | Zhang Liuxue Liu Peng Su Zhixing | 2006 | Polymer Degradation and Stability2006，，： | 1 |
| 15 | Adsorption of dyes fromaqueous solu- tions or suspensions with clay nanoadsorbents 显示文摘 | PENG Lihua ZHANG Liuxue | 2007 | Separation and Purification Technology2007，58，1： | 1 |
| 16 | Mechanical design of the horizontal collimator for HEPS storage ring显示文摘Background Horizontal collimators in the storage ring of high energy photon source(HEPS)are used to localize the majority of the particle loss,making it possible to set local shields.Moreover,movable jaws of the collimators are also designed as beam dumps for the machine protection,to absorb and scatter the mis-steered beam.Because of the compact lattice,each collimator should be installed between the limited space of 240 mm in the beam direction.It is necessary for the collimators to have good thermal dissipation ability to endure the synchrotron radiation and HOM load,as well as good resistance to thermal-shock from sudden beam loss simultaneously,which brings great challenges to the design.Purpose The purpose of this paper is to introduce the designing scheme of the collimators in HEPS,including the structure design and the analyses of the key components.Method Thermal and mechanical calculation has been done,based on which the jaw structure has been optimized.Besides,the modal analysis of the whole magnet-collimator-support assembly has been studied to optimize the shields structure.Result Graphite will be used as the tip for movable jaws in the collimators,which is attached to copper by vacuum brazing.The maximum temperature of the jaw during normal operation is 131°C,while maximum stress of the graphite–copper weld joint is 15.6 MPa.Graphite tip can resist thermal shock caused by whole mis-steered beam.Eigen frequency of the standard assembly is acceptable for HEPS.Conclusion The results of calculations indicate that the present structure can work well for considered operating modes. | Liuxu Zong Haijing Wang Chunhua Li Huamin Qu Lei Wu Zihao Wang Yaliang Zhao Guangyi Tang Hao Yang Na Wang Haoyu Shi | 2022 | Radiation Detection Technology and Methods2022，6，4： | 1 |
| 17 | Photocatalytic activity of anatase thin films coated cotton fibers prepared via a microwave assisted liquid phase deposition process显示文摘 | Zhang Liuxue Wang Xiulian Liu Peng | 2007 | Surface & Coatings Technology2007，201，18： | 1 |
| 18 | Photocatalysis anatase thin films coated PAN fibers prepared at low temperature显示文摘 | ZHANG Liuxue LIU Peng SU Zhixing | 2006 | Mater Chem Phys2006，98，1： | 1 |
| 19 | Design and test of the motion system for HEPS storage ring horizontal collimator显示文摘Background Collimators in the storage ring of high-energy photon source(HEPS)are used to localize the beam loss,making it possible to set local radiation shields.The motion system of the collimator is used to adjust the position of the movable jaws for controlling the beam loss precisely.Moreover,dump mode of the collimator increases the risk of jaw damage from beam heat deposition.According to the requirements of motion accuracy and the severe working condition of the collimators,a new design of a two-axis motion system for the movable jaws is proposed,realizing high-precision control and extending the lifetime.Purpose The purpose of this paper is to introduce the designing scheme of the motion system for HEPS storage ring horizontal collimators,including the analyses of the key components,the structure design of the motion system and test results of the prototype.Method Temperature excursions of the movable jaw are calculated theoretically and analyzed by ANSYS,respectively.The motion accuracy of the system is measured by coordinate measuring machine.Result The temperature excursion is simulated as 1883 K while using graphite as the absorbing material at dump mode.The motion system consists of a mobile slide for aperture adjustment and a manual wedge jack for vertical adjustment.The average coupled deviation in horizontal direction of the wedge jack is 0.031 mm,while the maximum positioning deviation of the slide is 0.014 mm,both having good repeatability and being compensable.Conclusion Test results of the prototype indicate that the new design of the motion system is applicable to the horizontal collimator in HEPS storage ring.The problem of the jaw rotation in the horizontal movement is found,and the solution is given. | Liuxu Zong Haijing Wang Chunhua Li Guangyi Tang Huamin Qu Shang Lu | 2023 | Radiation Detection Technology and Methods2023，7，4： | 0 |
| 20 | Organic Electroluminescent Thin Film Using 8-hydroxyquinoline Zinc as Emitting Layer显示文摘Organic electroluminescent thin film using Znq 2 (Znq 2) as the emitting layer material with structure of glass/ITO/Znq 2/Al (cell)was fabricated. The V I curve, V B curve and electroluminescent spectra of the cell were measured. Meanwhile the fluorescent spectra, excited spectra and absorption spectra of Znq 2 with powder and film states were also measured. | FANXi-zhi LIUXu 等 | 2002 | Semiconductor Photonics and Technology2002，8，1： | 0 |
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