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Pulmonary vein tachycardia after pulmonary vein isolation in patients with atrial fibrillation

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Chinese Medical Journal 2006年第7期119卷 551-556页

作者： MA Chang-shen dong Jian-zeng LIU Xing-peng LONG De-yong fang dong-ping hu Fu-li YU Rong-hui TANG Ri-bo HAO Peng LU Chun-shan Department of Cardiology Beijing Anzhen Hospital CapitalUniversity of Medical Sciences Beijing 100029 China

Background Pulmonary vein （PV） isolation has been developed to treat patients with atrial fibrillation （AF）, and the electrophysiological endpoint of PV isolation is the disappearance or dissociation of pulmonary vein potentials （PVPs）. Pulmonary vein tachycardia （PVT） is the dissociated PV rhythm with a rapid rate. However, the characteristics and significance of PVT after pulmonary vein isolation in patients with AF remains unclear. Methods From June 2003 to June 2005, a total of 285 consecutive patients with drug refractory AF were included in this study, and they underwent segmental pulmonary vein ablation （SPVA） or circumferential pulmonary vein ablation （CPVA）. PV isolation was the initial endpoint for both approaches with documenting disappearance or dissociation of PVPs. PVT was characterized as dissociated activities within PVs with a circle length （CL） of 〈300 ms, and was classified into organized PVT or disorganized PVT according to the variance of CL. Systematic follow-up was conducted after initial procedures. Continuous variables were analyzed by Student＇s t test and categorical variables were analyzed by chi-square test. Results Three hundred and fifteen PVs were ablated in 85 patients underwent SPVA approach, 400 circular lesions surrounding ipsilateral PVs （including 790 PVs） were produced in the rest of 200 patients received CPVA approach. Electrical isolation was achieved in all of these PVs. Of these, PVPs were abolished in 89.8% （992/1105） of the ablated PVs, dissociated PV rhythms were documented in the rest 10.2 % （113/1105） of the treated PVs. Among the 113 dissociated PV rhythms, 28 met the criteria of PVT with mean CL of （155±43） ms （2 PYTs in 2 patients received SPYA, 26 PYTs in 18 patients underwent CPVA）. PVT was more frequently documented in patients underwent CPVA approach [9.0% （18/200） vs 2.3% （2/85）, P=0.04]. During the 6-month follow-up, it was indicated that no significant difference existed in AF free rate between patients wi

关键词： atrial fibrillation pulmonary vein tachycardia

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珠三角区域跨界环境问题的经济分析

特区经济 2010年第12期 23-25页

作者：范东芳詹正华江南大学商学院江苏无锡214100

由于忽视了环境外部性的存在,目前珠江三角洲地区的跨界污染问题很严重;通过空间计量经济模型实证,发现某地区的污染排放量不止和本地区的经济增长有关系,也受邻近城市经济发展水平的影响,珠三角的环境质量与经济增长在空间上表现出相... 详细信息

由于忽视了环境外部性的存在,目前珠江三角洲地区的跨界污染问题很严重;通过空间计量经济模型实证,发现某地区的污染排放量不止和本地区的经济增长有关系,也受邻近城市经济发展水平的影响,珠三角的环境质量与经济增长在空间上表现出相互作用;最后给出了解决跨界环境问题的对策建议。

关键词：珠三角外部性跨界污染

Direct Photolithography of WO_(x)Nanoparticles for High‑Resolution Non‑Emissive Displays

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Nano-Micro Letters 2025年第3期17卷 297-309页

作者： Chang Gu Guojian Yang Wenxuan Wang Aiyan Shi Wenjuan fang Lei Qian Xiaofei hu Ting Zhang Chaoyu Xiang Yu‑Mo Zhang Laboratory of Optoelectronic Information Technology and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China Hangzhou Bay Laboratory of Advanced Nano‑Optoelectronic Materials and Devices Qianwan Institute of CNITECHNingbo 315336People’s Republic of China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012People’s Republic of China

High-resolution non-emissive displays based on electrochromic tungsten oxides(WOx)are crucial for future near-eye virtual/augmented reality interactions,given their impressive attributes such as high environmental stability,ideal outdoor readability,and low energy ***,the limited intrinsic structure of inorganic materials has presented a significant challenge in achieving precise patterning/pixelation at the micron ***,we successfully developed the direct photolithography for WOx nanoparticles based on in situ photo-induced ligand *** strategy enabled us to achieve ultra-high resolution efficiently(line width3600 cycles),as well as promising applications in electronic logos,pixelated displays,flexible electronics,*** success and advancements presented here are expected to inspire and accelerate research and development(R&D)in high-resolution non-emissive displays and other ultra-fine micro-electronics.

关键词： Electrochromic Direct photolithography WOx nanoparticles In situ photo-induced ligand exchange High-resolution displays

基于二维遍历搜索法的3RRR并联机器人运动学分析

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应用科学学报 2016年第6期34卷 778-788页

作者：单宁班超程东方胡雪艳武警工程大学装备工程学院西安710086

通过研究3RRR并联机器人的平面机构特点,用数值方法对其运动学正解进行分析求解,并用解析法对其运动学逆解进行分析求解.通过MATLAB仿真,用Pro/E建模加以验证.在运动学逆解基础上,运用二维遍历搜索法得到3RRR并联机构的工作空间.结论表... 详细信息

通过研究3RRR并联机器人的平面机构特点,用数值方法对其运动学正解进行分析求解,并用解析法对其运动学逆解进行分析求解.通过MATLAB仿真,用Pro/E建模加以验证.在运动学逆解基础上,运用二维遍历搜索法得到3RRR并联机构的工作空间.结论表明,当动平台的旋转角度Φ为0°时,其工作空间最大;当旋转角度Φ为π/2时,其工作空间最小.该方法可减小求解工作量,提高计算效率.

关键词：并联机器人运动学正逆解仿真工作空间

Modeling tactile perceived intensity for vibration from a coin eccentric rotating mass motor

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Science China Technological Sciences 2025年

作者： Yun fang Jingchen huANG Yujun WU Jiaqi dong Weichao GUO Xinjun SHENG State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Meta Robotics Institute Shanghai Jiao Tong University

Establishing the relationship between vibrotactile parameters and perceived intensity（PI） is of great significance in the regulation of desired sensations, which contribute to haptic interfaces in practical applications. Coin eccentric rotating mass（ERM） motors are routinely utilized due to their lightweight design and efficient ability to evoke strong tactile sensations. By adjusting input voltages, ERMs can yield different stimuli, but the effects of their physical properties on PI remain ***, we developed the physical model of the ERM-skin system and optimized the parameters affecting PI. Moreover, the relationship between stimulus and perception was derived based on Fechner?s law. Three experiments were conducted on fifteen subjects（ten males and five females, aged 24.40 ± 2.87 years） to identify the vibration parameters and corresponding PI to verify the proposed PI model. ERMs in this study were attached to phantom skin/forearm with slim adhesive tape to minimize the interference. Experiment 1 performed vibration calibration with ERM attached to the skin phantom to simulate the actual configuration. Then, the relative and absolute PI of subjects on specific stimuli were acquired in Experiments 2 and *** fitting reliability of the proposed PI model was evaluated on fifteen subjects with R2of 0.73 ± 0.07 and root mean squared error（RMSE） of 1.35 ± 0.28. Overall, the proposed PI model established the quantitative relationship between stimulus parameters（vibration parameters and physical parameters） and subjective PI, which provided theoretical support for ERM optimization and vibrotactile modulation.

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A Flexible Smart Healthcare Platform Conjugated with Artificial Epidermis Assembled by Three‑Dimensionally Conductive MOF Network for Gas and Pressure Sensing

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Nano-Micro Letters 2025年第2期17卷 601-620页

作者： Qingqing Zhou Qihang Ding Zixun Geng Chencheng hu Long Yang Zitong Kan Biao dong Miae Won Hongwei Song Lin Xu Jong Seung Kim State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea TheranoChem Incorporation Seoul 02856Republic of Korea

The rising flexible and intelligent electronics greatly facilitate the noninvasive and timely tracking of physiological information in telemedicine *** building bionic-sensitive moieties is vital for designing efficient electronic skin with advanced cognitive functionalities to pluralistically capture external ***,realistic mimesis,both in the skin’s three-dimensional interlocked hierarchical structures and synchronous encoding multistimuli information capacities,remains a challenging yet vital need for simplifying the design of flexible logic ***,we construct an artificial epidermal device by in situ growing Cu_(3)(HHTP)_(2) particles onto the hollow spherical Ti_(3)C_(2)T_(x) surface,aiming to concurrently emulate the spinous and granular layers of the skin’s *** bionic Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2) exhibits independent NO_(2) and pressure response,as well as novel functionalities such as acoustic signature perception and Morse code-encrypted message ***,a wearable alarming system with a mobile application terminal is self-developed by integrating the bimodular senor into flexible printed *** system can assess risk factors related with asthmatic,such as stimulation of external NO_(2) gas,abnormal expiratory behavior and exertion degrees of fingers,achieving a recognition accuracy of 97.6%as assisted by a machine learning *** work provides a feasible routine to develop intelligent multifunctional healthcare equipment for burgeoning transformative telemedicine diagnosis.

关键词： Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2)composites NO_(2)/pressure flexible sensors Health-monitoring Machine learning

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辽西李属坏死环斑病毒检测及其多样性分析

植物病理学报 2017年第1期47卷 15-25页

作者：李正男董雅凤张双纳张尊平范旭东任芳胡国君中国农业科学院果树研究所国家落叶果树脱毒中心兴城125100

采用RT-PCR对辽西地区采集的45份核果叶片样品进行了李属坏死环斑病毒(PNRSV)的鉴定,其中9份样品为阳性。以阳性样品总RNA为模板,克隆了PNRSV基因组RNA3近全长序列。序列长度在1 612~1 619 bp之间,一致性为93.8%~100%。以本研究获得的9... 详细信息

采用RT-PCR对辽西地区采集的45份核果叶片样品进行了李属坏死环斑病毒(PNRSV)的鉴定,其中9份样品为阳性。以阳性样品总RNA为模板,克隆了PNRSV基因组RNA3近全长序列。序列长度在1 612~1 619 bp之间,一致性为93.8%~100%。以本研究获得的9个和Gen Bank登录的42个PNRSV近全长RNA3序列为基础,截取cp基因、mp基因和近全长RNA3序列分别构建系统发育树,三者结果一致:均可将51个PNRSV分离物分为4个组,即PV32、PV96、PE5和本文报道的一个新的PNRSV组,9个辽西分离物分别属于PV32组或PV96组。本研究明确了我国辽西地区PNRSV的遗传多样性,证明了PNRSV基因组RNA3在研究PNRSV遗传多样性中的适用性,同时发现了一个新的PNRSV组,对于PNRSV遗传多样性研究意义重大。

关键词：李属坏死环斑病毒基因组RNA3 cp基因 mp基因遗传多样性

Performance Analysis of Hybrid Distribution in human-Centric Multimedia Networking

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Chinese Journal of Electronics 2016年第4期25卷 761-767页

作者： hu Yuxiang dong fang LAN Julong National Digital Switching System Engineering and Technological Research Center

With the booming of human-centric multimedia networking(HMN),there are rising amount of human-made multimedia that needs to distribute to consumers with higher speed and *** distribution of Client/Server(C/S) and Peer-to-Peer(P2P) have been successfully deployed on the Internet and the practical benefits have been widely reported,while its theoretical performance remains unknown for mass data delivery *** paper presents an analytical and experimental study on the performance of accelerating large-scale hybrid distribution over the *** particular,this paper focuses on the user behavior in HMN and establishes a user behavior model based on the Kermack-McK endrick model in *** expressions of average delay in HMN are then derived based on C/S,P2 P and hybrid distribution,*** simulation shows how to design and deploy a hybrid distribution system of HMN that helps to bridge the gap between system ultilization and quality of service,which provides direct guidance for practical system design.

关键词： Hybrid distribution Peer-to-peer Client/server Behaviour model Performance analysis

Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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Science China Chemistry 2025年第1期 369-376页

作者： Song-Meng Wang Hao Nian Yan-fang Wang Li-Shuo Zheng Yu-Tao Zheng Yi-Wei dong Liping huang Xiaoping Wang Wei Jiang Liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

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