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1Impact of different ablation strategies on the delayed cure after trans-catheter ablation for treating patients with atrial fibrillation显示文摘Background Delayed cure had been observed in recurrent cases after index ablation of atrial fibrillation (AF), however, its mechanism and incidence have not been elucidated in detail. This study aims to investigate the impact of different ablation strategies on the incidence of delayed cure and its possible mechanisms after trans-catheter ablation of AF. Methods One hundred and fifty-one consecutive cases with highly symptomatic, drug refractory AF were included in this study [M/F=109/42, mean age (56.0±11.2) (18-79) years]. Segmental pulmonary vein ablation (SPVA) was performed in 83 patients with the guidance of circular mapping catheter (SPVA Group), circumferential PV linear ablation (CPVA) was carried out in the rest 68 cases under the guidance of 3 dimensional mapping system in conjunction with circular mapping catheter (CPVA Group). Delayed cure was defined as that early recurrence of atrial tachyarrhythmias (AF, atrial tachycardia, or atrial flutter) after ablation procedure was no longer observed during subsequent follow-up, and stable sinus rhythm was maintained ≥2 months. Results Early recurrence of atrial tachyarrhythmias was detected in 41 cases from SPVA group and 23 cases from CPVA group, and delayed cure occurred in 21.9% (9/41) of the cases from SPVA group and 47.8% (11/23) of the cases from CPVA group, more delayed cure in later group was observed (P<0.05). Meanwhile, patients in SPVA group took a longer time to achieve a delayed cure [(27.0±18.0) days vs (14.0±8.1) days, P<0.05], and presented more recurrent episodes [(3.50±1.08) times a week vs (2.42±1.11) times a week, P<0.05]. However, recurrent episodes after index ablation were markedly decreased in cases with delayed cure from both groups (P<0.05). Conclusions Despite of an early recurrence of atrial tachyarrhythimas after index ablation of AF, delayed cure occurs in a significant number of patients undergoing either SPVA or CPVA. However, different ablation strategies place different impact on the delayed cure, more delayed cure is obtained with CPVA approach, and the delayed cure occurs earlier with this approach; the average recurrent episodes before delayed cure are also less frequently detected in CPVA group compared with those in SPVA group.DONGJian-zeng LIUXing-peng LONGDe-yong LIUXiao-qing WANGJing, FangDong-ping HAOPeng LIYong-sheng LIUChuang MAChang-sheng 2005Chinese Medical Journal2005,,14:9
2Process Dynamics and Fractal Analysis of New Phase Formation in Thermal Processes显示文摘Boiling and fouling are taken as typical examples of new phase formation process to be analyzed and discussed in this paper. The process dynamics of nucleate boiling is analyzed and its mechanism is discussed from the view point of self-organization. Fouling, which is a more complicated phenomenon of new phase formation, involves series of underlying processes. The morphology and fractal analysis of fouling on low-energy surface and that with fouling inhibitors are studied and discussed. It is suggested that considering the process dynamics, fractal analysis and self-organization, a new avenue of research should be found.WangJ ShenZ.W2001Journal of Thermal Science2001,10,2:6
3Biodegradation of azo dyes by genetically engineered azoreductase显示文摘A azoreductase gene with 537 bp was obtained by PCR amplification from Rhodobacter sphaeroides AS1 1737 The enzyme, with a molecular weight of 18 7 kD, was efficiently expressed in Escherichia coli and its biodegradation characteristics for azo dyes were investigated. Furthermore, the reaction kinetics and mechanism of azo dyes catalyzed by the genetically engineered azoreductase were studied in detail. The presence of a hydrazo-intermediate was identified, which provided a convincing evidence for the assumption that azo dyes were degraded via an incomplete reduction stage.WANGJing YANBin ZHOUJi-ti BAOYong-ming LUHong YUANXiao-dong 2005Journal of Environmental Sciences2005,17,4:4
4Impact on the tropical cyclone 'Vongfong' forecast using the QuikSCAT wind data显示文摘Since QuikSCAT is available in cloudy and rainy condition, its wind data are valuable in monitoring and real timeorecasting the wind field, especially in sparse genesis regions of tropical cyclones. In order to understand and investigate the impact of QuikSCAT wind data, the three-dimensional variational data assimilation (3D-VAR) of scatterometric wind data has been employed for the tropical cyclone “Vongfong” in the year 2002. The result shows that the QuikSCAT wind data have positive impact on the analysis and forecasting. But the positive impact is slight. The present results suggest that how to assimilate QuikSCAT wind data effectively is important and will be a challenge to meteorologists.LIUChunxia QIYiquan WANGJing WANQilin CHUPeter 2004Acta Oceanologica Sinica2004,23,3:3
5IDENTIFICATION OF GAS LIQUID FLOW REGIMES IN A HORIZONTAL FLOW USING NEURAL NETWORK显示文摘The knowledge of flow regimes is very important in the study of a two phase flow system. A new flow regime identification method based on a Probability Density Function (PDF) and a neural network is proposed in this paper. The instantaneous differential pressure signals of a horizontal flow were acquired with a differential pressure sensor. The characters of differential pressure signals for different flow regimes are analyzed with the PDF. Then, four characteristic parameters of the PDF curves are defined, the peak number (K 1 ), the maximum peak value (K 2 ), the peak position (K 3 ) and the PDF variance (K 4 ). The characteristic vectors which consist of the four characteristic parameters as the input vectors train the neural network to classify the flow regimes. Experimental results show that this novel method for identifying air water two phase flow regimes has the advantages with a high accuracy and a fast response. The results clearly demonstrate that this new method could provide an accurate identification of flow regimes.JIAZhi-hai NIUGang WANGJing 2005Journal of Hydrodynamics2005,17,1:2
6Rattan Cultivation for Edible Shoot Production in Guangzhou,Southern China显示文摘Field studies were conducted in the Jiuwantan Forest Farm,Huadu District of Guangzhou City from June 2004 to March 2006 to evaluate the effects of planting spacings(0.5 m × 0.5 m,0.5 m × 1.0 m and 1.0 m × 1.0 m) and different fertilizers(bio-fermented manure,NPK compound fertilizer and NPK mixed fertilizer) on the growth of Daemonorops margaritae grown under irrigation and full-light conditions for edible shoots production.The effects of application of different fertilizers on the mean height,length of stems and number of leaves of 30-month old seedlings were not statistically significant,but the planting spacings were(P < 0.05).The two trial plantations became harvestable 18 months after planting when about one-third of seedlings produced new shoots.Results obtained from a sample harvest 20 months after planting showed that the average number of new shoots(suckers) per plant was 1.8,the average lengths of stems and edible shoots(palm hearts) were 45.3 cm and 18.8 cm,respectively.The average fresh weights of defoliated stems and edible shoots were 182.2 g and 14.9 g,respectively.These results suggest that the productivity in the first harvest is rather low.HUANG Shi’neng1 JIANG Zehui2 ZHAO Xia1 XIAN Guangyong1 1.Research Institute of Tropical Forestry,Chinese Academy of Forestry,No.682 Guangshan Yilu,Tianhe District,Guangzhou 510520,P.R.China 2.International Centre for Bamboo and Rattan(ICBR),No.8 Futong Dongdajie,Wangjing,Chaoyang District,Beijing 100102,P.R.China 2010Chinese Forestry Science and Technology2010,9,3:2
7Frost formation on a super-hydrophobic surface under natural convection conditions 显示文摘Liu Z L Gou Y J WangJ T Cheng S Y 2008International Journal of Heat and Mass Transfer2008,51,25:1
8Major causes of death among men and women in China 显示文摘HeJ GuD WuX ReynoldsK DuanX Yaoc WangJ Chen CS Chen J Wildman RP Klag MJ Whelton PK 2005N Engl J Med2005,353,11:1
9Bismuth nanotuhes , A rational low-temperature synthetic route显示文摘Li Y D WangJ W Yang P D 2001Journal of the American Chemical Society2001,123,40:1
10Thesituationandrationalanalysisofchildrenusingintravenoushmnanimmunoglobulin显示文摘CAIZB LINY WANGJ 2012中国药学杂志2012,47,10:1
11The formation of a stable, helical conformation in poly (N-propargylam- ides) through synergic effects among their pendent groups 显示文摘Deng J P ZhaoW G WangJ M 2007Macromol Chem Phys2007,208,2:1
12显示文摘Xu-H Y YangBH WangJ F etal 2007J PolymSci Part A: Polym Chem2007,45,:1
13MRI findings of prostatic synovial sarcoma显示文摘Cheng YC WangJ H Shen SH 2007Br J Radiol2007,80,:1
14显示文摘WANGCui-ming(王舉敏) YANGBo(杨波) WANGJing etal(王晶等) 光谱实验室0,,:1
15AnaccumulativeX-raystreakcamerawithsub-600-fstemporalresolutionand50-fstimingjitter显示文摘LiuJ WangJ ShanB etal 2003ApplPhysLett2003,82,20:1
16The controversial links among calorie restriction, SIRTl, and resveratrol显示文摘Hu Y LiuJ WangJ 2011Free Radic Bioi Med2011,51,:1
17The research on cultivation problems of new type of peasants in Chongqing(重庆市新型农民培养问题研究)显示文摘WANGJ(王佳) 2009西南大学2009,1,:1
18A study of damage to hard tissue of goats due to industrial fluoride pollution 显示文摘WangJ D Zhan C W Chen Y F 1992Fluoride1992,25,3:1
19A novel line- ar algorithm for PSP problem显示文摘TANGJ L CHEN W SH WANGJ 2008Applied Mathe- matics and Computation2008,205,2:1
20Gastric atrophy and intestinal metaplasia before and after Helicobacter pylori eradication: a meta-analysis显示文摘WangJ Xu L Shi R 2011Digestion2011,83,4:1
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