检索结果-南通市图书馆

The influence of metabolic syndrome on atrial fibrillation recurrence: five-year outcomes after a single cryoballoon ablation procedure

引用

Journal of Geriatric Cardiology 2021年第12期18卷 1019-1028页

作者： Yu XIA Xiao-Feng LI Jun LIU Miao YU pi-hua fang Shu ZHANG State Key Laboratory of Cardiovascular Disease Cardiac Arrhythmia CenterFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

BACKGROUND Metabolic syndrome(MetS)has been reported as a risk factor of atrial fibrillation(AF)recurrence after radi-ofrequency catheter *** study aimed to investigate the long-term influence of MetS on paroxysmal AF recurrence after a single cryoballoon ablation procedure,which was scarcely investigated yet in Chinese *** In total,137 paroxysmal AF patients who had successfully completed a single cryoballoon ablation procedure at Fuwai Hospital,Beijing,China from December 2013 to October 2015 were *** for patients with AF recurrence,all patients were followed up for no less than five *** predictors of AF recurrence were determined by Cox propor-tional hazards regression *** Among 137 paroxysmal AF patients,91 patients(66.4%)had successfully achieved overall five-year follow-up after a single cryoballoon ablation procedure,and 44 patients(32.1%)had *** with MetS had a significant lower incidence of freedom from AF recurrence than those without MetS(50.0%vs.74.2%,log-rank P<0.01)during the five-year ***(HR=1.95,95%CI:1.069−3.551,P=0.030)was an independent predictor of AF recurrence after adjusting for multiple *** the second year post cryoballoon ablation procedure,the recurrence rate of AF gradually increased in patients with MetS,in con-trast,decreased recurrence rate of AF in patients without *** MetS is an independent predictor for five-year AF recurrence after a single cryoballoon ablation procedure in paroxysmal AF *** therapy of AF and MetS may improve the long-term outcomes of AF patients.

关键词： balloon fibrillation atrial

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

RADIOFREQUENCY CATHETER ABLATION OF PERMANENT ATRIAL FIBRILLATION UNDER GUIDANCE OF CARTO-MERGE TECHNIQUE

引用

Chinese Medical Sciences Journal 2007年第3期22卷 156-161页

作者： Zhen-fang Ren pi-hua fang Fu-sheng Ma Jian-min Chu Jian Ma Shu Zhang Center of Arrhythmia Diagnosis and Treatment Cardiovascular Institute ＆ Fuwai HospitalChinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100037

Objective To investigate the feasibility and effectiveness of radiofrequency catheter ablation (RFCA) to treat permanent atrial fibrillation (AF) under the guidance of Carto-Merge technique. Methods Fifteen male patients with permanent AF underwent RFCA under the guidance of Carto-Merge technique. The mean age was 54.00±10.44 years, and duration of AF was 23.66±14.93 months. Cardiac magnetic resonance angiography (MRA) was performed to obtain pre-procedural three-dimensional (3D) images on the anatomy of left atrium (LA) and pulmonary veins (PVs) before RFCA procedure. Then the electroanatomical map was integrated with 3D images of MRA to form Carto-Merge map that guided step-by-step ablation strategy of permanent AF. Circumferential PV ablation was performed first until complete PVs electric isolation confirmed by Lasso catheter. If AF was not terminated, lesion lines on roof of LA, mitral isthmus, and tricuspid isthmus were produced. Results The episodes of AF were terminated during RFCA in 2 patients, by direct current cardioversion in the remaining 13 patients. Transient AF occurred in 2 patients after ablation on 1st day and 1st week respectively, AF terminated spontaneously not long after taking metoprolol. One patient developed persistent atrial flutter (AFL) in 2 months after procedure and AFL was eliminated by the second ablation. Persistent AF recurred on 1st day, 1st and 5th week respectively in 3 patients, and did not terminate after 3 months even though amiodarone was given. The remaining 12 patients were all free of AF during 2-11 months of follow-up. The recent success rate for RFCA of permanent AF was 80%. Conclusions Carto-Merge technique can effectively guide RFCA of permanent AF. When combined with single Lasso mapping, it can simplify the mapping, lower expenses, and enhance the success rate of RFCA of permanent AF.

关键词： radiofrequency catheter ablation atrial fibrillation Carto-Merge magnetic resonance angiography

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Catheter ablation of premature ventricular complexes associated with false tendons: A case report

引用

World Journal of Clinical Cases 2020年第2期8卷 325-330页

作者： Ya-Bing Yang Xiao-Feng Li Ting-Ting Guo Yu-He Jia Jun Liu Min Tang pi-hua fang Shu Zhang Cardiovascular Medicine Department Beijing Renhe HospitalBeijing 102600China Center for Cardiac Arrhythmia Fuwai HospitalNational Center for Cardiovascular DiseasesState Key Laboratory of ChinaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China

BACKGROUND False tendon is a common intraventricular anatomical variation. It refers to a fibroid or fibromuscular structure that exists in the ventricle besides the normal connection of papillary muscle and mitral or tricuspid valve. A large number of clinical studies have suggested that there is a significant correlation between false tendons and premature ventricular complexes. However, few studies have verified this correlation during radiofrequency catheter ablation of premature ventricular *** SUMMARY A 45-year-old male was admitted to receive radiofrequency ablation for symptomatic premature ventricular complexes. A three-dimensional model of the left ventricle was established by intracardiac echocardiography using the CartoSound^TM mapping system. In addition to the left anterior papillary muscle,the posterior papillary muscle was mapped. False tendons were found at the base of the interventricular septum, and the other end was connected to the left ventricular free wall near the apex. An irrigated touch force catheter was advanced into the left ventricle via the retrograde approach. The earliest activation site was marked at the interventricular septum attachment of the false tendons and was successfully *** This case verified that false tendons can cause premature ventricular complexes and may be cured by radiofrequency ablation guided by intracardiac echocardiography with the Carto Sound TM system.

关键词： Intracardiac echocardiography CartoSound^TM Radiofrequency catheter ablation Premature ventricular complexes False tendons Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pharmacological targeting cGAS/STING/NF-κB axis by tryptanthrin induces microglia polarization toward M2 phenotype and promotes functional recovery in a mouse model of spinal cord injury

引用

Neural Regeneration Research 2025年第11期20卷 3287-3301页

作者： Ziwei Fan Mengxian Jia Jian Zhou Zhoule Zhu Yumin Wu Xiaowu Lin Yiming Qian Jiashu Lian Xin hua Jianhong Dong Zheyu fang Yuqing Liu Sibing Chen Xiumin Xue Juanqing Yue Minyu Zhu Ying Wang Zhihui huang Honglin Teng Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Neurology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina

The M1/M2 phenotypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord *** of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be *** possesses an anti-inflammatory biological ***,its roles and the underlying molecular mechanisms in spinal cord injury remain *** this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 phenotype in *** promoted M2 polarization through inactivating the cGAS/STING/NF-κB ***,we found that targeting the cGAS/STING/NF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 phenotype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord ***,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal *** together,these results suggest that by targeting the cGAS/STING/NF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 phenotype.

关键词： cGAS/STING functional recovery microglia neuroinflammation neuroprotection nuclear factor-κB polarization spinal cord injury tryptanthrin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

单层Janus Ga_(2)SSe光催化水解性质的第一性原理研究

引用

原子与分子物理学报 2025年第3期42卷 45-51页

作者：胡新华廖杨芳贵州省贵阳市乌当区第四中学贵阳550018 贵州师范大学物理与电子科学学院贵阳550025

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层Janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层Janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层Jan... 详细信息

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层Janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层Janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层Janus Ga_(2)SSe属于间接带隙半导体,有利于降低载流子的复合几率.光催化性能分析表明,单层Janus Ga_(2)SSe的能带边缘位置适合PH=0~14宽范围的光催化水解.此外,单层Janus Ga_(2)SSe具有较高的紫外光和可见光吸收、较大的内建电场、较小的载流子有效质量保证了光生载流子有效分离并快速迁移到反应活性位点参与水的氧化还原反应.研究结果为单层Janus Ga_(2)SSe的合成及其作为水解光催化剂的潜在应用提供了有价值的理论指导.

关键词： Janus材料光催化水解第一性原理

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Stability of Imitation Dynamics with Continuously Distributed Delays

引用

Journal of Systems Science & Complexity 2023年第5期36卷 2067-2081页

作者： fang Caiya YANG Hui pi Jinxiu WU Wenjun School of Mathematics and Statistics Guizhou UniversityGuizhou 550025China Guizhou Provincial Key Laboratory for Games Decision Making and Control SystemsGuiyang 550025China

This paper investigates imitation dynamics with continuously distributed *** realistic technological,economic,and social environments,individuals are involved in strategic interactions simultaneously while the influences of their decision-making may not be observable *** shows that there exists a time delay *** distributions of delay are further considered to efficiently lucubrate the stability of interior equilibrium in the imitation dynamics with continuous distributions of delay in the two-strategy game ***,when the delay follows the uniform distributions and Gamma distributions,the authors present that interior equilibrium can be asymptotically ***,when the probability density of the delay is general density,the authors also determine a sufficient condition for stability derived from the expected *** but not least,the interested but uncomplicated Snowdrift game is utilized to demonstrate our theoretical results.

关键词： Continuous distributed delay evolutionary games imitation dynamics stability

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel method for hybrid multiple attribute decision making based on TODIM method

引用

Journal of Systems Engineering and Electronics 2015年第5期26卷 1023-1031页

作者： fang Wang hua Li School of Economics and Management Xidian University

The TODIM(an acronym in Portuguese for interactive and multiple attribute decision making) method is a valuable tool to solve the multiple attribute decision making(MADM) problems considering the behavior of the decision maker(DM), while it cannot be used to handle the problem with unknown weight information on attributes. In this paper, a novel method based on the classical TODIM method is proposed to solve the hybrid MADM problems with unknown weight information on attributes,in which attribute values are represented in four different formats:crisp numbers, interval numbers, triangular fuzzy numbers and trapezoidal fuzzy numbers. Firstly, the positive-ideal alternative and negative-ideal alternative are determined, and the gain and loss matrices are constructed by calculating the gain and loss of each alternative relatived to the ideal alternatives concerning each attribute based on different distance calculation formulas, which may avoid the information missing or information distortion in the process of unifying multiform attribute values into a certain representation form. Secondly, an optimization model based on the maximizing deviation(MD) method, by which the attribute weights can be determined, is established for the TODIM method. Further, the calculation steps to solve the hybrid MADM problems are given. Finally, two numerical examples are presented to illustrate the usefulness of the proposed method, and the results show that the DM’s psychological behavior, attribute weights and the transformed information would highly affect the ranking orders of alternatives.

关键词： hybrid multiple attribute decision making TODIM ranking

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

R-mode instability of strange stars and observations of neutron stars in LMXBs

引用

Research in Astronomy and Astrophysics 2015年第6期15卷 871-878页

作者： Chun-Mei pi Shu-hua Yang Xiao-ping Zheng Department of Physics and Engineering Hubei University of Education Institute of Astrophysics Central China Normal University

Using a realistic equation of state （EOS） of strange quark matter, namely, the modified bag model, and considering the constraints on the parameters of EOS by the observational mass limit of neutron stars, we investigate the r-mode instability window of strange stars, and find the same result as in the brief study of Haskell, Degenaar and Ho in 2012 that these instability windows are not consistent with the spin frequency and temperature observations of neutron stars in low mass X-ray binaries.

关键词： dense matter -- stars: neutron -- stars: oscillations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of Fe_2O_3/Al_2O_3 Composite Particles as Oxygen Carrier of Chemical Looping Combustion

引用

Journal of Natural Gas Chemistry 2007年第2期16卷 155-161页

作者： fang He hua Wang Yongnian Dai Faculty of Materials and Metallurgical Engineering Kunming University of Science and Technology Kunming 650093 Yunnan China Department of Chemical Engineering the University of Adelaide Adelaide 5005 South Australia

Chemical looping combustion （CLC） of carbonaceous compounds has been proposed, in the past decade, as an efficient method for CO2 capture without cost of extra energy penalties. The technique involves the use of a metal oxide as an oxygen carrier that transfers oxygen from combustion air to fuels. The combustion is carried out in a two-step process： in the fuel reactor, the fuel is oxidized by a metal oxide, and in the air reactor, the reduced metal is oxidized back to the original phase. The use of iron oxide as an oxygen carrier has been investigated in this article. Particles composed of 80 wt% Fe2O3, together with Al2O3 as binder, have been prepared by impregnation methods. X-ray diffraction （XRD） analysis reveals that Fe2O3 does not interact with the Al2O3 binder after multi-cycles. The reactivity of the oxygen carrier particles has been studied in twenty-cycle reduction-oxidation tests in a thermal gravimetrical analysis （TGA） reactor. The components in the outlet gas have been analyzed. It has been observed that about 85% of CH4 converted to CO2 and H2O during most of the reduction periods. The oxygen carrier has kept quite a high reactivity in the twenty-cycle reactions. In the first twenty reaction cycles, the reaction rates became slightly higher with the number of cyclic reactions increasing, which was confirmed by the scanning electron microscopy （SEM） test results. The SEM analysis revealed that the pore size inside the particle had been enlarged by the thermal stress during the reaction, which was favorable for diffusion of the gaseous reactants into the particles. The experimental results suggested that the Fe2O3/Al2O3 oxygen carrier was a promising candidate for a CLC system.

关键词： chemical looping combustion iron oxide oxygen carrier CO2 capture

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of convolutional neural networks to large-scale naphtha pyrolysis kinetic modeling

引用

Chinese Journal of Chemical Engineering 2018年第12期26卷 2562-2572页

作者： Feng hua Zhou fang Tong Qiu Department of Chemical Engineering Tsinghua University Beijing 100084China Beijing Key Laboratory of Industrial Big Data System and Application Beijing 100084China

System design and optimization problems require large-scale chemical kinetic models. Pure kinetic models of naphtha pyrolysis need to solve a complete set of stiff ODEs and is therefore too computational expensive. On the other hand, artificial neural networks that completely neglect the topology of the reaction networks often have poor generalization. In this paper, a framework is proposed for learning local representations from largescale chemical reaction networks. At first, the features of naphtha pyrolysis reactions are extracted by applying complex network characterization methods. The selected features are then used as inputs in convolutional architectures. Different CNN models are established and compared to optimize the neural network *** the pre-training and fine-tuning step, the ultimate CNN model reduces the computational cost of the previous kinetic model by over 300 times and predicts the yields of main products with the average error of less than 3%. The obtained results demonstrate the high efficiency of the proposed framework.

关键词： Convolutional neural network Network motif Naphtha pyrolysis Kinetic modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：