CIRCUMFERENTIAL

作品数：125被引量：300H指数：9
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Stricture prevention after circumferential endoscopic submucosal dissection of the esophagus:Proactive vs reactive strategies
《World Journal of Gastrointestinal Endoscopy》2025年第3期5-11,共7页Giulio Calabrese Sandro Sferrazza Daryl Ramai Marcello Maida 
In this editorial,we explored currently available strategies for reducing the occurrence of esophageal strictures following circumferential endoscopic submucosal dissection.This manuscript provided a comprehensive ove...
关键词：Endoscopic submucosal dissection ESOPHAGUS CIRCUMFERENTIAL STENOSIS STRICTURE 
Factors influencing esophageal stenosis after endoscopic radiofrequency ablation for total or near total circumferential early esophageal cancer and precancerous lesions:a case-control study
《China Medical Abstracts(Internal Medicine)》2024年第4期218-218,共1页DING Yuan 
Objective To investigate the factors influencing the occurrence of esophageal stenosis after endoscopic radiofrequency ablation(RFA)for total or near total circumferential early esophageal cancer and precancerous lesi...
关键词：LESIONS ENDOSCOPIC AFTER 
Impact of circumferential inlet distortion on different types of stall inceptions in a transonic compressor
《Chinese Journal of Aeronautics》2024年第11期107-117,共11页Tianyu PAN Jiandong YAN Hanan LU Qiushi LI 
support of the National Natural Science Foundation of China(Nos.52322603,51976005,52006002,and 51906005);the Science Center for Gas Turbine Project,China(No.P2022-B-II-004-001);the Advanced Jet Propulsion Creativity Center,AEAC,China(No.HKCX2020-02-013);the National Science and Technology Major Project,China(No.2017-Ⅱ-0005-0018);the Fundamental Research Funds for the Central Universities,China(No.501XTCX2023146001);the Beijing Nova Program,China(No.20220484074);the Beijing Municipal Natural Science Foundation,China(No.3242016);the Collaborative Innovation Center for Advanced Aero-Engines,China。
The application of higher bypass ratios and lower pressure ratios significantly reduces specific fuel consumption with the development of turbofan engines.However,it also increases the risk of flow separation at the i...
关键词：Partial surge Circumferential inlet distortion Transonic compressor Stall triggering event Loading distribution 
Aerodynamics of a Tandem-Bladed Axial Compressor Rotor under Circumferential Distortion at Different Rotational Speeds
《Journal of Thermal Science》2024年第4期1340-1356,共17页Amit KUMAR Jerry T.JOHN A.M.PRADEEP R.A.DAKKERMANS Dragan KOZULOVIC 
For most aircraft engines,inflow distortion is inevitable.Inflow distortion is known to degrade the aerodynamic performance and stable operating limits of a compressor.Tandem rotor configuration is an arrangement that...
关键词：tandem rotor circumferential distortion loss tip leakage vortex vortex breakdown diffusion factor aerodynamics of compressor blade 
Underwater four-quadrant dual-beam circumferential scanning laser fuze using nonlinear adaptive backscatter filter based on pauseable SAF-LMS algorithm被引量：2
《Defence Technology（防务技术）》2024年第7期1-13,共13页Guangbo Xu Bingting Zha Hailu Yuan Zhen Zheng He Zhang 
supported by the 2021 Open Project Fund of Science and Technology on Electromechanical Dynamic Control Laboratory,grant number 212-C-J-F-QT-2022-0020;China Postdoctoral Science Foundation,grant number 2021M701713;Postgraduate Research&Practice Innovation Program of Jiangsu Province,grant number KYCX23_0511;the Jiangsu Funding Program for Excellent Postdoctoral Talent,grant number 20220ZB245。
The phenomenon of a target echo peak overlapping with the backscattered echo peak significantly undermines the detection range and precision of underwater laser fuzes.To overcome this issue,we propose a four-quadrant ...
关键词：Laser fuze Underwater laser detection Backscatter adaptive filter Spline least mean square algorithm Nonlinear filtering algorithm 
Experimental study on performance of spring damping support structure system for large deformation tunnel in soft rock
《Underground Space》2024年第2期221-243,共23页Jinfeng Xu Xiongyao Xie Zhou Shi Wuqiang Cai Dinglun Xu Chen Xu 
supported by the National Nature Science Funds of China(Grant Nos.52038008,and 42207176);the Science and Technology Project of the Department of Transport of Yunnan Province China(Yunnan Transportation Science and Education[2021]No.7);Ningbo Natural Science Funds(Grant No.2022J116).The authors gratefully acknowledge their financial support.
According to the convergence confinement theory,it is an effective measure to control the large deformation of high ground stress in fractured soft rock tunnels by using yielding support.The yielding support can be cl...
关键词：Soft rock Highway tunnel Convergence confinement method Circumferential yielding support with spring damping element Numerical calculations Field test 
Optimizing circumferential assembly angle of rotor parts connected by curvic couplings based on acquired tooth surface error data
《Chinese Journal of Aeronautics》2024年第3期404-416,共13页Huibin SUN Meng LIU Yingzhi ZHANG Chenle WEI 
co-supported by the National Basic Research Project(Nos.J2022-VII-0001-0043 and 2017-VII-0010-0104);the Fundamental Research Funds for the Central Universities,and the National Natural Science Foundation of China(No.72231008)。
Due to the excellent self-centering and load-carrying capability,curvic couplings have been widely used in advanced aero-engine rotors.However,curvic tooth surface errors lead to poor assembly precision.Traditional ph...
关键词：Curvic couplings Tooth surface error Assembly precision Axial and radial runouts Circumferential assembly angle 
Experimental study on the compression-shear performance of a new-type circumferential joint of shield tunnel
《Underground Space》2024年第1期138-155,共18页Ziyang Zhou Kun Feng Yiteng Liu Bohan Wu Chunfang Lu Gang Lin Chuan He 
supports of the National Key R&D Program of China(Grant No.2021YFB2600900);National Natural Science Foundation of China(Grant No.52078430);Yunnan Provincial Science and Technology Department of China(Grant No.202002AF080003).
To investigate the compression-shear behavior of a new circumferential joint based on the sleeve-straight bolt combination type connection of large-diameter shield tunnels,a series of full-scale joint experiments was ...
关键词：Shield tunnel New type of connector Shear resistance Full-scale experiment Circumferential joint 
Numerical investigation and modeling of sweep effects on inlet flow field of axial compressor cascades被引量：1
《Chinese Journal of Aeronautics》2024年第2期296-308,共13页Jiancheng ZHANG Donghai JIN Xingmin GUI 
supported by the National Natural Science Foundation of China(No.52376021)。
Swept blades are widely utilized in transonic compressors/fans and provide high load,high through-flow,high efficiency,and adequate stall margin.However,there is limited quantitative research on the mechanism of the e...
关键词：TURBOMACHINERY Sweep aerodynamics Quasi-3D method Incidence angle Circumferential fluctuation Machine learning 
Medical Economic Consequences,Predictors,and Outcomes of Immediate Atrial Fibrillation Recurrence after Radiofrequency Ablation
《Cardiovascular Innovations and Applications》2024年第1期472-483,共12页Xuan Zhang Yuxiao Chen Lian Lou Wen Shi Haijun Li Zhihang Li Mengjie Hu Lefeng Wang Yun Mou Shenjiang Hu Jian Yang 
supported by the China Postdoctoral Science Foundation(2021M702833 and 2022M712764);the National Natural Science Foundation of China(82070409);the Research Fund of Health Agency of Zhejiang Province(2023RC163).
Background and aims:Immediate recurrence(Im-Recurr),a type of atrial fibrillation(AF)recurrence occurring during the blanking period after radiofrequency catheter ablation(RFCA),has received little attention.Therefore...
关键词：atrial fibrillation radiofrequency catheter ablation immediate recurrence circumferential pulmonary vein isolation electric cardioversion 
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