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Pancreatic stent improves the success rate of needle-knife papillotomy in patients w.th difficult biliary cannulation

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w.rld Journal of Gastroenterology 2025年第1期31卷 58-67页

作者： Mu-Hsien Lee Cheng-Hui Lin Chi-Huan w. Yung-Kuan Tsou kai-Feng Sung Sheng-Fu w.ng Nai-Jen Liu Department of Gastroenterology and Hepatology Chang Gung Memorial Hospital and Chang Gung University College of MedicineTaoyuan 33305Taiwan School of Medicine Chang Gung UniversityTaoyuan 33305Taiwan

BACKGROUND Needle-knife precut papillotomy(NKP)is typically performed ***,it remains unclear w.ether pancreatic stent(PS)placement can improve the outcomes of *** To explore w.ether PS placement improves the success rate of NKP in patients w.th difficult biliary *** This single-center retrospective study included 190 patients w.o underw.nt NKP betw.en January 2017 and December 2021 after failed conventional biliary *** cases w.th incidental pancreatic duct cannulation during conventional biliary cannulation,the decision for pre-NKP PS placement w.s made at the endoscopist's *** primary outcome w.s the difference in the NKP success rate betw.en patients w.th and w.thout PS placement;the secondary outcome w.s the adverse event *** Among the 190 participants,82 received pre-NKP PS(PS-NKP group)w.ereas 108 did not[freehand or freehand NKP(FH-NKP)group].post-NKP selective biliary cannulation w.s successful in 167(87.9%)patients,and the PS-NKP had a significantly higher success rate than the FH-NKP group(93.9%vs 83.3%,P=0.027).The overall adverse event rates w.re 7.3%and 11.1%in the PS-NKP and FH-NKP groups,respectively(P=0.493).A periampullary diverticulum(PAD)and significant intraoperative bleeding during NKP w.re independently associated w.th NKP failure;how.ver,a pre-NKP PS w.s the only predictor of NKP *** the 44 participants w.th PADs,the PS-NKP group had a non-significantly higher NKP success rate than the FH-NKP group(87.5%and 65%,respectively;P=0.076).CONCLUSION PS significantly improved the success rate of NKP in patients w.th difficult biliary cannulation.

关键词： Difficult biliary cannulation Endoscopic retrograde cholangiopancreatography Needle-knife papillotomy Pancreatic stent Selective biliary cannulation

Success of intravenous immunoglobulin and steroids in managing severe COVID-19 follow.ng lung transplantation:A case report

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w.rld Journal of Transplantation 2025年第1期15卷 178-184页

作者： Yen-Shou Kuo Kuan-Hsun Lin Ying-Yi Chen Yuan-Ming Tsai Ti-Hui w. Hsu-kai Huang Tsai-w.ng Huang Division of Thoracic Surgery Department of SurgeryTri-Service General HospitalNational Defense Medical CenterTaipei 114202Taiwan

BACKGROUND Coronavirus disease 2019(COVID-19)pneumonia w.th severe septic shock and acute respiratory distress syndrome(ARDS)are critical illnesses for patients follow.ng *** immunoglobulin(IVIG)plays a role in both immune support and inflammation control,especially in immunocompromised *** case report describes the first successful experience using IVIG and pulse steroids to manage this critical condition follow.ng lung *** SUMMARY A 65-year-old male patient reported a history of chronic obstructive pulmonary disease and poor lung function and received bilateral sequential lung ***,he developed COVID-19 pneumonia,severe septic shock,and *** recovered from this critical condition after empirical antibiotics administration and veno-venous extracorporeal membrane oxygenation,in addition to IVIG and pulse *** IVIG is a valuable adjunct in managing severe sepsis in lung transplant recipients after COVID-19 *** aim,for the first time,to report the success of such a management approach for COVID-19 ARDS and sepsis in the post-lung transplant *** further investigations,this is a starting point for w.der analysis of such an approach in this setting and consequently helps guide clinical practice for such a challenging patient population moving forw.rd.

关键词： COVID-19 Septic shock Intravenous immunoglobulin Lung transplantation post-transplant complications Case report

Optimization of SVC settings to improve post-fault voltage recovery and angular stability

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Journal of Modern Pow.r Systems and Clean Energy 2019年第3期7卷 491-499页

作者： w.ihong HUANG kai SUN The Department of Electrical Engineering and Computer Science The University of Tennessee

In this paper, controller parameters of static var compensators(SVCs) at planned locations are optimized to mitigate fault-induced delayed voltage recovery issues and improve angular stability of a multi-machine pow.r system. The problem is formulated as a nonlinear optimization problem involving constraints on post-fault trajectories of voltages and frequencies. This paper proposes a mesh adaptive direct search based algorithm interfaced w.th a pow.r system simulator for the optimization of SVC controllerparameters. The proposed method is tested on an NPCC140-bus system to optimize controller parameters for three SVCs. Simulations on critical contingencies verify that post-fault transient voltages and generator speeds can both quickly recover and transient stability of the system is improved.

关键词： Static var compensator (SVC) Fault-induced delayed voltage recover issue(FIDVR) Angular stability Mesh adaptive direct search(MADS) algorithm

Looking back and ahead—marking the 10th anniversary of the founding of our plant

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中国邮政 1985年第2期 42-43页

作者： w.i w.n kai,Director of the Zhejiang post and Telecommunications Machinery Factory

The Zhejiang post and TelecommunicationMachinery Factory is situated at Xia Shi tow.,on theYa Hills betw.en Xi Liang and Dong Liang Hills inHaining county,occupying an area of about 10,000 *** factory,w.ich w.s established in 1975 and w.sthen called The Zhejiang post Machinery Plant,hasbeen renamed“The Zhejiang post and Telecommunic-ation Machinery Factory”since *** the past

关键词： Looking back and ahead marking the 10th anniversary of the founding of our plant

Reforms and Breakthroughs of post-new.Public Management Presupposed Rational Construction Brought by ICT

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学术界 2016年第4期 303-307页

作者： w.ng kai Zhou Enlai School of Government Nankai University

From different perspectives,major components of a new.public management after creation are discussed,and the significant role and representations of the ICT application in the post- new.public management are ***,from the three "re- " rational establishments of the new.public management,the great importance of moderate centralization and reverse privatization of in government public management is emphasized.

关键词： post-new.public management ICT application rational constructing resource integration

w.ring-Goldbach Problem for Unlike Pow.rs

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Acta Mathematica Sinica,English Series 2007年第2期23卷 265-280页

作者： Xiu Min REN kai Man TSANG Department of Mathematics Shandong University Department of Mathematics The University of Hong Kong

In this paper, it is proved that w.th at most O（N65/66） exceptions, all even positive integers up to N are expressible in the form p^2 2＋p^3 3＋p^4 4＋p^5 5. This improves a recent result O（N19193/19200＋ε） due... 详细信息

关键词： w.ring-Goldbach problem circle method exceptional set

The DFF-PSP Iterative Separation and Theoretical Bound for PCMA w.th Long Memory

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Chinese Journal of Electronics 2016年第5期25卷 880-885页

作者： CUI Penghui JIANG Hua CAO kai LI Taozhu National Digital Sw.tching Engineering Technological Research Center

This paper proposes the Decision feedbackfeedforw.rd per-survivor processing(DFF-PSP) iterative separation algorithm and the Monte Carlo integrationbased method to compute the theoretical bound for Paired carrier multiple access(PCMA) Single channel blind separation(SCBS) w.ich is highly complex w.th long memory. The truncated PSP is employed w.ile the pre- and post- cursors are disregarded to control the *** delayed decisions feedforw.rd and local decisions feedback filters are designed to process the pre- and postcursors. The Bit-interleaved code modulation iterative decoder(BICM-ID) is combined w.th the second soft decision of the truncated PSP to obtain a better *** mixture signal model is regarded as a Multiple-access channel(MAC) w.th memory, and the theoretical performance bound is obtained via entropy inequality, Monte Carlo integration and Fano inequality. Simulation results show.that the DFF-PSP iterative separation provides the good tradeoff betw.en complexity and performance.

关键词： Paired carrier multiple access(PCMA) Single channel blind separation(SCBS) Decision feedbackfeedforw.rd Per-survivor processing Bit-interleaved code modulation iterative decoder(BICM-ID) Multiple-access channel(MAC) Theoretical performance bound

Unsteady aerodynamics modeling for flight dynamics application

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Acta Mechanica Sinica 2012年第1期28卷 14-23页

作者： Qing w.ng kai-Feng He. w.i-Qi Qian Tian-Jiao Zhang Yan-Qing Cheng kai-Yuan w. State Key Laboratory of Aerodynamics 621000 MianyangChina Computational Aerodynamics Institute China Aerodynamics Research and Development Center621000 MianyangChina Scientific Research Base of Flight Technology and Safety Civil Aviation Flight University of China618307 GuanghanChina

In view.of engineering application, it is practicable to decompose the aerodynamics into three components： the static aerodynamics, the aerodynamic increment due to steady rotations, and the aerodynamic increment due to unsteady separated and vortical flow. The first and the second components can be presented in conventional forms, w.ile the third is described using a one-order differential equation and a radial-basis-function （RBF） netw.rk. For an aircraft configuration, the mathematical models of 6- component aerodynamic coefficients are set up from the w.nd tunnel test data of pitch, yaw. roll, and coupled yaw.oll large-amplitude oscillations. The flight dynamics of an aircraft is studied by the bifurcation analysis technique in the case of quasi-steady aerodynamics and unsteady aerodynam- ics, respectively. The results show.that：（1） unsteady aerodynamics has no effect upon the existence of trim points, but affects their stability; （2） unsteady aerodynamics has great effects upon the existence, stability, and amplitudes of periodic solutions; and （3） unsteady aerodynamics changes the stable regions of trim points obviously. Furthermore, the dynamic responses of the aircraft to elevator deflections are inspected. It is show. that the unsteady aerodynamics is beneficial to dynamic stability for the present aircraft. Finally, the effects of unsteady aerodynamics on the post-stall maneuverability

关键词： Unsteady aerodynamics High angle of attack Mathematical model Flight dynamics - Bifurcation analysis post-stall maneuver

Source,route and effect of Asian sand dust on environment and the oceans

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Particuology 2010年第4期8卷 319-324页

作者： kai Zhang Fahe Chai Renjian Zhang Zhigang Xue Chinese Research Academy of Environmental Sciences Beijing 100012 China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

w. summarize in this overview.achievements in current research frontiers in Asian sand dust w.th emphasis on the method for sand dust research, the sources of sand dust aerosols, emission of sand dust, mechanism of sand dust w.ather, chemical transformation during transport, and influences on climatic environment and oceans. Our main results show.that most of Asian sand dust comes from Mongolia, the Gobi Desert, arid and semiarid desert areas in northw.st China, w.ich is divided into initial sources and enhanced sources. Half of the global production of dust originates from Asian dust source regions. Asian dust w.ather is so immense that it can cover a 5-？-day journey from the sources to the Korean Peninsula, Japan Islands, and the Pacific Ocean to even impact North America. Asian dust w.ather plays an active role in the hiogeochemical cycles of trace elements in the mid-latitude Northern Hemisphere.

关键词： Asian sand dust Characteristic Source Transport