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Risk factors for post-endoscopic retrograde cholangiopancreatography(ERCP) abdominal pain in patients without post-ERCP pancreatitis

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Hepatobiliary & Pancreatic Diseases International 2022年第3期21卷 285-292页

作者： Meng-Jie Chen Ru-Hua Zheng Jun Cao yu-ling yao Lei Wang Xiao-Ping Zou Department of Gastroenterology Nanjing Drum Tower Hospital Clinical College of Nanjing Medical UniversityNanjingChina Department of Gastroenterology Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina

Background:Abdominal pain is often observed after endoscopic retrograde cholangiopancreatography(ERCP).Few studies have focused on the risk factors of post-ERCP abdominal pain without post-ERCP pancreatitis(PEP).This study aimed to identify risk factors of post-ERCP abdominal pain without PEP and investigate characteristics of the abdominal pain in non-PEP ***:Data from patients who underwent ERCP from August 2019 to January 2020 were retrospectively *** of the abdominal pain after ERCP were recorded and compared between PEP and non-PEP *** analysis was conducted to identify risk factors of non-PEP abdominal ***:A total of 1295 ERCP procedures were investigated in this study,among which 100(7.72%)patients presented post-ERCP abdominal pain without PEP and 63(4.86%)patients with *** analysis found 9 risk factors of non-PEP abdominal pain:age≤65 years[odds ratio(OR):1.971],primary ERCP(OR:2.442),dilated extrahepatic bile duct(OR:1.803),no papilla opening(OR:2.095),pancreatic guidewire passages(OR:2.258),white blood cells(WBC)≤6.0×10^(9)/L(OR:1.689),platelet(PLT)≤250×10^(9)/L(OR:2.505),serumγ-glutamyl transferase(γ-GT)≤35 U/L(OR:2.190),and albumin≥40 g/L(OR:1.762).The PEP group had later pain onset,higher pain frequency and longer hospital stay than those of the non-PEP pain group(P0.05).Conclusions:This study indicated that age≤65 years,primary ERCP,dilated extrahepatic bile duct,no papilla opening,pancreatic guidewire passages,lower WBC,lower PLT,normalγ-GT and elevated albumin were independent risk factors for post-ERCP abdominal pain without *** pain occurred earlier in non-PEP patients than in PEP patients.

关键词： Post-ERCP abdominal pain Cholangiopancreatography Endoscopic retrograde Pancreatitis Risk factor

Risk factor analysis of post-ERCP cholangitis: A single-center experience

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Hepatobiliary & Pancreatic Diseases International 2018年第1期17卷 55-58页

作者： Min Chen Lei Wang yun Wang Wei Wei yu-ling yao Ting-Sheng ling Yong-Hua Shen Xiao-Ping Zou Department of Gastroenterology The Affiliated Drum Tower Hospital of Nanjing University Medical School Department of Gastrointestinal Surgery The Second Affiliated Hospital of Nanjing Medical University

Background: Endoscopic retrograde cholangiopancreatography(ERCP) may have complications. Our study aimed to investigate the risk factors and prevention of post-ERCP ***: We retrospectively analyzed 4234 cases undergone ERCP in the Affiliated Drum Tower Hospital of Nanjing University Medical School from January 2008 to December 2013. Patient-related factors and procedure-related factors were analyzed to find the risk factors of post-ERCP cholangitis. The time point of post-ERCP cholangitis was also analyzed. Univariate and multivariate analyses were performed to define the independent risk factors of post-ERCP ***: The success rate of ERCP was 96.8%(4099/4234). The overall complication rate was 9.4%(399/4234). Post-ERCP cholangitis occurred in 102 cases(2.4%, 102/4234). The most dangerous time of post-ERCP cholangitis was from 24 h–48 h after ERCP(45.1%, 46/102). Univariate analysis revealed that age, hypertension, diabetes, previous ERCP history, biliary stent insertion, pancreatography, endoscopic sphincterotomy, balloon dilation and hilar obstruction were risk factors of post-ERCP cholangitis(P < 0.05). Multivariate analysis indicated that age, previous ERCP history and hilar obstruction were independent risk factors(P < 0.05). While endoscopic stone extraction was the potential protective ***: Many risk factors are involved in post-ERCP cholangitis. Among them, old age, previous ERCP history and hilar obstruction were independently related to this post-ERCP complication.

关键词： Cholangitis Endoscopic retrograde cholangiopancreatography Risk factors Logistic regression analysis

The influence of corneal ablation patterns on prediction error after cataract surgery in post-myopic-LASIK eyes

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Eye and Vision 2024年第4期10卷 23-31页

作者： yunqian yao jing Zhao Jifeng yu Wenwen He ling Wei Xingtao Zhou Yi Lu Xiangjia Zhu Eye Institute and Department of Ophthalmology Eye&ENT HospitalFudan University83 Fenyang RoadShanghai 200031China National Health Center Key Laboratory of Myopia(Fudan University) Key Laboratory of MyopiaChinese Academy of Medical SciencesShanghaiChina Shanghai Key Laboratory of Visual Impairment and Restoration ShanghaiChina Shanghai Research Center of Ophthalmology and Optometry ShanghaiChina Department of Ophthalmology Beijing Children's HospitalNational Center for Children's HealthCapital Medical UniversityBeijingChina State Key Laboratory of Medical Neurobiology Fudan UniversityShanghaiChina

Purpose:To evaluate the influence of corneal ablation patterns on the prediction error after cataract surgery in postmyopic-LASIK ***:Eighty-three post-myopic-LASIK eyes of 83 patients that underwent uneventful cataract surgery were retrospectively *** postoperative spherical equivalence(SE)was calculated for the implanted lens using the Haigis-L and Barrett True-K *** error at one month postsurgery was calculated as actual SE minus predicted *** each eye,area and decentration of the ablation zone was measured using the tangential curvature *** associations between prediction errors and corneal ablation patterns were ***:The mean prediction error was-0.83±1.00 D with the Haigis-L formula and-1.00±0.99 D with the Barrett True-K *** error was positively correlated with keratometry(K)value and negatively correlated with ablation zone area using either formula,and negatively correlated with decentration of the ablation zone using the Barrett True-K formula(all P<0.05).In the K<37.08 D group,prediction error was negatively correlated with decentration of the ablation zone with both formulas(all P<0.05).Multivariate analysis showed that with the Haigis-L formula,prediction error was associated with axial length(AL),K value and decentration,and with the Barrett True-K formula,prediction error was associated with AL and decentration(all P<0.05).Conclusion:A flatter cornea,larger corneal ablation zone and greater decentration will lead to more myopic prediction error after cataract surgery in post-myopic-LASIK eyes.

关键词： Cataract surgery Laser in situ keratomileusis Intraocular lens power Keratometry Ablation zone decentration Ablation zone size

Multi-Robot Cooperative Localization: Time-Varying Unobservable Subspace Analysis and Consistent Algorithm Design

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Journal of Systems Science & Complexity 2024年第5期37卷 1937-1955页

作者： HAO Ning HE Fenghua yao yu School of Astronautics Harbin Institute of Technology

This paper investigates the problem of cooperative localization(CL) for a multi-robot system(MRS) under dynamic measurement topology, which involves a group of robots collectively estimating their poses with respect to a common reference frame using ego-motion measurements and robot-to-robot relative measurements. The authors provide a theoretical analysis of the time-varying unobservable subspace and propose a consistent cooperative localization algorithm. First, the authors introduce the relative measurement graph(RMG) to represent the relative pose measurements obtained by the MRS at each instant. Then, the authors derive the local observability matrix over a time *** equivalent relationship is established between the local observability matrix and the spectral matrices of the RMG. Moreover, the authors present a method for constructing the unobservable subspace based on the RMG under different topology conditions. Based on this analysis, the authors design a consistent cooperative localization algorithm that satisfies the constraints of the time-varying unobservable subspace. An analytical optimal solution is derived for the constrained optimization *** Carlo numerical simulations are conducted to demonstrate the consistency and accuracy of the proposed method.

关键词： Consistency cooperative localization multi-robot system null space relative measurement graph time-varying unobservable subspace

Facilitating prelithiation of silicon carbon anode by localized high-concentration electrolyte for high-rate and long-cycle lithium storage

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Carbon Energy 2024年第6期6卷 216-233页

作者： yuanxing Zhang Borong Wu Jiaying Bi Xinyu Zhang Daobin Mu Xin-yu Zhang ling Zhang yao Xiao Feng Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijingChina Chongqing Innovation Center Beijing Institute of TechnologyChongqingChina College of New Energy Xi′an Shiyou UniversityXi′anChina Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjinChina

The commercialization of silicon-based anodes is affected by their low initial Coulombic efficiency(ICE)and capacity decay,which are attributed to the formation of an unstable solid electrolyte interface(SEI)***,a feasible and cost-effective prelithiation method under a localized highconcentration electrolyte system(LHCE)for the silicon-silica/graphite(Si-SiO_(2)/C@G)anode is designed for stabilizing the SEI layer and enhancing the *** thin SiO_(2)/C layers with-NH_(2) groups covered on nano-Si surfaces are demonstrated to be beneficial to the prelithiation process by density functional theory calculations and electrochemical *** SEI formed under LHCE is proven to be rich in ionic conductivity,inorganic substances,and flexible organic ***,faster Li+transportation across the SEI further enhances the prelithiation effect and the rate performance of Si-SiO_(2)/C@G *** also leads to uniform decomposition and high stability of the SEI with abundant organic *** a result,the prepared anode shows a high reversible specific capacity of 937.5 mAh g^(-1)after 400 cycles at a current density of 1 *** 811‖Li-SSGLHCE full cell achieves a high-capacity retention of 126.15 mAh g^(-1)at 1 C over 750 cycles with 84.82%ICE,indicating the great value of this strategy for Si-based anodes in large-scale applications.

关键词： localized high-concentration electrolytes prelithiation SEI layer silicon anode

Event-Triggered Bipartite Consensus Tracking and Vibration Control of Flexible Timoshenko Manipulators Under Time-Varying Actuator Faults

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1190-1201页

作者： Xiangqian yao Hao Sun Zhijia Zhao yu Liu School of Automation Science and Engineering South China University of TechnologyGuangzhou 510640China Yongjiang Laboratory Ningbo 315202 School of Astronautics Harbin Institute of TechnologyHarbin 150001China School of Mechanical and Electrical Engineering Guangzhou UniversityGuangzhou 510006China

For bipartite angle consensus tracking and vibration suppression of multiple Timoshenko manipulator systems with time-varying actuator faults,parameter and modeling uncertainties,and unknown disturbances,a novel distributed boundary event-triggered control strategy is proposed in this *** contrast to the earlier findings,time-varying consensus tracking and actuator defects are taken into account *** addition,the constructed event-triggered control mechanism can achieve a more flexible design because it is not required to satisfy the input-to-state *** achieve the control objectives,some new integral control variables are given by using back-stepping technique and boundary ***,adaptive neural networks are applied to estimate system *** the proposed event-triggered scheme,control inputs can reduce unnecessary ***,tracking errors and vibration states of the closed-looped network can be exponentially convergent into some small fields,and Zeno behaviors can be *** last,some simulation examples are given to state the effectiveness of the control algorithms.

关键词： Vibration satisfy bipartite

Investigating effect of coke porosity on blast furnace performance based on multi-physical fields

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Journal of Iron and Steel Research International 2024年第2期31卷 357-367页

作者： Ji Chen Zhao Lei Zhe yao Li Wang Qiang ling Ping Cui Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization School of Chemistry and Chemical EngineeringAnhui University of TechnologyMa’anshan243002AnhuiChina Shanxi Academy of Printing Technology Research Institute Co. Ltd.Xi’an710077ShaanxiChina

Reducing coke use is an effective measure to reduce carbon emission and energy consumption in the blast furnace(BF)***,BF is a high-temperature moving bed reactor,where complex physical transformations coupled with complicated reactions *** makes it challenging to investigate the factors determining BF performance with the conventional method.A multi-physical field coupling mathematical model of BF was thus developed to describe its mass and heat transfer as well as its intrinsic ***,the proposed model was validated with the production *** coupling conditions,influences of dominating reactions on BF performance(temperature distribution,gas distribution,iron formation reaction,and direct reduction degree)were *** results indicated that coke combustion,indirect reduction,and direct reduction of iron ore mainly took place nearby the shaft tuyere,cohesive zone,and dripping zone,***,the rate of coke solution loss reaction was increased with the rising coke porosity in the cohesive *** the effect of coke porosity on the efficiency and stability of BF,the coke porosity of 0.42 was regarded as a reasonable value.

关键词： Blast furnace Mathematical model Multi-physical field Simulation Coke porosity

A Strong,Tough,and Self-Healing Strengthening Thioctic Acid-based Elastomer for Highly Reliable Flexible Strain Sensor

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Chinese Journal of Polymer Science 2024年第10期42卷 1610-1618,I0016页

作者： Xin-yu Chen yu-Bing Fu Xue-ling Yan Lan Liu School of Materials Science and Engineering Key Lab of Guangdong Province for High Property and Functional Polymer MaterialsSouth China University of TechnologyGuangzhou510641China

Elastomers with high strength and toughness,excellent self-healing properties,and biocompatibility have broad application prospects in wearable electronics and other fields,but preparing it remains a *** this work,we propose a highly adaptable strategy by introducing the small molecule crosslinking agent of triethanolamine(TEA)to the poly(thioctic acid)(PTA)chains and preparing the PAx Ey elastomers using a simple synthesis *** strategy stabilizes the PTA chains by constructing multiple non-covalent cross-linked dynamic networks,endowing materials with excellent strength and toughness(tensile strength of 288 kPa,toughness of 278.2 kJ/m3),admirable self-healing properties(self-healing efficiency of 121.6%within 7 h at 70℃),and good *** PAx Ey elastomers can also be combined with MWNTs to become flexible strain sensors,which can be used to monitor human joint movements with high sensitivity,repeatable responses,and stability.

关键词： Thioctic acid Ion clusters Multiple dynamic networks Self-healing strengthening Flexible strain sensor

Narrative review of latest research progress about robotic percutaneous coronary intervention

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Journal of Geriatric Cardiology 2024年第8期21卷 816-825页

作者： Zhen-yu LIU Guang-yao ZHAI Department of Clinical Medicine Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Cardiology Beijing Luhe HospitalCapital Medical UniversityBeijingChina

Robotic percutaneous coronary intervention(R-PCI)is a novel technology in which operators can manipulate guidewires and catheter devices in interventional *** approach provides great benefits to interventional cardiologists in terms of reducing both radiation exposure and orthopedic *** large,high-quality cohort studies have confirmed the short-term safety and high technical success rate of ***,randomized long-term data are still needed before adopting them as part of standard coronary ***,tele-stenting for complex coronary lesions has significant potential for *** need to overcome the present relevant challenges for its application such as inherent delays,bedside care for unstable patients from R-PCIs to manual PCIs(M-PCIs),incompatibility for a thrombus aspiration catheter and heavily calcified *** is a great future in laboratory workflow teams,3D-printed anatomical models and multiple joint collaborative control *** narrative review summarizes the latest developments in R-PCI,with a focus on developments in robotic technology,and discusses the current and future potential use of R-PCI in clinical practice globally.

关键词： coronary injuries unstable