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AHLNet:Adaptive Multihead Structure and Lightweight Feature Pyramid Network for Detection of Live Working in Substations

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Machine Intelligence Research 2024年第5期21卷 983-992页

作者： Mengle Peng Xiaoyong Jiang Langyue Huang Zhongyi Li Haiteng Wu xiaotang geng Zhejiang University of Science and Technology Hangzhou310023China Zhejiang Key Laboratory of Intelligent Operation and Maintenance Robot Hangzhou311100China

With the increasing demand for power in society,there is much live equipment in substations,and the safety and standardization of live working of workers are facing *** at these problems of scene complexity and object diversity in the real-time detection of the live working safety of substation workers,an adaptive multihead structure and lightweight feature pyramid-based network(AHLNet)is proposed in this study,which is based on ***,we take AH-Darknet53 as the backbone network of YOLOV3,which can introduce an adaptive multihead(AMH)structure,reduce the number of network parameters,and improve the feature extraction ability of the backbone ***,to reduce the number of convolution layers of the deeper feature map,a lightweight feature pyramid network(LFPN)is proposed,which can perform feature fusion in advance to alleviate the problem of feature imbalance and gradient ***,the proposed AHLNet is evaluated on the datasets of 16 categories of substation safety operation scenarios,and the average prediction accuracy MAP_(50)reaches 82.10%.Compared with YOLOV3,MAP_(50)is increased by 2.43%,and the number of parameters is 90 M,which is only 38%of the number of parameters of *** addition,the detection speed is basically the same as that of YOLOV3,which can meet the real-time and accurate detection requirements for the safe operation of substation staff.

关键词： Adaptive multihead structure lightweight feature pyramid substation feature imbalance multiobject detection

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Effectiveness and Safety of Transcatheter Closure of Various Ventricular Septal Defects Using Second-Generation Amplatzer Duct Occluders

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Congenital Heart Disease 2023年第2期18卷 183-195页

作者： Jianming Wang Qiguang Wang xiaotang Sheng Jingsong geng Jiawang Xiao Xianyang Zhu Department of Congenital Heart Disease General Hospital of Northern Theater CommandShenyangChina

Objective:This study was designed to determine the long-term safety and efficacy of using the Amplatzer Duct Occluder II(ADO II)for the closure of various ventricular septal defects(VSDs).Methods:From January 2011 to December 2019,selected VSD patients were treated through transcatheter intervention using ADO II *** closure results and complications from 188 patients,involving 167 perimembranous ventricular septal defects(pmVSDs),9 intracristal VSDs,11 post surgery residual shunts and 1 post closure residual shunt with the mean outlet diameter3.1±0.8 mm under angiography,were enrolled in this ***:The success rate was 98.9%for all *** the median 77-month follow-up period,no cases of complete atrioventricular block(cAVB),infective endocarditis or death *** major adverse event(0.5%)was recorded:cerebrovascular accident occurred 1 day after the procedure in one patient who was transferred to the neurology *** residual shunt rate was 44.6%,which was the most common minor adverse *** cardiac conduction block rate was 4.3%.Specifically,one pmVSD patient developed intermittent LBBB during the 28-month *** were 3 patients(1.6%)with new-onset mild tricuspid insufficiency,and the insufficiency degree was stable during *** was no new-onset aortic insufficiency that ***:Transcatheter closure of pmVSDs,some intracristal VSDs,some postsurgery or postclosure residual shunts using ADO II occluders were both safe and effective and yielded excellent long-term results in selected patients.

关键词： Ventricular septal defects Amplatzer Duct Occluder II long-term follow-up transcatheter closure

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Simultaneous Transcatheter Closure of the Left Atrial Appendage and Congenital Interatrial Communication Closure

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Congenital Heart Disease 2022年第1期17卷 61-70页

作者： Jianming Wang Xianyang Zhu xiaotang Sheng Jingsong geng Jiawang Xiao Qiguang Wang Department of Congenital Heart Disease General Hospital of Northern Theater CommandShenyangChina

Background:Left atrial appendage closure(LAAC)with simultaneous interventional occlusion therapy for congenital interatrial communication has become a new focus of patients with nonvalvular atrial *** is known about the results of mid-and long-term ***:The aim of this study was to evaluate the midand long-term safety and effectiveness of simultaneous transcatheter closure of the left atrial appendage(LAA)and congenital interatrial communication closure in atrial fibrillation(AF)***:From Jan 2016 to June 2017,27 patients with AF were treated with simultaneous transcatheter closure of the LAA and atrial septal defect(ASD,n=22),patent foramen ovale(PFO,n=5).Results:The perioperative closure success rate was 96.3%,except for cardiac tamponade occurred in one ASD *** the median 37.6-month follow-up period,no cases of cerebrovascular or peripheral vascular embolism,bleeding,infective endocarditis or thrombosis along the occluders were *** the 21 patients with NYHA Class III,nineteen had significant improvements to NYHA Classes I or II,and 81.5%of patients were free from major or minor adverse events during midand long-term ***:Simultaneous closure of the LAA and congenital interatrial communication closure is a viable option for patients with nonvalvular atrial fibrillation who are at risk of stroke or systemic embolism,and it is effective and yields excellent mid-and long-term results.

关键词： Left atrial appendage atrial fibrillation interatrial communication cardiac catheterization

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Effects of Parameters in Femtosecond Laser Micromachining on Ablation of Silicon

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Transactions of Tianjin University 2009年第3期15卷 225-228页

作者：陈治傅星耿娜胡小唐 State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University

A series of ablation experiments on silicon surface by femtosecond laser system of 775 nm and 150 fs duration pulses were carried *** morphological characteristics and the associated effect in the ablation were tested by atomic force microscope(AFM),scanning electron microscope(SEM),focused ion beam(FIB),and the optic *** single pulse threshold can be obtained *** the multiple pulses,the ablation threshold varies with the number of pulses applied to the surface due to the incubation *** analyzing the experimental data,the thresholds of laser fluences under various laser pulse numbers were obtained,and the relationships between ablation area and laser energy and laser pulse number were ***,the periodic ripple structure on silicon surface was *** the condition of certain laser power,the number of laser pulse can influence the formation of ripples.

关键词： femtosecond pulse laser microstructure machining silicon ablation threshold incubation effect

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右心声学造影结合经食管超声心动图在房间隔卵圆孔未闭中的应用

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中国医学影像学杂志 2020年第12期28卷 938-941页

作者：庚靖淞朱鲜阳王琦光盛晓棠王思晨肖家旺北部战区总医院先心病内科辽宁沈阳110016

目的探讨右心声学造影(cTTE)结合经食管超声心动图(TEE)在房间隔卵圆孔未闭(PFO)中的应用。资料与方法纳入因偏头痛或不明原因脑卒中合并PFO患者88例,行cTTE检查,检查阳性者进一步行TEE检查,明确PFO的直径、隧道长度及原发隔活动度。结... 详细信息

目的探讨右心声学造影(cTTE)结合经食管超声心动图(TEE)在房间隔卵圆孔未闭(PFO)中的应用。资料与方法纳入因偏头痛或不明原因脑卒中合并PFO患者88例,行cTTE检查,检查阳性者进一步行TEE检查,明确PFO的直径、隧道长度及原发隔活动度。结果TEE检测阳性85例,阴性3例。cTTE与TEE对PFO的诊断敏感度差异无统计学意义[100%(88/88)比96.59%(85/88),P=0.081]。cTTE显示右向左分流Ⅰ级6例,Ⅱ级20例,Ⅲ级62例。TEE所测PFO的大小、长度、原发隔活动度与cTTE检测的分流等级呈正相关(r=0.570、0.229、0.508,P均<0.05)。结论cTTE联合TEE可明确PFO解剖形态与分流等级的关系,判断因PFO形态引起偏头痛或不明原因脑卒中发生的影像学因素,为临床介入治疗提供理论依据。

关键词：超声心动描记术超声心动描记术,经食管造影剂卵圆孔,未闭

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无痛与常规经食管超声在房间隔缺损检查中的有效性及安全性

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中国医学影像学杂志 2023年第6期31卷 587-591页

作者：庚靖淞王琦光王思晨王建铭王忠超孟立立盛晓棠肖家旺北部战区总医院先心病内科辽宁沈阳110016

目的比较无痛与常规经食管超声心动图(TEE)在房间隔缺损检查中的有效性及安全性。资料与方法回顾性分析2020年8月—2021年7月于北部战区总医院先心病内科诊断为房间隔缺损并进行TEE检查的168例患者,其中无痛TEE 97例,常规TEE 71例,比较... 详细信息

目的比较无痛与常规经食管超声心动图(TEE)在房间隔缺损检查中的有效性及安全性。资料与方法回顾性分析2020年8月—2021年7月于北部战区总医院先心病内科诊断为房间隔缺损并进行TEE检查的168例患者,其中无痛TEE 97例,常规TEE 71例,比较两组患者检查前、中、后血压、心率、血氧饱和度、检查时间、一次性插管成功率、并发症及患者舒适度疼痛评分量表。结果①无痛TEE组检查中、后收缩期血压、舒张期血压、心率均低于检查前(t=12.037、9.992、15.980、15.439、7.145、11.579,P0.05)。②两组检查前血压差异无统计学意义(P>0.05);无痛TEE组检查中、后收缩期及舒张期血压均低于常规TEE组(t=−7.955、−6.792、−10.942、−10.875,P均0.05)。③无痛TEE组检查时间较常规TEE组长[(11.3±2.2)min比(5.2±1.3)min;t=20.80,P0.05)。⑥无痛TEE组舒适度疼痛评分低于常规TEE组(t=−24.78,P<0.01)。结论无痛TEE是一项安全、有效的检查方法,对房间隔缺损患者各项生命体征及并发症的影响较常规TEE无明显差异,且能够提高检查舒适度,在足够的检查时间内可获取更加全面、清晰的图像,能更好地服务于临床。

关键词：房间隔缺损经食管超声心动图无痛麻醉

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