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UAV-based field watermelon detection and counting using YOLOv8s with image panorama stitching and overlap partitioning
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作者 Liguo Jiang Hanhui Jiang +6 位作者 Xudong Jing Haojie Dang Rui Li Jinyong Chen Yaqoob Majeed Ramesh Sahni Longsheng Fu 《Artificial Intelligence in Agriculture》 2024年第3期117-127,共11页
Accurate watermelon yield estimation is crucial to the agricultural value chain,as it guides the allocation of agricultural resources as well as facilitates inventory and logistics planning.The conventional method of ... Accurate watermelon yield estimation is crucial to the agricultural value chain,as it guides the allocation of agricultural resources as well as facilitates inventory and logistics planning.The conventional method of watermelon yield estimation relies heavily onmanual labor,which is both time-consuming and labor-intensive.To address this,this work proposes an algorithmic pipeline that utilizes unmanned aerial vehicle(UAV)videos for detection and counting of watermelons.This pipeline uses You Only Look Once version 8 s(YOLOv8s)with panorama stitching and overlap partitioning,which facilitates the overall number estimation ofwatermelons in field.The watermelon detection model,based on YOLOv8s and obtained using transfer learning,achieved a detection accuracy of 99.20%,demonstrating its potential for application in yield estimation.The panorama stitching and overlap partitioning based detection and counting method uses panoramic images as input and effectively mitigates the duplications comparedwith the video tracking based detection and countingmethod.The counting accuracy reached over 96.61%,proving a promising application for yield estimation.The high accuracy demonstrates the feasibility of applying this method for overall yield estimation in large watermelon fields. 展开更多
关键词 Watermelon yield estimation Unmanned aerial vehicle Object detection Panorama stitching overlap partitioning
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Overlap吻合与π吻合在全腹腔镜全胃切除术中的应用
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作者 李锋 彭德伟 +2 位作者 李文艺 何静 黄金向 《郑州大学学报(医学版)》 CAS 北大核心 2024年第4期531-536,共6页
目的:比较Overlap吻合与π吻合在全腹腔镜全胃切除术(TLTG)中的应用效果。方法:选择2019年2月至2022年2月在成都市第五人民医院行TLTG的胃癌患者98例,根据食管空肠吻合方式分为Overlap吻合组(n=56)和π吻合组(n=42)。比较两组围手术期指... 目的:比较Overlap吻合与π吻合在全腹腔镜全胃切除术(TLTG)中的应用效果。方法:选择2019年2月至2022年2月在成都市第五人民医院行TLTG的胃癌患者98例,根据食管空肠吻合方式分为Overlap吻合组(n=56)和π吻合组(n=42)。比较两组围手术期指标(手术时间、吻合时间、术中出血量、淋巴结清扫数目、术后肛门排气时间、术后拔除引流管时间、术后住院时间、肿瘤上缘至食管切缘距离),吻合口相关并发症(吻合口出血、吻合口狭窄、吻合口漏)与随访并发症(吻合口溃疡、倾倒综合征、反流性食管炎、营养不良)发生情况,以及术前与术后3个月整体营养状况主观评估量表(PG-SGA)评分与营养状况客观指标(血红蛋白、白蛋白、总蛋白)水平的变化。结果:Overlap吻合组手术时间[(230.36±25.12)min vs(205.58±20.43)min]、吻合时间[(43.22±6.15)min vs(27.45±5.36)min]均长于π吻合组(P<0.05);两组吻合口相关并发症、随访并发症发生率及术前、术后3个月PG-SGA量表评分与营养状况客观指标水平的变化差异均无统计学意义(P>0.05)。结论:Overlap吻合和π吻合在TLTG术中各有优势,π吻合可缩短手术时间和吻合时间。 展开更多
关键词 胃癌 全腹腔镜全胃切除术 overlap吻合 π吻合 并发症 营养状况
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Partially Overlapped Channels- and Flow-Based End-to-End Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks 被引量:3
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作者 WANG Jihong SHI Wenxiao 《China Communications》 SCIE CSCD 2016年第4期1-13,共13页
Capacity reduction is a major problem faced by wireless mesh networks. An efficient way to alleviate this problem is proper channel assignment. Current end-toend channel assignment schemes usually focus on the case wh... Capacity reduction is a major problem faced by wireless mesh networks. An efficient way to alleviate this problem is proper channel assignment. Current end-toend channel assignment schemes usually focus on the case where channels in distinct frequency bands are assigned to mesh access and backbone, but actually backbone network and access network can use the same IEEE 802.11 technology. Besides, these channel assignment schemes only utilize orthogonal channels to perform channel assignment, and the resulting network interference dramatically degrades network performance. Moreover, Internet-oriented traffic is considered only, and peerto-peer traffic is omitted, or vice versa. The traffic type does not match the practical network. In this paper, we explore how to exploit partially overlapped channels to perform endto-end channel assignment in order to achieve effective end-to-end flow transmissions. The proposed flow-based end-to-end channel assignment schemes can conquer the limitations aforementioned. Simulations reveal that loadaware channel assignment can be applied to networks with stable traffic load, and it can achieve near-optimal performance; Traffic-irrelevant channel assignment is suitable for networks with frequent change of traffic load,and it can achieve good balance between performance and overhead. Also, partially overlapped channels' capability of improving network performance is situation-dependent, they should be used carefully. 展开更多
关键词 channel assignment: end-to-end partially overlapped channels load-aware traffic-irrelevant
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3D placement of unmanned aerial vehicles and partially overlapped channel assignment for throughput maximization 被引量:1
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作者 Chengming Zou Xiaoxiao Li +1 位作者 Xing Liu Mengya Zhang 《Digital Communications and Networks》 SCIE CSCD 2021年第2期214-222,共9页
This paper investigates a wireless system with multi-Unmanned Aerial Vehicles(UAVs)for improving the overall throughput.In contrast to previous studies that optimize the locations of UAVs and channel assignment separa... This paper investigates a wireless system with multi-Unmanned Aerial Vehicles(UAVs)for improving the overall throughput.In contrast to previous studies that optimize the locations of UAVs and channel assignment separately,this paper considers the two issues jointly by exploiting Partially Overlapped Channels(POCs).The optimization problem of maximizing network throughput is formulated as a non-convex and non-linear problem.In order to find a practical solution,the problem is decomposed into two subproblems,which are iteratively optimized.First,the optimal locations of UAVs are determined under a fixed channel assignment scheme by solving the mixed-integer second-order cone problem.Second,an efficient POC allocation scheme is determined via the proposed channel assignment algorithm.Simulation results show that the proposed approach not only significantly improves system throughput and service reliability compared with the cases in which only orthogonal channels and stationary UAVs are considered,but also achieves similar performance using the exhaustive search algorithm with lower time complexity. 展开更多
关键词 Unmanned aerial vehicle partially overlapped channel Throughput maximization Channel assignment
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右半结肠癌根治术中全腹腔镜下Overlap吻合的短期疗效及并发症分析
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作者 胡柏庚 张哲 +1 位作者 刘跃 孙亮 《现代肿瘤医学》 CAS 2024年第22期4329-4333,共5页
目的:通过对比全腹腔镜下顺蠕动侧侧吻合(Overlap吻合)与腹腔外吻合相关临床资料及短期疗效,探究腹腔内吻合在右半结肠癌根治术中的临床疗效及价值。方法:回顾性选择2021年01月至2023年12月我院胃肠与疝外科收治的腹腔镜右半结肠癌根治... 目的:通过对比全腹腔镜下顺蠕动侧侧吻合(Overlap吻合)与腹腔外吻合相关临床资料及短期疗效,探究腹腔内吻合在右半结肠癌根治术中的临床疗效及价值。方法:回顾性选择2021年01月至2023年12月我院胃肠与疝外科收治的腹腔镜右半结肠癌根治术患者临床资料,共计92例纳入临床研究。其中采用腹腔内Overlap吻合的患者为ICA组;采用腹腔外端侧吻合为ECA组。收集并分析两组患者临床资料,讨论全腹腔镜下Overlap吻合安全性及短期临床疗效差异。结果:纳入患者一般资料差异无统计学意义(P值>0.05)。手术资料方面,ICA组手术时间[(185.83±27.55)min;P=0.026]与吻合时间[(33.86±4.05)min;P<0.001]均显著长于ECA组,切口长度方面[(4.86±0.84)cm;P<0.001]ICA组显著短于ECA组。而术中出血、清扫淋巴结总数两组差异无统计学意义。术后康复方面,ICA组首次排气时间[(2.55±0.55)天;P=0.001]、首次进流质时间[(3.38±0.62)天;P<0.001]、下床时间[(2.71±0.55)天;P=0.006]、术后住院时间[(7.67±1.26)天;P=0.019]均优于ECA组,且ICA组术后引流量[(277.74±147.68)mL;P=0.017]显著少于ECA组。在术后第3天,ICA组疼痛VAS评分(3.19±0.77;P=0.04)低于ECA组。术后炎症指标方面,两组术后C反应蛋白、中性粒细胞-淋巴细胞比值(NLR)均无统计学差异(P值>0.05)。在手术后并发症方面,总并发症发生率、吻合口瘘、腹腔感染、腹腔出血、吻合口出血、切口感染、肺部感染、术后肠梗阻、术后胃瘫两组并无统计学差异(P值>0.05)。结论:全腹腔镜下Overlap吻合安全可行,具有术后肠道功能恢复更快、创伤更小等优势,手术疗效与传统腔镜辅助手术效果相当,且不会增加短期并发症发生率。 展开更多
关键词 右半结肠癌 腹腔内吻合 腹腔外吻合 overlap吻合
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Partially Overlapped Dual Laser Beams to Reduce Ablation Craters
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作者 Meng-Han Wang Jun-Le Qu Ming Zhu 《Chinese Physics Letters》 SCIE CAS CSCD 2020年第1期29-33,共5页
We present our experimental ablation results for partially overlapped dual nanosecond laser beams(PO-DB)on metal and glass surfaces.Numerical simulations are performed to evaluate the crater reduction potential of the... We present our experimental ablation results for partially overlapped dual nanosecond laser beams(PO-DB)on metal and glass surfaces.Numerical simulations are performed to evaluate the crater reduction potential of the PO-DB setup.Damage probability experiments proved the collaboration of two beams within the overlap region.Bright-field and three-dimensional profile measurements verify the reduced ablation area from the proposed PODB scheme.Laser-induced plasma is generated when transparent glass is ablated.Atomic emission of Na I(~589.95nm)shows comparable signal between the PO-DB set and the traditional single laser beam set.The proposed PO-DB ablation mechanism could also be applied to femtosecond laser systems. 展开更多
关键词 DUAL TRANSPARENT overlap
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Partially Overlapping Channel Assignment Using Bonded and Non-Bonded Channels in IEEE 802.11n WLAN
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作者 MdSelim Al Mamun Fatema Akhter 《Computers, Materials & Continua》 SCIE EI 2022年第5期3161-3178,共18页
Nowadays,wireless local area network(WLAN)has become prevalent Internet access due to its low-cost gadgets,flexible coverage and hasslefree simple wireless installation.WLAN facilitates wireless Internet services to u... Nowadays,wireless local area network(WLAN)has become prevalent Internet access due to its low-cost gadgets,flexible coverage and hasslefree simple wireless installation.WLAN facilitates wireless Internet services to users with mobile devices like smart phones,tablets,and laptops through deployment of multiple access points(APs)in a network field.Every AP operates on a frequency band called channel.Popular wireless standard such as IEEE 802.11n has a limited number of channels where frequency spectrum of adjacent channels overlaps partially with each other.In a crowded environment,users may experience poor Internet services due to channel collision i.e.,interference from surrounding APs that affects the performance of the WLAN system.Therefore,it becomes a challenge to maintain expected performance in a crowded environment.A mathematical model of throughput considering interferences from surrounding APs can play an important role to set up a WLAN system properly.While set up,assignment of channels considering interference can maximize network performance.In this paper,we investigate the signal propagation of APs under interference of partially overlapping channels for both bonded and non-bonded channels.Then,a throughput estimation model is proposed using difference of operating channels and received signal strength indicator(RSSI).Then,a channel assignment algorithm is introduced using proposed throughput estimation model.Finally,the efficiency of the proposal is verified by numerical experiments using simulator.The results show that the proposal selects the best channel combination of bonded and non-bonded channels that maximize the performance. 展开更多
关键词 Wireless local area network partially overlapping channel throughput estimation model channel assignment algorithm
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Modified overlapped partly parallel decode for AR4JA codes in deep space communication
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作者 李明 杨明川 +2 位作者 吕谷 李慧 郭庆 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2012年第5期123-128,共6页
In this paper, according to the AR4JA codes in deep space communication, two kinds of iterative decoding including partly parallel decoding and overlapped partly parallel decoding are analyzed, and the advantages and ... In this paper, according to the AR4JA codes in deep space communication, two kinds of iterative decoding including partly parallel decoding and overlapped partly parallel decoding are analyzed, and the advantages and disadvantages of them are listed. A modified overlapped partly parallel decoding that not only inherits the advantages of the two algorithms, but also overcomes the shortcomings of the two algorithms is proposed. The simulation results show that the three kinds of decoding have the same decoding performance; modified overlapped partly parallel decoding improves the iterative convergence rate and the throughput of system. 展开更多
关键词 deep space communication AR4JA codes modified overlapped partly parallel decoding
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Computation of Optical Force on Nanoparticles Using Locally Non-Orthogonal Overlapping Yee FDTD Method
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作者 Jinjie Liu Moysey Brio Jerome V. Moloney 《Journal of Electromagnetic Analysis and Applications》 2012年第11期452-456,共5页
In this paper, a locally non-orthogonal overlapping Yee (OY) FDTD method is proposed in order to accurately calculates the optical force on dielectric and dispersive nanoparticles. It extends our previous work to geom... In this paper, a locally non-orthogonal overlapping Yee (OY) FDTD method is proposed in order to accurately calculates the optical force on dielectric and dispersive nanoparticles. It extends our previous work to geometries with sharp corners and dispersive materials. In addition to consistently achieving the smallest errors in comparison to the standard FDTD method, the OY approach is a stable non-orthogonal FDTD method that attains second-order convergence when sharp corners are present. 展开更多
关键词 FDTD overlapPING Yee Optical FORCE NANOpartICLE
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Overlapping approach Proton Pump Inhibitors/Nux vomica-Heel as new intervention for gastro-esophageal reflux management:Delphi consensus study
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作者 Edda Battaglia Luciano Bertolusso +2 位作者 Marco Del Prete Marco Monzani Marco Astegiano 《World Journal of Gastroenterology》 SCIE CAS 2024年第18期2467-2478,共12页
BACKGROUND Gastro-esophageal reflux disease(GERD)may affect the upper digestive tract;up to 20%of population in Western nations are affected by GERD.Antacids,histamine H2-receptor antagonists,and Proton Pump Inhibitor... BACKGROUND Gastro-esophageal reflux disease(GERD)may affect the upper digestive tract;up to 20%of population in Western nations are affected by GERD.Antacids,histamine H2-receptor antagonists,and Proton Pump Inhibitors(PPIs)are considered the referring medications for GERD.Nevertheless,PPIs must be managed carefully because their use,especially chronic,could be linked with some adverse effects.An effective and safe alternative pharmacological tool for GERD is needed.After the identification of potentially new medications to flank PPIs,it is mandatory to revise and improve good clinical practices even through a consensus process.AIM To optimize diagnosis and treatment guidelines for GERD through a consensus based on Delphi method.METHODS The availability of clinical studies describing the action of the multicomponent/multitarget medication Nux vomica-Heel,subject of the consensus,is the basic prerequisite for the consensus itself.A modified Delphi process was used to reach a consensus among a panel of Italian GERD specialists on the overlapping approach PPIs/Nux vomica-Heel as a new intervention model for the management of GERD.The Voting Consensus group was composed of 49 Italian Medical Doctors with different specializations:Gastroenterology,otolaryngology,geriatrics,and general medicine.A scientific committee analyzed the literature,determined areas that required investigation(in agreement with the multiple-choice questionnaire results),and identified two topics of interest:(1)GERD disease;and(2)GERD treatment.Statements for each of these topics were then formulated and validated.The Delphi process involved two rounds of questioning submitted to the panel experts using an online platform.RESULTS According to their routinary GERD practice and current clinical evidence,the panel members provided feedback to each questionnaire statement.The experts evaluated 15 statements and reached consensus on all 15.The statements regarding the GERD disease showed high levels of agreement,with consensus ranging from 70%to 92%.The statements regarding the GERD treatment also showed very high levels of agreement,with consensus ranging from 90%to 100%.This Delphi process was able to reach consensus among physicians in relevant aspects of GERD management,such as the adoption of a new approach to treat patients with GERD based on the overlapping between PPIs and Nux vomica-Heel.The consensus was unanimous among the physicians with different specializations,underlying the uniqueness of the agreement reached to identify in the overlapping approach between PPIs and Nux vomica-Heel a new intervention model for GERD management.The results support that an effective approach to deprescribe PPIs through a progressive decalage timetable(reducing PPIs administration to as-needed use),should be considered.CONCLUSION Nux vomica-Heel appears to be a valid opportunity for GERD treatment to favor the deprescription of PPIs and to maintain low disease activity together with the symptomatology remission. 展开更多
关键词 Gastro-esophageal reflux disease Proton Pump Inhibitors CONSENSUS Nux vomica-Heel overlapPING Decalage
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Large-Scale Multi-Objective Optimization Algorithm Based on Weighted Overlapping Grouping of Decision Variables
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作者 Liang Chen Jingbo Zhang +2 位作者 Linjie Wu Xingjuan Cai Yubin Xu 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第7期363-383,共21页
The large-scale multi-objective optimization algorithm(LSMOA),based on the grouping of decision variables,is an advanced method for handling high-dimensional decision variables.However,in practical problems,the intera... The large-scale multi-objective optimization algorithm(LSMOA),based on the grouping of decision variables,is an advanced method for handling high-dimensional decision variables.However,in practical problems,the interaction among decision variables is intricate,leading to large group sizes and suboptimal optimization effects;hence a large-scale multi-objective optimization algorithm based on weighted overlapping grouping of decision variables(MOEAWOD)is proposed in this paper.Initially,the decision variables are perturbed and categorized into convergence and diversity variables;subsequently,the convergence variables are subdivided into groups based on the interactions among different decision variables.If the size of a group surpasses the set threshold,that group undergoes a process of weighting and overlapping grouping.Specifically,the interaction strength is evaluated based on the interaction frequency and number of objectives among various decision variables.The decision variable with the highest interaction in the group is identified and disregarded,and the remaining variables are then reclassified into subgroups.Finally,the decision variable with the strongest interaction is added to each subgroup.MOEAWOD minimizes the interactivity between different groups and maximizes the interactivity of decision variables within groups,which contributed to the optimized direction of convergence and diversity exploration with different groups.MOEAWOD was subjected to testing on 18 benchmark large-scale optimization problems,and the experimental results demonstrate the effectiveness of our methods.Compared with the other algorithms,our method is still at an advantage. 展开更多
关键词 Decision variable grouping large-scale multi-objective optimization algorithms weighted overlapping grouping direction-guided evolution
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Autoimmune hepatitis-primary biliary cholangitis overlap syndrome complicated by various autoimmune diseases:A case report
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作者 Yu-Jie Qin Ting Gao +2 位作者 Xing-Nian Zhou Ming-Liang Cheng Hong Li 《World Journal of Clinical Cases》 SCIE 2024年第6期1174-1181,共8页
BACKGROUND Autoimmune hepatitis(AIH)and primary biliary cholangitis(PBC)are two common clinical autoimmune liver diseases,and some patients have both diseases;this feature is called AIH-PBC overlap syndrome.Autoimmune... BACKGROUND Autoimmune hepatitis(AIH)and primary biliary cholangitis(PBC)are two common clinical autoimmune liver diseases,and some patients have both diseases;this feature is called AIH-PBC overlap syndrome.Autoimmune thyroid disease(AITD)is the most frequently overlapping extrahepatic autoimmune disease.Immunoglobulin(IgG)4-related disease is an autoimmune disease recognized in recent years,characterized by elevated serum IgG4 levels and infiltration of IgG4-positive plasma cells in tissues.CASE SUMMARY A 68-year-old female patient was admitted with a history of right upper quadrant pain,anorexia,and jaundice on physical examination.Laboratory examination revealed elevated liver enzymes,multiple positive autoantibodies associated with liver and thyroid disease,and imaging and biopsy suggestive of pancreatitis,hepatitis,and PBC.A diagnosis was made of a rare and complex overlap syndrome of AIH,PBC,AITD,and IgG4-related disease.Laboratory features improved on treatment with ursodeoxycholic acid,methylprednisolone,and azathioprine.CONCLUSION This case highlights the importance of screening patients with autoimmune diseases for related conditions. 展开更多
关键词 overlap syndrome Autoimmune hepatitis Primary biliary cholangitis Primary sclerosing cholangitis Autoimmune thyroid disease Case report
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Overlapping infections of Mycobacterium canariasense and Nocardia farcinica in an immunocompetent patient:A case report
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作者 Hai-Yan Huang Kun-Peng Bu +1 位作者 Jin-Wei Liu Jing Wei 《World Journal of Clinical Cases》 SCIE 2024年第12期2079-2085,共7页
BACKGROUND Infections by non-tuberculous mycobacteria(NTM)have become more common in recent years.Mycobacterium canariasense(M.canariasense)was first reported as an opportunistic pathogen in 2004,but there have been v... BACKGROUND Infections by non-tuberculous mycobacteria(NTM)have become more common in recent years.Mycobacterium canariasense(M.canariasense)was first reported as an opportunistic pathogen in 2004,but there have been very few case reports since then.Nocardia is a genus of aerobic and Gram-positive bacilli,and these species are also opportunistic pathogens and in the Mycobacteriales order.Conventional methods for diagnosis of NTM are inefficient.Metagenomic next-generation sequencing(mNGS)can rapidly detect many pathogenic microorganisms,even rare species.Most NTM and Nocardia infections occur in immunocompromised patients with atypical clinical symptoms.There are no previous reports of infection by M.canariasense and Nocardia farcinica(N.farcinica),especially in immunocompetent patients.This case report describes an immunocompetent 52-year-old woman who had overlapping infections of M.canariasense,N.farcinica,and Candida parapsilosis(C.parapsilosis)based on mNGS.CASE SUMMARY A 52-year-old woman presented with a productive cough and chest pain for 2 wk,and recurrent episodes of moderate-grade fever for 1 wk.She received antibiotics for 1 wk at a local hospital,and experienced defervescence,but the productive cough and chest pain persisted.We collected samples of a lung lesion and alveolar lavage fluid for mNGS.The lung tissue was positive for M.canariasense,N.farcinica,and C.parapsilosis,and the alveolar lavage fluid was positive for M.canariasense.The diagnosis was pneumonia,and application of appropriate antibiotic therapy cured the patient.CONCLUSION Etiological diagnosis is critical for patients with infectious diseases.mNGS can identify rare and novel pathogens,and does not require a priori knowledge. 展开更多
关键词 overlapping infection Mycobacterium canariasense Nocardia farcinica Metagenomic next-generation sequencing technology Case report
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Novel method for extraction of ship target with overlaps in SAR image via EM algorithm
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作者 CAO Rui WANG Yong 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第4期874-887,共14页
The quality of synthetic aperture radar(SAR)image degrades in the case of multiple imaging projection planes(IPPs)and multiple overlapping ship targets,and then the performance of target classification and recognition... The quality of synthetic aperture radar(SAR)image degrades in the case of multiple imaging projection planes(IPPs)and multiple overlapping ship targets,and then the performance of target classification and recognition can be influenced.For addressing this issue,a method for extracting ship targets with overlaps via the expectation maximization(EM)algorithm is pro-posed.First,the scatterers of ship targets are obtained via the target detection technique.Then,the EM algorithm is applied to extract the scatterers of a single ship target with a single IPP.Afterwards,a novel image amplitude estimation approach is pro-posed,with which the radar image of a single target with a sin-gle IPP can be generated.The proposed method can accom-plish IPP selection and targets separation in the image domain,which can improve the image quality and reserve the target information most possibly.Results of simulated and real mea-sured data demonstrate the effectiveness of the proposed method. 展开更多
关键词 expectation maximization(EM)algorithm image processing imaging projection plane(IPP) overlapping ship tar-get synthetic aperture radar(SAR)
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Predictors of survival in autoimmune liver disease overlap syndromes
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作者 Dujinthan Jayabalan Yi Huang +11 位作者 Luis Calzadilla-Bertot Malik Janjua Bastiaan de Boer John Joseph Wendy Cheng Simon Hazeldine Briohny W Smith Gerry C MacQuillan Michael C Wallace George Garas Leon A Adams Gary P Jeffrey 《World Journal of Hepatology》 2024年第9期1269-1277,共9页
BACKGROUND Survival in patients with autoimmune liver disease overlap syndromes(AILDOS)compared to those with single autoimmune liver disease is unclear.AIM To investigate the survival of patients with AILDOS and asse... BACKGROUND Survival in patients with autoimmune liver disease overlap syndromes(AILDOS)compared to those with single autoimmune liver disease is unclear.AIM To investigate the survival of patients with AILDOS and assess the accuracy of non-invasive serum models for predicting liver-related death.METHODS Patients with AILDOS were defined as either autoimmune hepatitis and primary biliary cholangitis overlap(AIH-PBC)or autoimmune hepatitis and primary sclerosing cholangitis overlap(AIH-PSC)and were identified from three tertiary centres for this cohort study.Liver-related death or transplantation(liver-related mortality)was determined using a population-based data linkage system.Prognostic scores for liver-related death were compared for accuracy[including liver outcome score(LOS),Hepascore,Mayo Score,model for end-stage liver disease(MELD)score and MELD incorporated with serum sodium(MELD-Na)score].RESULTS Twenty-two AILDOS patients were followed for a median of 3.1 years(range,0.35-7.7).Fourteen were female,the median age was 46.7 years(range,17.8 to 82.1)and median Hepascore was 1(range,0.07-1).At five years post enrolment,57%of patients remained free from liver-related mortality(74%AIH-PBC,27%AIH-PSC).There was no significant difference in survival between AIH-PBC and AIH-PSC.LOS was a significant predictor of liver-related mortality(P<0.05)in patients with AIH-PBC(n=14)but not AIH-PSC(n=8).A LOS cut-point of 6 discriminated liver-related mortality in AIH-PBC patients(P=0.012,log-rank test,100%sensitivity,77.8%specificity)(Harrell's C-statistic 0.867).The MELD score,MELD-Na score and Mayo Score were not predictive of liver-related mortality in any group.CONCLUSION Survival in the rare,AILDOS is unclear.The current study supports the LOS as a predictor of liver-related mortality in AIH-PBC patients.Further trials investigating predictors of survival in AILDOS are required. 展开更多
关键词 Autoimmune liver disease overlap syndromes Liver outcome score Liver-related death Hepascore Autoimmune hepatitis Primary biliary cholangitis Primary sclerosing cholangitis
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空肠后离断Overlap吻合法在腹腔镜根治性全胃切除术中的应用
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作者 徐李嘉 沈晓军 《腹部外科》 2024年第2期106-110,共5页
目的探讨空肠后离断Overlap吻合法相比传统Overlap吻合法在腹腔镜根治性全胃切除术中的优势及安全性。方法回顾分析2018年3月至2023年6月在昆山市第一人民医院行腹腔镜根治性全胃切除术的胃癌病人资料共43例,根据食管空肠吻合方式的不... 目的探讨空肠后离断Overlap吻合法相比传统Overlap吻合法在腹腔镜根治性全胃切除术中的优势及安全性。方法回顾分析2018年3月至2023年6月在昆山市第一人民医院行腹腔镜根治性全胃切除术的胃癌病人资料共43例,根据食管空肠吻合方式的不同进行分组。研究组25例,采用空肠后离断Overlap吻合法进行食管空肠重建;对照组18例,采用传统Overlap吻合法。比较两组病人在围手术期及术后近期指标等方面有无差异。结果两组病人的一般资料比较,差异均无统计学意义(均P>0.05)。两组病人均顺利完成手术,无中转开腹病例。在饮食随访中,研究组病人术后1个月均已恢复半流质饮食或普食,术后3个月均能进食普食。两组病人的术中出血量、术后住院时间以及吻合口漏、吻合口狭窄、吻合口出血等吻合口并发症的发生率相比较,差异均无统计学意义(均P>0.05)。同对照组相比较,研究组的食管空肠吻合时间[(25.4±4.3)min比(39.8±4.5)min,t=–10.549,P<0.001]和手术时间[237 min(230~250 min)比258.6 min(250~285 min),Z=–5.517,P<0.001]均缩短,差异具有统计学意义(均P<0.001)。结论在腹腔镜根治性全胃切除的病人中,改良后的空肠后离断Overlap吻合较传统Overlap吻合更加简便,是一种较好的、安全可行的吻合方式。 展开更多
关键词 全腹腔镜全胃切除术 胃癌 overlap吻合
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The Practical Path of Labor Curriculum in Compulsory Education in China from the Perspective of Overlapping Influence Domain Theory
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作者 Yihan Yan Long Peng 《Journal of Contemporary Educational Research》 2024年第7期252-257,共6页
Since the new curriculum reform,labor education has gradually shed its marginalized position in the“five educations,”and the labor curriculum has become an independent course officially separated from comprehensive ... Since the new curriculum reform,labor education has gradually shed its marginalized position in the“five educations,”and the labor curriculum has become an independent course officially separated from comprehensive practical activity courses.Exploring the practical path of labor curriculum in compulsory education in China has become the primary task of labor education in China.Based on the practical situation of labor curriculum in compulsory education in China,drawing on the theory of overlapping influence domains,and from the perspective of collaborative education among family,school,and community,this paper proposes a curriculum practical path of“school-led”family-school-community collaboration and a curriculum practical path guided by“student-centered”sentiment,in order to provide references for the practice of labor curriculum in compulsory education in China. 展开更多
关键词 overlapping influence domain theory Compulsory education Labor curriculum
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Analysis of bulging process of aluminum alloy by overlapping sheet metal and its formability 被引量:8
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作者 高铁军 刘洋 +1 位作者 陈鹏 王忠金 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第4期1050-1055,共6页
The influences of strength coefficient K, work hardening exponent n and thickness t of the overlapping sheet on bulging process are analyzed based on hardening material model. Also, bulging experiments are carried out... The influences of strength coefficient K, work hardening exponent n and thickness t of the overlapping sheet on bulging process are analyzed based on hardening material model. Also, bulging experiments are carried out by taking the aluminum alloy LF21 as formed sheet metal, and selecting overlapping sheet with different thicknesses and material properties, by which accuracy of the above analysis result is verified in the aspects of geometric shape, thickness distribution and limit bulging height. The results show that higher strength coefficient K, larger work hardening exponent n and proper thickness of the overlapping sheet are helpful to improve the formability and forming uniformity of formed sheet metal. 展开更多
关键词 overlapping sheet aluminum alloy BULGING power hardening material FORMABILITY
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Overlapped peaks resolution for linear sweep polarography using Gaussian-like distribution 被引量:2
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作者 朱红求 王国伟 +2 位作者 阳春华 曹宇 桂卫华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第7期2181-2186,共6页
A resolution method based on Gaussian-like distribution for overlapped linear sweep polarographic peaks was proposed to simultaneously detect the polymetallic components, such as Zn(Ⅱ) and Co(Ⅱ), coexisting in t... A resolution method based on Gaussian-like distribution for overlapped linear sweep polarographic peaks was proposed to simultaneously detect the polymetallic components, such as Zn(Ⅱ) and Co(Ⅱ), coexisting in the leaching solution of zinc hydrometallurgy. A Gaussian-like distribution was constructed as the sub-model of overlapped peaks by analyzing the characteristics of linear sweep polarographic curve. Then, the abscissas of each peak and trough were pinpointed through multi-resolution wavelet decomposition, the curve and its derivative curves were fitted by using nonlinear weighted least squares (NWLS). Finally, overlapped peaks were resolved into independent sub-peaks based on fitted reconstruction parameters. The experimental results show that the relative error of half-wave potential pinpointed by multi-resolution wavelet decomposition is less than 1% and the accuracy of Ip fitted by NWLS is higher than 96%. The proposed resolution method is effective for overlapped linear sweep polarographic peaks of Zn(Ⅱ) and Co(Ⅱ). 展开更多
关键词 zinc hydrometallurgy Gaussian-like distribution overlapped peaks resolution multi-resolution wavelet decomposition nonlinear weighted least squares fitting
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Site-directed Mutagenesis Based on Overlap Extension PCR 被引量:4
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作者 雒丽娜 王盛 王玉炯 《Agricultural Science & Technology》 CAS 2012年第4期719-722,共4页
[Objective] To establish an efficient, convenient and economical method for site-directed mutagenesis. [Method] The target mutation was introduced into primers designed by DNAMAN5.0 software. Through overlap extension... [Objective] To establish an efficient, convenient and economical method for site-directed mutagenesis. [Method] The target mutation was introduced into primers designed by DNAMAN5.0 software. Through overlap extension PCR for twice obtained the mutation gene which of the full length of the recombinant Human Tissue type plasminogen activator (Reteplase). The mutation gene cloned it into pEASY- blunt simple cloning vector for sequencing. [Result] The sequencing results showed that three site mutations were fully consistent with the expected results (10~ site had been added a base-pair of A, C had been changed into G at 137~ site, G had been changed into A at 686~ site).Three site mutations were introduced by using overlap extension PCR on one-step. The overall rate of obtaining the mutant sites was 100%. Site-directed mutagenesis will clone the recombinant Human Tissue type plas- minogen activator and laid the basis for the functional study. [Conclusion] Site-directed mutagenesis was successfully implemented based on the overlap extension PCR which is an efficient, convenient and economical DNA-directed mutagenesis method. 展开更多
关键词 overlap extension PCR Site-directed mutagenesis Human Tissue Plas- minogen Activator (Reteplase)
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