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Efficacy of scleral buckling for the treatment of rhegmatogenous retinal detachment using a novel foldable capsular buckle

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 558-563页

作者： Fang-Fang Fan Chang Xiao Liang Wang Xin-Ting Wang Dan-Dan liu Xing Ge Ya-Lu liu Su-Yan Li The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University Xuzhou 221000Jiangsu ProvinceChina Department of Ophthalmology Xuzhou First People’s HospitalXuzhou 221116Jiangsu ProvinceChina Eye Disease Prevention and Treatment Institute of Xuzhou Xuzhou 221116Jiangsu ProvinceChina The Affiliated Shuyang Hospital of Xuzhou Medical University Shuyang 223600Jiangsu ProvinceChina

●AIM:To evaluate the effectiveness and safety of scleral buckling for the treatment of rhegmatogenous retinal detachment(RRD)using a novel foldable capsular buckle(FCB).●METHODS:This was a series of case observation *** patients(18 eyes)who visited our ophthalmology department between August 2020 and August 2022 and were treated for RRD with scleral buckling using FCB were *** procedure was similar to conventional scleral buckling,while a balloon-like FCB was placed onto the retinal break with balanced salt solution filling for a broad,external indentation instead of the silicone *** retinal reattachment rate,best corrected visual acuity(BCVA),intraocular pressure(IOP),refractive dioptre and astigmatism degree,and complications were evaluated and recorded.●RESULTS:There were 7 males and 11 females aged *** average time course of RRD was 12d,ranging from *** retinal break was located in the superior quadrants in 8 eyes and in the inferior quadrants in 10 eyes,with macula-off detachments in 12 *** patients were followed-up for at least *** final retinal reattachment rate was 100%.The BCVA was significantly improved compared with the baseline(P0.05).Three patients had transiently high IOPs within one week after *** diplopia occurred in 5 patients after surgery and then disappeared after the balloon fluid was removed.●CONCLUSION:The success rate of FCB scleral buckling for RRD is *** procedure can be expected to be applied in new,uncomplicated cases of RRD.

关键词： rhegmatogenous retinal detachment scleral buckling foldable capsular buckle

Optimization of modelling strategies for regional landslide susceptibility assessment based on machine learning methods -A viewpoint from the modelling dataset design and partition

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Journal of Earth Science 2024年

作者： Yuhang Zhu Kunlong Yin Shuhao liu Zhenyi liu Taorui Zeng Institute of Geological Survey， China University of Geosciences Wuhan Faculty of Engineering， China University of Geosciences Institute of Future Civil Engineering Science and Technology， Chongqing Jiaotong University Institute of Frontier Interdisciplinary Technology， Chongqing Jiaotong University

The inappropriatemodelling strategies can lead to unsatisfactory prediction results for landslide susceptibility assessment (LSA). The objectivesof this study are to reveal the impact of dataset design value (ratio of negative to positive samples) and partition (ratio of training to testing dataset) on the accuracy of LSA based on different machine learning models. The Yunyang County of the Three Gorges Reservoir area (China) was taken as the study area and 15 conditioning factors were determined. Ten modelling datasets design values (0.125， 0.25， 0.5， 1， 2， 5， 8， 10， 12 and 15) were determined for the ratio of non-landslide and landslide samples， and each modelling dataset was divided into five partitions ((50:50) %， (60:40) %， (70:30) %， (80:20) % and (90:10) %) for the ratio of training and testing datasets. Each scenario was then applied on four machine learning models (Classification and Regression tree (CART)， Bayes Network (BN)， Logistic Regression (LR) and Multilayer Perceptron (MLP)). The optimal parameters of the modelling dataset were obtained by comparing 200 sets of the AUC under different combined scenarios. The results showed that different sampling strategies significantly affect the accuracy of LSA. With increasing of the design values， the AUC of the CART and MLP models first increased and then decreased， peaking at 1 (AUC=0.85 and 0.83)， while the AUC of the BN and LR models remained stable， vary from 0.755 to 0.796. Comparatively， different partitions had less impact on the AUC of various models， AUC vary by around 0.04. The highest prediction accuracy was obtained when the design value was 1 and the partition was (80:20) %. The outcome can provide a guideline for researchers to choose an optimal modelling strategy for LSA in the future.

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Advances in the differentiation of pluripotent stem cells into vascular cells

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World Journal of Stem Cells 2024年第2期16卷 137-150页

作者： Yi-Chang Jiao Ying-Xin Wang Wen-Zhu liu Jing-Wen Xu Yu-Ying Zhao Chuan-Zhu Yan Fu-Chen liu Department of Neurology Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Research Institute of Neuromuscular and Neurodegenerative Diseases Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Mitochondrial Medicine Laboratory Qilu Hospital(Qingdao)of Shandong UniversityQingdao 266103Shandong ProvinceChina Brain Science Research Institute Shandong UniversityJinan 250012Shandong ProvinceChina

Blood vessels constitute a closed pipe system distributed throughout the body,transporting blood from the heart to other organs and delivering metabolic waste products back to the lungs and *** in blood vessels are related to many disorders like stroke,myocardial infarction,aneurysm,and diabetes,which are important causes of death *** research for new appro-aches to disease modeling and effective treatment is needed due to the huge socio-economic burden on healthcare *** mice or rats have been widely used,applying data from animal studies to human-specific vascular physiology and pathology is *** rise of induced pluripotent stem cells(iPSCs)provides a reliable in vitro resource for disease modeling,regenerative medicine,and drug discovery because they carry all human genetic information and have the ability to directionally differentiate into any type of human *** review summarizes the latest progress from the establishment of iPSCs,the strategies for differentiating iPSCs into vascular cells,and the in vivo trans-plantation of these vascular *** also introduces the application of these technologies in disease modeling,drug screening,and regenerative ***,the application of high-tech tools,such as omics analysis and high-throughput sequencing,in this field is reviewed.

关键词： Induced pluripotent stem cell Blood vessels Vascular organoids Endothelial cells Smooth muscle cells Pericytes Tissue engineering vascular graft

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中国老年人多维贫困测算与分解

湖南财政经济学院学报 2024年第2期40卷 118-128页

作者：刘亮刘林林湖南财政经济学院经济地理学院湖南长沙410205 东北财经大学国际商学院辽宁大连116025

在巩固拓展脱贫攻坚成果同乡村振兴有效衔接阶段,对贫困问题的研究将转向多维贫困和相对贫困。文章基于2005-2014年中国老年人健康影响因素跟踪调查(CLHLS)数据,利用A-F多维贫困测量方法测算中国老年人在收入状况、生活质量、健康水平... 详细信息

在巩固拓展脱贫攻坚成果同乡村振兴有效衔接阶段,对贫困问题的研究将转向多维贫困和相对贫困。文章基于2005-2014年中国老年人健康影响因素跟踪调查(CLHLS)数据,利用A-F多维贫困测量方法测算中国老年人在收入状况、生活质量、健康水平、保障程度4个维度的多维贫困情况,并进一步按照区域、城乡、指标维度对其进行深入分解。测算与分解结果表明:2005-2014年,中国老年人的多维贫困发生率与贫困剥夺强度均呈现下降趋势,但仍有19.36%的老年人处于多维贫困状态。其中,东北地区、农村地区老年人多维贫困情况最为严重;收入贫困、养老保障缺乏与认知功能障碍对老年人多维贫困贡献度最高。

关键词：老年人多维贫困 A-F测算共同富裕

Two sex pheromone receptors for sexual communication in the American cockroach

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Science China(Life Sciences) 2024年第7期67卷 1455-1467页

作者： Na Li Renke dong Huanchao Zeng Yan Zhang Run Huang Wei liu Fengming Cao Jincong Yu Mingtao Liao Jingyou Chen Wenlei Zhang Zejian Huang Jiahui Wang Li Li Shen Zhu Danyan Huang Zining Li Xiaoshuai Zhang dongwei Yuan Nan Chen Yongliang Fan Guirong Wang Coby Schal Yufeng Pan Sheng Li Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhou 510631China Guangmeiyuan R&D Center Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied TechnologySouth China Normal UniversityMeizhou 514589China lingnan Guangdong Laboratory of Modern Agriculture Genome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of AgricultureNorthwest A&F UniversityYangling 712100China Department of Entomology and Plant Pathology North Carolina State UniversityRaleigh 27695USA The Key Laboratory of Developmental Genes and Human Disease School of Life Science and TechnologySoutheast UniversityNanjing 210096China

Volatile sex pheromones are vital for sexual communication between males and *** of the American cockroach,Periplaneta americana,produce and emit two sex pheromone components,periplanone-A(PA)and periplanone-B(PB).Although PB is the major sex attractant and can attract males,how it interacts with PA in regulating sexual behaviors is still *** this study,we found that in male cockroaches,PA counteracted PB *** identified two odorant receptors(ORs),OR53 and OR100,as PB/PA and PA receptors,***53 and OR100 were predominantly expressed in the antennae of sexually mature males,and their expression levels were regulated by the sex differentiation pathway and nutrition-responsive *** localization of OR53 and OR100 in male antennae further revealed that two types of sensilla coordinate a complex two-pheromone-two-receptor pathway in regulating cockroach sexual *** findings indicate distinct functions of the two sex pheromone components,identify their receptors and possible regulatory mechanisms underlying the male-specific and age-dependent sexual behaviors,and can guide novel strategies for pest management.

关键词： sex pheromone odorant receptor sexual attraction sex differentiation cockroach

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铁路网车流分配问题研究综述

交通运输工程与信息学报 2024年第1期22卷 206-219页

作者：薛锋周琳刘泳博西南交通大学交通运输与物流学院成都611756 综合交通运输智能化国家地方联合工程实验室成都611756 综合交通大数据应用技术国家工程实验室成都611756 浙江同花顺智富软件有限公司杭州310023

铁路网车流分配是铁路运输组织中的热点研究问题,也是铁路运营管理层面的重要研究内容。本文分析了铁路网车流分配优化问题的内涵及特点,并从模型构建及算法设计两个方面对国内外相关研究现状及研究特点进行了综述。在模型构建方面,按... 详细信息

铁路网车流分配是铁路运输组织中的热点研究问题,也是铁路运营管理层面的重要研究内容。本文分析了铁路网车流分配优化问题的内涵及特点,并从模型构建及算法设计两个方面对国内外相关研究现状及研究特点进行了综述。在模型构建方面,按照决策变量、优化目标和约束条件三个角度对既有研究进行分类,并指出决策变量主要依据点-弧模型和弧-路模型两种基本车流分配模型设置,其中弧-路模型的决策变量相对更少,在大规模车流分配模型中更为适用;优化目标通常选择广义费用中的一种或多种,并兼顾运输效益与点线能力协调进行设置;在约束条件的考虑上,大部分模型以传统约束条件为主,根据不同运输需求设置约束条件。在算法设计方面,分析发现启发式算法成为求解大规模路网问题的主要手段,而基于模型松弛和模型分解的精确算法以及基于模型修改的算法也逐步得到了广泛应用。在归纳分析既有研究特点的基础上,结合铁路货物运输内外部发展环境的变化,进一步展望了车流分配在模型建立、算法求解和创新方面的研究趋势,可为铁路车流分配研究提供一定参考。

关键词：铁路运输车流分配研究综述数学模型求解算法

基于全纯嵌入及帕德近似零极点侦测的电压稳定裕度评估算法

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电网技术 2024年第9期48卷 3790-3800,I0075页

作者：刘承锡罗永建董旭柱武汉大学电气与自动化学院湖北省武汉市430072 交直流智能配电网湖北省工程中心湖北省武汉市430000

针对电力系统电压稳定裕度评估问题,在预测校正框架下,提出了基于全纯嵌入方法以及帕德近似零极点侦测的电压稳定裕度快速计算方法。算法主要步骤包括预测、步长选择、校正、帕德近似及其零极点计算。在预测和步长选择步骤,采用变步长... 详细信息

针对电力系统电压稳定裕度评估问题,在预测校正框架下,提出了基于全纯嵌入方法以及帕德近似零极点侦测的电压稳定裕度快速计算方法。算法主要步骤包括预测、步长选择、校正、帕德近似及其零极点计算。在预测和步长选择步骤,采用变步长可拓展全纯嵌入法实现其他运行工况下的电压值预测,并基于预测误差分析选择合适步长。在校正步骤,当预测电压达到设定误差限值后采用灵活全纯嵌入对电压进行校正,提升算法的收敛性;最后求取电压幂级数的帕德近似的最小零极点,以实现快速的电压稳定裕度计算。此外,通过预测步骤获得的发电机无功出力的幂级数,可预判发电机无功出力越限,实现节点类型的快速转换。在多个IEEE标准算例中进行测验并与常用的连续潮流方法进行对比,验证了算法的准确性及计算快速性。

关键词：全纯嵌入预测校正帕德近似零极点电压稳定裕度

The algebra of symmetric tensors on smooth projective varieties In Memory of Professor Gang Xiao

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Science China Mathematics 2024年

作者： Arnaud Beauville Jie liu CNRS Laboratoire J.-A.Dieudonné Université C?te d'Azur Institute of Mathematics Academy of Mathematics and Systems ScienceChinese Academy of Sciences

In this paper, we discuss the C-algebra H0(X, S~·TX) for a smooth complex projective variety *** compute it in some simple examples, and give a sharp bound on its Krull dimension. Then we propose a conjectural charac...

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基于EBP-YOLOv8的葡萄叶病害检测与识别方法研究

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山东农业大学学报（自然科学版） 2024年第3期55卷 322-334页

作者：蔺瑶曾晏林刘金涛李佳骏李双董晖杨毅云南农业大学大数据学院云南昆明650201

为提高实际环境中葡萄叶病害检测的准确率,适合视频实时监测、无人机等嵌入式AI应用场景,对YOLOv8目标检测模型从模型结构、轻量化等方面进行改进,构建了EBP-YOLOv8。首先在颈部网络中引入BiFPN结构,加强模型特征层之间的融合,改善对小... 详细信息

为提高实际环境中葡萄叶病害检测的准确率,适合视频实时监测、无人机等嵌入式AI应用场景,对YOLOv8目标检测模型从模型结构、轻量化等方面进行改进,构建了EBP-YOLOv8。首先在颈部网络中引入BiFPN结构,加强模型特征层之间的融合,改善对小目标的检测能力;其次使用C2_P来替换颈部网络中的C2f结构,实现模型的轻量化,在降低模型计算量的同时而不影响其精度;然后在特征提取网络中融入EMA注意力机制,提升网络对感兴趣区域的关注,提升模型对复杂背景、相似病斑的识别能力;最后将CIoU损失函数替换为ECIoU损失函数,进一步提升模型的检测性能,使模型能够更好地收敛。EBP-YOLOv8对比YOLOv8n、Faster-RCNN、RetinaNet、YOLOv8n、YOLOv8s、YOLOv7、YOLOv7-Tiny、YOLOv4-Tiny,mAP分别提升了3.2%、13.87%、3.49%、3.2%、1.3%、5%、4.7%、8.8%,模型大小仅5.3MB。改进后的算法在轻量化及保证实时性的同时有效提高了检测精度,可以为开发葡萄叶病害实时检测边缘系统提供有效参考。

关键词：葡萄叶病害 YOLOv8 BiFPN EMA注意力机制轻量化