Results 31 to 40 of about 19,864 (168)
Zhongshan Daxue xuebao. Yixue kexue ban, 2022 目的探讨非免疫性胎儿水肿（NIHF）的超声特征及病因学分布情况。方法纳入2012年12月至2019年1月就诊于中山大学附属第一医院产前超声诊断为NIHF病例232例，回顾性分析其超声特征及病因学分布情况。结果① NIHF最常见于TTTS Ⅳ期（50/232，21.55%）；最常见超声水肿的部位为皮肤水肿（159/232，68.53%）；最常合并的畸形为心血管系统异常（15/232，6.47%）。NIHF的活产率为31.47%。② 185例行产前遗传学检测的病例中，异常检出率40.54%（75/185 ...
刘权瑞 +5 more
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Research on industrial Internet security detection and response based on digital twin [PDF]
Considering that traditional network security defense methods cannot meet the strict requirements of industrial Internet for reliability and stability, a method for anomaly detection and response in digital space was studied based on the idea of digital ...
CHEN Qingli +4 more
core +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 79-88, January 2026.ABSTRACT Objective To evaluate the proportion of optimal assessments of endometrial thickness (ET) achieved by transvaginal ultrasound (TVS) compared with a multimodal (MM) sonographic approach in women with abnormal uterine bleeding (AUB). Methods This prospective observational study was a subset of the EPI‐SURE study conducted between June and ...
S. Nijjar +5 more
wiley +1 more source
Anomaly Detection for Photovoltaic Based on Improved VMD-XGBoost-BiLSTM Combination Model [PDF]
Photovoltaic is a vital and rapidly developing form of renewable energy generated in China, and anomaly detection is a crucial reference for making decisions on its system operation and maintenance.
Bochao ZHAO, Jiajun MA, Lei CUI, Wenpeng LUAN, Jing ZHU
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Intelligent detection method on network malicious traffic based on sample enhancement [PDF]
, 2020 To address the problem that the existing methods of network traffic anomaly detection not only need a large number of training sets,but also have poor generalization ability,an intelligent detection method on network malicious traffic based on sample ...
Chengqiang JIN +3 more
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 738-746, December 2025.ABSTRACT Objective To evaluate the performance of non‐invasive prenatal testing (NIPT) in vanishing‐twin and multiple pregnancies. Methods This study was conducted as part of the TRIDENT‐2 study, in which NIPT was offered as a first‐tier screening test to women with a multiple pregnancy or vanishing‐twin pregnancy between 1 June 2020 and 31 March 2023 ...
J. C. A. van Eekhout +86 more
wiley +1 more source
Gaoya dianqi, 2018 介绍了一起220 kV GIS设备出线管母发热异常的分析处理过程。通过对红外测温、局放特高频检测、局放超声波检测、SF6成分检测等结果的分析,认为触头接触不良是导致发热异常的主要原因。经解体检查,发现导电杆与触指间存在明显刮痕,出线管母安装工艺不良导致电流不能均匀流过触指,从而引起发热异常。该起案例表明仅仅通过传统的回路电阻测试并不一定能有效发现接触不良缺陷,需结合其他检测手段进行综合评估。该次GIS设备异常的处理经验,为今后类似异常的处理分析提供借鉴与参考。
何良 +5 more
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 582-588, November 2025.ABSTRACT Objective The corpus callosum (CC) is an interhemispheric structure that facilitates communication between the two cerebral hemispheres. Anomalies of the CC are frequent and associated with a wide spectrum of altered neurodevelopmental outcomes.
R. Corroenne +55 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2019 【目的】探讨染色体微阵列分析技术（CMA）在全基因组水平分析持续性左上腔静脉（PLSVC）胎儿遗传性病因的临床应用价值。【方法】2014年1月至2016年12月在中山大学附属第一医院行胎儿系统超声筛查提示持续性左上腔静脉且在我院产前诊断中心接受常规染色体核型分析和CMA检测的81例胎儿纳入研究，比较持续性左上腔静脉胎儿核型分析和CMA检测染色体异常的检出率差异。根据是否合并其他超声异常，分为单纯组及合并异常组，比较单纯组与合并异常组染色体异常检出率差异。【结果】核型分析的异常率为18.5%（15/81），
杜柳 +5 more
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Gaoya dianqi, 2023 油中溶解气体分析是电力变压器常用的状态检测手段，在变压器运行与维护中发挥了显著作用，但因现有油中溶解气体在线监测系统可靠性问题及现场干扰，监测数据中充斥着大量的伪数据及错数据，易引起误判。针对此问题，监测系统常采用基于数据分布统计的阈值法判定数据真伪，因数据分布规律预先难以掌握，造成异常数据检出率普遍低下问题。文中依据油中溶解气体在线监测数据时间序列特点，提出了一种基于凝聚层次聚类的异常数据检测方法。首先，利用滑动时间窗对多种油中气体监测数据进行预处理，获得监测数据时间序列集，接着通过综合应用均值、阈值、
王文森 +4 more
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