Results 21 to 30 of about 99,626 (185)
工程建设, 2021 航空发动机具有鲜明的精密性、复杂性特征，起初以活塞式发动机最为常见，现经长时间的发展、进步，生产制造体系进一步完善，涡扇、涡轮螺旋桨式发动机等逐渐登上历史舞台，在军事、民用等领域发挥着重要作用。文章聚焦航空发动机整机试验中存在的难点问题，并以其试验特征为基础分析了故障诊断系统设计思路，以模块为单位展开详细论述。
伟 党 +4 more
semanticscholar +1 more source
Zhongguo shiyan zhenduanxue, 2020 目的探讨分析心肌灌注成像(myocardial perfusion imaging,MPI)联合冠状动脉钙化积分(coronary artery calcium score,CACS)诊断冠心病(coronary artery disease,CAD)效能观察。方法选取我院2017年9月-2018年9月收治的130例拟诊断冠心病患者为研究对象并开展回顾性分析,均行MPI联合CACS检查,并于1个月内行CAG检查,以CAG检查结果为金标准,分析MPI、CACS及两者联合的诊断效能。结果 ...
蒲岚, 张玮, 林雪皎
doaj
Dianci bileiqi, 2021 现有的基于电磁感应理论的接地网故障诊断方法需要大量的磁场测量数据,为了解决该问题,笔者提出了一种基于支路影响系数分析的分层诊断方法。首先定义了支路影响系数,并根据影响系数建立了支路诊断难易程度的评价体系。在该评价体系的指导下,分层诊断方法的测量点选取更具针对性,并以分层递进的方式实现了高精确度的腐蚀诊断。在诊断模型求解方面,运用改进的鲸鱼优化算法,保证了分层诊断的准确性。最后,进行了分层诊断与普通磁场反演诊断的对比实验。实验结果表明:分层诊断方法可以在保证诊断准确率的情况下大幅减少测量点数量 ...
杨子杰, 王昕, 张轶珠
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 756-763, June 2026.ABSTRACT Objectives Cytomegalovirus (CMV) is the leading cause of congenital infectious neurosensory impairment. We aimed to present national epidemiological data on maternal CMV infection during pregnancy in France, focusing in particular on primary infection in the periconceptional period or first trimester, and to assess the impact of changes in ...
P. Coste‐Mazeau +176 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 836-851, June 2026.ABSTRACT Objective To determine whether ultrasound is non‐inferior to positron‐emission tomography/computed tomography (PET/CT) and diffusion‐weighted magnetic resonance imaging (DW‐MRI) in terms of overall diagnostic accuracy for the preoperative assessment of pelvic lymph‐node status in cervical cancer.
F. Frühauf +14 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 806-814, June 2026.ABSTRACT Objective To investigate the incidence of pre‐eclampsia (PE) and the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester PE screening algorithm across pregnancies conceived using assisted reproductive technology (ART), after ovulation induction (OI) and through spontaneous conception (SC).
A. S. L. Kjaer +23 more
wiley +1 more source
ABCA12 Frameshift Deletion in Domestic Cats With Ichthyosis Fetalis
Veterinary Dermatology, Volume 37, Issue 3, Page 365-374, June 2026.ABSTRACT Background Ichthyosis fetalis (IF), also known as harlequin ichthyosis, is a rare and often fatal autosomal recessive congenital skin disorder. It is characterized by thickened, hard skin plaques and deep skin fissures that limit mobility and cause malformations of the eyes, lips and ears.
Jeanna M. Blake +2 more
wiley +1 more source
Veterinary Dermatology, Volume 37, Issue 3, Page 375-385, June 2026.ABSTRACT Background Advances in transcriptomics have driven the demand for minimally invasive, reproducible and high‐yield skin sampling methods, particularly for studying inflammatory skin diseases in companion animals. Hypothesis/Objectives We tested tolerability, feasibility and RNA quantity and quality of three minimally invasive skin sampling ...
Ina Herrmann +2 more
wiley +1 more source
CT、MRI在眼眶海绵状血管瘤与眼眶神经鞘瘤影像学鉴别诊断中的研究
Zhongguo shiyan zhenduanxue, 2017 目的对CT、MRI在眼眶海绵状血管瘤与眼眶神经鞘瘤的影像学鉴别诊断中的应用价值进行研究。方法选取我院2015年3月至2016年3月收治的经CT诊断为眼眶海绵状血管瘤患者38例和眼眶神经鞘瘤患者45例,经MRI诊断为眼眶海绵状血管瘤患者41例和眼眶神经鞘瘤患者39例。对所有患者进行肿瘤鉴别诊断,主要分为定性诊断符合和定位诊断符合,定性诊断符合是影像学诊断与病理诊断结果一致;定位诊断符合是影像学诊断与手术定位结果一致。分别计算CT、MRI的定性、定位诊断符合率。结果 ...
李金星, 郭庆环, 张林昌
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Early diagnosis of liver cancer demands high sensitivity, high specificity, convenience and real‐time monitoring capabilities. However, it encounters challenges such as low concentration of markers, numerous interfering factors, and limitations of detection technologies.
Changsheng Shi +10 more
wiley +1 more source