Results 21 to 30 of about 17,013 (139)

Numerical Simulation And Experiment Study On Magnetoacoustic Emission with Magnetic Induction [PDF]

, 2015
铝合金板材具有高强度、低密度、强耐腐蚀、高断裂韧性和良好的高低温特性等优点，是制造宇宙飞船、运载火箭、飞机、舰船、坦克、装甲车和高速列车的主要材料。然而，由于加工工艺限制，铝合金板材在生产过程中不可避免地存在分层、夹杂、裂纹和氧化膜等缺陷。无损检测技术是一种在不破坏待测物材质与性能前提下实现构件质量检测的技术，目前已在许多领域成为确保产品质量和可靠性的强制性措施。 本文研究的感应式磁声发射无损检测方法是利用线圈在导体感应出的涡流在静态磁场的作用下会受到洛仑兹力的作用使导体发生机械振动，进而产生磁声信号 ...
李超
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Undetected cases after implementation of first‐trimester anomaly scan in low‐risk population: insights from the IMITAS study

Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 27-33, January 2026.
ABSTRACT Objective To assess the effectiveness of the first‐trimester anomaly scan (FTAS) performed as part of a centrally steered national screening program in The Netherlands by investigating false‐negative cases with a fetal structural anomaly that was not detected at the FTAS.
K. Bronsgeest, E. E. R. Lust, S. C. E. Zaaijer, L. Henneman, N. Crombag, C. M. Bilardo, R.‐J. H. Galjaard, E. Sikkel, A. K. K. Teunissen, M. N. Bekker, M. C. Haak, Collaborators, A. B. C. Coumans, A. Elvan‐Taşpınar, S. Galjaard, A. T. J. I. Go, E. van Leeuwen, G. T. R. Manten, E. Pajkrt   +18 more
wiley   +1 more source

Research of Esophagus Disease-aided diagnosis Based on Ultrasonic Endoscope Image [PDF]

, 2015
食管疾病是常见疾病之一，对人们的健康产生了严重的威胁。随着超声内镜(EUS)应用的发展和普及，提高了食管成像清晰度，成为临床诊治的必要诊断工具。超声内镜可为食管疫病的诊断及给出合理的治疗方案给予非常大的帮助，但是国内外对EUS诊断主要依靠内镜医师个人经验，缺乏客观诊断依据，因此使得EUS的应用受到限制。由此看来利用计算机技术对食管疾病进行辅助诊断是非常有意义的。 本文主要研究三类食管EUS图像分类的问题，包括食管早癌、食管平滑肌瘤以及正常食管。首先对EUS图像进行去噪处理，之后提取EUS图像的特征点 ...
魏倩倩
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Performance of non‐invasive prenatal testing in vanishing‐twin and multiple pregnancies: results of TRIDENT‐2 study

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, C. J. Bax, L. van Prooyen Schuurman, E. C. Becking, A. J. E. M. van der Ven, D. Van Opstal, E. M. J. Boon, M. V. E. Macville, M. N. Bekker, R. J. H. Galjaard, on behalf of the Dutch NIPT Consortium, E.A. Sistermans, L. Henneman, A. Polstra, E. Voorhoeve, S.L. Zelderen‐Bhola, E.M.J. Boon, M.P.R. Lombardi, M.C. Bakker, E.J. Bradley, E.M.J. Boon, C. Louwerens‐Zintel, M. Smit, M.C. van Maarle, M.B. Tan‐Sindhunata, K. van der Meij, H. Meij, C.J. Bax, E. Pajkrt, I.H. Linskens, L. Martin, J.T. Gitsels‐van der Wal, R. J. H. Galjaard, D. van Opstal, M.I. Srebniak, F.M. Sarquis Jehee, I.H.I.M. Hollink, F. Sleutels, W. de Valk, W.H. Deelen, A.M.S. Joosten, K.E.M. Diderich, M.E. Redeker, A.T.J.I. Go, M.F.C.M. Knapen, S. Galjaard, A.K.E. Prinsen, A.P.G. Braat, M.J.V. Hoffer, N.S. den Hollander, E.J.T. Verweij, M.C. Haak, M.V.E. Macville, S.J.C. Stevens, A. van der Wijngaard, L.H. Houben, M.A.A. van Esch‐Lennarts, L. Hamers, A.G.P. Jetten, S.A.I. Ghesquiere, B. de Koning, M. Zamani Esteki, C.J. Heesterbeek, C.E.M. de Die‐Smulders, H. Brunner, M.J. Pieters, A.B.C. Coumans, D.F.C.M. Smeets, B.H.W. Faas, D. Westra, M.M. Weiss, I. Derks‐Prinsen, I. Feenstra, M. van Rij, E. Sikkel, R.F. Suijkerbuijk, B. Sikkema‐Raddatz, I.M. van Langen, K. Bouman, L.K. Duin, G.H. Schuring‐Blom, K.D. Lichtenbelt, M.N. Bekker, E. van Vliet‐Lachotzki, J. Pot, A. J. E. M. van der Ven, S van 't Padje   +86 more
wiley   +1 more source

Impact of fetal and maternal characteristics on the accuracy and precision of sonographic fetal weight estimation: population‐based study

Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 747-753, December 2025.
ABSTRACT Objective Ultrasound‐based fetal growth assessment is an essential part of clinical decision‐making in modern obstetric care. This study aimed to evaluate the impact of maternal and fetal characteristics on the accuracy and precision of sonographic fetal weight estimation.
M. Granfors, Ä. Mantel, O. Axelsson, S. Cnattingius, L. Lindström   +4 more
wiley   +1 more source

Fuerza Feminista: Confronting Intersectional Data Violence by Archiving the Movement Against Antifeminicides in the Paso del Norte Region

Sexuality, Gender &Policy, Volume 8, Issue 4, November 2025.
ABSTRACT For over 30 years, the northern Mexican state of Chihuahua bordering Texas and New Mexico has experienced and witnessed multiple forms of violence across its rural and urban regions. Communities are besieged with cartel and gender‐based violence and the saturation of international corporations that pay less than livable wages for workers in ...
Sylvia Fernández Quintanilla, Cynthia Bejarano   +1 more
wiley   +1 more source

Effect of Different Methods of Analgesia on Analgesic after Total Knee Arthroplasty [PDF]

, 2016
目的比较不同镇痛方法（局部镇痛、硬膜外镇痛、静脉镇痛、髂筋膜间隙阻滞复合静脉镇痛）对全膝关节置换术（TKA）术后镇痛的效果影响。 方法择期单侧TKA患者80例，随机分为四组：局部镇痛组（L组）、静脉镇痛组（I组）、硬膜外镇痛组（E组）、髂筋膜间隙阻滞复合静脉镇痛组（F＋I组），术中均采用腰硬联合麻醉。记录术前、术毕1、8、24、48h静息VAS评分和术前、术毕8、24、48h运动VAS评分；记录患者术后其它镇痛药物（凯酚、丁丙诺菲皮贴）的额外使用次数；记录术前、术后8、24h的IL-6和皮质醇水平 ...
郑星星
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Prenatal evaluation, diagnosis and management of fetal corpus callosal abnormalities: international Delphi consensus

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, D. Paladini, I. Papastefanou, R. Chaoui, L. Pomar, L. Guibaud, K. Krajden Haratz, R. K. Pooh, M. Herrera, R. Ximenes, G. Azumendi, G. Pilu, L. J. Salomon, Collaborators, G. Turkyilmaz, D. L. Rolnik, W. Sepulveda, G. Rizzo, R. Llorens, S. Meagher, B. Tutschek, M. Aertsen, S. Agarwal, T. Tarui, E. Scola, D. Pretorius, A. Henry, J. Binder, E. R. Guzman, C. Rodo, A. Schiattarella, K. Grossman, S. Bakalis, J. Pascual‐Mancho, E. Eixarch, P. Galati, D. Bittencourt Sodré Barmpas, M. Savvidou, B. M. E. Adriaanse, M. T. Izquierdo, V. Cecotti, N. Sananès, D. Muresan, D.‐G. Iliescu, V. Faure‐Bardon, R. Has, C. Batukan, S. Ahmet Erol, A. Seval Ozgu‐Erdinc, B. Kapudere, E. Toprak, M. Akalin, S. Özeren, H. Golbasi, B. Kaya, B. Strizek   +55 more
wiley   +1 more source

Effect of aspirin on maternal hemodynamics in Chinese women at high risk for preterm pre‐eclampsia: longitudinal study

Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 621-630, November 2025.
ABSTRACT Objectives To compare the maternal hemodynamics of Chinese women at low and at high risk for preterm pre‐eclampsia (PE) and assess the differences in hemodynamic parameters between high‐risk women with or without prophylactic aspirin. Methods This was a prospective longitudinal case–control study of 857 Chinese women with a singleton pregnancy
X. Wang, J. Lin, Y. Chen, I. S. Wong, J. Liu, F. Liu, S. L. Lau, Q. Zhang, X. Xu, D. S. Sahota, A. P. W. Lee, L. C. Poon   +11 more
wiley   +1 more source

Research on Key Issues in Eddy Current Nondestructive Evaluation of Residual Stress in Aluminum Alloy [PDF]

, 2015
铝合金作为制造业发展的基础材料，在航空航天、高速铁路、建筑工程、船舶制造、汽车工业等支柱产业中有着重要地位。残余应力往往是造成铝合金结构破坏的重要因素。有效的评价应力状态，特别是导致损伤出现的临界应力状态是评价设备结构强度、可靠性的重要依据。传统的无损检测方法已广泛应用于工程实际中，但大部分局限于对已成型的缺陷进行检测。对于可能导致损伤出现的隐性、不规律变化的残余应力状态的评价则较为困难。 目前，应用较多的残余应力检测法主要有盲孔法、X射线法、超声波法以及磁测法。这些方法在使用上都存在很大的局限性 ...
汪涛
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