Results 21 to 30 of about 30,206 (123)

Synthesis of MnO@Au nanocomposite and its applications in multifunctional imaging and photothermal treatment [PDF]

, 2016
肿瘤的诊断，特别是针对高致死性和侵袭性肿瘤的早期诊断，已经越来越得到人们的重视。但是，目前癌症的早期诊断也同癌症治疗一样，仍然是一项充满难度与挑战性的一项工作。现在的诊断方法包括了X射线计算机断层扫描技术(CT)，磁共振（MRI），超声成像（US），以及当下兴起的光声层析成像技术（PAI），由于每种成像方式都有其固有的缺点，所以任何单一成像方式都不能获得完全关于癌症的信息。本文设计了一种非常简便的方法，在室温条件下，第一次合成出以MnO和Au为基的草莓状MnO@Au复合纳米材料，实现了集MRI，CT ...
雷胜岚
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Coproduction as a Causal Process

Policy Studies Journal, Volume 54, Issue 1, February 2026.
ABSTRACT That many public goods and services are coproduced jointly by government agencies (regular producers) together with clients and citizens (consumer producers) represents a fundamental insight, although it has proven a challenge to define coproduction clearly and to study it rigorously.
Gregg G. Van Ryzin
wiley   +1 more source

Engineering Ferritin Nanoparticles for Theranostic Probes Development [PDF]

, 2016
疾病的诊断治疗学在近年来得到了巨大关注和广泛研究，以蛋白质为基础的纳米材料具有优异生物相容性、生物降解性、灵活的可修饰性等特点，在癌症的诊疗一体化研究上发挥着巨大作用。鉴于发展以蛋白质为核心的新型诊疗一体化探针具有重要的可应用和临床转化意义，我们在本论文中研究设计了多种以铁蛋白为核心的纳米材料，并着重探究了各种材料在诊疗一体化中的应用。主要内容概括如下： 第一章，我们简要介绍了肿瘤诊断治疗技术的发展和现状，着重探讨了肿瘤诊断治疗一体化的研究现状 ...
王占通
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Transvaginal ultrasound for detecting parametrial involvement in suspected deep pelvic endometriosis: updated meta‐analysis

Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 7-14, January 2026.
ABSTRACT Objective To perform an updated meta‐analysis evaluating the diagnostic performance of transvaginal ultrasound (TVS) for detecting lateral parametrial involvement in women with suspected deep pelvic endometriosis. Methods A literature search was performed in the Web of Science, PubMed and Scopus databases from January 2021 to May 2024 for ...
J. L. Alcázar, C. Montoya, C. Candau, C. Catalan, R. Orozco, M. Á. Pascual, S. Ajossa, S. Guerriero   +7 more
wiley   +1 more source

Research on Methods of Modeling and Fault Diagnosis for Micro Direct-Current Motors [PDF]

, 2015
直流微电机以体积小、重量轻、便于控制等优点被广泛应用于生产消费领域，在微型精密仪器中尤为重要。为了保证产品出厂品质，生产过程必须对直流微电机进行100%检测。目前检测主要依靠人工的经验来判断电机的好坏，其工作量大，生产效率低，漏检现象严重，导致电机出厂质量不稳定。因此有必要寻找一种简便和可靠的直流微电机在生产线上的故障检测技术。该技术即可以对出厂前的直流微电机进行自动在线检测，以保证直流微电机的出厂合格率；又可以推广应用于其他永磁直流电机的故障检测与诊断。 通过分析空载下直流电机的动态数学模型 ...
谢志平
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Endometrial assessment in abnormal uterine bleeding: transvaginal ultrasound alone may not be good enough

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, S. Kastora, A. Bajrami, S. Solangon, M. Widschwendter, D. Jurkovic   +5 more
wiley   +1 more source

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

Genetic Confirmations of Dwarf Lemurs Across Madagascar Highlights Complex Biogeographic Patterns 马达加斯加全境鼠狐猴的遗传确认揭示了复杂的生物地理模式

Integrative Conservation, Volume 4, Issue 4, Page 665-674, December 2025.
Using a diagnostic mitochondrial marker gene, we document the presence of furry‐eared dwarf lemurs, a species known from Madagascar's eastern montane rainforests, in several forest fragments across the island's central highlands. These findings raise new questions about when this species colonized these sites, how they tolerate these changing and ...
Marina B. Blanco, Lydia K. Greene, Antonin Andriamahaihavana, Jean‐Basile Andriambeloson, Radosoa Andrianaivoarivelo, Herizo Andrianantenaina, Ando Andriantsalohimisantatra, Landry Bemita, Chris Birkinshaw, Jean Marcellin Dimbilahy, Elaine E. Guevara, Anna Mananjara Mahefaniaina, Manitra F. Rajaonarison, Toky H. Rakotoarinivo, Fenonirina Rakotoarison, Lovasoa Sylviane Rakotozafy, Elodi Rambeloson, Tianjanahary Randriamboavonjy, Yockline Randriamihanta, Hoby A. Rasoanaivo, Rojo N. Ravelojaona, Josia Razafindramanana, Sandratra R. Rakotonomenjanahary, Tahiry V. Rivoharison, Haja R. Tongasoa, Rachel C. Williams, Fanomezana M. Ratsoavina, Anne D. Yoder   +27 more
wiley   +1 more source

Metabolomic Study on the Advanced Pancreatic Cancer Model in Nude Mouse [PDF]

, 2016
胰腺癌是一种恶性程度极高的消化道类恶性肿瘤，早期无显著病征，病人在确诊时病情基本已处于中晚期，而研究显示，直径小于2cm和1cm的胰腺癌术后5年生存率分别可达30%-60%和超过75%，远高于中晚期术后5年生存率。 本文为课题“基于核磁共振的代谢组学技术发现胰腺癌的生物标志物及早期诊断应用”的一部分。整个课题目的在于通过系统分析动物和人类胰腺癌中晚期模型代谢通道的异同点，然后通过构建动物早期胰腺癌模型，并结合中晚期动物与人类胰腺癌代谢通路的共同点 ...
李志水
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Adverse neonatal outcomes in small‐for‐gestational age twins identified using twin vs singleton growth charts: systematic review and meta‐analysis

Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 706-715, December 2025.
ABSTRACT Objective To evaluate the use of twin vs singleton growth charts for detecting small‐for‐gestational‐age (SGA) twins at risk of adverse neonatal outcomes. Methods MEDLINE, EMBASE, CINAHL, Cochrane and Scopus databases were searched electronically from inception to May 2024.
S. Sorrenti, D. Di Mascio, A. Khalil, F. D'Antonio, F. Zullo, E. D'Alberti, V. D'Ambrosio, I. Mappa, A. Giancotti, G. Rizzo   +9 more
wiley   +1 more source