Results 51 to 60 of about 18,001 (167)
Online detection system and its application for mixed-oil interfaces in batch transportation of methanol via refined oil pipelines [PDF]
ObjectiveAccurate detection of quality indicators and mixed oil concentration at the mixed oil interface during the batch transportation of various media (gasoline, diesel, methanol, etc.) in refined oil pipelines is essential for identifying the mixed ...
Chunfeng SONG +7 more
core +1 more source
Integrative Conservation, Volume 4, Issue 3, Page 302-309, September 2025.We discussed the key assumptions of Distance sampling that were considered hard to meet in mountainous terrains and potential solutions for them. Our survey yielded comparable estimates from distance sampling and double‐observer survey, although the confidence interval from distance sampling was broader.
Lingyun Xiao +4 more
wiley +1 more source
Gaoya dianqi, 2005 介绍了3种可用于定位检测GIS中SF6气体泄漏的光学成像技术。这些技术能使操作者看到泄漏气体清晰图像,快速识别泄漏源;其远距离识别和瞬时检测能力使检测者可以快速大范围地扫描GIS,泄漏能被立即识别。相对于传统的非在线检测和其它在线检测技术来说,光学成像技术在SF6气体泄漏检测方面,是一个比较大的突破。
吴变桃, 肖登明, 尹毅
doaj
, 2018 为了提高均四甲苯氧化制均苯四甲酸二酐的收率,以某二酐生产企业生产的高效钒钛催化剂,在固定床反应器中对均四甲苯气相氧化制均苯四甲酸二酐反应体系的动力学进行了研究。首先提出了可能的反应网络,然后设计相关动力学测试实验,建立均四甲苯氧化反应的幂函数宏观动力学模型。进一步的实验和统计分析表明,模型计算值与实验值吻合较好。宏观动力学方程的建立为后续将其用于相应的固定床反应器模拟提供了基础保证。新疆维吾尔自治区自然科学基金项目(2015211A004 ...
曹玲, 曹茂洪, 薛来奇, 陈秉辉
core
Is parvovirus B19 infection upsurge in 2023–2024 associated with adverse pregnancy outcome?
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 3, Page 307-313, September 2025.ABSTRACT Objective A surge in parvovirus B19 infections has been reported in 2023–2024 across Europe and the USA, raising concerns about the associated perinatal risks. The aim of this study was to compare perinatal outcomes following maternal parvovirus B19 infection during the 2023–2024 period with those from a pre‐2023 cohort.
S. Prasad +22 more
wiley +1 more source
Development of an Aerodynamic Lens-Proton Transfer Reaction Mass Spectrometry (PTR-MS) Apparatus for Online Detection of Organic Compounds in Aerosol Particles [PDF]
Atmospheric organic aerosols consist of both gas-phase organic compounds and particle-phase organic compounds. The components of aerosol particles (solid or liquid droplets) can undergo exchange or chemical reactions with gas-phase components ...
Chao-qun HUANG +11 more
core +1 more source
External validation of QUiPP App in three independent European cohorts of symptomatic women
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 163-174, August 2025.ABSTRACT Objective To validate externally the QUantitative Innovation in Predicting Preterm birth (QUiPP) App v.2 for the prediction of spontaneous preterm birth (sPTB) in symptomatic women attending tertiary care in Europe. Methods The QUiPP App v.2 was validated in three independent datasets: a prospective European multicenter cohort across five ...
A. M. Fischer +8 more
wiley +1 more source
Dianci bileiqi, 2006 讨论了检测盘形悬式瓷绝缘子的火花间隙法、电压分布法、测量绝缘电阻法、航测法和地面初判法。认为采用火花间隙法和电压分布法检测绝缘子,有漏检、误判等现象;采用在线绝缘电阻法进行测试,可靠性较高。同时指出,航测法和地面初判法是今后在线检测的发展方向。
邬正荣
doaj
Automatic Control for Ion Exchange in Tungsten Metallurgy [PDF]
, 2008 本文介绍横河DCS系统应用于离子交换法钨冶炼，填补了这一领域的空白，同时在使用过程，针对系统的存在的缺陷不断进行改造，同时根据工艺及扩展建设的需要进行开发，使这一系统不断完善，取得应用的成功。 本文主要讨论钨离子交换法钨冶炼的工艺过程以及自动控制系统的实现。介绍了离子交换法钨冶炼的基本工艺过程及控制需求；介绍PLC、DCS系统以及FCS系统的特点及差异性比较，同时对系统的发展方向进行了研究；介绍横河μXL及CS1000集散型控制系统的基本构成、功能特点 ...
陈志辉
core
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 200-209, August 2025.Abstract Objectives Neonates with critical congenital heart disease (CCHD) are at risk for adverse early brain development and long‐term neurodevelopmental sequelae. Insulin‐like growth factor‐1 (IGF‐1) and insulin‐like growth factor binding protein‐3 (IGFBP‐3) are essential contributors to brain growth and maturation.
M. Nijman +33 more
wiley +1 more source