Results 1 to 10 of about 5,729 (107)

Application of projective infrared angiography in venipuncture for a patient with myelodysplastic syndrome (投影式红外血管成像仪在1例骨髓增生异常综合征患者静脉穿刺中的应用)

open access: yes中西医结合护理, 2021
This paper summarized the application experience of projective infrared angiography in venipuncture for a patients with myelodysplastic syndrome(MDS).
BAI Yu (白羽), SUN Jingwen (孙静雯)
doaj   +1 more source

Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network

open access: yesJournal of Applied Mathematics, Volume 2021, Issue 1, 2021., 2021
Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu   +5 more
wiley   +1 more source

零值绝缘子串红外和紫外成像特性试验及耦合场仿真研究

open access: yesGaoya dianqi, 2021
为研究红外及紫外成像技术检测零值绝缘子的有效性,试验采集了不同湿度和污秽度下,零值绝缘子处于绝缘子串不同位置时的红外热像图和紫外视频,分析了绝缘子串的发热、放电特性。利用有限元软件建立了热—电耦合场仿真模型,计算验证了不同条件下绝缘子串的温度及电场分布。研究表明:污秽干燥条件下,绝缘子串不易放电,紫外成像法无法有效检测零值绝缘子,红外热像图显示正常绝缘子的温升明显高于零值绝缘子温升,红外成像法可以有效检测零值绝缘子;污秽湿润条件下,由于高电导率的重污秽以及污秽受潮的不均匀性 ...
王胜辉   +4 more
doaj  

Infrared and visible image fusion algorithm based on split-attention residual networks

open access: yesXibei Gongye Daxue Xuebao, 2022
在红外和可见光图像融合算法中, 图像信息的丢失始终是制约融合图像质量提升的关键问题, 为此, 提出了一种基于拆分注意力残差网络的红外和可见光图像融合算法, 使用带有拆分注意力模块的深层残差网络拓展感受野和提高跨通道信息融合能力, 运用平滑最大值单元函数作为激活函数进一步提升网络性能; 特征提取后运用零相位分量分析和归一化算法得到融合权重后完成图像融合。实验结果表明, 融合后的图像细节丰富, 边缘锐利; 在峰值信噪比、结构相似性指数度量和基于梯度的融合性能等指标上与经典的6种算法相比均有不同程度提升。
QIAN Kun   +3 more
doaj   +1 more source

极端环境下SF6气体红外热成像检漏技术在GIS带电检测中的效果加强方法研究

open access: yesGaoya dianqi, 2021
SF6红外成像检漏技术具有非接触式和高灵敏度的优点,然而对于某些观测环境复杂、背景干扰较多的场景,直接使用红外热成像检漏仪进行SF6气体检漏往往难以取得理想效果。针对上述情况,文中基于工程实际提出并研究了两种便捷可行的检漏效果加强方法,设计并完成相关实验以对其效果提升进行定量评估。一是利用负电晕检测技术与红外成像检漏仪联合检测,通过两种方法在不同适用场景下的互补提升SF6气体检漏的适用范围;二是针对特定场景,采用自加热金属板等方法改善拍摄背景和周围温度,有效提升红外成像效果 ...
许侃   +5 more
doaj  

Hyperspectral outcrop models for palaeoseismic studies

open access: yesThe Photogrammetric Record, Volume 34, Issue 168, Page 385-407, December 2019., 2019
To overcome the limitations of the traditional study of palaeoseismic trenches, a new workflow is presented that integrates infrared hyperspectral and photogrammetric data. This method was applied on two palaeoseismic trenches excavated across a post‐glacial fault scarp in northern Finnish Lapland.
Moritz Kirsch   +19 more
wiley   +1 more source

基于Mask-RCNN算法的复合绝缘子串红外图像分割与温度读取

open access: yesGaoya dianqi, 2021
红外成像可以快速发现复合绝缘子异常温升,从而实现缺陷检测。为了解决复合绝缘子红外检测中人工诊断时间成本高、效率低、背景干扰多的问题,文中提出了基于Mask-RCNN的温升绝缘子自动检测方法。首先使用Mask-RCNN对红外图像数据进行学习训练,进而对其中的绝缘子目标进行识别检测和图像分割。在智能分割之后,通过识别图中的温度范围数据并将绝缘子区域图像灰度与之比对,得到了绝缘子的温度信息,用于绝缘子异常发热故障的诊断。实验研究表明:在对南方某市绝缘子红外测温图像的自动识别中,Mask-RCNN有着优异的表现,
黄新宇   +5 more
doaj  

La3+ Vacancy Mediated Enhancement of Near‐Infrared Emission in Cr3+‐Activated La2MgTiO6 Phosphors for Multifunctional Applications

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian   +7 more
wiley   +1 more source

Plasmon‐Enhanced NaYF4:Yb/Er/Tm UCNPs Fluorescent Biosensing for Ultrasensitive Detection of GP73 in Clinical Liver Cancer Diagnosis

open access: yesRare 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

Covalent Aminopropyl Functionalization Tailors Ti3C2Tx MXene for High‐Performance Flexible NIR Photodetectors

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Ti3C2Tx MXene, with its exceptional electrical conductivity, mechanical flexibility, and processability, compatible with wearable and integrated systems, plays a crucial role in advancing flexible photodetectors for intelligent perception systems and bioinspired artificial vision.
Chu‐Qiao Hu   +10 more
wiley   +1 more source

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