Results 51 to 60 of about 8,690 (146)

Two Examples of Ocean Data Noise Reduction by Curve Fitting [PDF]

open access: yes, 2009
海洋的浩瀚和多变使其信号的获取艰苦困难,如何合理地分析海洋信号,从中尽可能多地提取有用的信息是海洋研究的关键问题之一。由于海洋遥感观测得到的数据大都具有大量的噪声,因此,采用更好的降噪方法去获取我们所需的信息显得尤其重要,本文主要针对两个海洋观测数据降噪处理的实例进行了分析和研究。 第一个实例针对一个复杂地形区的28小时走航ADCP重复测量所收集到的水深数据和DGPS的地理位置序列,提出了一种潮位信息提取算法,通过提取的潮位信息从而得到较为真实的水下地形图。算法主要分为以下几个步骤 ...
吴未华
core  

Principle and Application of Trans-Cleavage CRISPR/Cas Technology for the Detection of Foodborne Pathogenic Microorganisms [PDF]

open access: yes
Foodborne pathogenic microorganisms are a serious threat to food safety. Currently, traditional biochemical assays are facing a series of challenges in the detection of foodborne pathogens.
DAI Yongjin, SUN Jing, ZHANG Moran, LIU Yujuan, CHEN Hongzhou, LU Yingjian
core   +1 more source

Automated multivolume placental reconstruction using three‐dimensional power Doppler ultrasound and infrared camera tracking

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.
ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue   +5 more
wiley   +1 more source

Research review and innovative analysis of UAV pipeline inspection based on knowledge graphs [PDF]

open access: yes
Objective In the energy sector, pipeline inspection and monitoring provide an efficient method for detecting and addressing defects in energy pipeline transportation at an early stage, thereby ensuring the safe operation and sustainable development of ...
Hong ZHAO, Yinghan MA
core   +1 more source

A new dawn? Population baselines of snow leopards and other mammals of the Kishtwar High Altitude National Park, India 新的曙光?印度基什特瓦尔高海拔国家公园雪豹和其他哺乳动物的种群基线

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 271-280, September 2024.
The Greater Himalayas in India, of which Kishtwar High Altitude National Park (KHANP) is a part, harbours potential snow leopard habitat. We sampled three catchments within the Dachhan region of KHANP using 44 cameras and identified four unique snow leopard individuals across 14 detections in nine camera locations.
Munib Khanyari   +8 more
wiley   +1 more source

基于红外测温的零值和污秽绝缘子快速检测试验研究

open access: yesGaoya dianqi, 2015
红外测温技术具有不接触、不停运、不取样、检测速度快的优点,是绝缘子运行状态在线检测的重要方法之一。文中在绝缘子发热机理和红外热像技术的原理上,立足电力工作中零值和污秽绝缘子快速检测,分别对零值绝缘子位于绝缘子串不同位置时红外测温试验对比,以及对污秽绝缘子串与清洁串的红外测温对比,试验结果表明,当绝缘子串有严重污秽和零值绝缘子存在时,其热像表征图像发生明显的突变。此外,当零值绝缘子位于串中靠近高压端时,其热像图像显示零值绝缘子与相邻正常绝缘子平均温差最大,位于中部时与相邻正常绝缘子平均温差最小 ...
陈勇, 郭俊峰, 邬小均
doaj  

A review of underground coal fire detection technology and engineering application [PDF]

open access: yes
Underground coal fires have a serious impact on coal resources and the environment, and the accurate detection of the location of fire areas is the premise and key to carrying out coal fire control. Based on the formation process of coal fire, this paper
CAO Shilong   +3 more
core   +1 more source

Rarest of the rare: People's awareness and perceptions about the woolly flying squirrel in Uttarakhand Himalaya, Northern India 珍稀中的珍稀:人们对印度北阿坎德邦喜马拉雅地区毛绒飞鼠的认知和看法

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 281-285, September 2024.
The endangered Western woolly flying squirrel faces an uncertain future despite its rediscovery. This study in Uttarkashi, India revealed a significant knowledge gap among local communities, emphasising the need for targeted conservation education.
Hiranmoy Chetia, Murali K. Chatakonda
wiley   +1 more source

Twenty years development and prospect of rapid coal mine roadway excavation in China [PDF]

open access: yes
Coal mine excavation faces some new opportunities and challenges under the rapid development of intelligent coal mines. In order to promote intelligent tunneling rapidly and healthily, a comprehensive review about the 20 years development of rapid coal ...
Hong WANG, Mingjun CHEN, Xiaofeng ZHANG
core   +1 more source

Establishing a protected area network in Xinlong with other effective area‐based conservation measures

open access: yesConservation Biology, Volume 38, Issue 4, August 2024.
Abstract Protected areas (PAs) are pivotal to biodiversity conservation, yet their efficacy is compromised by insufficient funding and management. So‐called other effective area‐based conservation measures (OECMs) present a paradigm shift and address PA limitations.
Xing Chen   +6 more
wiley   +1 more source

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