Results 31 to 40 of about 2,665,841 (300)

Ultrasonic signal processing techniques for Pipeline: A review

open access: yesMATEC Web of Conferences, 2019
Monitoring pipeline wall is an important issue in oil and gas industries. Over time, the defect can occur in the pipeline and can impact surrounding population, environment and may result in injuries or fatalities.
Naqiuddin M. S. M   +3 more
doaj   +1 more source

Digital Image Enhancement and Noise Filtering by Use of Local Statistics

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1980
Computational techniques involving contrast enhancement and noise filtering on two-dimensional image arrays are developed based on their local mean and variance. These algorithms are nonrecursive and do not require the use of any kind of transform.
Jong-Sen Lee
semanticscholar   +1 more source

An integrated structure of air spring for ships and its strength characteristics

open access: yesScience and Engineering of Composite Materials, 2023
The increasing demand for the impact resistance of ships entails the excellent impact resistance and deformability of air spring (AS) for ships under high internal pressure.
Cheng Yuqiang   +4 more
doaj   +1 more source

Review of Lightweight Vibration Isolation Technologies for Marine Power Devices

open access: yesShock and Vibration
Vibration induced by marine power devices (MPD) transmitting to the hull structure is one of the most important factors that cause ship vibration and underwater sound radiation.
Yuanran Qiu   +4 more
doaj   +1 more source

An intelligent bearing fault diagnosis system: A review

open access: yesMATEC Web of Conferences, 2019
Rolling element bearing (REB) is a well-known component that most extensively used in the industry. They operate in extreme condition (high temperature, dirty environment) which may lead to unexpected failure after the certain operation.
Saufi S.R.   +3 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Numerical modeling techniques for noise emission of free railway wheels

open access: yesRailway Engineering Science
In this article, we consider the numerical prediction of the noise emission from a wheelset in laboratory conditions. We focus on the fluid–structure interaction leading to sound emission in the fluid domain by analyzing three different methods to ...
Linus Taenzer   +4 more
doaj   +1 more source

Geometric line-of-sight guidance law with exponential switching sliding mode control for marine vehicles’ path following

open access: yesFrontiers in Robotics and AI
Marine vehicle guidance and control technology serves as the core support for advancing marine development and enabling scientific exploration. Its accuracy, autonomy, and environmental adaptability directly determine a vehicle’s mission effectiveness in
Chengren Yuan   +11 more
doaj   +1 more source

Automated Valve Fault Detection Based on Acoustic Emission Parameters and Artificial Neural Network

open access: yesMATEC Web of Conferences, 2019
Reciprocating compressor is one of the most popular classes of machines use with wide applications in the industry. However, valve failures in this machine often results unplanned shutdown. Therefore, the effective valve fault detection technique is very
Salah M. Ali Al-Obaidi   +6 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

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