Results 31 to 40 of about 127,885 (288)

Advanced Underwater Measurement System for ROVs: Integrating Sonar and Stereo Vision for Enhanced Subsea Infrastructure Maintenance

Journal of Marine Science and Engineering
In the realm of ocean engineering and maintenance of subsea structures, accurate underwater distance quantification plays a crucial role. However, the precision of such measurements is often compromised in underwater environments due to backward ...
Jiawei Zhang, Fenglei Han, Duanfeng Han, Jianfeng Yang, Wangyuan Zhao, Hansheng Li   +5 more
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Research Progress on Spudcan Foundation of Movable Jack-Up Platforms

南方能源建设
[Objective] Movable jack-up platforms have been widely used in various types of marine engineering in recent years. With the development of engineering construction to the deep and distant sea, more complex marine environmental conditions pose ...
Jiemin ZHUANG, Hongqing WANG, Dengfeng FU, Rongkun ZHENG, Ke CHEN, Lu XU   +5 more
doaj   +1 more source

A modular plasmid toolkit applied in marine bacteria reveals functional insights during bacteria-stimulated metamorphosis

mBio, 2023
A conspicuous roadblock to studying marine bacteria for fundamental research and biotechnology is a lack of modular synthetic biology tools for their genetic manipulation.
Amanda T. Alker, Morgan V. Farrell, Alpher E. Aspiras, Tiffany L. Dunbar, Andriy Fedoriouk, Jeffrey E. Jones, Sama R. Mikhail, Gabriella Y. Salcedo, Bradley S. Moore, Nicholas J. Shikuma   +9 more
doaj   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

Advanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal, Andreas Brinkmann, Andreas Hartwig   +2 more
wiley   +1 more source

Pulse-Driven Surface Hardening and Advanced Electrospark Alloying for Maritime Applications

Journal of Marine Science and Engineering
This study examines advanced electrospark alloying (ESA) as a pulse-driven surface hardening technique for marine engineering components operating in corrosive and abrasive environments.
Oleksiy Melnyk, Oleg Onishchenko, Serhii Kurdiuk, Mykola Bulgakov, Oleksij Fomin, Václav Píštěk, Pavel Kučera   +6 more
doaj   +1 more source

Recent Progress in Oxide‐Based Na‐Ion Conductors

Advanced Engineering Materials, EarlyView.
Recent advances in oxide‐based sodium‐ion conductors are reviewed, focusing on β/β″‐alumina, NASICON‐type compounds, and Na5YSi4O12‐type (N5) silicates, together with emerging perovskite and layered oxides. Improvements in ionic conductivity, compositional tuning, and processing are highlighted.
Bowei Xun, Jian Wang, Hubertus Rainaldo Arindra, Katsuro Hayashi   +3 more
wiley   +1 more source

Frequency-Dependent Acoustic Reflection for Soil Classification in a Controlled Aquatic Environment

Applied Sciences
Seafloor soil classification is essential for marine engineering, environmental monitoring, and geological surveys. Traditional classification methods, such as physical sampling and acoustic backscatter analysis, have inherent limitations, including ...
Moshe Greenberg, Uri Kushnir, Vladimir Frid   +2 more
doaj   +1 more source

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

Advanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat, Hamidreza Enshaei, Elaine Armelin, José I. Iribarren, Antonio Mateo, Miguel Morales   +5 more
wiley   +1 more source