The buildup of dust on solar panels has significantly reduced the operational lifespan and mission performance exploration rovers, traditional removal techniques have proven inadequate for Martian environment. present study proposes a novel method removing from Mars rovers using Chladni patterns, addressing persistent issue efficiency loss due to accumulation. To overcome these challenges, proposed leveraged generated by specific frequencies, effectively clear panels. We conducted...

This paper presents a model-based scheme for fault detection of blade pitch system in floating wind turbines. A is one the most critical components due to its effect on operational safety and dynamics Faults this should be detected at early stage prevent failures. To detect faults actuators sensors, an appropriate observer designed estimate states system. Residuals are generated by Kalman filter threshold based H optimization, linear matrix inequality (LMI) used residual evaluation. The...

The hepatitis C virus (HCV)-encoded NS5B protein is an RNA-dependent RNA polymerase which plays a substantial role in viral replication. We expressed and purified the recombinant of HCV genotype 3a from Esherichia coli, we investigated its ability to bind enzymatic activity. results presented here demonstrate that interacts strongly with coding region positive-strand RNA, although not sequence-specific manner. It was also determined more than two molecules bound sequentially this direction...

Abstract This paper deals with numerical modeling of the hydraulic blade pitch actuator and its effect on dynamic responses a floating spar‐type wind turbine under valve fault conditions. A concept is modeled simulated using an aero‐hydro‐servo‐elastic simulation tool (Simo‐Riflex [SR]). Because system has highest failure rate, model with/without faults developed linked to SR study effects global for different faults, magnitudes, environmental The consequence in that cannot be pitched...

The conventional proportional derivative (PD) control algorithm with appropriate gain scheduling is generally applied to a dynamic positioning (DP) system. However, finding gains through makes the DP system more complicated. A sliding-mode controls an arbitrary point, such as turret on floating production storage and offloading (FPSO) vessel. This was developed for can be FPSO vessels considering uncertainty of vessel dynamics, unknown time-varying environmental disturbances, transient...

As increasing the international community's awareness of greenhouse gas reduction, demand for eco-friendly ship fuel has accelerated recently. The fundamental aim this study is to develop a new type fully electrified ferry passengers and cars considering Korean domestic coastal environmental conditions. Several technical difficulties are encountered in applying electric propulsion system based on removable battery systems into due limitations imposed by batteries' size capacity. This paper...

<title>Abstract</title> The buildup of dust on solar panels has significantly reduced the operational lifespan and mission performance exploration rovers, traditional removal techniques have proven inadequate for Martian environment. present study proposes a novel method removing from Mars rovers using Chladni patterns, addressing persistent issue efficiency loss due to accumulation. To overcome these challenges, proposed leveraged generated by specific frequencies, effectively clear panels....

This paper presents a new design concept for ocean nuclear power plants (ONPPs) using tension leg platform (TLP). The system-integrated modular advanced reactor, which is one of the successful small reactors, mounted demonstration. authors define requirements and parameters, modularize rearrange other facilities, propose total general arrangement. most fundamental level results tendon system are provided, construction procedure safety features discussed. integrated passive developed gravity...

Near-field underwater explosion (UNDEX) phenomena were investigated by experiments and numerical simulations. The UNDEX performed in a water tank using ship-like model. One kilogram of TNT, one the most widely used military high explosives, was for experiments. Numerical simulations under same conditions as commercial software LS-DYNA. Underwater pressures, accelerations, velocities, strains shock waves measured at multiple locations. Further, bubble pulsation period whipping deformations...

The ocean environment has a significant influence on aquaculture, marine transportation, and the construction of coastal offshore structures. In this regard, we describe deep learning based wave-height classification scheme using monoscopic videos. Images videos as input for were obtained camera, wave height was measured an acoustic Doppler current profiler installed in southwestern area Korea. Initially, sea states average estimated from single snapshots only convolutional neural network...

This paper describes a recurrent neural network (RNN) for the fault classification of blade pitch system spar-type floating wind turbine. An artificial (ANN) can effectively recognize multiple faults and build training model with data decision-making. The ANN comprises an encoder decoder. uses gated unit, which is network, dimensionality reduction input data. decoder multilayer perceptron (MLP) diagnosis To create data, we use turbine simulator that enables fully coupled nonlinear...