The active sites on chitosan include the amine and hydroxyl groups. As a result, chitosan derivatives have been synthesized and applied to inhibit metals and alloys in in aggressive environments. One of the modifications involves the formation of…
Category: Engineering
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A discrete element simulation study of paver screed and hot mix asphalt interaction
The evaluation of the full-scale simulation is carried out mostly qualitatively and includes the analysis of the flow behavior, the force distribution, the grain orientation and the development of the densities during paving with the paver…
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Exploiting tethered and untethered UAVs: a hybrid aerial communication system
With rapid advancements in electronics and communication, UAVs, or drones, have seen extensive use in recent decades. They offer high maneuverability, low cost, mobility, quick deployment, and flexibility. These features make them valuable in…
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Experimental and numerical simulation research on the mechanical properties and failure characteristics of joint limestone under triaxial compression
Influence of joint connectivity
The stress‒strain curves of the limestone samples with different joint connectivity rates are shown in Fig. 2. Notably, affected by the condition of the test instrument, the initial stress was corrected during…
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An optimized shunt active power filter using the golden Jackal optimizer for power quality improvement
Amini, B., Rastegar, H. & Pichan, M. An optimized proportional resonant current controller based genetic algorithm for enhancing shunt active power filter performance. Int. J. Electr. Power Energy Syst. 156, 109738 (2024).
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Deriving analytical solutions using symbolic matrix structural analysis for continuous beams
The Finite Element Method (FEM), which recently marked its 80th anniversary since its inception Liu, Li1, has been a foundational tool in structural analysis, offering a robust numerical framework for solving complex engineering problems2….
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Algorithm for investigating risk analysis and factors affecting suicidal attempts under uncertainty
Evaluating the risk analysis concerning suicidal attempts, along with the identification of risks under conditions of uncertainty, is significant for planning effective prevention measures. That is the goal of assessment of risk factors: knowing…
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An innovative methodology in analyzing certain pendulum oscillators
Suppose a SP as shown in Fig. 9. At the hinge \(O\), there is a spiral spring with a constant of spring \(c_{2}\). It resists the rotation of the light rod \(OM.\) A small ball \(M\) is connected in the end of the pendulum. It moves in a liquid
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Optimization of the gantry drive through dynamic testing and comparison with the crankset in a pilot study
The research used a dynamic test stand used in previous analogous studies aimed at optimizing the position of the seat in relation to the crankset8. All research methods were the same in order to be able to compare the gantry drive with crankset…
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Coupling analysis of multiple risk factors in deep foundation pit construction of metro station based on the N-K/SNA model
Risk coupling refers to the phenomenon in which risk factors within a system interact and reinforce one another, resulting in changes in the system’s stability and risk levels. The risk system in deep foundation pit construction for metro…
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