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  • Open Access

    REVIEW

    Significant Advancements in UAV Technology for Reliable Oil and Gas Pipeline Monitoring

    Ibrahim Akinjobi Aromoye1, Hai Hiung Lo1, Patrick Sebastian1, Ghulam E Mustafa Abro2,*, Shehu Lukman Ayinla1,3

    CMES-Computer Modeling in Engineering & Sciences, Vol.142, No.2, pp. 1155-1197, 2025, DOI:10.32604/cmes.2025.058598 - 27 January 2025

    Abstract Unmanned aerial vehicles (UAVs) technology is rapidly advancing, offering innovative solutions for various industries, including the critical task of oil and gas pipeline surveillance. However, the limited flight time of conventional UAVs presents a significant challenge to comprehensive and continuous monitoring, which is crucial for maintaining the integrity of pipeline infrastructure. This review paper evaluates methods for extending UAV flight endurance, focusing on their potential application in pipeline inspection. Through an extensive literature review, this study identifies the latest advancements in UAV technology, evaluates their effectiveness, and highlights the existing gaps in achieving prolonged flight… More > Graphic Abstract

    Significant Advancements in UAV Technology for Reliable Oil and Gas Pipeline Monitoring

  • Open Access

    REVIEW

    A Review of the Applications of Nanofluids and Related Hybrid Variants in Flat Tube Car Radiators

    Saeed Dinarvand*, Amirmohammad Abbasi, Sogol Gharsi

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.1, pp. 37-60, 2025, DOI:10.32604/fdmp.2024.057545 - 24 January 2025

    Abstract The present review explores the promising role of nanofluids and related hybrid variants in enhancing the efficiency of flat tube car radiators. As vehicles become more advanced and demand better thermal performance, traditional coolants are starting to fall short. Nanofluids, which involve tiny nanoparticles dispersed into standard cooling liquids, offer a new solution by significantly improving heat transfer capabilities. The article categorizes the different types of nanofluids (ranging from those based on metals and metal oxides to carbon materials and hybrid combinations) and examines their effects on the improvement of radiator performance. General consensus More >

  • Open Access

    ARTICLE

    Joint Feature Encoding and Task Alignment Mechanism for Emotion-Cause Pair Extraction

    Shi Li, Didi Sun*

    CMC-Computers, Materials & Continua, Vol.82, No.1, pp. 1069-1086, 2025, DOI:10.32604/cmc.2024.057349 - 03 January 2025

    Abstract With the rapid expansion of social media, analyzing emotions and their causes in texts has gained significant importance. Emotion-cause pair extraction enables the identification of causal relationships between emotions and their triggers within a text, facilitating a deeper understanding of expressed sentiments and their underlying reasons. This comprehension is crucial for making informed strategic decisions in various business and societal contexts. However, recent research approaches employing multi-task learning frameworks for modeling often face challenges such as the inability to simultaneously model extracted features and their interactions, or inconsistencies in label prediction between emotion-cause pair extraction… More >

  • Open Access

    REVIEW

    Lignan Enhancement: An Updated Review on the Significance of Lignan and Its Improved Production in Crop Plants

    Ragini Singh1, Noushina Iqbal1,*, Shahid Umar1,*, Sayeed Ahmad2

    Phyton-International Journal of Experimental Botany, Vol.93, No.12, pp. 3237-3271, 2024, DOI:10.32604/phyton.2024.057189 - 31 December 2024

    Abstract Lignans are a prominent group of phenolic compounds ubiquitously present in the plant kingdom, playing a critical role in both plant physiology and human health. Structurally they are characterized by the dimerization of two phenylpropane units to attain diverse chemical configurations that contribute to their wide range of biological activities. In plants, lignans function primarily as defense molecules, protecting against pathogens, herbivores, and environmental stressors. These compounds also participate in plant growth regulation and lignification processes. From a nutritional and medicinal perspective, lignans are valued for their significant health benefits. They act as phytoestrogens,… More >

  • Open Access

    REVIEW

    Perspectives of Vertical Axis Wind Turbines in Cluster Configurations

    Ryan Randall1, Chunmei Chen1,*, Mesfin Belayneh Ageze2,3, Muluken Temesgen Tigabu4

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.12, pp. 2657-2691, 2024, DOI:10.32604/fdmp.2024.058169 - 23 December 2024

    Abstract Vertical Axis Wind Turbines (VAWTs) offer several advantages over horizontal axis wind turbines (HAWTs), including quieter operation, ease of maintenance, and simplified construction. Surprisingly, despite the prevailing belief that HAWTs outperform VAWTs as individual units, VAWTs demonstrate higher power density when arranged in clusters. This phenomenon arises from positive wake interactions downstream of VAWTs, potentially enhancing the overall wind farm performances. In contrast, wake interactions negatively impact HAWT farms, reducing their efficiency. This paper extensively reviews the potential of VAWT clusters to increase energy output and reduce wind energy costs. A precise terminology is introduced More >

  • Open Access

    ARTICLE

    Simulations of the Boiling Process on a Porous Heater by Lattice Boltzmann Method

    Alexander Fedoseev*, Mikhail Salnikov

    Frontiers in Heat and Mass Transfer, Vol.22, No.6, pp. 1679-1694, 2024, DOI:10.32604/fhmt.2024.056999 - 19 December 2024

    Abstract In order to research the process of boiling occurring on a porous surface, a model of multiple blocks was developed. The mathematical basis of these blocks is the lattice Boltzmann method in combination with heat transfer equation. The reported complex allows one to obtain the boiling curves for various wall superheats and to find the optimal parameters of a porous heater in terms of heat transfer enhancement. The porous heater structure is specified as a skeleton of square metal heaters located in the lower part of the computational domain. The calculations were performed for the… More > Graphic Abstract

    Simulations of the Boiling Process on a Porous Heater by Lattice Boltzmann Method

  • Open Access

    PROCEEDINGS

    Optimized Design Study of Subsea Hydrothermal Closed-Loop Heat Collection System Based on Numerical Simulation

    Gaowei Yi1, Da Zhang1,2, Xinyu Liu1, Yan Li1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.3, pp. 1-3, 2024, DOI:10.32604/icces.2024.011165

    Abstract 1 Introduction
    With dwindling terrestrial energy resources, there's a societal consensus to harness clean, renewable energy. Submarine hydrothermal vents, hosting abundant and unexplored energy potentials, draw international academic scrutiny [1]. Yet, comprehensive research on exploiting their thermal energy systems remains sparse. Existing technologies persist with stability and efficiency challenges. While promising ventures in hydrothermal power generation exist, they grapple with heat loss, instability, limited capacity, and heightened damage susceptibility [2]. This study scrutinizes submarine hydrothermal vents, amalgamating terrestrial closed-loop geothermal technology to resolve challenges and enable efficient energy utilization [3]. Given the complex geology of these… More >

  • Open Access

    PROCEEDINGS

    Adaptive Quality Enhancement in Robotic Laser-Directed Energy Deposition Through Melt Pool Simulation

    Jungyeon Kim1, Lequn Chen1, Seung Ki Moon1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.012511

    Abstract Robotic Laser-Directed Energy Deposition (L-DED) offers significant advantages in terms of workplace size and kinematic flexibility for part fabrication. However, its potential is hindered by challenges such as toolpath precision and speed inconsistency compared to traditional CNC machines. These limitations critically affect melt pool dynamics, temperature consistency, and ultimately, the geometric integrity of fabricated parts, areas that are still not thoroughly understood or quantified.
    This preliminary research aims to investigate the impact of these inaccuracies on melt pool morphology and part quality, utilizing in-situ collected speed/position data with a digital twin model, notably the Eagar-Tsai… More >

  • Open Access

    ARTICLE

    EMS-Mediated Mutagenesis in Marigold Seeds and Its Effects on Seedling Growth and Physiology

    Chao Meng1,#, Ikram Ullah2,#, Wenjin Wu3, Yiping Zhang1, Ruixue Shi1, Shaodan Luo3, Cuixia Luo3, Satyabrata Nanda4, Mahmoud F. Seleiman5, Yalian Jiang1,*, Wangqi Huang1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 3029-3038, 2024, DOI:10.32604/phyton.2024.057857 - 30 November 2024

    Abstract Marigolds (Tagetes spp.) are popular horticultural plants worldwide. The current study aimed to investigate the optimal mutagenic conditions for marigold seeds using EMS (ethyl methanesulfonate) mutagenesis. Different concentrations and treatment times of EMS were applied to investigate their effects on the marigold seed germination rate, growth traits, antioxidant enzyme activities (i.e., SOD and POD), and malondialdehyde (MDA) contents. Results indicated that with increasing the EMS treatment duration and concentration, the seed germination rate and growth treatments were reduced, accompanied by elevated MDA content. In addition, SOD and POD activities initially correlated positively with the growth tratis at More >

  • Open Access

    ARTICLE

    Experimental Analyses of Flow Pattern and Heat Transfer in a Horizontally Oriented Polymer Pulsating Heat Pipe with Merged Liquid Slugs

    Zhengyuan Pei1, Yasushi Koito2,*

    Frontiers in Heat and Mass Transfer, Vol.22, No.5, pp. 1381-1397, 2024, DOI:10.32604/fhmt.2024.056624 - 30 October 2024

    Abstract Extended experiments were conducted on the oscillation characteristics of merged liquid slugs in a horizontally oriented polymer pulsating heat pipe (PHP). The PHP’s serpentine channel comprised 14 parallel channels with a width of 1.3 and a height of 1.1 . The evaporator and condenser sections were 25 and 50 long, respectively, and the adiabatic section in between was 75 mm long. Using a plastic 3D printer and semi-transparent filament made from acrylonitrile butadiene styrene, the serpentine channel was printed directly onto a thin polycarbonate sheet to form the PHP. The PHP was charged with hydrofluoroether-7100.… More >

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