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  • Open Access

    ARTICLE

    Experimental Study of Hydraulic–Natural Fracture Interactions under Variable Geomechanical Conditions in Deep Shale of the Southern Sichuan Basin

    Bo Zeng1, Junfeng Li1, Liqing Chen1, Qiyong Gou1, Hao Luo2, Haiyan Zhu2, Xuanhe Tang2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.2, 2026, DOI:10.32604/fdmp.2026.069978 - 04 March 2026

    Abstract Deep shale gas reservoirs in the southern Sichuan Basin are typically characterized by significant horizontal stress anisotropy (expressed as stress difference), variable brittleness–ductility in rock mechanics, and strong heterogeneity. These complex geomechanical conditions lead to pronounced differences in hydraulic fracturing outcomes among wells and sections. To investigate hydraulic fracture propagation and fracturing fluid injection behavior under varying geomechanical settings, true triaxial physical simulation tests were performed on 400 × 400 × 400 mm artificial rock samples. The samples were designed with different media properties based on similarity criteria. A sensitivity analysis was conducted to assess… More >

  • Open Access

    ARTICLE

    Prolonged survival and risk factors for reintervention after inflatable penile prosthesis implantation

    Skander Zouari1,*, Flora Barthe1, Arnoult Morrone1, Lionel Mendel2, Imad Bentellis2, Louis Vignot1, Romain Haider1, Younes Ahallal1, Daniel Chevallier1, Matthieu Durand1,3

    Canadian Journal of Urology, Vol.33, No.1, pp. 173-184, 2026, DOI:10.32604/cju.2025.064281 - 28 February 2026

    Abstract Background: Inflatable Penile Prosthesis (IPP) is the treatment for erectile dysfunction (ED) refractory to pharmacological therapies. Long-term data on factors associated with prosthesis survival remain unclear. This study aimed to analyze the long-term survival of penile prostheses and identify risk factors associated with survival without reintervention. Methods: This is a retrospective, single-center study of patients who underwent IPP implantation between January 2014 and December 2022. Preoperative data related to the patient and the etiology of ED, as well as perioperative data, were collected. The primary outcome was survival without reintervention, defined as prosthesis revision or… More >

  • Open Access

    ARTICLE

    Improved Performance and Compost Biodegradation of PLA/PBAT Blend and PLA/PBAT Compatibilized Blends with Algae as a Reinforcer

    John Letwaba1, Sudhakar Muniyasamy2,3,*, Nagarethinam Rakku1, Lucey Mavhungu1

    Journal of Renewable Materials, Vol.14, No.2, 2026, DOI:10.32604/jrm.2025.02025-0132 - 25 February 2026

    Abstract Melt blending of biodegradable polyesters such as poly (lactic acid) (PLA) and poly (butylene adipate co-terephthalate) (PBAT) with a compatibilizer and natural filler offers a chance to develop biodegradable bio-composites with improved performance. In this study, we examined how PLA/PBAT blends behave during ultimate biodegradation (mineralization), both with and without compatibilizer and algae as a reinforcement, under controlled composting conditions using carbon dioxide (CO2) respirometry techniques. Throughout the biodegradation process, the disintegration behaviour, thermal, chemical, and morphological properties of test samples before and after biodegradation were analyzed using FTIR, TGA, DSC, and SEM techniques. The results… More > Graphic Abstract

    Improved Performance and Compost Biodegradation of PLA/PBAT Blend and PLA/PBAT Compatibilized Blends with Algae as a Reinforcer

  • Open Access

    ARTICLE

    Experimental and Numerical Analysis on Mechanical Behaviors of Negative Poisson’s Ratio Metamaterials

    Zeyu Han, Chengbei He, Liang Wang*

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.2, 2026, DOI:10.32604/cmes.2026.076299 - 26 February 2026

    Abstract Negative Poisson’s ratio materials and structures exhibit lateral expansion under tensile loading, demonstrating significant mechanical advantages over conventional materials. This study systematically investigated three typical two-dimensional negative Poisson’s ratio metamaterial structures (Concave honeycomb, Anti-chiral, and Anti-chiral concave honeycomb hybrid structures) through both experimental tests and numerical analysis. The test specimens were fabricated using selective laser melting (SLM) additive manufacturing technology, and the experimental test was conducted with the use of a DIC strain measurement system. The numerical studies were performed considering both static tensile loading and dynamic impact loading with different strain rates. The deformation More >

  • Open Access

    ARTICLE

    Automated Machine Learning for Fault Diagnosis Using Multimodal Mel-Spectrogram and Vibration Data

    Zehao Li1, Xuting Zhang1, Hongqi Lin1, Wu Qin2, Junyu Qi3, Zhuyun Chen1,*, Qiang Liu1,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.2, 2026, DOI:10.32604/cmes.2026.075436 - 26 February 2026

    Abstract To ensure the safe and stable operation of rotating machinery, intelligent fault diagnosis methods hold significant research value. However, existing diagnostic approaches largely rely on manual feature extraction and expert experience, which limits their adaptability under variable operating conditions and strong noise environments, severely affecting the generalization capability of diagnostic models. To address this issue, this study proposes a multimodal fusion fault diagnosis framework based on Mel-spectrograms and automated machine learning (AutoML). The framework first extracts fault-sensitive Mel time–frequency features from acoustic signals and fuses them with statistical features of vibration signals to construct complementary More >

  • Open Access

    ARTICLE

    Mechanical Analysis of Free-Standing Cold-Water Pipe for Ocean Thermal Energy Conversion

    Jing Li1, Bo Ning1,*, Bo Li2, Xuemei Jin1, Dezhi Qiu1, Fenlan Ou1

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.1, 2026, DOI:10.32604/fdmp.2026.074335 - 06 February 2026

    Abstract As a controllable power generation method requiring no energy storage, Ocean Thermal Energy Conversion (OTEC) technology demonstrates characteristics of abundant reserves, low pollution, and round-the-clock stable operation. The free-standing cold-water pipe (CWP) in the system withstands various complex loads during operation, posing potential failure risks. To reveal the deformation and stress mechanisms of OTEC CWPs, this study first analyzes wave particle velocity and acceleration to determine wave loads at different water depths. Based on the Euler-Bernoulli beam model, a quasi-static load calculation model for OTEC CWPs was established. The governing equations were discretized using the… More >

  • Open Access

    ARTICLE

    Mechanically Stable, Thermodynamic, Photo-Catalytic and Ferromagnetic Characteristic of Ferrites Al2Mn(S/Se)4 for Energy Storage Applications: DFT-Calculations

    Hosam O. Elansary1, Naveed A. Noor2, Syed M. Ahmad3, Humza Riaz3, Sohail Mumtaz4,*

    Chalcogenide Letters, Vol.23, No.1, 2026, DOI:10.32604/cl.2026.076592 - 26 January 2026

    Abstract Ferrites are remarkable compounds for energy harvesting and spintronic applications. For this purpose, mechanically stable, thermodynamic, photo-catalytic, and ferromagnetic characteristics of ferrites Al2Mn(S/Se)4 have been investigated significantly using PBEsol-GGA and modified Becke Johnson potential (TB-mBJ). In order to determine structural stability, we calculate formation energy (Ef) and Born stability criteria that confirm the structural stability of the Al2Mn(S/Se)4. 2D and 3D plots of Poisson’s ratio (υ) and linear compressibility are also used to indicate the stability of these materials. Additionally, thermodynamic characteristics reveal that both ferrites are stable. Spin-polarized electronic properties indicate that both ferrites are ferromagnetic More >

  • Open Access

    ARTICLE

    Sustainable Particleboards Based on Sugarcane Bagasse and Bonded with a Waste-Grown Black Soldier Fly Larvae Commercial Flour-Based Adhesive: Rheological, Physical, and Mechanical Properties

    Francisco Daniel García1,2, Solange Nicole Aigner1,2, Natalia Raffaeli3, Antonio José Barotto3, Eleana Spavento3, Mariano Martín Escobar1,4, Marcela Angela Mansilla1,4, Alejandro Bacigalupe1,4,*

    Journal of Renewable Materials, Vol.14, No.1, 2026, DOI:10.32604/jrm.2025.02025-0181 - 23 January 2026

    Abstract This study explores the use of black soldier fly larvae protein as a bio-based adhesive to produce particleboards from sugarcane bagasse. A comprehensive evaluation was conducted, including rheological characterization of the adhesive and physical–mechanical testing of the panels according to European standards. The black soldier fly larvae-based adhesive exhibited gel-like viscoelastic behavior, rapid partial structural recovery after shear, and favorable application properties. Particleboards manufactured with this adhesive and sugarcane bagasse achieved promising mechanical performance, with modulus of rupture and modulus of elasticity values of 30.2 and 3500 MPa, respectively. Internal bond strength exceeded 0.4 MPa,… More > Graphic Abstract

    Sustainable Particleboards Based on Sugarcane Bagasse and Bonded with a Waste-Grown Black Soldier Fly Larvae Commercial Flour-Based Adhesive: Rheological, Physical, and Mechanical Properties

  • Open Access

    REVIEW

    Thermal Insulation Performance of Natural Fibre-Reinforced Composites—A Comprehensive Review

    Raviduth Ramful*

    Journal of Renewable Materials, Vol.14, No.1, 2026, DOI:10.32604/jrm.2025.02025-0116 - 23 January 2026

    Abstract Typically used thermal insulation materials such as foam insulation and fibreglass may pose notable health risks and environmental impacts thereby resulting in respiratory irritation and waste disposal issues, respectively. While these materials are affordable and display good thermal insulation, their unsustainable traits pertaining to an intensive manufacturing process and poor disposability are major concerns. Alternative insulation materials with enhanced sustainable characteristics are therefore being explored, and one type of material which has gained notable attention owing to its low carbon footprint and low thermal conductivity is natural fibre. Among the few review studies conducted on… More > Graphic Abstract

    Thermal Insulation Performance of Natural Fibre-Reinforced Composites—A Comprehensive Review

  • Open Access

    ARTICLE

    Numerical Investigation of Porosity and Aggregate Volume Ratio Effects on the Mechanical Behavior of Lightweight Aggregate Concrete

    Safwan Al-sayed1, Xi Wang1, Yijiang Peng1,*, Esraa Hyarat2, Ahmad Ali AlZubi3

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.074068 - 12 January 2026

    Abstract In modern construction, Lightweight Aggregate Concrete (LWAC) has been recognized as a vital material of concern because of its unique properties, such as reduced density and improved thermal insulation. Despite the extensive knowledge regarding its macroscopic properties, there is a wide knowledge gap in understanding the influence of microscale parameters like aggregate porosity and volume ratio on the mechanical response of LWAC. This study aims to bridge this knowledge gap, spurred by the need to enhance the predictability and applicability of LWAC in various construction environments. With the help of advanced numerical methods, including the… More >

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