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  • Open Access

    ARTICLE

    Crude Extract of Ulva lactuca L., Spirulina platensis (Gomont) Geitler and Nostoc muscorum C. Agardh ex Bornet & Flahault for Mitigating Powdery Mildew and Improving Growth of Cucumber

    Ahmed Mahmoud Ismail1,*, Eman Said Elshewy2, Ayman Y. Ahmed3, Hossam M. Darrag4

    Phyton-International Journal of Experimental Botany, Vol.94, No.10, pp. 3023-3045, 2025, DOI:10.32604/phyton.2025.067444 - 29 October 2025

    Abstract Powdery mildew of cucumber (Cucumis sativus L.) is a destructive disease caused by Podosphaera xanthii (Castagne) U.Braun & Shishkoff. This study aimed to investigate the antifungal effect of extracts of Ulva lactuca, Spirulina platensis, and Nostoc muscorum against P. xanthii and to improve the physiological and morphological traits of cucumber under commercial greenhouse conditions. The chemical composition of the individual extracts from U. lactuca, S. platensis, and N. muscorum was analyzed utilizing High-performance Liquid Chromatography (HPLC) and Gas Chromatography/Mass spectrometry (GC/MS). Cucumber plants were sprayed twice with 5% of the crude extracts of U. lactuca, S. platensis, and N. muscorum and their mixture (U. lactuca, S. platensis, and N. muscorum).… More >

  • Open Access

    PROCEEDINGS

    Uncovering the Mechanisms by Which Hot Isostatic Pressing Improves the Mechanical Properties of LPBF Ti-6Al-4V

    ZiQi Zhao, MingYang Xu, ChaoYang Sun, PeiPei Li*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.3, pp. 1-1, 2025, DOI:10.32604/icces.2025.012382

    Abstract Hot isostatic pressing (HIP) is often utilized to obtain laser powder bed fused (LPBF) Ti-6Al-4V with good mechanical properties. To uncover the underlying mechanisms by which HIP improves the mechanical properties, several mechanisms are considered and examined against experimental data sets available in the literature. The results suggest that HIP improves mechanical properties by both reducing defect sizes below a critical threshold and altering the microstructure surrounding defects. Based on these findings, a pore healing model was developed, and optimized HIP processing parameter range (temperature, pressure, and soaking time) were proposed. Severe plastic deformation driven… More >

  • Open Access

    ARTICLE

    Thermodynamics Calculation of Reaction Synthesis Pathways for Ag-Al2O3 Powder By First-Principles Calculations

    Yuanyuan Xiong1, Tong Wu1, Lixin Sun1, Mingyu Hu2, Jie Yu1,*

    CMC-Computers, Materials & Continua, Vol.85, No.3, pp. 4473-4489, 2025, DOI:10.32604/cmc.2025.067722 - 23 October 2025

    Abstract Ag/Al2O3 powders are highly effective catalytic materials utilized in the epoxidation of ethylene to produce ethylene oxide. One of the critical challenges in this catalytic process is the stability of nano-sized Ag particles, especially during high-temperature catalysis. However, this issue can be effectively addressed through in-situ reaction synthesis. To gain a deeper understanding of the underlying mechanisms, the phase transformation process and the thermodynamic mechanism of the oxidation reaction in the Ag/Al2O3 system have been investigated using first-principles thermodynamic calculations in conjunction with traditional thermodynamic data. These calculations, whose accuracy has been verified, provide valuable insights into… More >

  • Open Access

    ARTICLE

    Prediction and Validation of Mechanical Properties of Areca catechu/Tamarindus indica Fruit Fiber with Nano Coconut Shell Powder Reinforced Hybrid Composites

    Jeyapaul Angel Ida Chellam1, Bright Brailson Mansingh2, Daniel Stalin Alex3, Joseph Selvi Binoj4,*

    Journal of Polymer Materials, Vol.42, No.3, pp. 773-794, 2025, DOI:10.32604/jpm.2025.069295 - 30 September 2025

    Abstract Machine learning models can predict material properties quickly and accurately at a low computational cost. This study generated novel hybridized nanocomposites with unsaturated polyester resin as the matrix and Areca fruit husk fiber (AFHF), tamarind fruit fiber (TFF), and nano-sized coconut shell powder (NCSP). It is challenging to determine the optimal proportion of raw materials in this composite to achieve maximum mechanical properties. This task was accomplished with the help of ML techniques in this study. The tensile strength of the hybridized nanocomposite was increased by 134.06% compared to the neat unsaturated polyester resin at… More >

  • Open Access

    PROCEEDINGS

    External Field Induced High Speed Sintering of Polyurethane Covalent Adaptable Network

    Lingyao Zhou, Ling Zhang, Qifan Zhao, Zhanhua Wang, Xili Lu, Guoxia Fei, Lirong He*, Hesheng Xia*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.012861

    Abstract Powder based high speed sintering (HSS) improves the printing efficiency compared to SLS printing. The shortened layer time for HSS requires quick melting and solidification of powders, which is a big challenge for traditional printing powders materials, especially the viscous elastomers. Herein, a dynamic cross-linked polyurethane containing Diels-Alder bonds (PUDA) was synthesized at kilo scale and used for HSS. The incorporation of dynamic DA bonds into PU enables the dissociation of the polymer chain under IR light heating, and will lead to fast relaxation, diffusion and dis/re-entanglement, addressing the problem of incomplete sintering and weak… More >

  • Open Access

    ARTICLE

    Iron Modified Opuntia ficus-indica Cladode Powder as a Novel Adsorbent for Dyes Molecules

    Mehrzia Krimi1,*, Nabil Nasri1, Alma Jandoubi1, Sami Boufi2, Rached Ben Hassen1

    Journal of Renewable Materials, Vol.13, No.8, pp. 1623-1644, 2025, DOI:10.32604/jrm.2025.02025-0023 - 22 August 2025

    Abstract In this study, Opuntia ficus-indica cladode powder (OFIC), locally sourced from Rabta in Tunis, was utilized as a novel, eco-friendly adsorbent in both raw and iron(III) chloride-modified forms. The presence of iron in the modified material was confirmed by X-ray fluorescence spectroscopy (XRF). The neat and modified biomass were characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM), and their usefulness as adsorbent for cationic Neutral Red (NR) and anionic Congo Red (CR) dyes were explored under batch conditions. Equilibrium studies revealed that the iron-modified Fe(OH)x@Cellulose adsorbent exhibited… More > Graphic Abstract

    Iron Modified <i>Opuntia ficus-indica</i> Cladode Powder as a Novel Adsorbent for Dyes Molecules

  • Open Access

    ARTICLE

    Tailored Phosphate Glass Powders for Augmented Flame Retardancy and Ceramicization in Silicone Rubber

    Yanbei Hou1,2, Xu Chang1, Shuming Liu1, Huimin Zhang3, Jianwei Fu3, Jianbin Wu3, Zhiyong Li3, Guoqiang Tang3, Weizhao Hu1,*

    Journal of Polymer Materials, Vol.42, No.2, pp. 531-548, 2025, DOI:10.32604/jpm.2025.065040 - 14 July 2025

    Abstract Silicone rubber (SR) exhibits superior breathability and high-temperature resistance. However, SR is prone to degradation under extreme heat or combustion, limiting its effectiveness in mitigating secondary hazards. In this study, phosphate glass powder was used to calcinate zinc borate, lanthanum oxide, and cerium oxide. Methylphenyl polysiloxane was then grafted onto the surface of the glass powder, resulting in the modified powders designated as Methylphenyl polysiloxane-grafted zinc borate-modified phosphate glass powder (GF-ZnBM), Methylphenyl polysiloxane-grafted lanthanum oxide-modified phosphate glass powder (GF-LaM), and Methylphenyl polysiloxane-grafted cerium oxide-modified phosphate glass powder (GF-CeM). The modified powders were subsequently incorporated into… More > Graphic Abstract

    Tailored Phosphate Glass Powders for Augmented Flame Retardancy and Ceramicization in Silicone Rubber

  • Open Access

    ARTICLE

    Development of Flame Retardant Composite Based on Glucose-Citric Acid-Based Resin Reinforced by Walnut Shell Powder

    Zhenzhou Wang1, Rui Luo1, Wenqing Yang1, Seng Hua Lee2,*, Wei Chen Lum3, Longjiang Liu4, Xiaojian Zhou1, Jun Zhang1,*

    Journal of Renewable Materials, Vol.13, No.6, pp. 1229-1249, 2025, DOI:10.32604/jrm.2025.02024-0073 - 23 June 2025

    Abstract Highly flame-retardant bio-based composites were prepared in this study. Firstly, glucose-citric acid (GC) resin was synthesized through the interaction of glucose and citric acid derived from agricultural and forestry sources. Polyvinyl alcohol (PVA) served as a toughening agent, whereas walnut shell powder (WSP) functioned as a filler in the formulation of a thermosetting bio-based GC-PVA-WSP (GCPW) composite with GC resin. The findings demonstrated that boric acid increased the limited oxygen index (LOI) value of GCPW to 33%, while simultaneously diminishing its total smoke production (TSP) by 99.9%, and achieving a flame retardant index (FRI) of More > Graphic Abstract

    Development of Flame Retardant Composite Based on Glucose-Citric Acid-Based Resin Reinforced by Walnut Shell Powder

  • Open Access

    ARTICLE

    Artificial Neural Networks for Optimizing Alumina Al2O3 Particle and Droplet Behavior in 12kK Ar-H2 Atmospheric Plasma Spraying

    Ridha Djebali1,*, Bernard Pateyron2, Mokhtar Ferhi1, Mohamed Ouerhani3, Karim Khemiri1, Montassar Najari1, M. Ammar Abbassi4, Chohdi Amri5, Ridha Ennetta6, Zied Driss7

    Frontiers in Heat and Mass Transfer, Vol.23, No.2, pp. 441-461, 2025, DOI:10.32604/fhmt.2025.063375 - 25 April 2025

    Abstract This paper investigates the application of Direct Current Atmospheric Plasma Spraying (DC-APS) as a versatile thermal spray technique for the application of coatings with tailored properties to various substrates. The process uses a high-speed, high-temperature plasma jet to melt and propel the feedstock powder particles, making it particularly useful for improving the performance and durability of components in renewable energy systems such as solar cells, wind turbines, and fuel cells. The integration of nanostructured alumina (Al2O3) thin films into multilayer coatings is considered a promising advancement that improves mechanical strength, thermal stability, and environmental resistance. The More >

  • Open Access

    ARTICLE

    Evaluation of Some Egyptian Barley Cultivars Resistance to Foliar Fungal Diseases in Drought-Prone Environments under Field Conditions

    Sally Negm1, Badwy Mohdly2, Motrih Al-Mutiry3, Wael Shehata4, Karima Ahmed5, Mohamed Abou-Zeid2,*, Rana Elessawy6, Ashgan Abdel-Azim5, Amr Abdel-Fattah2, Amani Omar Abuzaid7, Enas A. Almanzalawi7, Tahani M. Alqahtani7, Shouaa A. Alrobaish8, Diaa Abd El Moneim9, Ahmed M. Abbas10,11, Mohammed O. Alshaharni10, Huda Alghamdi10, Shaimaa G. Salama12, Kairy Amer5

    Phyton-International Journal of Experimental Botany, Vol.94, No.2, pp. 347-377, 2025, DOI:10.32604/phyton.2025.057448 - 06 March 2025

    Abstract Barley (Hordeum vulgare L.) is a significant global crop that thrives in various climatic and drought-stress conditions. Furthermore, increased drought intervals and more significant weather variability resulting from climate change can affect the severity of plant diseases. Therefore, two primary objectives of integrated disease management regarding climate change are identifying cultivars resistant to foliar diseases and understanding disease progression under abiotic stress. In the current study, we assessed the quantitative foliar disease resistance of 17 commercial barley cultivars under both normal and water stress conditions over two growing seasons (from 2020/21 to 2021/22). The findings demonstrated… More >

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