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  • Open Access

    ARTICLE

    Optimal Fuzzy Tracking Synthesis for Nonlinear Discrete-Time Descriptor Systems with T-S Fuzzy Modeling Approach

    Yi-Chen Lee1, Yann-Horng Lin2, Wen-Jer Chang2,*, Muhammad Shamrooz Aslam3,*, Zi-Yao Lin2

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.2, pp. 1433-1461, 2025, DOI:10.32604/cmes.2025.064717 - 30 May 2025

    Abstract An optimal fuzzy tracking synthesis for nonlinear discrete-time descriptor systems is discussed through the Parallel Distributed Compensation (PDC) approach and the Proportional-Difference (P-D) feedback framework. Based on the Takagi-Sugeno Fuzzy Descriptor Model (T-SFDM), a nonlinear discrete-time descriptor system is represented as several linear fuzzy subsystems, which facilitates the linear P-D feedback technique and streamlines the fuzzy controller design process. Leveraging the P-D feedback fuzzy controller, the closed-loop T-SFDM can be transformed into a standard system that guarantees non-impulsiveness and causality for the nonlinear discrete-time descriptor system. In view of the disturbance problems, a passive performance… More >

  • Open Access

    ARTICLE

    Metabolomic and Transcriptomic Insights into Enhanced Paclitaxel Biosynthesis in Cultivated Taxus cuspidata

    Dandan Wang*, Jiaxin Chen, Yanwen Zhang

    Phyton-International Journal of Experimental Botany, Vol.94, No.4, pp. 1137-1158, 2025, DOI:10.32604/phyton.2025.063894 - 30 April 2025

    Abstract Taxus cuspidata, a rare species of the Taxus genus, and its wild resources are under severe threat. The development of cultivated species has become an important strategy to replace wild species. The objective of this work was to elucidate the differences in secondary metabolite accumulation, particularly in the paclitaxel biosynthesis pathway, between wild and cultivated species. This study employed liquid chromatography-tandem mass spectrometry (LC-MS/MS) and RNA sequencing (RNA-Seq) technologies to conduct integrated metabolomic and transcriptomic analyses of wild and cultivated species of T. cuspidata. The results showed that the content of paclitaxel in cultivated species was significantly higher… More >

  • Open Access

    ARTICLE

    PNSS: Unknown Face Presentation Attack Detection with Pseudo Negative Sample Synthesis

    Hongyang Wang1,2, Yichen Shi3, Jun Feng1,2,*, Zitong Yu4, Zhuofu Tao5

    CMC-Computers, Materials & Continua, Vol.83, No.2, pp. 3097-3112, 2025, DOI:10.32604/cmc.2025.061019 - 16 April 2025

    Abstract Face Presentation Attack Detection (fPAD) plays a vital role in securing face recognition systems against various presentation attacks. While supervised learning-based methods demonstrate effectiveness, they are prone to overfitting to known attack types and struggle to generalize to novel attack scenarios. Recent studies have explored formulating fPAD as an anomaly detection problem or one-class classification task, enabling the training of generalized models for unknown attack detection. However, conventional anomaly detection approaches encounter difficulties in precisely delineating the boundary between bonafide samples and unknown attacks. To address this challenge, we propose a novel framework focusing on… More >

  • Open Access

    ARTICLE

    HuLBD1 Promotes Flavonoid Biosynthesis Involved in Senescence of Hylocereus undatus by Negatively Regulating HuCHS

    Xinxin Chen1, Fuxin Li1, Jingyu Jia1, Yajing Tian1, Xin Li1,2,3,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.3, pp. 825-842, 2025, DOI:10.32604/phyton.2025.062015 - 31 March 2025

    Abstract In plants, transcription factor (TF) family LATERAL ORGAN BOUNDARIES DOMAIN (LBD) has been identified to be involved in the ripening and senescence processes of fruits. However, the function of LBD in Hylocereus undatus (Haw.) Britton & Rose (H. undatus) has not been reported yet. Through transcriptomic analysis, virus-induced gene silencing (VIGS) technology, and RT-qPCR validation, we investigated the role of the LBD TFs in the senescence of H. undatus. Transcriptomic analysis revealed that HuLBD1 is a key transcription factor of the LBD family regulating H. undatus senescence. After silencing HuLBD1, 5075 differentially expressed genes (DEGs) were identified. GSEA results showed… More >

  • Open Access

    ARTICLE

    Fabrication and Characterization of PANI/MgO NPs Composite Films for Photocatalysis Application

    Malak Khannoucha1,*, Boubekeur Boudine1, Imene Ameur1, Aouatef Dali2, Ouahiba Halimi1, Miloud Sebais1, Tahar Touam3

    Journal of Polymer Materials, Vol.42, No.1, pp. 205-220, 2025, DOI:10.32604/jpm.2025.059697 - 27 March 2025

    Abstract This work reports a soft chemistry approach for the synthesis of magnesium oxide nanoparticles (MgO) incorporated in a polyaniline (PANI) matrix to give PANI/MgO nanocomposite. Using spin coating method, three different percentages of MgO/PVC (1, 2, and 3% in wt.%) were deposited on glass substrates. These films of PANI/MgO nanocomposite were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-visible spectroscopy. The results of the XRD pattern revealed the embedding of MgO nanoparticles in the PANI matrix with cubic phase, with the average size of nanoparticles varying from 35.12 to 59.55 nm. The… More >

  • Open Access

    ARTICLE

    From Waste to Biopolymer: Synthesis of P(3HB-co-4HB) from Renewable Fish Oil

    Tatiana Volova1,2, Natalia Zhila1,2,*, Kristina Sapozhnikova1,2, Olga Menshikova1,2, Evgeniy Kiselev1,2, Alexey Sukovatyi1,2, Vladimir Volkov3, Ivan Peterson4, Natalia Ipatova1,2, Ekaterina Shishatskaya1,2

    Journal of Renewable Materials, Vol.13, No.3, pp. 413-432, 2025, DOI:10.32604/jrm.2024.058775 - 20 March 2025

    Abstract The article presents the results of a study on the possibility of synthesizing biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] from renewable waste fish oil (WFO) by the Cupriavidus necator B-10646 bacterium. For the first time, waste oil generated during the processing of Sprattus balticus in the production of sprats was used as the main carbon substrate for the synthesis of P(3HB-co-4HB), and ε-caprolactone was used as a precursor instead of the more expensive γ-butyrolactone. Samples of P(3HB-co-4HB) with a 4HB monomer content from 7.4 to 11.6 mol.% were synthesized, and values of the bacterial biomass yield and the total yield of the… More > Graphic Abstract

    From Waste to Biopolymer: Synthesis of P(3HB-<i>co</i>-4HB) from Renewable Fish Oil

  • Open Access

    REVIEW

    Biobased Biodegradable Polybutylene Succinate Polymers and Composites: Synthesis, Structure Properties and Applications—A Review

    Peter Ramashadi Makgwane1,2,*, Sudhakar Muniyasamy1,3,*, Lerato Hlekelele1, Andri Swanepoel1, Venkata Satyanarayana Sypu1, Lindani Mdlalose1, Saloshnee Naidoo1, Zamani Cele1, Arjun Maity1,4, Mohammed Balogun1, Orebotse Joseph Botlhoko5

    Journal of Renewable Materials, Vol.13, No.3, pp. 449-495, 2025, DOI:10.32604/jrm.2025.027523 - 20 March 2025

    Abstract The materialization of polybutylene succinate (PBS) belongs to the family of polyesters which are degradable and biodegradable, their biodegradability properties have attracted enormous interest for product development towards different polymer-based applications. Besides its biodegradability, PBS can be derived from petroleum and biobased monomers. At the same time, the latter is the driving factor for its growing interest in bioplastics for fully green and sustainable biobased-derived polymer products. The processes and techniques presented herein, are based on the production of biobased succinic acid monomer to PBS. However, the counterpart biobased monomer 1,4-butanediol (1,4-BDO) production has not… More > Graphic Abstract

    Biobased Biodegradable Polybutylene Succinate Polymers and Composites: Synthesis, Structure Properties and Applications—A Review

  • Open Access

    ARTICLE

    Magnetic melamine cross-linked polystyrene-alt-malic anhydride copolymer: Synthesis, characterization, paclitaxel delivery, cytotoxic effects on human ovarian and breast cancer cells

    RAZIEH MOMEN-MESGIN1, JAFAR REZAIE2,*, VAHID NEJATI1, PEYMAN NAJAFI MOGHADAM3

    Oncology Research, Vol.33, No.3, pp. 665-674, 2025, DOI:10.32604/or.2024.054487 - 28 February 2025

    Abstract Objectives: Due to systematic side effects, there is a growing interest in nanoparticle formulation of anticancer drugs. Here, we aimed to synthesize poly (styrene-alt-maleic anhydride) cross-linked by melamine (PSMA/Me) and coated with magnetite nanoparticles (MNPs) PSMA/Me/Fe3O4. In addition, we aimed to load paclitaxel (PTX) into PSMA/Me/Fe3O4 for drug delivery and anticancer investigations. Methods: Novel PSMA/Me was synthesized via free radical copolymerization, coated with Fe3O4, and then used as a transporter for PTX delivery. Fabricated copolymer was characterized using SEM, TGA, and XRD techniques. Drug release rate and loading efficiency were investigated. Human ovarian cancer cells (Skov-3) and… More >

  • Open Access

    ARTICLE

    A Perspective-Aware Cyclist Image Generation Method for Perception Development of Autonomous Vehicles

    Beike Yu1, Dafang Wang1,*, Xing Cui2, Bowen Yang1

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 2687-2702, 2025, DOI:10.32604/cmc.2024.059594 - 17 February 2025

    Abstract Realistic urban scene generation has been extensively studied for the sake of the development of autonomous vehicles. However, the research has primarily focused on the synthesis of vehicles and pedestrians, while the generation of cyclists is rarely presented due to its complexity. This paper proposes a perspective-aware and realistic cyclist generation method via object retrieval. Images, semantic maps, and depth labels of objects are first collected from existing datasets, categorized by class and perspective, and calculated by an algorithm newly designed according to imaging principles. During scene generation, objects with the desired class and perspective… More >

  • Open Access

    ARTICLE

    A Study on Polyp Dataset Expansion Algorithm Based on Improved Pix2Pix

    Ziji Xiao1, Kaibo Yang1, Mingen Zhong1,*, Kang Fan2, Jiawei Tan2, Zhiying Deng1

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 2665-2686, 2025, DOI:10.32604/cmc.2024.058345 - 17 February 2025

    Abstract The polyp dataset involves the confidentiality of medical records, so it might be difficult to obtain datasets with accurate annotations. This problem can be effectively solved by expanding the polyp data set with algorithms. The traditional polyp dataset expansion scheme usually requires the use of two models or traditional visual methods. These methods are both tedious and difficult to provide new polyp features for training data. Therefore, our research aims to efficiently generate high-quality polyp samples, so as to effectively expand the polyp dataset. In this study, we first added the attention mechanism to the… More >

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