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  • Open Access


    Synthesis of Novel Nanocomposite Based on Carboxymethylcellulose (CMC), Kaolin and Urea Fertilizer for Controlled Release


    Journal of Polymer Materials, Vol.37, No.1-2, pp. 1-15, 2020, DOI:10.32381/JPM.2020.37.1-2.1

    Abstract Controlled Release fertilizers (CRFs) are new generation agrochemicals which aid in decreasing environmental pollution. In the present study, novel CRF beads are synthesized by the technique of sol-gel polymerization. CMC polymer at various concentrations was used as a matrix and kaolin was used as a binder to enhance mechanical properties of the beads. The study also reveals the incorporation of Kaolin at different concentrations and optimization of the same. Fe3+ was used as a cross-linker to obtain spherical beads. Also, a study was done to optimize the cross linking time and concentration of cross linking solution. The usage of polymers… More >

  • Open Access


    Reliability Analysis of HEE Parameters via Progressive Type-II Censoring with Applications

    Heba S. Mohammed1, Mazen Nassar2,3, Refah Alotaibi1, Ahmed Elshahhat4,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.137, No.3, pp. 2761-2793, 2023, DOI:10.32604/cmes.2023.028826

    Abstract A new extended exponential lifetime model called Harris extended-exponential (HEE) distribution for data modelling with increasing and decreasing hazard rate shapes has been considered. In the reliability context, researchers prefer to use censoring plans to collect data in order to achieve a compromise between total test time and/or test sample size. So, this study considers both maximum likelihood and Bayesian estimates of the Harris extended-exponential distribution parameters and some of its reliability indices using a progressive Type-II censoring strategy. Under the premise of independent gamma priors, the Bayesian estimation is created using the squared-error and general entropy loss functions. Due… More >

  • Open Access


    An Efficient MPPT Tracking in Solar PV System with Smart Grid Enhancement Using CMCMAC Protocol

    B. Jegajothi1,*, Sundaram Arumugam2, Neeraj Kumar Shukla3, I. Kathir4, P. Yamunaa5, Monia Digra6

    Computer Systems Science and Engineering, Vol.47, No.2, pp. 2417-2437, 2023, DOI:10.32604/csse.2023.038074

    Abstract Renewable energy sources like solar, wind, and hydro are becoming increasingly popular due to the fewer negative impacts they have on the environment. Because, Since the production of renewable energy sources is still in the process of being created, photovoltaic (PV) systems are commonly utilized for installation situations that are acceptable, clean, and simple. This study presents an adaptive artificial intelligence approach that can be used for maximum power point tracking (MPPT) in solar systems with the help of an embedded controller. The adaptive method incorporates both the Whale Optimization Algorithm (WOA) and the Artificial Neural Network (ANN). The WOA… More >

  • Open Access


    Cryptanalysis of 2D-SCMCI Hyperchaotic Map Based Image Encryption Algorithm

    Mohammed S. Alshehri1, Sultan Almakdi1,*, Mimonah Al Qathrady2, Jawad Ahmad3

    Computer Systems Science and Engineering, Vol.46, No.2, pp. 2401-2414, 2023, DOI:10.32604/csse.2023.036152

    Abstract Chaos-based cryptosystems are considered a secure mode of communication due to their reliability. Chaotic maps are associated with the other domains to construct robust encryption algorithms. There exist numerous encryption schemes in the literature based on chaotic maps. This work aims to propose an attack on a recently proposed hyper-chaotic map-based cryptosystem. The core notion of the original algorithm was based on permutation and diffusion. A bit-level permutation approach was used to do the permutation row-and column-wise. The diffusion was executed in the forward and backward directions. The statistical strength of the cryptosystem has been demonstrated by extensive testing conducted… More >

  • Open Access


    Bayesian Convolution for Stochastic Epidemic Model

    Mukhsar1,*, Ansari Saleh Ahmar2, M. A. El Safty3, Hamed El-Khawaga4,5, M. El Sayed6

    Intelligent Automation & Soft Computing, Vol.34, No.2, pp. 1175-1186, 2022, DOI:10.32604/iasc.2022.025214

    Abstract Dengue Hemorrhagic Fever (DHF) is a tropical disease that always attacks densely populated urban communities. Some factors, such as environment, climate and mobility, have contributed to the spread of the disease. The Aedes aegypti mosquito is an agent of dengue virus in humans, and by inhibiting its life cycle it can reduce the spread of the dengue disease. Therefore, it is necessary to involve the dynamics of mosquito's life cycle in a model in order to obtain a reliable risk map for intervention. The aim of this study is to develop a stochastic convolution susceptible, infective, recovered-susceptible, infective (SIR-SI) model… More >

  • Open Access


    Injectable Collagen/CMC Soft Tissue Filler with Developed Flow Properties

    Reza Samanipour1, Aida Pourmostafa2, Adel Marzban2, Sara Tabatabaee3, Hasan Bahraminasab2, Amir Ali Hamidieh4, Amirhossein Tavakoli4,*

    Molecular & Cellular Biomechanics, Vol.19, No.2, pp. 97-104, 2022, DOI:10.32604/mcb.2022.019080

    Abstract Based on the remarkable demand for facial reconstitute or reshape fillers due to the dermal defects arising from specific diseases, trauma, or aging, several natural or synthetic materials have been investigated. Among the evaluated materials, decellularized dermis is one of the most biocompatible choices for the aim of skin tissue regenerative approaches. On the other hand, Carboxymethyl Cellulose (CMC), a synthetic polysaccharide, with the desirable degradability, biomechanical stability, and nontoxicity seems to be an acceptable reinforcement agent for decellularized dermis. Thus, in this research, an injectable soft tissue filler contained of human-derived decellularized collagen and CMC was fabricated. The cell-removal… More >

  • Open Access


    Process Modelling and Experimental Analysis of Optimal Specimen Selection in Organic CMCs

    P. V. Rajesh1, Kanak Kalita2,*, Xiao-Zhi Gao3

    CMC-Computers, Materials & Continua, Vol.70, No.2, pp. 2415-2433, 2022, DOI:10.32604/cmc.2022.018247

    Abstract Bone grafting is a surgical restructuring procedure of replacing broken bones and reconstructing missing bone pieces so that complex bone fractures can be repaired to avoid any serious health risk as well as permanent bone disfiguration. Normally, human bones tend to regenerate and heal completely from fracture. But it needs a small scaffold to provide the necessary space to grow. Bone implants allow a broken bone to grow seamlessly. Traditionally, non-corrosive metal alloys are used for fixing broken bones. A metal plate is fastened between two ends of broken bones to join them. However, issues like high weight, high cost,… More >

  • Open Access


    Synthesis and characterization of polymeric responsive CMC/Pectin hydrogel films loaded with Tamarix aphylla extract as potential wound dressings


    BIOCELL, Vol.45, No.5, pp. 1273-1285, 2021, DOI:10.32604/biocell.2021.015323

    Abstract The fourth most predominant overwhelming type of trauma is burn injuries worldwide. Ideal wound healing dressings help in the wound healing process in a lower time with less pain. Commonly used dry wound dressing, like absorbent gauze or absorbent cotton, possess limited therapeutic effects and require repeated use, which further exaggerates patients’ suffering. In contrast, hydrogels films present a promising alternative to improve healing by guaranteeing a moisture balance at the wound site. The aim of the current study was to synthesize Tamarix aphylla (T. aphylla) extract-loaded hydrogel film with Na-CMC and pectin and to study their wound healing properties.… More >

  • Open Access


    Parameter Estimation of Alpha Power Inverted Topp-Leone Distribution with Applications

    Gamal M. Ibrahim1, Amal S. Hassan2, Ehab M. Almetwally3,*, Hisham M. Almongy4

    Intelligent Automation & Soft Computing, Vol.29, No.2, pp. 353-371, 2021, DOI:10.32604/iasc.2021.017586

    Abstract We introduce a new two-parameter lifetime model, referred to alpha power transformed inverted Topp-Leone, derived by combining the alpha power transformation-G family with the inverted Topp-Leone distribution. Structural properties of the proposed distribution are implemented like; quantile function, residual and reversed residual life, Rényi entropy measure, moments and incomplete moments. The maximum likelihood, weighted least squares, maximum product of spacing, and Bayesian methods of estimation are considered. A simulation study is worked out to evaluate the restricted sample properties of the proposed distribution. Numerical results showed that the Bayesian estimates give more accurate results than the corresponding other estimates in… More >

  • Open Access


    Green Synthesis of Silver Nanoparticles Using Plectranthus Amboinicus Leaf Extract for Preparation of CMC/PVA Nanocomposite Film

    Nguyen Thi Thanh Thuy1,*, Le Hoang Huy1, Truong Thuy Vy1, Nguyen Thi Thanh Tam2, Bien Thi Lan Thanh1, Nguyen Thi My Lan3

    Journal of Renewable Materials, Vol.9, No.8, pp. 1393-1411, 2021, DOI:10.32604/jrm.2021.015772

    Abstract In the present study, the biogenic silver nanoparticles have been synthesized using aqueous leaf extract of Plectranthus amboinicus (PA), which acted as both reducing and stabilizing agents. The PA synthesized silver nanoparticles were blended with carboxymethyl cellulose/polyvinyl alcohol (CMC/PVA) biocomposite. The prepared AgNPs as well as the biogenic AgNPs incorporated CMC/PVA films were investigated using UV-visible spectrophotometry, Fourier-transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS), scanning electron microscope (SEM), and X–ray diffraction (XRD). The DLS results showed that biogenic AgNPs had the average particle size of 65.70 nm with polydispersity index of 0.44. The surface plasmon resonance of AgNPs, which… More > Graphic Abstract

    Green Synthesis of Silver Nanoparticles Using <i>Plectranthus Amboinicus</i> Leaf Extract for Preparation of CMC/PVA Nanocomposite Film

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