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  • Open Access

    HOW I DO IT

    Single port robotic partial nephrectomy via a retroperitoneal approach

    Joon Yau Leong1,*, Vignesh Prasad2, Carlos J. Perez Kerkvliet1, Andrew A. Wagner3, Richard E. Link4, Mihir S. Shah1

    Canadian Journal of Urology, Vol.32, No.5, pp. 469-475, 2025, DOI:10.32604/cju.2025.066348 - 30 October 2025

    Abstract In recent years, the introduction of the Da Vinci Single Port (SP) robotic platform has opened new doors for the treatment of localized renal masses. This technology, particularly when utilized via a regionalized retroperitoneal (RP) approach, offers several distinct advantages that may improve patient recovery. These advantages include easier access to both anterior and posterior renal tumors, avoidance of the peritoneal cavity with complicating adhesions, and simplified supine positioning, potentially reducing the risk of musculoskeletal or nerve injuries. Yet, the learning curve for RP surgery remains steep due to the unfamiliarity of many surgeons with More >

  • Open Access

    ARTICLE

    Numerical Analysis of Heat and Mass Transfer in Tangent Hyperbolic Fluids Using a Two-Stage Exponential Integrator with Compact Spatial Discretization

    Mairaj Bibi1, Muhammad Shoaib Arif 2, Yasir Nawaz3, Nabil Kerdid4,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.1, pp. 537-569, 2025, DOI:10.32604/cmes.2025.070362 - 30 October 2025

    Abstract This study develops a high-order computational scheme for analyzing unsteady tangent hyperbolic fluid flow with variable thermal conductivity, thermal radiation, and coupled heat and mass transfer effects. A modified two-stage Exponential Time Integrator is introduced for temporal discretization, providing second-order accuracy in time. A compact finite difference method is employed for spatial discretization, yielding sixth-order accuracy at most grid points. The proposed framework ensures numerical stability and convergence when solving stiff, nonlinear parabolic systems arising in fluid flow and heat transfer problems. The novelty of the work lies in combining exponential integrator schemes with compact… More >

  • Open Access

    ARTICLE

    Modeling and Experimental Research of Heat and Mass Transfer during the Freeze-Drying of Porcine Aorta Considering Radially-Layered Tissue Properties

    Chao Gui1,2, Wanying Chang3, Yaping Liu1,*, Leren Tao3, Daoming Shen1, Mengyi Ge1

    Frontiers in Heat and Mass Transfer, Vol.23, No.5, pp. 1621-1637, 2025, DOI:10.32604/fhmt.2025.072268 - 31 October 2025

    Abstract Freeze-drying of structurally heterogeneous biomaterials such as porcine aorta presents considerable modeling challenges due to their inherent multilayer composition and moving sublimation interfaces. Conventional models often overlook structural anisotropy and dynamic boundary progression, while experimental determination of key parameters under cryogenic conditions remains difficult. To address these, this study develops a heat and mass transfer model incorporating a dynamic node strategy for the sublimation interface, which effectively handles continuous computational domain deformation. Additionally, specialized fixed nodes were incorporated to adapt to the multilayer structure and its spatially varying thermophysical properties. A novel non-contact gravimetric system More > Graphic Abstract

    Modeling and Experimental Research of Heat and Mass Transfer during the Freeze-Drying of Porcine Aorta Considering Radially-Layered Tissue Properties

  • Open Access

    ARTICLE

    Two-Dimensional Mathematical Modeling of Gas Hydrate Dissociation with a Nonlinear Forchheimer-Type Filtration Law

    Ahmed Bakeer1, Grigory Kazakevich2, Viktoriia Podryga3,*, Yury Poveshchenko3, Parvin Rahimly3

    Frontiers in Heat and Mass Transfer, Vol.23, No.5, pp. 1575-1593, 2025, DOI:10.32604/fhmt.2025.067097 - 31 October 2025

    Abstract The work considers the problem of gas hydrate dissociation in a porous medium using the two-term Forchheimer law, corresponding to high flow rates of reservoir fluids. Such rates can arise during the decomposition of gas hydrates, since a large amount of gas is released. Intensive emissions of gases from the earth’s interior are observed on the ocean floor. They are also associated with a large number of subvertical geological structures under the ocean floor, coming to the surface in the form of local ring funnels (pockmarks). Many similar objects have also been found on land.… More >

  • Open Access

    PROCEEDINGS

    Impact of Mass Distribution on Samara Flight

    Zhaobang Hou1, Junduo Zhang2, Yunda Li1, Yongxia Jia2, Weixi Huang2,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.2, pp. 1-1, 2025, DOI:10.32604/icces.2025.011456

    Abstract Samaras represent a unique category of fruits characterized by a seed accompanied by lightweight wing-like appendages that facilitate dispersal. Variations in structure play a crucial role in influencing the flight patterns of these seeds, shaping their reproductive strategies. To explore the mechanisms behind different samara flight behaviors, we developed an effective approach that adjusts mass distribution on a plate to replicate a range of three-dimensional flight patterns. Through this methodology, we experimentally identified and classified four distinct flight modes. Furthermore, numerical analysis of the three-dimensional vortical structures provided deeper insights into the aerodynamics underlying samara-inspired More >

  • Open Access

    ARTICLE

    Cotton Residue Biomass-Based Electrochemical Sensors: The Relation of Composition and Performance

    Anna Elisa Silva, Eduardo Thiago Formigari, João Pedro Mayer Camacho Araújo, Dagoberto de Oliveira Silva, Jürgen Andreaus, Eduardo Guilherme Cividini Neiva*

    Journal of Renewable Materials, Vol.13, No.10, pp. 1899-1912, 2025, DOI:10.32604/jrm.2025.02025-0130 - 22 October 2025

    Abstract Here, we report a comprehensive study on the characterization of cotton biomass residue, its conversion into carbon-based materials via pyrolysis, and its application as an electrochemical sensor for ascorbic acid (AA). The compositions, morphologies, and structures of the resulting materials were investigated using XRD, FTIR, TGA, SEM, and EDS. Pyrolysis was carried out in an air atmosphere at different temperatures (300°C and 400°C) and durations (1, 60, and 240 min), leading to the transformation of lignocellulosic cotton residue into carbon-based materials embedded with inorganic nanoparticles, including carbonates, sulfates, chlorates, and phosphates of potassium, calcium, and… More > Graphic Abstract

    Cotton Residue Biomass-Based Electrochemical Sensors: The Relation of Composition and Performance

  • Open Access

    REVIEW

    Biomass-Derived Carbon-Based Nanomaterials: Current Research, Trends, and Challenges

    Robyn Lesch1, Evan David Visser1, Ntalane Sello Seroka1,2,*, Lindiwe Khotseng1,*

    Journal of Renewable Materials, Vol.13, No.10, pp. 1935-1977, 2025, DOI:10.32604/jrm.2025.02025-0026 - 22 October 2025

    Abstract The review investigates the use of biomass-derived carbon as precursors for nanomaterials, acknowledging their sustainability and eco-friendliness. It examines various types of biomasses, such as agricultural residues and food byproducts, focussing on their transformation via environmentally friendly methods such as pyrolysis and hydrothermal carbonisation. Innovations in creating porous carbon nanostructures and heteroatom surface functionalisation are identified, enhancing catalytic performance. The study also explores the integration of biomass-derived carbon with nanomaterials for energy storage, catalysis, and other applications, noting the economic and environmental benefits. Despite these advantages, challenges persist in optimising synthesis methods and scaling production. More > Graphic Abstract

    Biomass-Derived Carbon-Based Nanomaterials: Current Research, Trends, and Challenges

  • Open Access

    ARTICLE

    Acetylation of Corn Stalk (Zea mays) for Its Valorization

    Jhony César Muñoz Zambrano, Douglas Alexander Bermúdez Parrales, María Antonieta Riera*

    Journal of Polymer Materials, Vol.42, No.3, pp. 837-851, 2025, DOI:10.32604/jpm.2025.067277 - 30 September 2025

    Abstract Agricultural waste is a potentially interesting resource due to the compounds present. In this study, cellulose was extracted from corn stalks (Zea mays) and subsequently converted into cellulose acetate (CA). Before the extraction process, the waste sample was characterized by pH, moisture, ash, protein content, total reducing sugars (TRS), carbohydrates, cellulose, hemicellulose, and lignin. Acid and alkaline hydrolysis were performed with different reagents, concentrations, and extraction times. Sulfuric acid (H2SO4) and acetic acid (CH3COOH) were used in the acid hydrolysis, while sodium hydroxide (NaOH) was used in the alkaline hydrolysis. Three concentrations (0.62, 1.25, 2.5)% and two… More >

  • Open Access

    ARTICLE

    Modeling and Estimating Soybean Leaf Area Index and Biomass Using Machine Learning Based on Unmanned Aerial Vehicle-Captured Multispectral Images

    Sadia Alam Shammi1,2, Yanbo Huang1,*, Weiwei Xie1,2, Gary Feng1, Haile Tewolde1, Xin Zhang3, Johnie Jenkins1, Mark Shankle4

    Phyton-International Journal of Experimental Botany, Vol.94, No.9, pp. 2745-2766, 2025, DOI:10.32604/phyton.2025.068955 - 30 September 2025

    Abstract Crop leaf area index (LAI) and biomass are two major biophysical parameters to measure crop growth and health condition. Measuring LAI and biomass in field experiments is a destructive method. Therefore, we focused on the application of unmanned aerial vehicles (UAVs) in agriculture, which is a cost and labor-efficient method. Hence, UAV-captured multispectral images were applied to monitor crop growth, identify plant bio-physical conditions, and so on. In this study, we monitored soybean crops using UAV and field experiments. This experiment was conducted at the MAFES (Mississippi Agricultural and Forestry Experiment Station) Pontotoc Ridge-Flatwoods Branch… More >

  • Open Access

    ARTICLE

    Effects of Microplastics on Growth Pattern of Pinus massoniana and Schima uperba

    Keke Zhang1,2,3, Yong Cui1,2,3, Changchang Shao1,2,3, Liqing Yang1,2,3, Yuxin Wang1,2,3, Yao Fang1,2,3, Hua Zhou4, Jie Wang1,2,3, Honglang Duan1,2,3,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.9, pp. 2855-2871, 2025, DOI:10.32604/phyton.2025.065683 - 30 September 2025

    Abstract As ubiquitous environmental contaminants, microplastics (MPs) have garnered global concern due to their persistence, bioaccumulation potential, and multifaceted threats to ecosystem health. These particles threaten terrestrial ecosystems via soil contamination; however, research on their phytotoxicity remains predominantly focused on herbaceous plants. The responses of woody plants to MPs and their interspecific differences are severely unexplored. Here, two important ecological and economical tree species in southern China, Pinus massoniana (P. massoniana) and Schima superba (S. superba), were selected to explore the ecotoxicity effects of polyethylene (PE) and polypropylene (PP) MPs (the two most abundant species in the soil) on… More >

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