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  • Open Access

    REVIEW

    Bamboo Parenchymal Cells: An Untapped Bio-Based Resource for Sustainable Material

    Yao Xia1, Yuxiang Huang1,*, Shifeng Zhang2, Yanglun Yu1

    Journal of Renewable Materials, Vol.13, No.10, pp. 1881-1898, 2025, DOI:10.32604/jrm.2025.02025-0068 - 22 October 2025

    Abstract Bamboo parenchymal cells (PCs) represent an underutilized resource with significant potential as a sustainable and versatile bio-based material. Despite the extensive research on bamboo fibers, PCs, comprising a considerable portion of bamboo, have been largely overlooked. This review examines the multi-scale structure of bamboo PCs, including their microcapsules, multi-wall layers, and pits, which provide the structural foundation for diverse applications. Various physical and chemical isolation methods, impacting the properties of extracted PCs, are also discussed. Notably, the review explores the promising applications of bamboo PCs, highlighting their use as filler materials in formaldehyde-free composites, as More > Graphic Abstract

    Bamboo Parenchymal Cells: An Untapped Bio-Based Resource for Sustainable Material

  • Open Access

    ARTICLE

    Study on Preparation of Lignin-Containing Nanocellulose from Bamboo Parenchyma

    Wenli Gu1, Shiyi Zeng1, Assima Dauletbek2, Bin Xu1,3,*, Xinzhou Wang1, Man Yuan1, Yanni Gu1

    Journal of Renewable Materials, Vol.10, No.2, pp. 385-399, 2022, DOI:10.32604/jrm.2022.016457 - 30 August 2021

    Abstract Bamboo vascular bundle fiber and parenchyma (BP) are separated by high-temperature treatment with saturated steam. Bamboo vascular bundle fiber is widely used in the market, but how to develop and utilize parenchyma tissue is a difficult problem. The sulfated cellulose nanofibers (ANFs) were obtained by sulfating BP with a deep eutectic solvent (DES), which provided a theoretical basis for the value-added utilization of BP. Using DES as the reaction medium and reagent, the BP was grafted with a sulfonic acid group to form a gel substance in water, ANFs and nanocellulose gel were obtained by More > Graphic Abstract

    Study on Preparation of Lignin-Containing Nanocellulose from Bamboo Parenchyma

  • Open Access

    ARTICLE

    The Arrangement and Size of Cellulose Microfibril Aggregates in the Cell Walls of Sclerenchyma Fibers and Parenchyma Tissue in Bamboo

    Wenting Ren1,3, Fei Guo2, Minghui Liu1,3, Haocheng Xu1,3, Hankun Wang1,3, Yan Yu1,2,*

    Journal of Renewable Materials, Vol.9, No.12, pp. 2291-2301, 2021, DOI:10.32604/jrm.2021.015973 - 22 June 2021

    Abstract Understanding the assembly and spatial arrangement of bamboo cell wall components is crucial for its optimal utilization. Bamboo cell walls consist of aggregates of cellulose microfibrils and matrix. In the present study, the size and arrangement of cellulose microfibril aggregates in the cell walls of sclerenchyma fibers and parenchyma cells in moso bamboo were investigated with NMR and FE-SEM. The NMR measurement showed that the characteristic sizes of the microfibril aggregates of fibers and parenchyma cells were approximately 25.8 nm and 18.8 nm, respectively. Furthermore, high-resolution SEM showed the size of microfibril aggregates varied little More >

  • Open Access

    ARTICLE

    Automatic Delineation of Lung Parenchyma Based on Multilevel Thresholding and Gaussian Mixture Modelling

    S. Gopalakrishnan1, *, A. Kandaswamy2

    CMES-Computer Modeling in Engineering & Sciences, Vol.114, No.2, pp. 141-152, 2018, DOI:10.3970/cmes.2018.114.141

    Abstract Delineation of the lung parenchyma in the thoracic Computed Tomography (CT) is an important processing step for most of the pulmonary image analysis such as lung volume extraction, lung nodule detection and pulmonary vessel segmentation. An automatic method for accurate delineation of lung parenchyma in thoracic Computed Tomography images is presented in this paper. The proposed method involves a segmentation phase followed by a lung boundary correction technique. The tissues in the thoracic Computed Tomography can be represented by a number of Gaussians. We propose a histogram utilized Adaptive Multilevel Thresholding (AMT) for estimating the More >

  • Open Access

    ARTICLE

    Is the abaxial palisade parenchyma in phyllaries of the sunflower (Helianthus annuus L.) capitulum a missing trait in modern genotypes?

    Hernández LF1,2, MV Rosetti1

    Phyton-International Journal of Experimental Botany, Vol.85, pp. 291-296, 2016, DOI:10.32604/phyton.2016.85.291

    Abstract The involucral bracts (IB or phyllaries) of the sunflower (Helianthus annuus L.) capitulum constitute an example of photosynthesizing organs that contribute to the photosynthesis budget during the generation of crop yield. The anatomy of IB was analyzed in two domesticated primitive sunflower genotypes, Havasupai and Hopi, in the sunflower line HA89B, in the wild Helianthus annuus ssp. annuus, in the sunflower male-fertile line R013 and in the commercial hybrid DKOP3845. Stomata and trichomes were counted on the adaxial and abaxial epidermis. In all cases, the IB showed a one-layered adaxial and abaxial epidermis, secretory ducts and parenchymatic cells… More >

  • Open Access

    ARTICLE

    Computed tomography based renal parenchyma volume measurements prior to renal tumor surgery are predictive of postoperative renal function

    Brian Kunzel1, William Small2, Michael Goodman3, John Pattaras1, Viraj Master1, Kenneth Ogan1

    Canadian Journal of Urology, Vol.20, No.2, pp. 6714-6720, 2013

    Abstract Introduction: To determine whether preoperative computed tomography (CT)-based renal parenchymal volume (RPV) measurements would be predictive of postoperative chronic kidney disease (CKD).
    Materials and methods: From 2005 to 2010, 189 patients with preoperative CT imaging performed at Emory University Hospital underwent renal tumor surgery. Preoperative and postoperative renal function was determined by estimating glomerular filtration rate (GFR) using standard Cockcroft-Gault (CG) and Modification of Diet in Renal Disease (MDRD) equations. Preoperative CT-measured RPV was calculated to determine the association of predicted preserved renal parenchyma with postoperative renal function and the development of CKD (GFR < 60 mL/min/1.73 m²).
    More >

  • Open Access

    ARTICLE

    Simplified approach to estimating renal function based on computerized tomography

    Krishna Ramaswamy, Tracy Marien, Alon Mass, Michael Stifelman, Ojas Shah

    Canadian Journal of Urology, Vol.20, No.4, pp. 6833-6839, 2013

    Abstract Introduction: To determine whether a simplified approach to estimate renal function based on preoperative computerized tomography (CT) imaging correlates with nuclear renography (NR) following surgical treatment of ureteropelvic junction obstruction (UPJO).
    Materials and methods: We reviewed the charts of 47 patients who underwent robotic assisted laparoscopic pyeloplasty (RALP) for UPJO who had performed preoperative and postoperative nuclear renography (NR) and preoperative CT imaging. Twenty patients satisfied our inclusion criteria. We calculated differential renal function by measuring parenchymal thickness at the upper pole, midpole and lower pole regions of the kidney on the preoperative CT. Distances were measured… More >

  • Open Access

    ARTICLE

    Partial nephrectomy without hilar control or cooling: longitudinal data over 5 years

    Anthony T. Corcoran, Matthew H. Hayn, Erin P. Gibbons, Ryan Mori, Ronald Hrebinko, Benjamin J. Davies

    Canadian Journal of Urology, Vol.16, No.5, pp. 4820-4825, 2009

    Abstract Introduction: Partial nephrectomy for the management of small renal masses has become a well accepted technique. Contemporary series have shown its safety and efficacy in well selected patients. We present our experience of partial nephrectomies exclusively without hilar control or parenchymal cooling stratified into imperative and elective patients.
    Methods: We retrospectively reviewed our experience in 124 patients who underwent partial nephrectomy between December 1995 and September 2003. Patients were followed with regular radiographic and laboratory studies at 6 months postsurgery and then annually. Renal function was followed by serum creatinine.
    Results: Of the 124 patients, 105 were performed… More >

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