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  • Open Access

    REVIEW

    The Reductive Amination of Biomass-Based Aldehydes and Alcohols towards 2,5-bis(aminomethyl)furan: Progress, Challenges and Prospects

    Li Ji1,2, Jiawei Mao1,3, Ruixiang Li1,*, Jiaqi Xu1,*

    Journal of Renewable Materials, Vol.13, No.9, pp. 1683-1706, 2025, DOI:10.32604/jrm.2025.02025-0043 - 22 September 2025

    Abstract Primary diamines play an important role in the chemical industry, where they are widely used as raw materials for the manufacture of pharmaceuticals and polymers. Currently, primary diamines are mainly derived from petroleum, while harsh or toxic conditions are often needed. Biomass is abundant and renewable , which serves as a promising alternative raw material to produce primary diamines. This review primarily focuses on the synthesis of 2,5-bis(aminomethyl)furan (BAMF), a bio-based diamine with potential as a biomonomer for polyamides and polyureas. Specifically, this review emphasizes the synthesis of BAMF from three biomass-derived alcohols and aldehydes,… More > Graphic Abstract

    The Reductive Amination of Biomass-Based Aldehydes and Alcohols towards 2,5-bis(aminomethyl)furan: Progress, Challenges and Prospects

  • Open Access

    ARTICLE

    Comparative Study on the Phenolic Compound Extraction in the Biorefinery Upgrading Process of Multi-Feedstock Biomass Waste Based Bio-Oil

    Haniif Prasetiawan1,2,*, Dewi Selvia Fardhyanti1, Hadiyanto2, Widya Fatriasari3

    Journal of Renewable Materials, Vol.13, No.7, pp. 1347-1366, 2025, DOI:10.32604/jrm.2025.02024-0070 - 22 July 2025

    Abstract Bio-oil is a renewable fuel that can be obtained from biomass waste, such as empty palm fruit bunches, sugarcane bagasse, and rice husks. Within a biorefinery framework, bio-oil had not met the standards as a fuel due to the presence of impurities like corrosive phenol. Therefore, the separation of phenol from bio-oil is essential and can be achieved using the extraction method. In this study, biomass wastes (empty fruit bunches of oil palm, sugarcane bagasse, and rice husk) were pyrolyzed in a biorefinery framework to produce bio-oil, which was then refined through liquid-liquid extraction with… More >

  • Open Access

    ARTICLE

    MRI-based PI-RADS score predicts ISUP upgrading and adverse pathology at radical prostatectomy in men with biopsy ISUP 1 prostate cancer

    Snir Dekalo1,2, Ohad Mazliah2, Eyal Barkai1,2, Yuval Bar-Yosef1,2, Haim Herzberg1,2, Tomer Bashi1,2, Ibrahim Fahoum2,3, Sophie Barnes2,4, Mario Sofer1,2, Ofer Yossepowitch1,2, Gal Keren-Paz1,2, Roy Mano1,2

    Canadian Journal of Urology, Vol.31, No.4, pp. 11955-11962, 2024

    Abstract Introduction: Most men diagnosed with very-low and low-risk prostate cancer are candidates for active surveillance; however, there is still a misclassification risk. We examined whether PI-RADS category 4 or 5 combined with ISUP 1 on prostate biopsy predicts upgrading and/ or adverse pathology at radical prostatectomy.
    Materials and methods: A total of 127 patients had ISUP 1 cancer on biopsy after multiparametric MRI (mpMRI) and then underwent radical prostatectomy. We then evaluated them for ISUP upgrading and/or adverse pathology on radical prostatectomy.
    Results: Eight-nine patients (70%) were diagnosed with PI-RADS 4 or 5 lesions. ISUP upgrading was significantly… More >

  • Open Access

    ARTICLE

    Acidic Magnetic Biocarbon-Enabled Upgrading of Biomass-Based Hexanedione into Pyrroles

    Zhimei Li1, Kuan Tian2, Keping Wang2, Zhengyi Li2, Haoli Qin1,*, Hu Li2,*

    Journal of Renewable Materials, Vol.11, No.11, pp. 3847-3865, 2023, DOI:10.32604/jrm.2023.030122 - 31 October 2023

    Abstract Sustainable acquisition of bioactive compounds from biomass-based platform molecules is a green alternative for existing CO2-emitting fossil-fuel technologies. Herein, a core–shell magnetic biocarbon catalyst functionalized with sulfonic acid (Fe3O4@SiO2@chitosan-SO3H, MBC-SO3H) was prepared to be efficient for the synthesis of various N-substituted pyrroles (up to 99% yield) from bio-based hexanedione and amines under mild conditions. The abundance of Brønsted acid sites in the MBC-SO3H ensured smooth condensation of 2,5-hexanedione with a variety of amines to produce N-substituted pyrroles. The reaction was illustrated to follow the conventional PallKnorr coupling pathway, which includes three cascade reaction steps: amination, loop closure… More > Graphic Abstract

    Acidic Magnetic Biocarbon-Enabled Upgrading of Biomass-Based Hexanedione into Pyrroles

  • Open Access

    ARTICLE

    Increasing rate of pathologic upgrading in low risk prostate cancer patients in the active surveillance era

    Facundo Davaro1, David Weinstein1, Ryan Wong1, Sameer Siddiqui1, Leslie Hinyard2, Zachary Hamilton1

    Canadian Journal of Urology, Vol.29, No.2, pp. 11059-11066, 2022

    Abstract Introduction: Management of prostate cancer has seen an increasing predilection for active surveillance in low risk (LR) patients. We aimed to evaluate the rate of pathologic upgrading in patients with very low (VLR) or LR prostate cancer after prostatectomy.
    Materials and methods: The National Cancer Database (NCDB) and the Surveillance, Epidemiology, and End Results (SEER) Database were queried for patients diagnosed with Gleason 6 prostate cancer and prostate specific antigen (PSA) < 10 ng/mL from 2010 to 2016. All patients underwent 12-core biopsy and a subsequent prostatectomy for final pathologic staging. Our primary outcome was rate of… More >

  • Open Access

    ARTICLE

    Hydroprocessing and Blending of a Biomass-Based DTG-Gasoline

    David Graf, Philipp Neuner, Reinhard Rauch*

    Energy Engineering, Vol.119, No.6, pp. 2169-2192, 2022, DOI:10.32604/ee.2022.022759 - 14 September 2022

    Abstract The number of annually registered internal-combustion vehicles still exceeds electric-driven ones in most regions, e.g., Germany. Ambitious goals are disclosed with the European Green Deal, which calls for new technical approaches and greenhouse gas neutral transition technologies. Such bridging technologies are synthetic fuels for the transportation sector, e.g., using the bioliq® process for a CO2-neutral gasoline supply. Fuels must meet the applicable national standards to be used in existing engines. Petrochemical parameters can be variably adapted to their requirements by hydroprocessing. In this work, we considered the upgrading of aromatic-rich DTG gasoline from the bioliq® process. The… More >

  • Open Access

    ARTICLE

    Fuzzy Multi-criteria Decision Making for Decision Support in Port Capacity Upgrade

    Chia-Nan Wang, Tien–Lin Chao*

    CMC-Computers, Materials & Continua, Vol.73, No.2, pp. 2485-2494, 2022, DOI:10.32604/cmc.2022.026682 - 16 June 2022

    Abstract In many port capacity upgrade projects, choosing a supplier of equipment is a complicated decision, project managers must consider many criteria to choose a supplier to ensure the project is completed on time, optimal in terms of benefit and cost. Therefore, selecting the equipment supplier in this project is a multi-criteria decision-making process. The multi-criteria decision-making (MCDM) model is applied in many fields to select the optimal solution, but there are very few studies using the MCDM model to support project managers in evaluating and selecting optimal solutions in port capacity upgrade project. In this More >

  • Open Access

    ARTICLE

    Upgrading the Quality of Solid Fuel Made from Nyamplung (Calophyllum inophyllum) Wastes Using Hydrothermal Carbonization Treatment

    Riina Syivarulli1,2, Nugroho Agung Pambudi2,*, Mochamad Syamsiro3, Lip Huat Saw4

    Energy Engineering, Vol.118, No.1, pp. 189-197, 2021, DOI:10.32604/EE.2020.010493 - 17 November 2020

    Abstract One of the major problems faced in managing biomass waste to higher quality products is choosing the right technology. Wastes are used as an alternative fuel, with increase in the calorific value. Hydrothermal carbonization (HTC) is a biomass conversion technology, used to obtain solid fuel. This study aims to utilize of Calophyllum inophyllum as an alternative solid fuel through HTC. The calorific value and proximate of the hydrochar will be determined and analyzed to find out its quality. The experiments were carried out at temperature variations of 160°C, 190°C, and 220°C and holding times of 30… More >

  • Open Access

    ARTICLE

    Histologic upgrading in patients eligible for active surveillance on saturation biopsy

    Paul H. Chung1, Oussama M. Darwish1, Claus G. Roehrborn1, Payal Kapur2, Yair Lotan1

    Canadian Journal of Urology, Vol.22, No.1, pp. 7656-7660, 2015

    Abstract Introduction:We evaluated the risk of histologic upgrading and upstaging in patients who met strict active surveillance (AS) criteria on saturation biopsy and elected to undergo radical prostatectomy.
    Materials and methods:A retrospective review was conducted of 362 consecutive, individual patients who underwent transrectal ultrasound guided saturation biopsy (32 cores) between 2006 and 2013. Thirty-one patients (9%) were eligible for AS based on Hopkins criteria for very low risk (VLR): stage T1c, prostate-specific antigen (PSA) density ≤ 0.15 ng/mL2, Gleason ≤ 6, ≤ 2 cores and ≤ 50% core. Twenty patients (64%) elected radical prostatectomy, 2 (7%) elected radiation treatment… More >

  • Open Access

    ARTICLE

    Active surveillance for prostate cancer in a veteran population

    Eugene K. Lee1, Janet Baack1, Heidi Penn1, Cecil T. Bromfield2, David A. Duchene1, J. Brantley Thrasher1, Jeffrey M. Holzbeierlein1

    Canadian Journal of Urology, Vol.17, No.6, pp. 5429-5435, 2010

    Abstract Introduction: Active surveillance for prostate cancer is a therapeutic option which is gaining more popularity. Implicit in this approach is careful monitoring to identify those with progression. Criteria for placing patients on active surveillance vary but generally include Gleason sum of 6 or less, prostate-specific antigen (PSA) less than 20, and a small volume of cancer in the biopsy specimen. We review our experience with active surveillance in a veteran population.
    Materials and methods: We conducted a retrospective review of patients from the Kansas City Veterans Affairs (KCVA) who met the requirements for active surveillance (Gleason sum… More >

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