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  • Open Access

    ARTICLE

    Schiff’s base of Fe3O4 @chitosan with 4,4'- diselenobisbenzaldehyde: Preparation, characterization and its catalytic activity for oxidation of sulphides

    RAFAT SABA*, MOHD. KASHIF AZIZ, GHULAM MUSTAFA, ARPIT SRIVASTAVA, SHEKHAR SRIVASTAVA*

    Journal of Polymer Materials, Vol.38, No.1-2, pp. 153-166, 2021, DOI:10.32381/JPM.2021.38.1-2.12

    Abstract We have synthesized Schiff’s base of Fe3 O4 @chitosan with 4,4'-diselenobisbenzaldehyde (Fe3O4 @CSSe) composite and used it as acatalyst for the oxidation of sulfides, having some advantageous properties such as eco-friendly, cost-effective and highly efficient magnetic biocatalyst of selenium. The synthesized schiff’s base was characterized by different physical characterization techniques such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Vibrating sample magnetometer (VSM)and Dynamic light scattering (DLS). Further, we used the resulting schiff’s base as a catalyst in the presence of a green oxidant (H2 O2 ) to oxidize sulfides to corresponding sulfoxides at room temperature. It has been… More >

  • Open Access

    ARTICLE

    Low expression of fatty acid oxidation related gene ACADM indicates poor prognosis of renal clear cell carcinoma and is related to tumor immune infiltration

    JIECHUAN QIU1, TIANMIN YANG1, YANNING SUN2, KAI SUN2, YINGKUN XU3, QINGHUA XIA1,*

    Oncology Research, Vol.32, No.3, pp. 545-561, 2024, DOI:10.32604/or.2023.030462

    Abstract This research aims to identify the key fatty acid beta-oxidation (FAO) genes that are altered in kidney renal clear cell carcinoma (KIRC) and to analyze the role of these genes in KIRC. The Gene Expression Omnibus (GEO) and FAO datasets were used to identify these key genes. Wilcoxon rank sum test was used to assess the levels of acyl-CoA dehydrogenase medium chain (ACADM) between KIRC and non-cancer samples. The logistic regression and Wilcoxon rank sum test were used to explore the association between ACADM and clinical features. The diagnostic performance of ACADM for KIRC was assessed using a diagnostic receiver… More >

  • Open Access

    REVIEW

    CPT1A in cancer: Tumorigenic roles and therapeutic implications

    SHENGJIE SONG, ZHIZHOU SHI*

    BIOCELL, Vol.47, No.10, pp. 2207-2215, 2023, DOI:10.32604/biocell.2023.027677

    Abstract Metabolic reprogramming frequently occurs in the majority of cancers, wherein fatty acid oxidation (FAO) is usually induced and serves as a compensatory mechanism to improve energy consumption. Carnitine palmitoyltransferase 1A (CPT1A) is the rate-limiting enzyme for FAO and is widely involved in tumor growth, metastasis, and chemo-/radio-resistance. This review summarizes the most recent advances in understanding the oncogenic roles and mechanisms of CPT1A in tumorigenesis, including in proliferation and tumor growth, invasion and metastasis, and the tumor microenvironment. Importantly, CPT1A has been shown to be a biomarker for diagnosis and prognosis prediction and proved to be a candidate therapeutic target,… More > Graphic Abstract

    CPT1A in cancer: Tumorigenic roles and therapeutic implications

  • Open Access

    PROCEEDINGS

    The Correlation Between the Cyclic Oxidation Behavior of EB-PVD TBC and Refurbishment Process

    Pan Li1, Xiaochao Jin1, Pin Lv1, Xueling Fan1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.010540

    Abstract Refurbishment of thermal barrier coating (TBC) has become a valuable technique to prolong the service life of high-temperature components. In this work, the effect of refurbishment process on the oxidation behaviors of TBC was investigated. Before recoating, the soft chemical stripping method was used to remove TBC from DD6 single-crystal superalloy. The results showed that a certain amount of IDZ layer with Cr-rich would be retained in the DD6 superalloy substrate after coating removal. The characteristics of the β phases change from the elongated grain shapes and a high aspect ratio in the ordinary specimens to the equiaxed shape in… More >

  • Open Access

    ARTICLE

    Multifunctional Lubricant Additive Improves Lubrication and Antioxidation Properties of Tung Oil

    Na Yao1, Haiyang Ding1,2,*, Mei Li1, Shouhai Li1,2, Lina Xu1, Xiaohua Yang1

    Journal of Renewable Materials, Vol.11, No.7, pp. 3115-3128, 2023, DOI:10.32604/jrm.2023.026823

    Abstract It is of considerable significance to develop efficient and environmentally friendly machinery lubricant additives because of the increasing depletion of petrochemical resources and severe environmental problems. Herein, we proposed a facile strategy to synthesize a multifunctional vegetable oil-based lubricant via the lignin derivative vanillin coupled to amine and diethyl phosphite to produce a lubricating additive with both extreme pressure and antioxidant properties. Compared with pure tung oil, the lubricating and antioxidant performance of tung oil is significantly improved after adding additives. Adding the 1.0 wt% additive to the tung oil reduced the friction wear coefficient and the volume, and the… More > Graphic Abstract

    Multifunctional Lubricant Additive Improves Lubrication and Antioxidation Properties of Tung Oil

  • Open Access

    REVIEW

    Fe-dependent cellular alterations of oxidative balance in aquatic organisms. Could be ferroptosis involved?

    PAULA MARIELA GONZÁLEZ1,2, JOAQUIN CABRERA1,2, SUSANA PUNTARULO1,2,*

    BIOCELL, Vol.47, No.5, pp. 1177-1189, 2023, DOI:10.32604/biocell.2023.027107

    Abstract

    The purpose of this review is to briefly summarize the central role of iron (Fe) in terms of cellular alterations of the oxidative/protective balance with special emphasis on its possible involvement in ferroptosis-dependent disruption in aquatic organisms. In ferroptotic cells or tissues, the intracellular Fe level increases; meanwhile the treatment with Fe chelators limits ferroptosis. Eukaryotic algae can assimilate Fe from the environment through several mechanisms, and aquatic animals incorporate dissolved Fe and Fe bound to both inorganic particles and organic matter. The central role of lipid peroxidation mediating ferroptosis was demonstrated in some algae where both low and high… More >

  • Open Access

    ARTICLE

    The antioxidant trolox inhibits aging and enhances prostaglandin E-2 secretion in mesenchymal stem cells

    XIAOXU ZHANG1,2, LIN ZHANG1, LIN DU3, HUIYAN SUN4, XIA ZHAO2, YANG SUN1, WEI WANG2,*, LISHENG WANG1,3,*

    BIOCELL, Vol.47, No.2, pp. 385-392, 2023, DOI:10.32604/biocell.2023.025203

    Abstract Mesenchymal stem cells (MSCs) have been widely used in regenerative medicine and clinical therapy due to their capabilities of proliferation, differentiation, and immune regulation. However, during in vitro expansion, MSCs are prone to aging, which largely limits their application. Prostaglandin E-2 (PGE-2) is a key effector secreted by MSCs to exert immunomodulatory effects. By screening the compound library for PGE-2 secretion, the antioxidant trolox was verified as a stimulator of MSCs to secrete PGE-2. The effect of antioxidant trolox on biological characteristics of MSCS, including aging, proliferation, and gene expression, was examined. The results demonstrated that trolox can resist aging,… More >

  • Open Access

    ARTICLE

    Effect of Oils on SBS Modified Asphalt: Rheological Characteristics and Oxidation Aging

    Jing Xu1,2,*, Yuquan Yao3, Kai Zhang1, Jiangang Yang2, Jie Gao2, Jian Zhou2

    Journal of Renewable Materials, Vol.11, No.3, pp. 1339-1351, 2023, DOI:10.32604/jrm.2022.023270

    Abstract This study focuses on the effect of oils on rheology and oxidation aging of Styrene-Butadiene-Styrene modified asphalt (SBSMA) in the long term, after reducing one low-temperature Performance Grade (PG) of SBSMA by incorporating oils. Two oils, including corn-based bio-oil and re-refined engine oil bottom (REOB), were selected to enhance the low-temperature performance of SBSMA. All samples were subjected to Rolling Thin Film Oven (RTFO) aging and 20-h as well as 40-h Pressure Aging Vessel (PAV20 and PAV40) aging, prior to multiple stress creep recovery (MSCR), frequency sweep and Flourier transform infrared spectroscopy (FTIR) scanning. A good high-temperature performance of oil/SBS… More >

  • Open Access

    ARTICLE

    Study on Coconut Shell Activated Carbon Temperature Swing Adsorption of Benzene and Formaldehyde

    Zhiguang Yang1,*, Gaojun Yan1,2, Xueping Liu1, Zhengyuan Feng1, Xinfeng Zhu1, Yanli Mao1, Songtao Chen1, Zhisheng Yu2, Ruimei Fan3, Linlin Shan3,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3573-3585, 2022, DOI:10.32604/jrm.2022.022031

    Abstract Adsorption can be used to recover effectively the volatile organic gases (VOCs) in the exhaust gas from factories through using an appropriate adsorption bed. Due to form a physical or chemical bond, adsorption occurs between the porous solid medium and the liquid or gas multi-component fluid mixture. The regeneration capacity of the adsorbent is as important as the adsorption capacity and it determines the economics of the adsorption system. The regeneration of adsorbent can be realized through changing the pressure or temperature of the system. Here, activated carbon samples from coconut shell were prepared and characterized. Benzene or formaldehyde in… More > Graphic Abstract

    Study on Coconut Shell Activated Carbon Temperature Swing Adsorption of Benzene and Formaldehyde

  • Open Access

    ARTICLE

    Study on the Effect of Two-Step Saturated Steam Heat Treatment Process on the Properties of Reconstituted Bamboo

    Xin Han1,4, Zhichao Lou1,3,4,*, Chenglong Yuan1,4, Xinwu Wu1,4, Jie Liu1,4, Fujin Weng2, Yanjun Li1,4,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3313-3334, 2022, DOI:10.32604/jrm.2022.021066

    Abstract With the aim of utilizing reconstituted bamboo as a carbon cycle-oriented material, the improvement of physical and mechanical properties has been actively studied to solve using problems. The saturated steam heat treatment process has been widely used in worldwide. With the development and exploration of this technology, two-step saturated steam heat treatment process appears in some practical production, that is, after a period of saturated steam heat treatment at a lower temperature, the bamboo bundles are taken out and seasoned for a period of time, and then put back into the heat tank again, and heated at a higher temperature… More >

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