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Search Results (17)
  • Open Access

    ARTICLE

    Experimental and Neural Network Modeling of the Thermal Behavior of an Agricultural Greenhouse Integrated with a Phase Change Material (CaCl2·6H2O)

    Abdelouahab Benseddik1,*, Djamel Daoud1, Ahmed Badji1,2, Hocine Bensaha1, Tarik Hadibi3,5, Yunfeng Wang4, Li Ming4

    Energy Engineering, Vol.122, No.12, pp. 5021-5037, 2025, DOI:10.32604/ee.2025.072991 - 27 November 2025

    Abstract In Saharan climates, greenhouses face extreme diurnal temperature fluctuations that generate thermal stress, reduce crop productivity, and hinder sustainable agricultural practices. Passive thermal storage using Phase Change Materials (PCM) is a promising solution to stabilize microclimatic conditions. This study aims to evaluate experimentally and numerically the effectiveness of PCM integration for moderating greenhouse temperature fluctuations under Saharan climatic conditions. Two identical greenhouse prototypes were constructed in Ghardaïa, Algeria: a reference greenhouse and a PCM-integrated greenhouse using calcium chloride hexahydrate (CaCl2·6H2O). Thermal performance was assessed during a five-day experimental period (7–11 May 2025) under severe ambient conditions.… More > Graphic Abstract

    Experimental and Neural Network Modeling of the Thermal Behavior of an Agricultural Greenhouse Integrated with a Phase Change Material (CaCl<sub><b>2</b></sub>·6H<sub><b>2</b></sub>O)

  • Open Access

    ARTICLE

    Vacancy-defect promoting blue LED-driven H2O2 synthesis on Zn0.4Cd0.6S without additional cocatalysts

    W. W. Lu, J. N. Ding, Z. Y. Wang, Y. C. Wei, Y. P. Chen, J. Xu*

    Chalcogenide Letters, Vol.21, No.8, pp. 631-640, 2024, DOI:10.15251/CL.2024.218.631

    Abstract Photocatalytic synthesis of hydrogen peroxide offers an effective solution to the energy crisis. The design and development of high-activity and low-cost photocatalysts are crucial for H2O2 production. In this work, Zn0.4Cd0.6S with abundant S vacancies (SV-ZCS) is developed for H2O2 photosynthesis under 405 nm LED illumination without additional cocatalysts. The S vacancies serve as photo-generated electron trap centers, effectively extending the lifetimes of photogenerated carriers and promoting the separation of photoelectric carriers. Additionally, SV-ZCS is endowed with enhanced light capture capability, enhancing the overall photocatalytic activity for H2O2 production. The results were in line with expectations, the SV-ZCS samples More >

  • Open Access

    ARTICLE

    First and Second Law Analysis of a LiBr-Water Absorption Cycle with Recovering Condensation Heat for Generation

    J. L. Rodríguez-Muñoz1,*, J. S. Pacheco-Cedeño1,*, J. F. Ituna-Yudonago2, J. J. Ramírez-Minguela3, I. J. González-Hernández4

    Frontiers in Heat and Mass Transfer, Vol.22, No.6, pp. 1719-1741, 2024, DOI:10.32604/fhmt.2024.057924 - 19 December 2024

    Abstract In conventional absorption refrigeration systems (ARS), the heat from the condenser is usually rejected by the environment in place to be used in the system, so recuperating this is a good alternative to enhance the system’s performance. For instance, in this paper, an alternative ARS in which LiBr/Water is used as a refrigerant mixture, where part of condensing heat is recovered via the solution heat recovery generator absorption cycle (HR-ARS) was energy and exergy evaluated. The influence of generator, condenser and evaporator temperatures, as well as the efficiency of the solution heat exchanger on the coefficient of… More > Graphic Abstract

    First and Second Law Analysis of a LiBr-Water Absorption Cycle with Recovering Condensation Heat for Generation

  • Open Access

    ARTICLE

    Involvement of the ABA- and H2O2-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

    Mengyuan Li1, Zhongye Gao1,2, Lina Jiang1, Leishan Chen1,2,*, Jianhui Ma1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 329-342, 2024, DOI:10.32604/phyton.2024.046976 - 27 February 2024

    Abstract Abscisic acid (ABA), hydrogen peroxide (H2O2) and ascorbate (AsA)–glutathione (GSH) cycle are widely known for their participation in various stresses. However, the relationship between ABA and H2O2 levels and the AsA–GSH cycle under drought stress in wheat has not been studied. In this study, a hydroponic experiment was conducted in wheat seedlings subjected to 15% polyethylene glycol (PEG) 6000–induced dehydration. Drought stress caused the rapid accumulation of endogenous ABA and H2O2 and significantly decreased the number of root tips compared with the control. The application of ABA significantly increased the number of root tips, whereas the application… More >

  • Open Access

    ARTICLE

    MHD (SWCNTS + MWCNTS)/H2O-Based Williamson Hybrid Nanouids Flow Past Exponential Shrinking Sheet in Porous Medium

    Hamzeh Taha Alkasasbeh1,*, Muhammad Khairul Anuar Mohamed2

    Frontiers in Heat and Mass Transfer, Vol.21, pp. 265-279, 2023, DOI:10.32604/fhmt.2023.041539 - 30 November 2023

    Abstract The present study numerically investigates the flow and heat transfer of porous Williamson hybrid nanofluid on an exponentially shrinking sheet with magnetohydrodynamic (MHD) effects. The nonlinear partial differential equations which governed the model are first reduced to a set of ordinary differential equations by using the similarity transformation. Next, the BVP4C solver is applied to solve the equations by considering the pertinent fluid parameters such as the permeability parameter, the magnetic parameter, the Williamson parameter, the nanoparticle volume fractions and the wall mass transfer parameter. The single (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) nanoparticles are More >

  • Open Access

    ARTICLE

    Inhibition of H2O2-induced TM3 cell apoptosis by oxidative stress by lentinan functionalized selenium nanoparticles through JAK2/STAT-3 and P53 pathways

    MIAOMIAO LI1,#, ZILIN ZHENG1,#, JUNYI KE1, JIEYI LUO1, FAN JIANG1, YANXIA QU1, BING ZHU2, YINGHUA LI2,*, LIANDONG ZUO1,*

    BIOCELL, Vol.47, No.6, pp. 1397-1405, 2023, DOI:10.32604/biocell.2023.027971 - 19 May 2023

    Abstract Background: Nano-selenium has been widely used in antiviral and anticancer therapy, and has the advantages of good targeting and low toxicity. For the first time, we combined male reproduction with nano-selenium to investigate its antioxidant effect. This study investigated the protective effect of lentinan functionalized selenium nanoparticles on oxidative stress injury of the hydrogen peroxide (H2O2)-induced Leydig cell line, TM3. Methods: The suitable concentration of nano-selenium treatment to promote cell proliferation was also discussed. The concentration of 4 μM could significantly promote the growth of TM3 cells. Oxidative stress damage was caused using an 800 μM concentration… More >

  • Open Access

    ARTICLE

    Inhibition of H2O2-induced apoptosis of GC2-spg cells by functionalized selenium nanoparticles with lentinan through ROS-mediated ERK/p53 signaling pathways

    MIAOMIAO LI1,#, DANYANG CHEN2,#, JUNYI KE1, RUILIN ZHENG2, JINGYAO SU2, ZILIN ZHENG1, JIEYI LUO1, HANRAN MAI1, FAN JIANG1, YANXIA QU1, XIAOQIONG GU1, BING ZHU2, YINGHUA LI2,*, LIANDONG ZUO1,*

    BIOCELL, Vol.47, No.2, pp. 401-408, 2023, DOI:10.32604/biocell.2023.025154 - 18 November 2022

    Abstract A H2O2-induced oxidative stress injury cell model was established to investigate the antioxidant effect of nano-selenium on mouse spermatocyte lines and the regulation mechanism of the expression level and activity of selenium-containing antioxidant enzymes induced by oxidative stress. A safe and effective nano-drug system of functionalized selenium-containing nanoparticles (SeNPs) was developed with lentinan (LNT) (SeNPs@LNT). Mice spermatocyte line GC2-spg cells were treated with SeNPs@LNT (1, 2, 4, 8, 16, 32 μM) for 24–72 h to evaluate the cytotoxicity of selenium. GC2-spg cells were randomly divided into the following groups: control, hydrogen peroxide (H2O2), SeNPs@LNT, and H2O2+SeNPs@LNT groups.… More >

  • Open Access

    REVIEW

    g-C3N4 Derived Materials for Photocatalytic Hydrogen Production: A Mini Review on Design Strategies

    Kai Su1,*, Shaoqi Deng1, Linxiao Li1, Qirui Qin1, Jingyu Yang1, Yan Chen2,3, Shengli Zhang1, Junming Chen1

    Journal of Renewable Materials, Vol.10, No.3, pp. 653-663, 2022, DOI:10.32604/jrm.2022.018556 - 28 September 2021

    Abstract Hydrogen production through solar energy is one of the most important pathways to meet the growing demand of renewable energy, and photocatalyst participation in solar hydrolytic hydrogen production has received great attention in recent years in terms of low cost, high efficiency, and flexible design. Particularly, g-C3N4 (Graphitic-like carbon nitride material), as a unique material, can catalyze the hydrogen production process by completing the separation and transmission of charge. The easily adjustable pore structure/surface area, dimension, band-gap modulation and defect have shown great potential for hydrogen production from water cracking. In this review, the most recent More > Graphic Abstract

    g-C<sub>3</sub>N<sub>4</sub> Derived Materials for Photocatalytic Hydrogen Production: A Mini Review on Design Strategies

  • Open Access

    ARTICLE

    CFD Analysis of the Influence of Ionic Liquids on the Performances of a Refrigeration System

    Jianghao Niu*

    FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.6, pp. 1003-1013, 2021, DOI:10.32604/fdmp.2021.015225 - 08 September 2021

    Abstract The falling film of an ionic liquid ([EMIM] [DMP] + H2O) and its effect on a refrigeration system are numerically simulated in the framework of a Volume of Fluid (VOF) method (as available in the ANSYS Fluent computational platform). The properties of the liquid film and the wall shear stress (WSS) are compared with those obtained for a potassium bromide solution. Different working conditions are considered. It is noted that the ionic liquid demonstrates a better absorption capability, with a coefficient of performance (COP) of 0.55. It is proved that the [EMIM] [DMP] + H2O ionic More >

  • Open Access

    ARTICLE

    Nanosilver-Promoted Lateral Root Development in Rice is Mediated through Hydrogen Peroxide

    Yu-Jyun Chen, Xian-Hao Yang, Yun-Yang Chao*

    Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1477-1489, 2021, DOI:10.32604/phyton.2021.015719 - 27 May 2021

    Abstract Nanosilver (10−9 m) refers to particles comprising 20–15,000 silver atoms, exhibiting high stability and specific surface area. At present, nanosilver has been used in agricultural cultivation and production. This study examined the effects of nanosilver on growth and development of rice root systems. Study results showed that fresh weight of rice belowground organs and root length both increased significantly by 5% and 25%, respectively, after rice radicles were treated with 2 ppm of nanosilver for three days. However, the H2O2 level reached its peak at 2 days from treatment, but the activities of the antioxidant enzymes… More >

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