J. L. Rodríguez-Muñoz^1,*, J. S. Pacheco-Cedeño^1,*, 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

Yue Jiang^1,2,#, Lingyu Liu^1,#, Kangyu Wang^1,2, Mingzhu Zhao^1,2, Ping Chen^1,2, Jun Lei^1,2, Yanfang Wang³, Meiping Zhang^1,2, Yi Wang^1,2,*, Guang Chen^1,*

Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 3055-3071, 2024, DOI:10.32604/phyton.2024.056384 - 30 November 2024

Abstract The main active components of ginseng are ginsenosides, which play significant roles in treating cardiovascular diseases, cancer, and providing antioxidant effects. Ginsenosides are primarily synthesized through the mevalonate pathway and the methylerythritol phosphate pathway. Many key enzyme genes involved in this biosynthetic process have been cloned and validated, yet the regulatory functions of transcription factors remain unclear. The C₂H₂-type zinc finger protein family, one of the largest families of transcription factors, is crucial in plant growth and development, response to biotic and abiotic stresses, and regulation of secondary metabolism. This study, based on the ginseng transcriptome More >

Mengyuan Li¹, Zhongye Gao^1,2, Lina Jiang¹, Leishan Chen^1,2,*, Jianhui Ma^1,*

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 >

Surajudeen Sikiru^1,*, Hassan Soleimani², Amir Rostami¹, Mohammed Falalu Hamza^1,3, Lukmon Owolabi Afolabi⁴

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.1, pp. 31-44, 2024, DOI:10.32604/fdmp.2023.029281 - 08 November 2023

Abstract Determining the adsorption of shale gas on complex surfaces remains a challenge in molecular simulation studies. Difficulties essentially stem from the need to create a realistic shale structure model in terms of mineral heterogeneity and multiplicity. Moreover, precise characterization of the competitive adsorption of hydrogen and methane in shale generally requires the experimental determination of the related adsorptive capacity. In this study, the adsorption of adsorbates, methane (CH₄), and hydrogen (H₂) on heterogeneous shale surface models of Kaolinite, Orthoclase, Muscovite, Mica, C₆₀, and Butane has been simulated in the frame of a molecular dynamic’s numerical technique. The More >

Xiaofang Kang^1,*, Jian Wu¹, Xinqi Wang¹, Shancheng Lei²

CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 551-593, 2024, DOI:10.32604/cmes.2023.029044 - 22 September 2023

Abstract In order to improve the seismic performance of adjacent buildings, two types of tuned inerter damper (TID) damping systems for adjacent buildings are proposed, which are composed of springs, inerter devices and dampers in serial or in parallel. The dynamic equations of TID adjacent building damping systems were derived, and the H₂ norm criterion was used to optimize and adjust them, so that the system had the optimum damping performance under white noise random excitation. Taking TID frequency ratio and damping ratio as optimization parameters, the optimum analytical solutions of the displacement frequency response of the… More > Graphic Abstract

Hamzeh Taha Alkasasbeh^1,*, 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 >

CHUNYANG XU^1,#, CAIYUN YANG^1,#, JINSONG ZHANG², XIAOHUA PAN³, JUN WANG⁴, LEI JIANG², HONGWEI YE^1,*, BO CHEN^1,*

BIOCELL, Vol.47, No.9, pp. 2027-2035, 2023, DOI:10.32604/biocell.2023.029277 - 28 September 2023

Abstract Background: The lung is one of the primary target organs of hydrogen sulfide (H₂S), as exposure to H₂S can cause acute lung injury (ALI) and pulmonary edema. Dexamethasone (Dex) exerts a protective effect on ALI caused by exposure to toxic gases and is commonly used in the clinic; however, the underlying mechanisms remain elusive, and the dose is unclear. Methods: In vivo experiments: divided C57BL6 mice into 6 groups at random, 12 in each group. The mice were exposed to H₂S for 3 h and 5 or 50 mg/kg Dex pretreated before exposure, sacrificed 12 h later. The… More >

Noora S. Ekab¹, Ahmed Q. Salam², Ali O. Abd³, Miqdam T. Chaichan^4,*

FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.11, pp. 2847-2861, 2023, DOI:10.32604/fdmp.2023.028874 - 18 September 2023

Abstract To improve the performances of diesel engines and to reduce the pollutants they emit, aluminum oxide nanoparticles in varying quantities (50, 100, 150 ppm) have been added to conventional diesel fuel. The results of such experimental tests have revealed that the addition of nano-Al₂O₃ particles to the diesel fuel reduces its consumption by 0.488%, 1.02%, and 1.377%, respectively and increases the brake thermal efficiency by 1.4%, 2.6%, and 3.8%, respectively. The concentrations of undesired gases decrease accordingly by 1.5%, 1.7%, and 2.8% for HC and by 5.88%, 11.7%, and 17.6%, respectively, for CO. For the same More >

MIAOMIAO LI^1,#, ZILIN ZHENG^1,#, JUNYI KE¹, JIEYI LUO¹, FAN JIANG¹, YANXIA QU¹, BING ZHU², YINGHUA LI^2,*, LIANDONG ZUO^1,*

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 >

MIAOMIAO LI^1,#, DANYANG CHEN^2,#, JUNYI KE¹, RUILIN ZHENG², JINGYAO SU², ZILIN ZHENG¹, JIEYI LUO¹, HANRAN MAI¹, FAN JIANG¹, YANXIA QU¹, XIAOQIONG GU¹, BING ZHU², YINGHUA LI^2,*, LIANDONG ZUO^1,*

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 >