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  • Open Access

    ARTICLE

    The Impact of Sleep Determination on Procrastination before Bedtime: The Role of Anxiety

    Na Liu1, Junxiu Wang2,3, Wanli Zang4,*

    International Journal of Mental Health Promotion, Vol.26, No.5, pp. 377-387, 2024, DOI:10.32604/ijmhp.2024.047808 - 30 May 2024

    Abstract Objective: The importance of good sleep for energy recovery and overall physical and mental health cannot be overstated. However, the increasing competitiveness of society, diversifying lifestyles, and the rapid spread of the internet and electronic devices have significantly impacted people’s sleep patterns, particularly through bedtime procrastination. Therefore, this study aims to investigate the relationship and underlying mechanisms between sleep determination, anxiety, and bedtime procrastination among the Chinese population. Method: The study utilized data from a national survey—the China Residents’ Sleep Condition Survey (November 2021, with 6,037 participants). By constructing mediation and moderation models, it analyzed the… More >

  • Open Access

    ARTICLE

    Experimental Study on Gas Flow Uniformity in a Diesel Particulate Filter Carrier

    Zhengyong Wang1, Jianhua Zhang2, Guoliang Su3, Peixing Yang4, Xiantao Fan4, Shuzhan Bai1, Ke Sun1,*, Guihua Wang1,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.1, pp. 193-204, 2024, DOI:10.32604/fdmp.2023.030561 - 08 November 2023

    Abstract A Diesel Particulate Filter (DPF) is a critical device for diesel engine exhaust products treatment. When using active-regeneration purification methods, on the one hand, a spatially irregular gas flow can produce relatively high local temperatures, potentially resulting in damage to the carrier; On the other hand, the internal temperature field can also undergo significant changes contributing to increase this risk. This study explores the gas flow uniformity in a DPF carrier and the related temperature behavior under drop-to-idle (DTI) condition by means of bench tests. It is shown that the considered silicon carbide carrier exhibits… More >

  • Open Access

    ARTICLE

    Effect of Putrescine on Low-Temperature Acclimation in Chlamydomonas reinhardtii

    Muslum S. Inal1,2, Dilek Unal1,*, Bengu Turkyilmaz Unal3,*, Munir Ozturk4

    Phyton-International Journal of Experimental Botany, Vol.91, No.3, pp. 583-598, 2022, DOI:10.32604/phyton.2022.018223 - 26 October 2021

    Abstract Putrescine is reported to be necessary for cold acclimation under low-temperature stress. In this study, the effect of low-temperature on some physiological and biochemical parameters has been investigated using the green algae Chlamydomonas reinhardtii. The lipid peroxidation rate, amount of Rubisco protein, activities of antioxidant enzymes and gene expression of polyamine biosynthesis (odc2, and spd1), heat shock proteins (hsp70c, hsp90a, and hsp90c), and PSII repair mechanisms (psba, rep27, and tba1) were determined to understand the low-temperature response. Exogenous putrescine application significantly increased Rubisco protein concentration and catalase enzyme activities under low-temperature stress. Moreover, real-time RT-PCR results and gene expression analysis… More >

  • Open Access

    ARTICLE

    Heterologous expression of bacteriocin E-760 in Chlamydomonas reinhardtii and functional analysis

    Quezada-Rivera JJ1, RE Soria-Guerra2, FS Pérez-Juárez2, L Martínez-González2, SE Valdés- Rodríguez3, NL Vasco-Méndez1, JF Morales-Domínguez1

    Phyton-International Journal of Experimental Botany, Vol.88, No.1, pp. 25-35, 2019, DOI:10.32604/phyton.2019.04549

    Abstract The use of antimicrobial peptides (AMPs) synthesized by bacteria (bacteriocins) is an alternative for combating multidrug resistant bacterial strains and their production by recombinant route is a viable option for their mass production. The bacteriocin E-760 isolated from the genus Enterococcus sp. has been shown to possess inhibitory activity against Gram-negative and Gram-positive bacteria. In this study, the expression of a chimeric protein coding for E-760 in the nucleus of C. reinhardtii was evaluated, as well as, its antibacterial activity. The synthetic gene E-760S was inserted into the genome of C. reinhardtii using Agrobacterium tumefaciens.… More >

  • Open Access

    ARTICLE

    Intraspecific variability and nitrogen effects on dry fruit yield in Karwinskia parvifolia Rose

    Luján-Rangel R1, E Olivares-Sáenz2, RE Vázquez-Alvarado2, L Garza-Ocañas1, O Torres-Alanís1(†), HJ Garza-Ulloa1

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 247-253, 2012, DOI:10.32604/phyton.2012.81.247

    Abstract Karwinskia parvifolia Rose synthesizes a toxin (PA1), which might be used to treat some types of tumors. Variability from 16 plants of K. parvifolia and the effect of nitrogen was evaluated on its dry fruit yield. The experiment was carried out using a crossover design, two treatment sequences and two production cycles. Collected data were: dry fruit yield (DFY), dry fruit weight (DFW) and dry endocarp weight (DWE) per plant. During Cycle 1, the group of plants that received additional nitrogen (CN) produced higher yields than the group that received no additional nitrogen (SN). Ratios of CN/SN More >

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