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  • Open Access

    ARTICLE

    Mechanistic Investigation of Capacity Degradation in Lithium Iron Phosphate Batteries under Low Temperature Cycling Conditions

    Jianwei Sun, Shuqing Guo*, Shikai Li

    Energy Engineering, Vol.122, No.9, pp. 3625-3646, 2025, DOI:10.32604/ee.2025.067159 - 26 August 2025

    Abstract Since lithium-ion batteries have been put into use, the recession of work cycle efficiency at low temperatures has received widespread attention. In this paper, we investigated the effect of low temperature (−5°C, 0°C, 5°C) environments on the performance of lithium-ion batteries, which are well-known for their excellent discharge performance, cycle life, and safety. However, lithium-ion batteries exhibit significant capacity degradation at low temperatures, especially at 0°C, losing availability after only 10 cycles. Therefore, we conducted cycle degradation tests at 1C discharge and 100% charge-discharge conditions. In this paper, we analyzed the surface morphology, structure, and More > Graphic Abstract

    Mechanistic Investigation of Capacity Degradation in Lithium Iron Phosphate Batteries under Low Temperature Cycling Conditions

  • Open Access

    ARTICLE

    Experimental Study of a Helium Sorption Cooler with Low Temperature Fluctuation and Long Hold Time below 1 K

    Tianshuo Liu1,2, Xiaoyu Cui1, Lihao Lu2,3, Kongkuai Ying2,*, Yang Wang2,3, Kangjun Liu2, Zilong Wang1, Zhenhua Jiang2,3, Shaoshuai Liu2,3,*

    Frontiers in Heat and Mass Transfer, Vol.23, No.3, pp. 739-750, 2025, DOI:10.32604/fhmt.2025.064532 - 30 June 2025

    Abstract Helium sorption cooler technology is a key means to realize highly reliable low-vibration very low-temperature environments, which have important applications in fields such as quantum computing and space exploration. The laboratory designed a superfluid suppression small hole and a multi-ribbed condenser, developed a reliable-performance helium sorption cooler (HSC), and conducted experimental studies. Experimental results show that the prototype can achieve the lowest cooling temperature of 873 mK without load by filling 6 MPa helium at room temperature. The low-temperature hold time is 26 h, and the temperature fluctuation is within 0.8 mK. The cooling power More >

  • Open Access

    ARTICLE

    Structural, morphological, optical and low temperature magnetic studies on SnSeO3/ZnSeO3 nanocomposite

    N. G. Basil Ralpha, S. Shanmugha Soundareb, R. Harshineea, S. Ariponnammala,*

    Chalcogenide Letters, Vol.21, No.6, pp. 483-491, 2024, DOI:10.15251/CL.2024.216.483

    Abstract Nanocomposite SnSeO3/ZnSeO3 has been synthesized by hydrothermal method. EDAX and XRD confirm the perfect formation of SnSeO3/ZnSeO3 nano composite. It shows an interesting morphology of rectangular bar. Particle size is determined as 137.3nm. It is an effective applicant for applications in optoelectronic field. The energy gap of SnSeO3/ZnSeO3 nanocomposite is 5.52 eV. Urbach energy value obtained is 0.0635 eV. Refractive index obtained from optical energy gap is 1.926. PL emission spectrum obtains a strong efficient emission in UV (~387.7 nm) region, weak emission in green (~520.7 nm) region, and moderate emission in red (~788.7 nm) region. The More >

  • Open Access

    ARTICLE

    Systematic Identification of Acer rubrum bZIP Transcription Factors and Their Potential Role in Anthocyanin Accumulation under Low Temperature with Light

    Yue Zhao1,2,#, Shah Faheem Afzal2,#, Zhu Chen2, Khan Arif Kamal1,2, Yuzhi Fei2, Xin Meng1,2, Jie Ren2,*, Hua Liu1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 3109-3130, 2024, DOI:10.32604/phyton.2024.056548 - 30 November 2024

    Abstract Acer rubrum is an important garden color-leafed plant. Its leaves will turn red in autumn, which is of great ornamental value. The leaf color change in Acer rubrum is closely associated with anthocyanins accumulation. In anthocyanin synthesis and accumulation, various transcription factor families play significant regulatory roles, including the basic (region) leucine zipper (bZIP). However, there is no report on the systematic identification and functional analysis of the bZIPs in Acer rubrum. In this study, 137 bZIPs distributed on 29 chromosomes of Acer rubrum were identified and renamed according to their locations on the chromosomes. According to the constructed… More >

  • Open Access

    ARTICLE

    Assessment of Tolerance of Different Varieties of Hulless Barley Seedlings to Low-Temperature Stress

    Ziao Wang1,3,4,#, Likun An1,3,4,#, Yongmei Cui1,2,3,4, Yixiong Bai1,3,4, Guangping Du1, Kunlun Wu1,2,3,4,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2755-2766, 2024, DOI:10.32604/phyton.2024.055852 - 30 November 2024

    Abstract In this study, we analyzed the agronomic and physiological indicators of the leaves and roots of 60 hulless barley varieties under low-temperature treatment, identified the crucial indicators that can reflect the ability of hulless barley to tolerate low-temperature, and evaluated the ability of different hulless barley varieties to tolerate low-temperature. The results indicated significant differences in the agronomic and physiological indicators of 60 hulless barley varieties subjected to low-temperature treatment. Most of the agronomic indicators significantly decreased, whereas most of the physiological indicators significantly increased. However, the magnitude of changes in each agronomic and physiological… More >

  • Open Access

    ARTICLE

    Properties of Activated Carbons from Sugarcane Leaves and Rice Straw Derived Charcoals by Activation at Low Temperature via KMnO4 Pre-Oxidation-Hydrolysis

    Sumrit Mopoung*, Narissara Namkaew, Sasiwan Srikasaem

    Journal of Renewable Materials, Vol.12, No.8, pp. 1433-1454, 2024, DOI:10.32604/jrm.2024.052925 - 06 September 2024

    Abstract Activated carbon preparation from sugarcane leaves and rice straw by carbonization (250°C–400°C) and activation at 500°C were studied. The effects of pre-oxidation, hydrolysis of derived charcoals by boiled KMnO4 aqueous solution were evaluated. The derived charcoals products were pretreated using oxidation-hydrolysis with 1–5 wt.% KMnO4 at 100°C and then activated at 500°C. The derived charcoal and activated carbon products were characterized by FTIR, XRD, SEM-EDS and BET. Iodine number and methylene blue number of derived products were also used for the analysis of the products. It was found that fabricated charcoal materials made at 350°C–400°C possess… More > Graphic Abstract

    Properties of Activated Carbons from Sugarcane Leaves and Rice Straw Derived Charcoals by Activation at Low Temperature via KMnO<sub>4</sub> Pre-Oxidation-Hydrolysis

  • Open Access

    ARTICLE

    Genome-Wide Exploration of the Grape GLR Gene Family and Differential Responses of VvGLR3.1 and VvGLR3.2 to Low Temperature and Salt Stress

    Honghui Sun1,2,#, Ruichao Liu1,2,#, Yueting Qi1, Hongsheng Gao1, Xueting Wang1, Ning Jiang1,2, Xiaotong Guo1,2, Hongxia Zhang1, Chunyan Yu1,2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.3, pp. 533-549, 2024, DOI:10.32604/phyton.2024.049417 - 28 March 2024

    Abstract Grapes, one of the oldest tree species globally, are rich in vitamins. However, environmental conditions such as low temperature and soil salinization significantly affect grape yield and quality. The glutamate receptor (GLR) family, comprising highly conserved ligand-gated ion channels, regulates plant growth and development in response to stress. In this study, 11 members of the VvGLR gene family in grapes were identified using whole-genome sequence analysis. Bioinformatic methods were employed to analyze the basic physical and chemical properties, phylogenetic trees, conserved domains, motifs, expression patterns, and evolutionary relationships. Phylogenetic and collinear analyses revealed that the VvGLRs… More >

  • Open Access

    ARTICLE

    Experimental Study on the Performance of ORC System Based on Ultra-Low Temperature Heat Sources

    Tianyu Zhou1, Liang Hao1, Xin Xu2,3, Meng Si2,3, Lian Zhang2,3,*

    Energy Engineering, Vol.121, No.1, pp. 145-168, 2024, DOI:10.32604/ee.2023.042798 - 27 December 2023

    Abstract This paper discussed the experimental results of the performance of an organic Rankine cycle (ORC) system with an ultra-low temperature heat source. The low boiling point working medium R134a was adopted in the system. The simulated heat source temperature (SHST) in this work was set from 39.51°C to 48.60°C by the simulated heat source module. The influence of load percentage of simulated heat source (LPSHS) between 50% and 70%, the rotary valve opening (RVO) between 20% and 100%, the resistive load between 36 Ω and 180 Ω or the no-load of the generator, as well… More >

  • Open Access

    ARTICLE

    Comparative Transcriptome Analysis of Seed Germination of a Cotton Variety with High Tolerance to Low Temperature

    Genhai Hu1,*, Maoni Chao1, Xiuren Zhou2, Yuanzhi Fu2

    Phyton-International Journal of Experimental Botany, Vol.92, No.9, pp. 2535-2554, 2023, DOI:10.32604/phyton.2023.030163 - 28 July 2023

    Abstract Gossypium hirsutum L. is an important cash crop native to the subtropics and is widely cultivated around the world. Low temperature is an important stress that seriously affects seed germination and emergence during planting. In this study, transcriptomic profiles of low-temperature- and normal-temperature-germinated seeds of Xinluzao 25, a variety with low-temperature tolerance and high germination rates, were analyzed and compared. The following results were obtained. (1) A total of 81.06 Gb of clean data were obtained after transcriptome sequencing and assembly, and 76,931 non-redundant Unigene sequences were obtained after data consolidation and concatenation; of these, 69,883… More >

  • Open Access

    ARTICLE

    Identification of a Novel OsCYP2 Allele that Was Involved in Rice Response to Low Temperature Stress

    Hongxiu Gao1, Lin Zhu2, Tianqi Liu1, Xueyu Leng1, Zhenxing Zhu3, Wei Xie1, Haitao Lv1, Zhengxun Jin1, Ping Wu4,#, Zhongchen Zhang1,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.6, pp. 1743-1763, 2023, DOI:10.32604/phyton.2023.026516 - 11 April 2023

    Abstract Cyclophilin (CYP) plays an important role in plant response to stress, and OsCYP2, one gene of cyclophlilin family, is involved in auxin signal transduction and stress signaling in rice. However, the mechanism that OsCYP2 is involved in rice response to low temperature is still unclear. We identified a new OsCYP2 allelic mutant, lrl3, with fewer lateral roots, and the differences in shoot height, primary root length and adventitious root length increased with the growth process compared to the wild-type plant. Auxin signaling pathway was also affected and became insensitive to gravity. The transgenic rice plants with over-expression… More >

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