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湘南学院学报 2020年第3期41卷 53-56页

作者：曹栩雯湖南大学新闻传播与影视艺术学院湖南长沙410000

社交媒体利用其传播速度快、受众范围广、信息新鲜等特点,在一些重大突发事件的报道中发挥了重要作用,成为突发事件报道的重要平台。社交媒体的即时性加速了信息的传播,让受众得到一手资讯,并赋予受众互动的权利。探讨了社交媒体在突发... 详细信息

社交媒体利用其传播速度快、受众范围广、信息新鲜等特点,在一些重大突发事件的报道中发挥了重要作用,成为突发事件报道的重要平台。社交媒体的即时性加速了信息的传播,让受众得到一手资讯,并赋予受众互动的权利。探讨了社交媒体在突发事件报道中的应用及其所带来的问题。

关键词：时效性舆论引导互动新闻失实人文关怀专业性

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Transcriptomic responses of the liver of mandarin fish (Siniperca chuatsi) under hypoxic stress

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JOURNAL OF FISH BIOLOGY 2023年第1期103卷 44-58页

作者： Ding, Weidong cao, Liping cao, Zheming Bing, xuwen Chinese Acad Fishery Sci Freshwater Fisheries Res Ctr Key Lab Freshwater Fisheries & Germplasm Resources Minist Agr Wuxi 214081 Peoples R China

Environmental hypoxia is becoming more prevalent in aquatic environments of mandarin fish (Siniperca chuatsi) aquaculture because of eutrophication and climate change. Little information is available on the molecular mechanisms of the detrimental effects of hypoxia in this species. In this study, the authors assembled a transcriptome for mandarin fish exposed to lower oxygen conditions at different times (24 and 96 h). The antioxidant enzymatic activities of catalase, glutathione, superoxide dismutase, glutamic pyruvic transaminase and malondialdehyde significantly increased at 6 or 12 h but decreased after reaching a climax during 96 h hypoxia stress. The gene ontology study revealed 27,616 transcripts, whereas the Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed 25 linked pathways. Significant changes in the expression of certain genes involved in protein processing in the endoplasmic reticulum, the calcium signalling system and inositol phosphate metabolism were discovered using the KEGG pathway analysis. In the liver, 97 genes were differentially expressed between the control and experimental groups. The expression level of 28 differentially expressed genes (DEGs) under different hypoxic stress conditions was detected using real-time PCR and compared to transcriptome sequencing results. The result showed that some genes in the experimental group associated with hypoxic stress, such as hif, ho-1a, ho-1b, igfbp1, hsp90 alpha and hsp90 beta, were significantly upregulated compared with those in the control group. The large amount of transcriptome data from this research has enlarged the mandarin fish gene and genome bioinformation. The identified DEGs and pathways are useful in further studies of biological responses to hypoxia.

关键词： differentially expressed genes hypoxia mandarin fish transcriptome

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东非鲁伍马盆地深水沉积体系及油气勘探意义

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海洋地质与第四纪地质 2021年第2期41卷 173-180页

作者：曹全斌曹旭文鲁银涛陈宇航闫春许小勇王朝锋中国石油杭州地质研究院杭州310023 自然资源部第二海洋研究所杭州310012 西安石油大学西安710065

利用高分辨率三维地震资料、测井和钻井数据,对东非鲁伍马盆地深水沉积特征进行了系统刻画。根据深水沉积体的地震相特征,识别出峡谷、水道、漫溢沉积、朵体、块体搬运沉积(MTDs)和凝缩段等深水沉积单元,建立了地震识别图版。分析总结... 详细信息

利用高分辨率三维地震资料、测井和钻井数据,对东非鲁伍马盆地深水沉积特征进行了系统刻画。根据深水沉积体的地震相特征,识别出峡谷、水道、漫溢沉积、朵体、块体搬运沉积(MTDs)和凝缩段等深水沉积单元,建立了地震识别图版。分析总结了水道和朵体的岩性特征、电性特征和储层物性特征,砂岩具有低伽马(GR)和高电阻(RT)特征,厚层砂岩GR曲线呈“箱型”,有泥岩夹层的砂岩段呈叠加的“钟型”特点;储层压实程度弱,发育原生粒间孔隙,具有中—高孔、中—高渗的特征。结合成藏条件研究,认为由水道和朵体浊积砂岩储层、凝缩段和漫溢沉积泥岩盖层、天然堤和MTDs为侧向遮挡等要素构成的油气储、盖配置关系,是研究区油气成藏的一个关键因素,对深水油气勘探具有一定的指导意义。

关键词：深水沉积特征沉积结构单元油气勘探东非鲁伍马盆地

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Insight into Iron Leaching from an Ascorbate-Oxidase-like Fe−N−C Nanozyme and Oxygen Reduction Selectivity**

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Angewandte Chemie 2023年第27期135卷

作者： xuwen cao Caixia Zhu Qing Hong Xinghua Chen Kaiyuan Wang Prof. Yanfei Shen Prof. Songqin Liu Prof. Yuanjian Zhang Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research School of Chemistry and Chemical Engineering Southeast University Nanjing 211189 China Medical School Southeast University Nanjing 210009 China

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Multidisciplinary optimization of electromagnetic linear actuators for direct-drive systems with a combination of static and dynamic performance

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COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING 2023年第2期42卷 476-493页

作者： Chi, xuwen Tan, cao Li, Bo Lu, Jiayu Gu, Chaofan Fu, Changzhong Shandong Univ Technol Sch Transportat & Vehide Engn Zibo Peoples R China Shandong Zhongbaokang Med Equipment Co Zibo Peoples R China

Purpose The purpose of this paper is to solve the common problems that traditional optimization methods cannot fully improve the performance of electromagnetic linear actuators (EMLAs). Design/methodology/approach In this paper, a multidisciplinary optimization (MDO) method based on the non-dominated sorting genetic algorithm-II (NSGA-II) algorithm was proposed. An electromagnetic-mechanical coupled actuator analysis model of EMLAs was established, and the coupling relationship between static/dynamic performance of the actuator was analyzed. Suitable optimization variables were designed based on fuzzy grayscale theory to address the incompleteness of the actuator data and the uncertainty of the coupling relationship. A multiobjective genetic algorithm was used to obtain the optimal solution set of Pareto with the maximum electromagnetic force, electromagnetic force fluctuation rate, time constant and efficiency as the optimization objectives, the final optimization results were then obtained through a multicriteria decision-making method. Findings The experimental results show that the maximum electromagnetic force, electromagnetic force fluctuation rate, time constants and efficiency are improved by 18.1%, 38.5%, 8.5% and 12%, respectively. Compared with single-discipline optimization, the effectiveness of the multidiscipline optimization method was verified. Originality/value This paper proposes a MDO method for EMLAs that takes into account static/dynamic performance, the proposed method is also applicable to the design and analysis of various electromagnetic actuators.

关键词： Electromagnetic linear actuator Fuzzy grayscale theory Multidisciplinary optimization Performance analysis Multicriteria decision-making Mechatronics Actuators Power losses Pareto optimization Coupled systems

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Stratum Corneum-Inspired Zwitterionic Hydrogels with Intrinsic Water Retention and Anti-Freezing Properties for Intelligent Flexible Sensors

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ADVANCED FUNCTIONAL MATERIALS 2025年第0期

作者： Wu, Meng Qiao, Chenyu Sui, Peng-Fei Luo, Jing-Li Li, Zuoli cao, Yi Pei, Renjun Peng, xuwen Zeng, Hongbo Chinese Acad Sci Suzhou Inst Nanotech & Nanobion CAS Key Lab Nanobio Interface Suzhou 215123 Peoples R China Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 1H9 Canada Tsinghua Univ Dept Chem Engn Beijing 10084 Peoples R China

Hydrogels, which mimic the properties of natural tissues, are essential for flexible electronics in human-machine interfaces (HMIs). However, traditional hydrogels suffer from dehydration, compromising stability and functionality. To address this issue, a stratum corneum-inspired, water-retaining hydrogel is developed using hygroscopic polymers and bound water. Three types of hydrophilic monomers (non-ionic, mono-ionic, and zwitterionic) are explored, with polyzwitterions, particularly N,N-dimethyl (acrylamidopropyl) ammonium propane sulfonate (DMAAPS), forming a quasi-hydrogel that retains the softness and flexibility of conventional hydrogels. Water acts as a plasticizer, enhancing polymer chain mobility and reducing stiffness. The DMAAPS hydrogel maintains 100% weight retention under specific humidity conditions and shows skin-like softness across a wide humidity range. The Young's modulus increases from 54 to 118 kPa as relative humidity decreases from 80% to 40%. The absence of free water confers intrinsic anti-freezing properties. A triple crosslinking mechanism and conductive polymers endow the hydrogel with stretchability (> 2000%), toughness, elasticity, self-healing, and stable sensing capabilities. The hydrogel functions as an excellent flexible sensor for real-time, sensitive detection of human motion and physiological signals. An intelligent handwriting recognition platform with high accuracy is also established using double-channel signal collection and machine learning algorithms, offering insights for next-generation durable, biomimetic, and smart HMIs.

关键词： anti-freezing flexible sensors self-healing stratum corneum-inspired materials water retention wearable electronics Zwitterionic hydrogels

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Study of Wall Strain during LaNi5Alloy's Hydrogen Absorption/Desorption Process

Study of Wall Strain during LaNi5Alloy's Hydrogen Absorption...

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2022 International Conference on Energy and Power Engineering, EPE 2022

作者： Yin, xuwen cao, Shuaijie Yang, Fusheng Imin, Rahmatjan School of Mechanical Engineering Xinjiang University Xinjiang Urumqi830017 China School of Chemical Engineering and Technology Xi'an Jiaotong University Shanxi Xi'an710049 China School of Mathematics and Systems Science Xinjiang University Xinjiang Urumqi830017 China

An experimental LaNi5 alloy's hydrogen absorption/desorption system was established to explore the strain generation process mechanism on the reactor wall during the cyclic hydrogen absorption/desorption process of LaNi5 alloy powders at room temperature after different cycles and periods. On this basis, the influence of the hydrogen pressure on the wall strain of the reactor was verified. Results showed that with the increase in cycles, the reactor wall was subjected to an expansion strain, and the closer to the reactor bottom, the greater the strain value. As the hydrogen pressure grew from 3.0 to 4.0 MPa, the strain value at the reactor bottom increased obviously. Still, it did not grow during cycling experiments with hydrogen, indicating that the agglomeration phenomenon was mainly attributed to the pulverization effect after hydrogen absorption by the alloy instead of the gas pressure itself. After 24 cyclic reactions, the wall strain at the 1/5 position from the bottom experienced changes in growth laws since the thermal strain was not enough to influence the expansion strain triggered by agglomeration, and the closer to the reactor top, the more greatly the wall strain was influenced by reaction heat. © Published under licence by IOP Publishing Ltd.

关键词： Binary alloys

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Characterization of the growth-related transcriptome in the Liver and Brain of mandarin fish (Siniperca chuatsi) through RNA-Seq analysis

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JOURNAL OF APPLIED ANIMAL RESEARCH 2024年第1期52卷

The brain and liver of mandarin fish (Siniperca chuatsi) produce essential hormones for their growth and development. However, the mechanisms underlying the interplay of these hormones remain unclear. This study aimed to assess the slow - and fast-growing traits, including body weight and length of mandarin fish reared in a single pond. To compare the differentially expressed genes (DEGs) in slow - and fast-growing fishes, we performed RNA sequencing analysis. After assembling the clean reads, 192,280 transcripts and 100,416 unigenes were obtained. 344 and 845 DEGs in the brain and liver in the fast-and slow-growing group were annotated respectively. These DEGs were associated with signaling pathways involved in growth and development, such as AGE-RAGE, Transforming growth factor-beta/Smad, Mitogen-activated protein kinase, Wingless/Integrated, and Insulin-like growth factor (IGF) 1. Furthermore, our fasting experiment revealed a concurrent decrease in body weight and the expression levels of genes related to the growth hormone (GH)/IGF system, alongside an increase in the insulin-like growth factor binding protein gene IGFBP3 expression. These findings suggest the GH/IGF system regulates body weight during fasting periods. The vast amount of transcriptome data generated in this study substantially expands the existing gene and genome resources for the growth traits of mandarin fish.

关键词： Mandarin fish transcriptome growth DEG fasting

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Identification, Characterization, and Receptor Binding Mechanism of New Umami Peptides from Traditional Fermented Soybean Paste (Dajiang)

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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023年第48期71卷 18953-18962页

作者： cao, Kaixin An, Feiyu Wu, Junrui Ji, Shuaiqi Rong, Yaozhong Hou, Yuchen Ma, xuwen Yang, Wenxin Hu, Longkun Wu, Rina Shenyang Agr Univ Coll Food Sci Shenyang 110866 Liaoning Peoples R China Engn Res Ctr Food Fermentat Technol Shenyang 110866 Liaoning Peoples R China Key Lab Microbial Fermentat Technol Innovat Shenyang 110866 Liaoning Peoples R China Shanghai Totole Food Co Ltd Shanghai 201812 Peoples R China

Dajiang, a traditional Chinese condiment, is made from fermented soybeans. It is highly popular among consumers as a result of its delicious umami flavor, which mainly originates from umami peptides. To examine the mechanism of umami taste in Dajiang, we selected Dajiang samples with strong umami taste and subjected them to purification and identification analysis using ethanol precipitation, gel chromatography, reversed-phase high-performance liquid chromatography, and ultraperformance liquid chromatography-tandem mass spectrometry. Subsequently, on the basis of toxicity and umami prediction analysis, we screened, synthesized, and characterized three novel bean umami peptides in Dajiang: TLGGPTTL, 758.4174 Da;GALEQILQ, 870.4811 Da;and HSISDLQ, 911.4713 Da. Their sensory threshold values were 0.25, 0.40, and 0.17 mmol/L, respectively. Furthermore, molecular docking results showed that hydrogen-bonding and hydrophobic interactions are important interaction forces in the binding of umami peptide to taste receptors. Ser147 and Glu148 of the T1R3 taste receptor are important amino acid residues for binding of the three umami peptides. This study uncovers the mechanism of umami-peptide-driven flavor in fermented soybean products.

关键词： Dajiang umami peptides taste characteristics molecular docking

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Maternal perception of child weight and concern about child overweight mediates the relationship between child weight and feeding practices

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PUBLIC HEALTH NUTRITION 2022年第7期25卷 1780-1789页

作者： Wang, Jian Zhu, Daqiao Cheng, xuwen Liuzhou, Yicong Zhu, Bingqian Montgomery, Scott cao, Yang Shanghai Jiao Tong Univ Sch Nursing Shanghai 200025 Peoples R China Kings Coll London Florence Nightingale Fac Nursing Midwifery & Pall London England Jinyang Community Hlth Serv Ctr Dept Childrens Dis Prevent Shanghai Peoples R China Shanghai Childrens Med Ctr Dept Nursing Shanghai Peoples R China Orebro Univ Sch Med Sci Clin Epidemiol & Biostat Orebro Sweden Karolinska Inst Dept Med Clin Epidemiol Div Stockholm Sweden UCL Dept Epidemiol & Publ Hlth London England

Objective: To examine the mediating effects of maternal perception of child weight (weight perception) and concern about overweight (weight concern) on the paths between child weight and maternal feeding practices. Setting: Pudong District, Shanghai, China. Participants: A convenience sample of 1164 mothers who were primary caregivers of preschool children. Results: Sixty per cent of the mothers perceived their overweight/obese children as normal weight or even underweight. The disagreement between actual child weight and maternal weight perception was statistically significant (Kappa = 0 center dot 212, P < 0 center dot 001). Structural equation modelling indicated that weight perception fully mediated the relationship between child BMI Z-scores and pressure to eat. Weight concern fully mediated the relationships between child BMI Z-scores and the other three feeding practices. The serial mediating effects of weight perception and concern were statistically significant for the paths between child BMI Z-score and monitoring (beta = 0 center dot 035, P < 0 center dot 001), restriction (beta = 0 center dot 022, P < 0 center dot 001), and food as a reward (beta = -0 center dot 017, P < 0 center dot 05). Conclusion: Child weight may influence maternal feeding practices through weight perception and concern. Thus, interventions are needed to increase the accuracy of weight perception, which may influence several maternal feeding practices and thereby contribute to child health.

关键词： Preschool children Maternal concern Weight perception Feeding practices

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