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| 1 | A Facile and Template-Free One-Pot Synthesis of Mn_3O_4 Nanostructures as Electrochemical Supercapacitors显示文摘In this paper, we report an effective, simple, and cost-effective strategy of electrochemical deposition to prepare hausmannite Mn_3O_4 thin films for the applications of supercapacitors. Various precursor concentrations and deposition durations were manipulated to tailor the surface morphologies of Mn_3O_4 nanostructures and to optimize their electrochemical performances. The Mn_3O_4 samples prepared at 0.05 M Mn(NO3)2solution for 30 min delivered a large gravimetric specific capacitance of 210 F g-1at a current density of 0.5 A g-1, and a good rate capability over other samples. This superior electrochemical performance may be attributed to the improved electrode conductivity with increased accessible area for electrolytes ions. Furthermore, a nanocomposite film based on Mn_3O_4/carbon foam was fabricated by utilizing the developed optimized conditions. The Mn_3O_4/carbon foam films exhibit an excellent specific capacitance with negligible degradation in retaining specific capacitance values up to 4000 cycles. These findings could further broaden the applications of hausmannite Mn_3O_4 in electrochemical energy storage electrodes. | Zhenjun Qi Adnan Younis Dewei Chu Sean Li | 2016 | Nano-Micro Letters2016，8，2： | 4 |
| 2 | Up-regulation of Thioredoxin 1 by aerobic exercise training attenuates endoplasmic reticulum stress and cardiomyocyte apoptosis following myocardial infarction显示文摘Exercise training(ET)has been reported to reduce oxidative stress and endoplasmic reticulum(ER)stress in the heart following myocardial infarction(MI).Thioredoxin 1(Trx1)plays a protective role in the infarcted heart.However,whether Trx1 regulates ER stress of the infarcted heart and participates in ET-induced cardiac protective effects are still not well known.In this work,H9c2 cells were treated with hydrogen peroxide(H_(2)O_(2))and recombinant human Trx1 protein(TXN),meanwhile,adult male C57B6L mice were used to establish the MI model,and subjected to a six-week aerobic exercise training(AET)with or without the injection of Trx1 inhibitor,PX-12.Results showed that H_(2)O_(2)significantly increased reactive oxygen species(ROS)level and the expression of TXNIP,CHOP and cleaved caspase12,induced cell apoptosis;TXN intervention reduced ROS level and the expression of CHOP and cleaved caspase12,and inhibited cell apoptosis in H_(2)O_(2)-treated H9c2 cells.Furthermore,AET up-regulated endogenous Trx1 protein expression and down-regulated TXNIP expression,restored ROS level and the expression of ER stress-related proteins,inhibited cell apoptosis as well as improved cardiac fibrosis and heart function in mice after MI.PX-12 partly inhibited the AET-induced beneficial effects in the infarcted heart.This study demonstrates that Trx1 attenuates ER stress-induced cell apoptosis,and AET reduces MI-induced ROS overproduction,ER stress and cell apoptosis partly through up-regulating of Trx1 expression in mice with MI. | Mengxin Cai Zujie Xu Wenyan Bo Fangnan Wu Wenpu Qi Zhenjun Tian | 2020 | Sports Medicine and Health Science2020，2，3： | 1 |
| 3 | LncRNA-Airn alleviates acute liver injury by inhibiting hepatocyte apoptosis via the NF-κB signaling pathway显示文摘Acute liver injury is a common and serious syndrome caused by multiple factors and unclear pathogenesis.If the injury persists,liver injury can lead to cirrhosis and liver failure and ultimately results in the development of liver cancer.Emerging evidence has indicated that long noncoding RNAs(lncRNAs)play an important role in the development of liver injury.However,the role of antisense Igf2r RNA(Airn)in acute liver injury and its underlying mechanism remain largely unclear.In this study,we show that Airn is upregulated in liver tissue and primary hepatocytes from an acute liver injury mouse model.Consistently,Airn is also overexpressed in serum samples of patients with acute-on-chronic liver failure and is negatively correlated with the Model for End-Stage Liver Disease(MELD)score.Moreover,gene knockout and rescue assays reveal that Airn alleviates CCl_(4)-induced liver injury by inhibiting hepatocyte apoptosis and oxidative stress in vivo.Further investigation reveals that Airn decreases H_(2)O_(2)-induced hepatocyte apoptosis in vitro.Mechanistically,we reveal that Airn represses CCl_(4)-and H_(2)O_(2)-induced enhancement of phosphorylation of p65 and IκBα,suggesting that Airn inhibits hepatocyte apoptosis by inactivating the NF-κB pathway.In conclusion,our results demonstrate that Airn can alleviate acute liver injury by inhibiting hepatocyte apoptosis via inactivating the NF-κB signaling pathway,and Airn could be a potential biomarker for acute liver injury. | Shuai Shao Yu Zhang Feng Zhou Xiaoxiang Meng Zhenjun Yu Guantong Li Lina Zheng Kun Zhang Yuhan Li Beichen Guo Qi Liu Mengxia Zhang Xiaoxiao Du Wei Hong Tao Han | 2022 | Acta Biochimica et Biophysica Sinica2022，54，11： | 1 |
| 4 | Optimization of Chinese solar greenhouse building parameters based on CFD simulation and entropy weight method显示文摘The building parameters of Chinese solar greenhouse(CSG)directly affect the front roof lighting and indoor thermal environment.In order to obtain the optimal parameter combination,a building parameter optimization method based on computational fluid dynamics(CFD)simulation and entropy weight method was proposed.Firstly,a three-dimensional thermal and humidity environment model of CSG was constructed considering the coupling effect of soil,crop,and back wall based on CFD.The reliability of the model was validated through experiments in a CSG of Yongqing County,Hebei Province of China.Then,the indoor air temperature rise rate,air temperature and humidity uneven coefficient,and average air temperature and humidity were selected as the evaluation indicators of CSG thermal and humidity environment.The ridge height,back wall height and the horizontal projection of back roof of CSG were selected as the three factors of the orthogonal test plan,and a three-factor and four-level plan was designed,resulting in 16 different parameter combinations.By use of CFD simulation,the thermal and humidity environment evaluation indicators under different parameter combinations were calculated.The entropy weight method was used to assign weights to the evaluation indicators,and the comprehensive evaluation indicators of CSG thermal and humidity environment were obtained based on the linear weighting principle.By comparing comprehensive evaluation indicators,the optimal combination of building parameters was obtained with a ridge height of 5.72 m,a back wall height of 3.2 m,and a horizontal projection of 2.1 m on the back roof.The research results can provide a practical and feasible method for optimizing the building parameters of CSG,and provided theoretical guidance for the structural design and optimization of CSG. | Fen He Changqing Si Xiaoming Ding Zhenjun Gao Binbin Gong Fei Qi Yilei Yin Qian Feng | 2023 | International Journal of Agricultural and Biological Engineering2023，16，6： | 0 |
| 5 | Corrosion and tribocorrosion resistance of MAO-based composite coating on AZ31 magnesium alloy显示文摘In this paper, a multi-functional composite coating with low friction coefficient, high wear resistance and excellent tribocorrosion resistance is fabricated on AZ31 Mg alloys by micro-arc oxidation and spray-coating methods. The microstructure, and composition of the coating are characterized by SEM, EDS, XRD, and FT-IR. Potentiodynamic polarization and EIS tests are conducted to evaluate the corrosion resistance of the composite coating. The tribocorrosion property is also studied using pin-on-disk tribometer in 3.5 wt.% Na Cl solution. It is found that the composite coating possesses better long-term corrosion resistance than the single MAO coating. The tribocorrosion tests prove that the composite coating exhibits much better wear and tribocorrosion resistance than the single MAO coating and can protect the substrate from corrosion under a sliding condition. | Siqin Liu Guihua Li Yuming Qi Zhenjun Peng Yinping Ye Jun Liang | 2022 | Journal of Magnesium and Alloys2022，10，12： | 0 |
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