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| 1 | Construction of ultra-stable NiFe armored catalyst for liquid and flexible quasi-solid-state rechargeable Zn-air batteries显示文摘The commercial application of non-precious metal-based electrocatalysts is not only limited by the intrinsic activity of the catalysts,but also the stability of the catalysts is extremely important.Herein,we fabricated an ultra-stable NiFe armored catalyst(Ar-NiFe/NC)by a simple secondary pyrolysis strategy.The as-obtained Ar-NiFe/NC electrocatalyst exhibits an excellent bifunctional oxygen electrocatalytic performance with an activity indicatorΔE of 0.74 V vs.reversible hydrogen electrode(RHE).More importantly,the Ar-NiFe/NC electrocatalyst also shows a remarkable operational and storage stability.After accelerated durability test(ADT)cycles,no obvious degradation of oxygen electrocatalytic performance could be observed.In addition,the Ar-NiFe/NC electrocatalyst still exhibits an unbated oxygen electrocatalytic performance comparable to fresh catalysts after three months of air-exposed storage.The assembled liquid and flexible quasi-solid-state rechargeable Zn-air batteries with the Ar-NiFe/NC electrocatalyst exhibit impressive performance.The liquid rechargeable Zn-air batteries possess a high open-circuit voltage(OCV)of 1.43 V and a salient peak power density of 146.40 mW·cm^(−2),while the flexible quasi-solid-state rechargeable Zn-air batteries also exhibit an excellent OCV of 1.60 V and an exciting peak power density of 41.99 mW·cm^(−2). | Hanqin Sun Meiqi Zhao Chao Ma Wen Chen Yong Yang Yunhu Han | 2023 | Nano Research2023，16，4： | 1 |
| 2 | Cepharanthine enhance radiosensitization of nasopharyngeal carcinoma cells through inhibition of DNA damage repair显示文摘Objective: Recent reports suggest that Cepharanthine(CEP),a natural alkaloid extracted from the roots of Stephania Cepharanthine Hayata,can inhibit the proliferation of various cancer cells,but few studies focus on its radiosensitization in nasopharyngeal carcinoma(NPC)cells. The aim of this study was to explore the radiosensitization effect and the potential mechanisms of CEP on nasopharyngeal carcinoma cell lines CNE-1 and CNE-2. Methods: The NPC cell lines CNE-1 and CNE-2 were treated with CEP(IC50)for 48 h before irration(IR);clonogenic survival was then assessed. The apoptosis and cell cycle progression were using flow cytometry.The DNA damage repair and cycle-regulating proteins were evaluated by Western blot analysis. Results: CEP could inhibit cell growth in both cell lines. The combination of CEP and radiation promote cell cycle G2/M phase arrest and apoptosis in CNE-1 and CNE-2 cells.DNA damage repair analysis showed that CEP has an inhibitory effect on DNA repair of CNE-1 and CNE-2 cells after radiation.Conclusion: CEP enhances tumor radioresponse through multiple mechanisms that may involve the halted cell cycle progression at G2/M phase and the inhibition of DNA repair after exposure to radiation. | Mengya Zhang Tianjun Ma Qingfeng Song Huixia Lin Wei Xiao Meiqi Zhao XinQing Liang Ying Cui | 2018 | 广西医科大学学报2018，35，2： | 0 |
| 3 | Influence of nitrogen on relative parasitic fitness of cultivar-race combinations of rice blast显示文摘Rice blast, caused by Magnaporthe grisea, is one of the most important rice diseases in China. | ZHAO Zhenmei, ZHAO Meiqi, MA Zhanhong, and ZENG Shimai, Dept of Plant Pathology, China Agri Univ, Beijing 100094, China | 2002 | Chinese Rice Research Newsletter2002，10，3： | 0 |
| 4 | Atomic Dispersed Hetero‑Pairs for Enhanced Electrocatalytic CO_(2)Reduction显示文摘Electrochemical carbon dioxide reduction reaction(CO_(2)RR)involves a variety of intermediates with highly correlated reaction and ad-desorption energies,hindering optimization of the catalytic activity.For example,increasing the binding of the*COOH to the active site will generally increase the*CO desorption energy.Breaking this relationship may be expected to dramatically improve the intrinsic activity of CO_(2)RR,but remains an unsolved challenge.Herein,we addressed this conundrum by constructing a unique atomic dispersed hetero-pair consisting of Mo-Fe di-atoms anchored on N-doped carbon carrier.This system shows an unprecedented CO_(2)RR intrinsic activity with TOF of 3336 h−1,high selectivity toward CO production,Faradaic efficiency of 95.96%at−0.60 V and excellent stability.Theoretical calculations show that the Mo-Fe diatomic sites increased the*COOH intermediate adsorption energy by bridging adsorption of*COOH intermediates.At the same time,d-d orbital coupling in the Mo-Fe di-atom results in electron delocalization and facilitates desorption of*CO intermediates.Thus,the undesirable correlation between these steps is broken.This work provides a promising approach,specifically the use of di-atoms,for breaking unfavorable relationships based on understanding of the catalytic mechanisms at the atomic scale. | Zhaoyong Jin Meiqi Yang Yilong Dong Xingcheng Ma Ying Wang Jiandong Wu Jinchang Fan Dewen Wang Rongshen Xi Xiao Zhao Tianyi Xu Jingxiang Zhao Lei Zhang David J.Singh Weitao Zheng Xiaoqiang Cui | 2024 | Nano-Micro Letters2024，16，1： | 0 |
| 5 | Metabolic and immunological effects of gut microbiota in leaf beetles at the local and systemic levels显示文摘Insects’intestinal microbes have profound effects on the host’s physiological traits,which can impact their physiology at both the local(gut)and systemic(body)levels.Nevertheless,the molecular mechanisms underlying hostmicrobiota interactions,especially in non-model insects,remain elusive.Recently,tissue-specific transcriptomic analysis has been highlighted as a robust tool in studying host–microbe interactions.Plagiodera versicolora is a worldwide leaf-eating pest that primarily feeds on willows and poplar.The interplay between gut microflora and this host beetle has yet to be studied.Herein,we investigate the effects of the gut microbiota on the body mass of P.versicolora larvae,compare the nutrition status of larvae in absence and presence of gut microbiota,and profile gut bacterial loads throughout its developmental larval stages.We then perform comparative transcriptomic analysis of gut and body tissues in axenic and non-axenic larvae.Finally,we confirm the expression patterns of representative genes in nutritional metabolism and immunity.Results show that weight growth is retarded in conventional larvae,with a concomitant increase of total bacterial load by the 5^(th)development day,and germ-free larvae have a higher glucose content than conventional-reared larvae.Both nutritional and immunological analyses indicate that gut bacteria are a burden in the beetle’s larval development.These findings elucidate the impacts of gut microbiota on P.versicolora,and provide insight into tissue-specific responses to gut microflora in this pest at the genetic level,boosting our understanding of the molecular mechanisms underlying host–microbe interactions in leaf beetles and beyond. | Meiqi MA Chengjie TU Jing LUO Min LU Shichang ZHANG Letian XU | 2021 | Integrative Zoology2021，16，3： | 0 |
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