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CoNi nanoparticles anchored inside carbon nanotube networks by transient heating:Low loading and high activity for oxygen reduction and evolution

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Journal of Energy Chemistry 2021年第3期30卷 63-71页

作者： Chengfeng Zhu Wei Yang Jiangtao Di sha zeng Jian Qiao Xiaona Wang Bo Lv Qingwen Li Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials Division.Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina Division of Nanomaterials Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesNanchang 330200JiangxiChina School of Materials Science and Engineering and Key Laboratory of Aerospace Materials and Performance Ministry of EducationBeihang UniversityBeijing 100083China

Transitional metal alloy and compounds have been developed as the low cost and efficient bifunctional electrocatalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).However,a high mass loading of these catalysts is commonly needed to achieve acceptable catalytic performance,which could cause such problems as battery weight gain,mass transport blocking,and catalyst *** report herein the preparation of fine CoNi nanoparticles(5-6 nm)anchored inside a nitrogendoped defective carbon nanotube network(CoNi@N-DCNT)by a transient Joule heating *** utilized as an electrocatalyst for oxygen reduction and evolution in alkaline media,the CoNi@N-DCNT film catalyst with a very low mass loading of 0.06 mg cm^(-2) showed excellent bifunctional catalytic *** ORR,the onset potential(Eonset)and the half-wave potential(E_(1/2))were 0.92 V versus reversible hydrogen electrode(***)and 0.83 V(***),*** OER,the potential at the current density(J)of 10 mA cm^(-2)(E_(10))was 1.53 V,resulting in an overpotential of 300 mV much lower than that of the commercial RuO_(2) catalyst(320 mV).The potential gap between E_(1/2) and E_(10) was as small as 0.7 *** the low mass loading,the mass activity at E_(10) reached at 123.2 A g^(-1),much larger than that of the RuO_(2) catalyst and literature results of transitional metal-based bifunctional ***,the CoNi@N-DCNT film catalyst showed very good long-term stability during the ORR and OER *** excellent bifunctional catalytic performance could be attributed to the synergistic effect of the bimetal alloy.

关键词： Transient Joule heating method Carbon nanotubes Nano alloy Low loading Bifunctional catalyst

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Effective Neural Algorithms for Combinatorial Optimization

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Systems Science and Systems Engineering 1993年第4期3卷 326-333页

作者： zeng Anjun sha Jichang National University of Defence and Technology, Changsha 410073, China

This paper provides an overview on the current status of the researches in the field of neural algorithms for combinatorial optimization and makes some comments on the recent development. Meanwhile,we point out that such optimization networks suffer from some serious problems. At the end of this paper, we present the readers some aspects which need more researches in the future.

关键词： neural networks combinatorial optimization NP-complete.

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In-situ emb e dding zeolitic imidazolate framework derived Co–N–C bifunctional catalysts in carbon nanotube networks for flexible Zn–air batteries

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Journal of Energy Chemistry 2019年第11期28卷 170-176页

作者： Bo Lv sha zeng Wei Yang Jian Qiao Chao Zhang Chengfeng Zhu Minghai Chen Jiangtao Di Qingwen Li School of Nano-Technology and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina

Recently, the development of high-performance bifunctional oxygen catalysts integrated with flexible conductive scaffolds f or rechargeable metal-air batteries has attracted considerable interest, driving by fastgrowing wearable electronics. Herein, we report a flexible bifunctional oxygen catalyst thin film consisting of Co–N–C bifunctional catalysts embedding in carbon nanotube(CNT) networks. The catalyst is readily prepared by pyrolysis of cobalt-based zeolitic imidazolate frameworks(ZIF-67) that are in-situ synthesized in CNT networks. Such catalyst film demonstrates very high catalytic activities for oxygen reduction(onset potential: 0.91 V, and half-wave potential: 0.87 V vs. RHE) and oxygen evolution(10 m Acm^-2 at 1.58 V) reactions, high methanol tolerance property, and long-term stability(97% current retention). Moreover, our integrated catalyst film shows very good structure flexibility and robustness. Based on the obtained film air electrodes, flexible Zn–air batteries demonstrate low charging and discharging overpotentials(0.82 V at 1 m A cm^-1) and excellent structure stability in the bending tests. These results indicate that presently reported catalyst films are potential air electrodes for flexible metal–air batteries.

关键词： Air electrodes Carbon nanotube films Bifunctional catalysts Zn-air batteries Zeolitic imidazolate framework

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概念内涵·政治意涵·形象塑造

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上海翻译 2021年第6期 60-66,F0003页

作者：曾利沙广东外语外贸大学翻译学研究中心广东广州420450

政治话语外译在当前政治语境中获得了新的目的指向,国家机构译者的理念也随之与时俱进。将有关经验感性认识上升为理论理性认识,构建成体系化的理论范畴对深化政治话语外译研究具有积极的推动作用。本文阐释了三大核心理论范畴的特点、... 详细信息

政治话语外译在当前政治语境中获得了新的目的指向,国家机构译者的理念也随之与时俱进。将有关经验感性认识上升为理论理性认识,构建成体系化的理论范畴对深化政治话语外译研究具有积极的推动作用。本文阐释了三大核心理论范畴的特点、理论职能及相互关系,拓展了政治话语外译理论与实践的研究维度,并通过典型译例剖析和归纳,演绎出相应的理论范式,确证了其规律表征。

关键词：概念内涵政治意涵形象塑造政治话语理论范畴体系

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宏观·中观·微观·范式--论开放性TSPT研究范畴拓展的模块化创新路向

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上海翻译 2020年第1期 14-19,94页

作者：曾利沙广东外语外贸大学翻译学研究中心广东广州510420

应用翻译学理论体系(TSPT)的完善是其作为一门学科发展走向成熟的重要标志。本文从哲学观与学理性研究的逻辑基础出发,论述了宏-中-微观层次理论研究范畴拓展的增长点,倡导经验模块和理论模块化研究范式,以期为深化TSPT理论与实践的范... 详细信息

应用翻译学理论体系(TSPT)的完善是其作为一门学科发展走向成熟的重要标志。本文从哲学观与学理性研究的逻辑基础出发,论述了宏-中-微观层次理论研究范畴拓展的增长点,倡导经验模块和理论模块化研究范式,以期为深化TSPT理论与实践的范畴化研究提供一种创新路向。

关键词：应用翻译学理论范畴研究范式模块化翻译研究

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Suppression of AOM/DSS-induced colorectal cancer by scutellarin through downregulation of Wnt signaling pathway activity

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中国药理学与毒理学杂志 2021年第10期35卷 739-740页

作者： zeng sha ZHAO Hui CHEN Li SUN Qiang REN shan LIU Mao-lun YANG Han TANG Shun LU Jin-jian XU Hai-bo State Key Laboratory of Southwestern Chinese Medicine Resources Department of PharmacologyChengdu University of Traditional Chinese MedicineChengdu 611137China Institute of Chinese Medical Sciences University of MacaoMacaoChina

OBJECTIVE To investigate the therapeutic effect of scutellarin on colitis-associated cancer(CAC)and its underlying mechanism based on Wnt/β-catenin signaling *** The mouse model of CAC was established by azomethane oxide(AOM)and sodium dextran sulfate(DSS),followed by scutellarin treatment,with recording the body weight,diarrhea and *** sacrificing the mice,the colorectal length and colorectal tumor were *** levels of pro-inflammatory factors TNF-αand IL-6 in mice′s sera were measured by the enzyme-linked immunosorbent assay(ELISA).The colorectal lesions were appraised by hematoxylin and eosin(H&E)***β-catenin level in CAC tissues was probed by immunofluorescent *** apoptosis-related genes Bax and Bcl-2,and Wnt signaling pathway-related genesβ-catenin,GSK-3β,TCF4,c-Myc and cyclin D1 were detected by real-time quantitative RT-PCR(RT-qPCR).Finally,Western blotting analysis(WB)was employed to examine the expressions of the apoptosis and Wnt signaling pathway-related *** Scutellarin significantly improved AOM/DSS-caused weight loss,colorectal length shortening,and tumor growth in mice(Psharply inhibited the nuclear translocation ofβ-catenin,as evidenced by the reduction in the nuclear level ofβ-catenin *** addition,scutellarin attenuated the mRNA expression of Wnt signaling pathway-relatedβ-catenin,TCF4,c-Myc and cyclin D1,whereas it heightened GSK-3βmRNA *** results were consolidated by WB analysis,which indicated that scutellarin could mitigate the protein levels of phospho-GSK-3β,β-catenin,TCF4,c-Myc and cyclin D1,with the increase in GSK-3βprotein in CAC ***,scutellarin could induce the apoptosis of CAC,demonstrated by enhanced expression of Bax and diminished ex

关键词： scutellarin colorectal cancer Wnt signaling pathway AOM/DSS

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峨眉山不同植被类型下冬季大型土壤动物群落结构

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重庆师范大学学报（自然科学版） 2017年第2期34卷 96-101页

作者：胡霞曾沙乐山师范学院生命科学学院四川乐山614004

【目的】研究典型植被下冬季大型土壤动物的群落特征。【方法】2015年12月采用手拣法收集并鉴定峨眉山典型植被下大型土壤动物。【结果】共检出大型土壤动物667只,隶属4门11纲26目。植被种类丰富、温湿度水平均较高的常绿、落叶阔叶混... 详细信息

【目的】研究典型植被下冬季大型土壤动物的群落特征。【方法】2015年12月采用手拣法收集并鉴定峨眉山典型植被下大型土壤动物。【结果】共检出大型土壤动物667只,隶属4门11纲26目。植被种类丰富、温湿度水平均较高的常绿、落叶阔叶混交林带中土壤动物数量和类群均较多。而植被类型较单一、温湿度水平均低、土壤冻结的寒温性针叶林带中土壤动物数量和类群最少。多样性结果分析表明,常绿阔叶林中大型土壤动物的Pielou指数(J)和shannon-Wiener指数(H′)均为最高,而寒温性针叶林地下5cm中大型土壤动物的这两项指数最低;针阔混交林带和寒温性针叶林中大型土壤动物的Simpson指数(C)最高。【结论】植被类型和环境变化对大型土壤动物群落有强烈的作用,从而进一步影响了土壤生态过程。

关键词：大型土壤动物植被冬季峨眉山

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基于灰关联神经网络的铣削表面粗糙度预测

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机械设计与制造 2021年第3期 293-296,300页

作者：袁磊曾莎莎海南大学机电工程学院海南海口570228 武汉大学动力与机械学院湖北武汉430072

不同的铣削加工工艺参数会影响加工表面形貌和表面粗糙度。考虑灰关联分析与神经网络法的各自优点,提出了一种新的基于灰关联神经网络模型进行表面粗糙度预测的模型。首先利用灰关联分析,将各因子与预测目标作关联性的排序,且把不必要... 详细信息

不同的铣削加工工艺参数会影响加工表面形貌和表面粗糙度。考虑灰关联分析与神经网络法的各自优点,提出了一种新的基于灰关联神经网络模型进行表面粗糙度预测的模型。首先利用灰关联分析,将各因子与预测目标作关联性的排序,且把不必要的因子剔除,接着进行神经网络的训练及预测。将所提的预测模型运用到铣削加工的表面粗糙度预测中,构建出表面粗糙度预测系统,最后采用两样本T分配假设检验,以此验证该预测系统的有效性与可行性。

关键词：灰关联分析神经网络法表面粗糙度加工参数

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Scutellarin induces apoptosis of colorectal cancer HCT116 cells via Hippo signaling pathway

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中国药理学与毒理学杂志 2021年第10期35卷 775-776页

作者： YANG Han SUN Qiang zeng sha CHEN Li ZHAO Hui LIU Mao-lun REN shan MING Tian-qi LU Jin-jian XU Hai-bo State Key Laboratory of Southwestern Chinese Medicine Resources Department of PharmacologyChengdu University of Traditional Chinese MedicineChengdu 611137China Institute of Chinese Medical Sciences University of MacaoMacaoChina

OBJECTIVE To investigate the effect of scutellarin on the apoptosis of human colorectal cancer cells via the Hippo signaling pathway in *** MTT colorimetric method was used to detect the influence of scutellarin on the survival rate of HCT116 *** the effect of scutellarin at various concentrations on cell morphology was observed by *** scratch experiment was used to detect the influence of scutellarin on the migration of HCT116 ***33342/PI double staining method was used to detect the effect of scutellarin on the apoptosis of HCT116 *** blotting method was used to assess the action of scutellarin on the expressions of Hippo signaling pathway-related proteins Mst1,Lats1,YAP1,p-YAP(Ser127),TAZ,and its downstream effector proteins c-Myc and cyclin D1,as well as apoptosis-related proteins Bcl-2 and Bax in HCT116 *** Scutellarin significantly affected the morphology of HCT116 cells and reduced the survival rate of HCT116 ***33342/PI double staining showed that scutellarin effectively induced the apoptosis of HCT116 *** blotting analysis showed that the expression levels of Hippo signaling pathway-related proteins Mst1,Lats1,YAP1,TAZ and its downstream effector proteins c-Myc,cyclin D1 were down-regulated in a concentration-dependent manner by scutellarin,and the expression of p-YAP(ser127)was ***,scutellarin substantially lessened the expression level of apoptosis-related protein Bcl-2,and promoted the protein level of *** Scutellarin may inhibit the proliferation and migration of HCT116 cells,while induce its apoptosis,potentially by activation of Hippo signaling pathway.

关键词： scutellarin colorectal cancer HCT116 cells Hippo signaling pathway

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Research advances in phytochemistry,pharmacology and toxicology of oleanolic acid

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中国药理学与毒理学杂志 2021年第10期35卷 770-771页

作者： REN shan SUN Qiang CHEN Li zeng sha ZHAO Hui LIU Mao-lun YANG Han MING Tian-qi LU Jin-jian XU Hai-bo State Key Laboratory of Southwestern Chinese Medicine Resources Department of PharmacologyChengdu University of Traditional Chinese MedicineChengdu 611137China Institute of Chinese Medical Sciences University of MacaoMacaoChina

Oleanolic acid(OA)is a pentacyclic triterpenoid chemical component that exists in natural plants with a molecular formula of C30H48O3 and a molecular weight at 456.71 g·*** is widespread in traditional Chinese herbal medicine(Ligustri Lucidi Fructus,Achyranthis Bidentate Radix,Red Sage)and berries(blueberries,grapes).In recent years,because of the extensive pharmacological effects of OA,its advantages in disease treatment have become increasingly prominent and gradually attracted the attention of pharmaceutical *** has effective therapeutic effects on a series of chronic diseases such as inflammation,cancer,diabetes,and cardiovascular diseases through multiple signaling pathways and various *** in cancers,such as colorectal cancer,liver cancer,gastric cancer,lung cancer,breast cancer and other malignancies,OA presents substantial ***,its poor aqueous solubility,needy bioavailability,and unsatisfactory pharmacological activity excessively restrict its clinical *** importantly,the improper utilization of OA can cause adverse reactions,toxic effects and even damage to organs in some specific *** the discovery of various pharmacological effects,the complex action mechanisms of OA,the continuous progress in structural modification of OA,as well as the synthesis of OA derivatives,its application is expanding *** numerous studies,there is a clear indication that OA and its derivatives,if fully developed,may provide an alternative and cheaper treatment for a variety of chronic ***,the specific molecular mechanisms of OA and its derivatives as an alternative therapy and supplementary therapy for cancer,diabetes,cardiovascular disease and other chronic diseases remain to be ***,it is necessary to further study the pharmacokinetics,pharmacological activity,specific targets and related mechanisms of OA to lay a solid foundation for drug development and the application o

关键词： oleanolic acid pharmacology toxicology derivatives review

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