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High-rate CH_(4)-to-C_(2)H_(6) photoconversion enabled by Au/ZnO porous nanosheets under oxygen-free system

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Science China Chemistry 2024年第3期67卷 869-875页

作者： Kai Zheng Xiaojing Zhang Jun Hu Chengbin Xu Juncheng Zhu Jing Li Mingyu Wu Shan Zhu Li Li Shumin Wang yumei Lv Xin he Ming Zuo Chengyuan Liu Yang Pan Junfa Zhu Yongfu Sun Yi Xie hefei National Laboratory for Physical Sciences at Microscale National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China State Grid Anhui Electric Power Research Institute Hefei 230601China

Photocatalytic CH_(4) coupling into high-valued C_(2)H_(6) is highly attractive,whereas the photosynthetic rate,especially under oxygen-free system,is still ***,we designed the negatively charged metal supported on metal oxide nanosheets to activate the inert C-H bond in CH_(4)and hence accelerate CH_(4) coupling *** an example,the synthetic Au/ZnO porous nanosheets exhibit the C_(2)H_(6) photosynthetic rate of 1,121.6μmol g^(-1)_(cat)h^(-1)and the CH_(4) conversion rate of 2,374.6μmol g^(-1)_(cat)h^(-1) under oxygen-free system,2 orders of magnitude higher than those of previously reported *** virtue of several in situ spectroscopic techniques,it is established that the generated Au^(δ-)and O^-species together polarized the C-H bond,while the Au^(δ-)and O^-species jointly stabilized the CH_(3) intermediates,which favored the coupling of CH_(3) intermediate to photosynthesize C_(2)H_(6) instead of overoxidation into CO_(x).Thus,the design of dual active species is beneficial for achieving high-efficient CH_(4)-to-C_(2)H_(6) photoconversion.

关键词： dual surface-active sites selective methane coupling ethane room temperature

Construction of cytomegalovirus promoter-driven gene expression system in Laodelphax striatellus

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Insect Science 2024年第3期31卷 720-732页

作者： Xiaohui Cheng Wan Zhao Guohua Liang Hong Lu yumei Fu Yiming Li Feng Cui State Key Laboratory of Integrated Management of Pest Insects and Rodents Insttute of ZoologyChinese Academy of SciencesBejingChina University of Chinese Academy of Sciences BejingChina School of Life Sciences Hebei UniversityBaodingHebei China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBejingChina Institute of Wetland Ecology&Clone Ecologyl Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou UniversityTaizhouZhejiangChina

The small brown planthopper(SBPH,Laodelphax striatellus)is a significant rice pest,responsible for transmitting rice stripe virus(RSV)in a persistent and propagative *** is one of the most detrimental rice viruses,causing rice stripe disease,which results in considerable loss of rice grain *** RNA interference and gene knockout techniques have enabled gene downregulation in SBPH,no system currently exists for the overexpression of endogenous or exogenous ***,the development of a protein expression system for SBPH is imperative to serve as a technical foundation for pest control and gene function *** study aimed to construct an expression vector using the promoter of the constitutive-expressed tubulin gene of SBPH,and promoter of human cytomegalovirus(CMV).Fluorescence experiments demonstrated that both tubulin and CMV promoter could drive green fluorescent protein(GFP)expression in SBPH,and could also facilitate the expression of a nucleocapsid protein(NP)-GFP fusion protein containing viral NP with comparable *** expression vector optimization,we have identified that the 3 tandem CMV promoters display a significantly higher promoter activity compared with both the 2 tandem CMV promoters and the single CMV *** addition,the incorporation of Star polycation nanoparticles significantly enhanced the expression efficiency in *** results provide a promising technical platform for investigating gene functions in SBPH.

关键词： cytomegalovirus promoter gene expression system nanoparticle small brown planthopper

构建四川省工业企业自主创新能力评价指标体系研究

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改革与战略 2008年第10期24卷 144-146页

作者：何玉梅黄晴成都理工大学商学院四川成都610059 成都市经济委员会四川成都610059

自主创新是发展中国家调整经济结构和提高国家竞争力的必然选择。我国正处于走新型工业化道路的关键时期,研究评测工业企业自主创新能力指标体系的理论与应用尚处于起步阶段,研究成果有限,研究内容也在不断探索中。文章基于此背景,分析... 详细信息

自主创新是发展中国家调整经济结构和提高国家竞争力的必然选择。我国正处于走新型工业化道路的关键时期,研究评测工业企业自主创新能力指标体系的理论与应用尚处于起步阶段,研究成果有限,研究内容也在不断探索中。文章基于此背景,分析了国内外"创新"指标设计领域的研究现状,阐述了自主创新能力评测指标体系的设计思路,从深度和广度方面设计了影响创新能力的指标体系的测度框架,构建四川省工业企业创新能力的评价指标体系。

关键词：工业企业自主创新能力测度框架指标体系

Selective cyclohexane oxidation enhancement by electronic structures regulation of metal-poly(ionic liquid)s

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Green Chemical Engineering 2024年第2期5卷 213-221页

作者： Ying Jin Shengxin Chen Ruirui Wang yumei Liu Xinxin Li Yingwei Li Ruirui Zhang Ruixia Liu henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou450001China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringInnovation Academy for Green ManufactureCASBeijing100190China

Poly(ionic liquids)(PILs)combined with the macromolecular structure and unique properties of ionic liquids show unlimited potential in *** this work,a series of metal-based PIL with different ionic ratios were prepared for the selective oxidation of *** analysis reveals that different degrees of ionization could adjust the Co-N sites of the catalysts efficiently,leading to significant changes in their electronic structure,which strongly relate to catalytic performance in oxidation.20.07%cyclohexane conversion and 13.06%cyclohexanone and cyclohexanol(KA oil)yield can be achieved by metal-based PILs that are better than other commercial *** with CoCl_(2),metal-based PILs perform well,with superior conversion and KA oil *** interestingly,the catalyst created in this study features a malleable Co-N site,which may potentially have an impact on how oxygen species adsorb and desorb from the ***,the catalyst studied in this work is used as molecular oxygen for the selective oxidation of cyclohexane to produce KA oil,and its application prospect is promising.

关键词： Metal-PILs Cyclohexane oxidation C-H activation Co-N sites

Study on the anti-inflammatory mechanism of moxibustion in rheumatoid arthritis in rats based on phospholipaseA2 signaling inhibition by Annexin 1

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Journal of Traditional Chinese Medicine 2024年第4期44卷 753-761页

作者： GUO Yanding LUO Kun ZHANG Linlin LU Wenting SHANG Yanan ZHONG yumei HU Danhui YANG Xin ZHOU Haiyan Department of Acupuncture-Moxibustion and Tuina the Third Affiliated HospitalChengdu University of Traditional Chinese MedicineChengdu 610075China External Treatment Center First People's Hospital of ChengduChengdu 610095China Department of Chengdu Integrated Traditional Chinese Medicine and Western Medicine Hospital Chengdu 610075China Department of health Rehabilitation School Chengdu University of Traditional Chinese MedicineChengdu 610075China

OBJECTIVE:To determine whether moxibustion had an anti-inflammatory effect on rheumatoid arthritis(RA)by regulating Annexin 1 expression and interfering with the phospholipaseA2 signaling ***:Thirty male Sprague-Dawley rats were randomly categorized into five groups(six rats per group):blank control(CON)group,RA model(RA)group,moxibustion(MOX)group,Annexin 1 lentiviral intervention(RNAi-Anxa1)group,and Annexin 1 lentiviral intervention+moxibustion(RNAi-Anxa1+MOX)*** rats in the RNAi-Anxa1 and the RNAi-Anxa1+MOX groups were injected with the lentiviral vector-mediated RNAi-Anxa1 into the rat foot *** experimental RA rat model was established by injecting Freund's complete adjuvant(FCA)into the RA,MOX,RNAi-Anxa1,and RNAi-Anxa1+MOX *** in the MOX and RNAiAnxa1+MOX groups received moxibustion *** modeling,using moxibustion“Shenshu(BL23)”and“Zusanli(ST36)”,each point is 5 times,bilateral alternating,once a day,6 times for a course of treatment,between the courses of rest for a one day.A total of three treatment courses were *** bilateral pad thicknesses were measured using Vernier calipers on experimental days 1,7,14,21,and *** expression of cPLA2αsignaling in the synovium of diseased joints was observed using Western *** pathology of the rat ankle synovium was observed using hematoxylineosin(he)***(IL)-1β,IL-10,prostaglandin E2(PGE2),and leukotriene B4(LTB4)were detected using enzyme-linked immunosorbent ***:Moxibustion increased the levels of Annexin 1 and decreased the inflammatory response in rats with *** increasing the expression of Annexin 1,the phosphorylated expression of cPLA2αwas inhibited,the serum levels of IL-1β,PGE2,and LTB4 decreased,and the level of IL-10 *** moxibustion treated RA rats after the Annexin 1 lentiviral intervention,the serum levels of IL-1β,PGE2,LTB4,and IL-10 were almost ***:Moxibustion enhanced the negative regulation of

关键词： annexins group IV phospholipases A2 signal transduction moxibustion arthritis,rheumatoid

利用背景噪声成像研究合肥-金华剖面地壳速度结构及径向各向异性的东西差异

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地球物理学报 2018年第2期61卷 584-592页

作者：吴珊珊姜明明何玉梅赵亮艾印双中国科学院地球与行星物理重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院大学北京100049 中国科学院青藏高原地球科学卓越创新中心北京100101 岩石圈演化国家重点实验室中国科学院地质与地球物理研究所北京100029

背景噪声成像能够为地壳内部结构提供地震波速的观测证据,能够增进对地壳结构与物性的认识.本文利用背景噪声成像方法对合肥—金华流动地震台阵55个台站数据进行了分析反演,获得了华北克拉通与华南块体东部构造边界附近区域的地壳S波速... 详细信息

背景噪声成像能够为地壳内部结构提供地震波速的观测证据,能够增进对地壳结构与物性的认识.本文利用背景噪声成像方法对合肥—金华流动地震台阵55个台站数据进行了分析反演,获得了华北克拉通与华南块体东部构造边界附近区域的地壳S波速度与径向各向异性结构.成像结果表明,以东经118°—118.5°附近为界,西北部表现为地壳低速异常和中下地壳正的径向各向异性,东南部表现为地壳高速异常,下部地壳存在负的径向各向异性.由此,本文推测地震波速结构差异反映了地壳内部物质与温度的差异,这种差异与两个地区自中生代晚期以来经历了截然不同的岩浆活动相关.

关键词：地壳S波速度径向各向异性背景噪声层析成像合肥金华地震观测剖面

局部流水FFT处理器地址产生和系数存储负载的设计（英文）

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宁夏大学学报（自然科学版） 2014年第4期35卷 315-323页

作者：和玉梅北方民族大学电气信息工程学院宁夏银川750021

快速傅立叶变换(FFT)是数字信号处理中一种非常重要的算法,局部流水结构是一种实现嵌入式实时FFT处理器设计的有效结构.针对局部流水FFT处理器,主要推导了基于基16FFT第一地址生成公式的转换,并与我们提出的地址产生方法、操作数地址生... 详细信息

快速傅立叶变换(FFT)是数字信号处理中一种非常重要的算法,局部流水结构是一种实现嵌入式实时FFT处理器设计的有效结构.针对局部流水FFT处理器,主要推导了基于基16FFT第一地址生成公式的转换,并与我们提出的地址产生方法、操作数地址生成方法、系数存储负载策略及系数地址生成方法进行了对比分析.为有效解决局部流水结构FFT处理器的数据流控制问题提供参考.

关键词：快速傅里叶变换局部流水蝶形地址产生

A strategy for mechanically integrating robust hydrogeltissue hybrid to promote the anti-calcification and endothelialization of bioprosthetic heart valve

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Regenerative Biomaterials 2024年第2期3卷 123-136页

作者： Haoshuang Wu Nuoya Chen Tiantian Zheng Li Li Mengyue Hu yumei Qin Gaoyang Guo Li Yang Yunbing Wang National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610065China Institute of Clinical Pathology West China Hospital of Sichuan UniversityChengdu 610041China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065China

Bioprosthetic heart valve(BHV)replacement has been the predo-minant treatment for severe heart valve diseases over *** clinically available BHVs are crosslinked by glutaraldehyde(GLUT),while the high toxicity of residual GLUT could initiate calcification,severe thrombosis,and delayed ***,we construed a mechanically integrating robust hydrogel-tissue hybrid to improve the performance of *** particular,recombinant humanized coilagen type Ⅲ(rhCOLⅢ),which was precisely customized with anti-coagulant and pro-endothelialization bioactivity,was first incorporated into the polyvinyl alcohol(PVA)-based hydrogel via hydrogen bond ***,tannic acid was introduced to enhance the mechanicalperfo of PVA-based hvdrogel and interfacial bonding between the hydrogel layer and bio-derived tissue due to the strong affinity for a wide range of *** vitro and in vivo experimental results confirmed that the GLUT-crosslinked BHVs modified by the robust PVA-based hydrogel embedded rhCOLII and TA possessed long-term anti-coagulant,accelerated endothelialization,mild inflammatory response and anti-calcification ***,our mechanically integrating robust hydrogel-tissue hybrid strategy showed the potential to enhance the service function and prolong the service life of the BHVs after implantation.

关键词： bioprosthetic heart valves recombinant humanized collagen typeⅢ endothelialization anti-calcification anti-coagulation

Covalent organic framework-based solid-state electrolytes for advanced batteries

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Science China Chemistry 2024年

作者： Desheng Feng Zhen Qin yumei Ren Yuxi Xu School of Materials Science and Engineering Zhengzhou University of Aeronautics School of Engineering Westlake University

The emergence of solid-state batteries (SSBs) has generated significant interest in the field of energy storage, primarily due to their advantages such as high safety, high energy density and long lifetime. Solid state electrolytes (SSEs) play a crucial role in SSBs, which not only affects the ion transport efficiency, but also relates to the overall performance and stability of the *** recent years, SSEs based on covalent organic frameworks (COFs) have become a research focus in the battery field because of their unique structural characteristics and excellent performance. This review aims to provide an overview of the application and latest progress of COF-based SSEs in the field of advanced batteries. Firstly, the structural features of COFs and their advantages as SSEs are briefly introduced, followed by a summary of the types of COF-based SSEs (including neutral COF-based SSEs and ionic COF-based SSEs). The latest research progress in lithium ion batteries (LIBs), lithium metal batteries (LMBs), proton exchange membrane fuel cells (PEMFCs) and other advanced batteries recently is also discussed. Finally, we summarize and outlook the current research status, the challenges faced in practical application, the future research directions and application prospects of COF-based SSEs.

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