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Nonresonant Metamaterials with an Ultra-High Permittivity

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Chinese Physics Letters 2011年第5期28卷 242-244页

作者： HE Xiao-Yang CHEN Qi li lin-cui YANG Chun li Biao ZHOU Bang-Hua TANG Chuan-Xiang Department of Engineering Physics Tsinghua UniversityBeijing 100084 Institute of Electronic Engineering China Academy of Engineering PhysicsMianyang 621900

A nonresonant structure composed of metal cut-wires for realization of metamaterials is *** kind of metamaterial works at an ultra broad bandwidth with uniform *** analysis and numerical simulations are carried out to study this inclusion and expression for the effective permittivity is *** methods are studied to enhance the permittivity and a nonresonant metamaterial with an ultra-high permittivity is obtained.A demonstration shows that the permittivity of this metamaterial can be as high as 145.

关键词： permittivity realization Permittivity

Lovastatin changes activities of lactate dehydrogenase A and B genes in rat myocardial cells

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Chinese Medical Journal 2011年第3期124卷 423-428页

作者： GUO Wei-zao JI Hong YAN Zhi-hong li lin li Di LU cui-lian Department of Geriatrics Aerospace Central Hospital Beijing 100049 China

Background Lactate dehydrogenase （LDH） is a crucial regulator of energy metabolism in many organs including the heart. Lovastatin is widely used in prevention and treatment of coronary heart disease and is a drug with substantial metabolic influences. Our study aimed to determine the activities of the lactate dehydrogenase A and B （LDHA and LDHB）genes following lovastatin *** The rat myocardial cell line H9c2（2-1） in culture was exposed to 100 nmol/L lovastatin for 24 hours or for five days. The functions of the LDHA and LDHB genes were examined at the transcriptional （mRNA） level with quantitative real-time polymerase chain reaction （Q-RT-PCR）, and at the translational （protein） level with *** When compared with control levels, the LDHA mRNA went up by （151.65±16.72）% （P=0.0132） after 24 hours and by （175.28±56.54）% （P=0.0366） after five days of lovastatin treatment. Although 24 hours of lovastatin treatment had no significant effects on LDHB mRNA levels, when the treatment was extended to five days, LDHB mRNA levels were significantly down-regulated to （63.65±15.21）% of control levels （P=0.0117）. After 24 hours of treatment with lovastatin,there were no significant changes in protein levels of either LDHA or LDHB. When treatment time was extended to five days, the protein levels of LDHA were up-regulated by （148.65±11.81）% （P=0.00969）, while the protein levels of LDHB were down-regulated to （64.91±5.47）% of control levels （P=0.0192）.Conclusions Lovastatin affects gene activities of LDHA and LDHB differently, which may reveal novel pharmacological effects of lovastatin.

关键词： lovastatin lactate dehydrogenase coronary heart disease gene metabolism

SIMULTANEOUS DETERMINATION OF EPHEDRINE AND ITS ANALOGUES IN URINE BY CAPILLARY GAS CHROMATOGRAPHY

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Chinese Chemical Letters 1990年第2期1卷 175-178页

作者： lin li Jian Fang cui Kai Rong cui Yi ZHOU Mu Zou WANG Tong Hui ZHOU (Institute of Materia Medica,Chinese Academy of Medical Sciences,Beijing 100050)

A method is developed for the simultaneous determination of ephedrine,pseudoephedrine, norephedrine, norpseudoephedrine and methylephedrine in urine on a capillary column using nitrogen-phosphorus *** is used as the i... 详细信息

关键词： GAS IV SIMULTANEOUS DETERMINATION OF EPHEDRINE AND ITS ANALOGUES IN URINE BY CAPILLARY GAS CHROMATOGRAPHY ITS

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黄土湿陷对渗透系数影响的试验研究

中国公路学报 2017年第6期30卷 198-208,222页

作者：李喜安洪勃李林翠王力长安大学地质工程与测绘学院陕西西安710054

针对湿陷性黄土地区工程建设中常常遇到"渗透-湿陷-渗透"这一反复发生的复杂过程所带来的一系列工程问题,开展了黄土湿陷后渗透性试验研究。基于室内湿陷渗透试验,结合扫描电子显微镜(SEM)和图像处理软件(IPP)分析等手段,通过试验对比... 详细信息

针对湿陷性黄土地区工程建设中常常遇到"渗透-湿陷-渗透"这一反复发生的复杂过程所带来的一系列工程问题,开展了黄土湿陷后渗透性试验研究。基于室内湿陷渗透试验,结合扫描电子显微镜(SEM)和图像处理软件(IPP)分析等手段,通过试验对比研究了黄土湿陷前后土体的渗透系数、微结构、孔隙大小分布、孔隙形状及连通性的变化,以揭示黄土湿陷对其渗透性的影响规律及其微观机理。结果表明:渗透过程和湿陷过程相互影响,黄土的多孔结构是影响渗透性及湿陷性的主要内因;湿陷后黄土较原状黄土的渗透性明显变差,原状黄土多孔结构遭到破坏,颗粒接触方式有所变化,使得颗粒排列变密实,且孔隙连通性降低,从而导致渗透系数明显下降(为原状黄土的25%~33%);土的结构和构造、可溶盐的溶解和土中胶结物的溃散、土中孔隙的大小与数量以及连通性变化是黄土湿陷对渗透性影响的重要因素,多因素共同作用使得湿陷后土体渗透系数降低;试验结果可为湿陷性黄土地区的工程设计与施工提供可借鉴的基础理论依据。

关键词：道路工程黄土湿陷湿陷渗透试验渗透系数可溶盐多孔结构

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-cui Mao Hui-lin Jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Synergistic promotion strategy of “dual-site” and “dual-path” to enhance the C–C coupling between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energy Chemistry 2025年第1期100卷 39-49页

作者： Hongqiang Yang Jianfeng Zheng Guoyu Wang Yifei Gao Yatao Yang Jia li Xiaojin Han Yan cui Zhanggen Huang National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technology

Photoelectrocatalytic coupling CO2and volatile organic compounds （VOCs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrogen evolution of ***,a modified g-C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO generated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between CO2and HCHO simultaneously driven by light and electricity.

关键词： Photoelectrocatalysis Z-scheme C–C coupling Ethanol

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1998年上海市神经科学学会年会论文摘要

Neuroscience Bulletin 1999年第1期 69-87页

作者： OUYANG Wei,HUANG Ya lin,DA cui li,CHENG Jie Shi(National Laboratory of Medical Neurobiology,Shanghai Medical University,Shanghai 200032)

ＭＰＴＰ诱导褐鼠黑质的胰岛素原样α肽同源ＥＳＴ的差异表达徐磊１吕立夏１杨秀丽２刘振国２李学礼１陈生弟２王尧１（１上海铁道大学生化教研室；２上海第二医科大学附属瑞金医院神经内科）帕金森病（Ｐａｒｋｉｎｓｏｎｄｉｓｅａｓ... 详细信息

ＭＰＴＰ诱导褐鼠黑质的胰岛素原样α肽同源ＥＳＴ的差异表达徐磊１吕立夏１杨秀丽２刘振国２李学礼１陈生弟２王尧１（１上海铁道大学生化教研室；２上海第二医科大学附属瑞金医院神经内科）帕金森病（Ｐａｒｋｉｎｓｏｎｄｉｓｅａｓｅ，ＰＤ）是一种以震颤、强直、运动...

关键词： bFGF focal cerebral ischemia fluoro immunohistochemistry

两种肉桂酸肟酯衍生物的合成及其与人血清白蛋白的结合

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发光学报 2017年第3期38卷 402-412页

作者：逯东伟吴啸宇谢宪喻凯荔林翠梧广西大学化学化工学院广西南宁530004 广西高校应用化学技术与资源开发重点实验室广西南宁530004

以间甲氧基肉桂酸、对位取代的苯甲醛为原料,设计合成了2种未见报道的肉桂酸肟酯类衍生物,并用MS、IR、1H NMR、13C NMR进行结构表征。采用分子对接技术和荧光光谱法、紫外-可见光谱法、位点竞争法研究了2种衍生物分别和人血清白蛋白(H... 详细信息

以间甲氧基肉桂酸、对位取代的苯甲醛为原料,设计合成了2种未见报道的肉桂酸肟酯类衍生物,并用MS、IR、1H NMR、13C NMR进行结构表征。采用分子对接技术和荧光光谱法、紫外-可见光谱法、位点竞争法研究了2种衍生物分别和人血清白蛋白(HSA)相结合的机理。通过Stern-Volmer方程等处理荧光猝灭相关数据得到了衍生物与HSA相互作用的结合常数和热力学参数。结合紫外-可见光谱对两种衍生物与HSA的相互作用进行了进一步的分析,结果表明在体外生理条件下,衍生物都可以与HSA结合,对HSA内源荧光产生静态猝灭并对其构象产生影响,其主要的结合力为氢键和范德华力。位点竞争实验表明衍生物与HSA相互作用都发生在Sudlow site 1(亚域ⅡA)处。以上实验结果均验证了分子模拟对实验的预测。

关键词：肉桂酸肟酯光谱法位点竞争人血清白蛋白分子对接

Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong Hu Wenyi lian Kang Hu Qiuju li Xueliang cui Tengyu Yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)