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Carbon nanotubes prepared by anodic aluminum oxide template method

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Chinese Science Bulletin 2012年第2期57卷 187-204页

作者： HOU PengXiang LIU Chang SHI Chao CHENG HuiMing Shenyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

One of the most unique structural characteristics of carbon nanotubes(CNTs) differentiating from other carbon materials is their hollow nanochannles,which can be utilized for encapsulating and loading foreign *** anodic aluminum oxide(AAO) template technique enables the diameter,length,and cap structure control of the replicated CNTs,and thus shows advantages in pore structure control over the traditional CNT growth *** review details the synthesis of CNTs with tunable diameter,length,wall thickness,and crystalline by using the AAO template *** doping of heteroatoms and filling of foreign matters into AAO-CNTs are also ***,the main challenges and developing trends of the AAO template method are discussed.

关键词：阳极氧化铝碳纳米管模板法结构控制多孔氧化铝模板技术发展趋势 AAO

PA-E18G substitution in influenza A virus confers resistance to ZX-7101,a cap-dependent endonuclease inhibitor

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Virologica Sinica 2023年第4期38卷 559-567页

作者： Dan Luo Qing Ye Rui-Ting Li Hang-Yu Zhou Jing-Jing Guo Suo-Qun Zhao Sen Zhang Tao Jiang Yong-Qiang Deng Cheng-Feng Qin State Key laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing 100071China State Key laboratory of Medical Molecular Biology Suzhou Institute of Systems MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeSuzhou 215123China

cap-dependent endonuclease(CEN)in the polymerase acidic protein(PA)of influenza A virus(IAV)represents a promising drug target due to its critical role in viral gene *** CEN inhibitor,baloxavir marboxil(BXM),was approved in Japan and the US in 2018 and several other countries *** with the clinical use of BXM,the emergence and spread of IAV variants with reduced susceptibility to BXM have aroused serious ***,we comprehensively characterized the in vitro and in vivo antiviral activities of ZX-7101A,an analogue of *** active form of prodrug ZX-7101 showed broad-spectrum antiviral potency against various IAV subtypes,including pH1N1,H3N2,H7N9 and H9N2,in MDCK cells,and the 50%effective concentration(EC_(50))was calculated to nanomole level and comparable to that of baloxavir acid(BXA),the active form of ***,in vivo assays showed that administration of ZX-7101A conferred significant protection against lethal pH1N1 challenge in mice,with reduced viral RNA loads and alleviated pulmonary ***,serial passaging of H1N1 virus in MDCK cells under selection pressure of ZX-7101 led to a resistant variant at the 15th *** genetic and sequencing analysis demonstrated that a single E18G substitution in the PA subunit contributed to the reduced susceptibility to both ZX-7101 and *** together,our results not only characterized a new CEN inhibitor of IAV but also identified a novel amino acid substitution responsible for CEN inhibitor resistance,which provides critical clues for future drug development and drug resistance surveillance.

关键词： Influenza virus cap-dependent endonuclease(CEN) Baloxavir marboxil(BXM) Drug resistance

Intense blue-emitting Ca_2PO_4Cl:Eu^(2+) phosphor for near-ultraviolet converting white light-emitting diodes

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Journal of Rare Earths 2010年第S1期28卷 250-253页

作者： Yi-Chen Chiu Chun-Kuei Chang Yao-Tsung Yeh Shyue-Ming Jang Material and Chemical Research Laboratories Industrial Technology Research Institute Phosphors Research laboratory and Department of Applied Chemistry National Chiao Tung University

A blue phosphor Ca2PO4Cl:Eu2+(cap:Eu2+) was synthesized by solid state *** Ca2PO4Cl:Eu2+ exhibited high quantum efficiency and excellent thermal *** luminescent intensity of Ca2PO4Cl:Eu2+ was found to be 128% under excitation at 380 nm,149% under 400 nm,and 247% under 420 nm as high as that of BaMgAl10O17:Eu2+.The optimal doping concentration was observed to 11 mol.% of cap:Eu2+.The energy transfer between Eu2+ ions in cap were occurred via electric multipolar interaction,and the critical transfer distance was estimated to be 1.26 nm.A mixture of blue-emitting Ca2PO4Cl:Eu2+,green-emitting(Ba,Sr)2SiO4:Eu2+ and red-emitting CaAlSiN3:Eu2+ phosphors were selected in conjunction with 400 nm chip to fabricate white LED *** average color-rendering index Ra and correlated color temperature(Tc) of the white LEDs were found to be 93.4 and 4590 K,*** results indicated that it was a promising candidate as a blue-emitting phosphor for the near-UV white light-emitting diodes.

关键词： Ca2PO4Cl:Eu2+ phosphors luminscense rare earths

Enhanced spin diffusion length by suppressing spin-flip scattering in lateral spin valves

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Rare Metals 2015年第3期34卷 156-159页

作者： Lin-Jing Pan Le Wang Li-Yuan Zhang Department of Physics Renmin University of China Beijing Key laboratory of Opto-electronic Functional Materials and Micro-nano Devices Renmin University of China

The spin transport was investigated in permally （Py）/MgO/Ag junction with lateral spin valve structure. Non-local lateral spin valves measurement was carried out to determin, the apin accumulignal in Ag strip, and the spin dif u^sion - length in Ag of the lateral spin valves was extracted from devices with the different distances between injector and detector. The experimental results are found that spin accumulation and spin diffusion length （2s） could be significantly enhanced in Ag strip with MgO capping layer, and those effects may be attributed to the low-surface spin scattering rate in Ag with an MgO cap- ping layer.

关键词： Spin accumulation Spin diffusion length Lateral spin valve Spin scattering

New hybrid encapsulation for flexible organic light-emitting devices on plastic substrates

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Chinese Science Bulletin 2008年第6期53卷 958-960页

作者： LIU Song ZHANG DeQiang LI Yang DUAN Lian DONG GuiFang WANG LiDuo QIU Yong Key laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084China

The hybrid encapsulation for flexible organic light-emitting devices on plastic substrate was investi- gated. The hybrid encapsulation consisted of four periods of Alq3/LiF layers as the pre-encapsulation layer and a flexible aluminum foil coated with getter as the encapsulation cap. We measured the device lifetime at a continuous constant current of 20 mA/cm2, which corresponded to an initial luminance of 2000 cd/m2. The half-luminance decay time of the encapsulated device was about 458 h. More over, the hybrid encapsulation is ultrathin and flexible, ensuring device bendability.

关键词：有机发光设备可变形显示器混合包装使用寿命

CO_2 long-term diffusive leakage into biosphere in geological carbon storage

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Chinese Science Bulletin 2014年第28期59卷 3686-3690页

作者： Qin-Yi Li Qun Chen Xing Zhang Key laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Engineering MechanicsTsinghua University

Prediction of CO2 leakage into biosphere is very important for risk assessment in geological carbon storage projects. Underground CO2 can be transported into biosphere through short term leakage due to fractures of wellbores or cap rocks, which has been extensively investigated, and long term leakage due to diffusion, which has few relevant studies. This paper presents a diffusive model for CO2 gradual leakage into biosphere during a long period after CO2 injection. First, the paper describes a general diffusive model with long term secondary trapping effects for CO2 fluxes from underground into biosphere. Secondly, a simplified one-dimensional model is presented and solved for the CO2 concentrations in groundwater. The results show that the groundwater CO2 concentration will reach the maximum value at about 50 th year after CO2 injection and then slowly decrease due to secondary trapping ***, the partition coefficient is the dominant parameter for predicting the groundwater CO2 concentration while the convective mass transfer coefficient plays an insignificant role.

关键词： CO2浓度扩散模型生物圈碳储存泄漏地质二氧化碳浓度质量传递系数

Roles of gypsum/salt-bearing sequence in hydrocarbon accumulation and storage

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能源地球科学(英文) 2023年第1期4卷 93-102页

作者： Wenhui Liu Yining Li Quanyou Liu Xiaofeng Wang Qingqiang Meng Dianwei Zhang Longfei Lu Houyong Luo Department of Geology State Key Laboratory of Continental DynamicsNorthwest UniversityXi'anShaanxi710069China Petroleum Exploration&Production Research Institute SINOPECBeijing100083China Sinopec Key laboratory of Petroleum Accumulation Mechanisms WuxiJiangsu214151China

Gypsum/salt beds are widely developed in petroliferous basins across the *** basins with gypsum/salt beds have been proven to host abundant hydrocarbon *** studies on the effects of gypsum/salt beds on hydrocarbon reservoirs primarily focused on their excellent sealing property as cap ***,an increasing number of exploration discoveries have shown that gypsum/salt beds have the potential to promote the formation of high-quality source rocks and hydrocarbon ***/salt beds influence the generation,preservation and accumulation of *** on the systematic analysis of the generation of hydrocarbons in global gypsum/saltbearing sequences,the study discussed the control of gypsum/salt beds on play elements,and explore the relationship between the development of gypsum/salt beds and global large-and medium-scale hydrocarbon ***,we analyzed the correlation between typical gypsum/saltbearing sequences and their hydrocarbon generation potentials in ***-depth analysis shows three patterns in terms of the spatial superimposition of gypsum/salt beds and source rocks,that is,postsalt pattern,inter-salt pattern and pre-salt *** others,the source rocks of the inter-salt pattern are widely developed in salt basins and of great potential for hydrocarbon exploration.

关键词： Gypsum/salt bed Hydrocarbon reservoir Source rock Play element

Differential Characteristics of the Upper Ordovician-Lower Silurian Wufeng-Longmaxi Shale Reservoir and its Implications for Exploration and Development of Shale Gas in/around the Sichuan Basin

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 520-535页

作者： WANG Ruyue HU Zongquan LONG Shengxiang LIU Guangxiang ZHAO Jianhua DONG Li DU Wei WANG Pengwei YIN Shuai SINOPEC Petroleum Exploration and Production Research Institute Beijing 100083China SINOPEC Key laboratory of Shale Gas/Oil Exploration&Production Beijing 100083China State Key laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China School of Geosciences China University of Petroleum(East China)Qingdao 266580ShandongChina Shandong Provincial Key laboratory of Depositional Mineralization&Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590ShandongChina

The Upper Ordovician Wufeng-Lower Silurian Longmaxi shale is widely distributed in the Sichuan Basin and its periphery,which is the key stratum for marine shale gas exploration and development(E&D)in *** on sedimentary environment,material basis,storage space,fracability and reservoir evolution data,the reservoir characteristics of the Wufeng-Longmaxi shale and their significance for shale gas E&D are systematically compared and analyzed in this *** results show that(1)the depocenter of the Wufeng(WF)-Longmaxi(LM)shale gradually migrates from east to *** high-quality shale reservoirs in the eastern Sichuan Basin are mainly siliceous shales,which are primarily distributed in the graptolite shale interval of *** high-quality reservoirs in the southern Sichuan Basin are mainly calcareous-siliceous and organic-rich argillaceous shales,which are distributed in the graptolite shale interval of WF2-LM7.(2)Deep shale gas(the burial depth>3500 m)in the Sichuan Basin has high-ultrahigh pressure and superior physical *** organic-rich siliceous,calcareous-siliceous and organic-rich argillaceous shales have suitable reservoir *** marginal area of the Sichuan Basin has a higher degree of pressure relief,which leads to the argillaceous and silty shales evolving into direct cap rocks with poor reservoir/good sealing capacity.(3)Combining shale gas exploration practices and impacts of lithofacies,depth,pressure coefficient and brittle-ductile transition on the reservoir properties,it is concluded that the favorable depth interval of the Wufeng-Longmaxi shale gas is 2200~4000 m under current technical conditions.(4)Aiming at the differential reservoir properties of the Wufeng-Longmaxi shale in the Sichuan Basin and its periphery,several suggestions for future research directions and E&D of shale gas are formulated.

关键词： shale gas reservoir physical property fracability evolution Wufeng Formation Longmaxi Formation,Sichuan Basin

Seismic Sedimentology Study in the High-Resolution Sequence Framework——A Case Study of Platform Margin Reef-Beach System of Changxing Formation,Upper Permian,Yuanba Area,Northeast Sichuan Basin,China

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Journal of Earth Science 2012年第4期23卷 612-626页

作者：陈雷陆永潮郭彤楼邢凤存焦养泉 Key laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Southern Exploration and Development Division Company of SINOPEC Institute of Sedimentary Geology Chengdu University of Technology State Key laboratory of Oil/Gas Reservoir Geology and Exploitation Chengdu University of Technology Faculty of Earth Resources China University of Geosciences

The Yuanba （元坝） area is considered another potential large-scale reef-bank gas field following the Puguang （普光） field. However, there are lots of difficulties on the spatial and temporal distribution of reef-beach and the detailed prediction of the effective reservoir in the sequence stratigraphic framework. In this paper, based on the seismic data, well, log and core, we conduct a high-resolution sequence division and build an isochronal sequence stratigraphic framework for the Changxing （长兴） Formation by the methods of wavelet transformation, FMI, etc.. Then, the corresponding relationship among the lithologic facies, logging facies, seismic facies, seismic attribute facies and reservoir of Changxing Formation were established through well-seismic calibration and geological-geophysical modeling. Furthermore, detailed study on the spatial and temporal distribution of microfacies of the reef-beach was carried out by means of seismic attribute extraction. Meanwhile,combined with impedance inversion, the spatial distribution of porosity of reef-beach reservoir was predicted. The results show that the revolution of the reef-beach system contains three stages which are initial bioclastic bank establishment stage, reef development stage and exposure stage. Also, porosity inversion shows that the region with high value of porosity is located in the reef cap, fore reef and back *** Sedimentology Study in the High-Resolution Sequence Framework

关键词： seismic sedimentology platform margin reef-beach system Changxing Formation,Yuanba area Northeast Sichuan basin.