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Science China Earth Sciences 2017年第3期60卷 452-462页

作者： li Hao li chaorong Kathleen KUMAN Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences School of Geography Archaeology and Environmental StudiesUniversity of the Witwatersrand

In this paper we report on Longgudong,an Early Pleistocene cave site in south China which was systematically excavated in 1999 and 2000,and where human teeth and associated stone artifacts were discovered within the same stratigraphic *** age of this site was estimated from faunal comparisons and palaeomagnetism and has been attributed to the Early Pleistocene,most probably the earlier Early *** human teeth from this site have been well ***,the stone artifacts are still unknown to most *** paper thus presents an analysis of the lithics as the first firmly demonstrated stone tools associated with Early Pleistocene human fossils in south China.

关键词： Longgudong Early Pleistocene Hominin teeth Stone artifacts

A simple approach to porous low-temperature-sintering BaTiO_3

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Science China Chemistry 2012年第9期55卷 1765-1769页

作者： li Yang liU Hu liU FaJia li chaorong CHEN BenYong DONG WenJun Center for Optoelectronics Materials and Devices Center for Nanoscience and NoanotechnologyKey Laboratory of Advanced TextileMaterials and Manufacturing TechnologyMinistry of EducationEngineering Research Center for Eco-Dying&Finishing of TextilesZhejiang Sci-Tech UniversityHangzhou 310018China

Porous tetragonal BaTiO 3 ceramic was successfully prepared by a combination of hydrothermal and low-temperature-sintering *** hollow TiO2@BaCO 3 as the sintering precursor was synthesized via a simple hydrothermal method,and then porous BaTiO 3 was generated by calcining the hollow TiO2@BaCO 3 precursor at 900 ℃ without *** hollow TiO2@BaCO 3 structure plays two important roles in the preparing of the porous BaTiO 3 ***,the TiO2@BaCO 3 hollow structure provides high surface areas and increases the contact points between BaCO 3 and TiO2,which can reduce the sintering temperature of the BaTiO 3 ***,the cavity of the ordered arranged TiO2@BaCO 3 hollow sphere shows important influence on the porous structure,and the pore size of the as-prepared porous BaTiO 3 ceramic can be tuned from several nanometers to hundreds nanomters by changing the sintering *** formation mechanism of the porous BaTiO 3 ceramic was proposed.

关键词： BaTi03 ceramics sintering porosity

Two-dimensional ultrathin MoS2-modified black Ti^3+-TiO2 nanotubes for enhanced photocatalytic water splitting hydrogen production

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Journal of Energy Chemistry 2020年第4期29卷 188-194页

作者： Wei Ou Jiaqi Pan Yanyan liu Shi li Hongli li Weijie Zhao Jingjing Wang Changsheng Song Yingying Zheng chaorong li Key Laboratory of Optical Field Manipulation of Zhejiang Province and Key Laboratory of ATMMT ministry of EducationDepartment of PhysicsZhejiangSci-Tech UniversityHangzhou 310018ZhejiangChina School of Medical and Pharmaceutical Engineering Taizhou Vocational&Technical CollegeTaizhou 318000ZhejiangChina

Two-dimensional (2D) ultrathin MoS2-modified black Ti^3+-TiO2 nanotubes were fabricated using an electrospinning-hydrothermal treatment-reduction *** TiO2 nanotubes were fabricated via ***,2D MoS2 lamellae were grown on the surface of the nanotubes and Ti^3+/Ov ions were introduced by *** photocatalytic performance of the 2D MoS2/Ti^3+-TiO2 nanotubes was^15 times better than that of *** HER enhancement of the MoS2/Ti^3+-TiO2 nanotubes can be attributed to the Pt-like behavior of 2D MoS2 and the presence of Ti^3+-ions,which facilitated the quick diffusion of the photogenerated electrons to water,reducing the H2 activation *** presence of Ov ions in the nanotubes and their hollow structure increased their solar utilization.

关键词： 2D MoS2 TiO2 nanotubes Ti^3+self-doping Photocatalytic hydrogen production

Photoluminescence of C_(60) Single Crystals

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Chinese Physics Letters 1995年第5期12卷 317-320页

作者： li chaorong WANG Gang ZHANG Jiaming MAI Zhenhong ZHAO Tienan XU Lu XIE Sishen Institute of Physics Academia SinicaBeijing 100080 Shanghai Institute of Technical Physics Academia SinicaShanghai 200083

The photoluminescence(PL)spectra of C_(60) single crystals grown under double temperature gradient(DTG)and single temperature gradient(STG)techniques were investigated at room *** results show that the PL emission intensity increases first and then decreases with increasing illuminated power density for the C_(60) single crystals grown by both DTG and STG ***,one main peak with a shoulder peak can be clearly distinguished at low illumination,while only one main peak without the shoulder peak can be seen at high *** main peak undergoes a continuous blue shift and broadening with the increase of illuminated power *** difference of PL emission energy at the same illumination density of DTG and STG samples may correlated with the degree of both the orientational disorder of C_(60) molecule and lattice *** Laue diffraction patterns show that the DTG sample has stronger strains and poorer crystalline quality than the STG sample.

关键词： temperature. density. illumination

Hetero-nanostructure of silver nanoparticles on MO_x(M=Mo,Ti and Si) and their applications

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Science China Chemistry 2011年第6期54卷 865-875页

作者： DONG WenJun ZHAO HaiXin li chaorong MEI Jie CHEN BeYong TANG WeiHua SHI Zhan FENG ShouHua Center for Optoelectronics Materials and Devices Center for Nanoscience and Nanotechnology ' Key Laboratory of Advanced TextileMaterials and Manufacturing Technology Ministry' of Education' Engineering Research Center for Eco-Dying & Finishing q[' Textiles' Zhejian g Sci- Tech UniversiO' Han gzhou 310018 China State Key Laboratory of Inorganic Synthesis and Preparative Chemisto' College of Chemistry Jilin University Changchun 130012 China

This paper reviews the recent research progress in the hetero-nanostructure of silver nanoparticles on MOx (M=Mo, Ti and Si). It describes the general synthesis of hetero-nanostructure of silver nanoparticles on MOx, and then outlines the interesting catalytic and sensing properties found in these hetero-nanostructures of silver nanoparticles on MOx.

关键词： hetero-nanostructure silver nanoparticles MoO3 TiO2 SiO2 catalyst and sensor

Investigation of C_(60) Single Crystal by X-Ray Methods

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Chinese Physics Letters 1995年第4期12卷 217-220页

作者： li chaorong MAI Zhenhong WANG Gang WANG Yutian WU Lansheng CUI Shufan XIE Sishen JIANG Jianhua Institute of Physics Academia SinicaBeijing 100080 Institute of Semiconductors Academia SinicaBeijing 100083 Beijing Synchrotron Radiation Laboratory P.O.Box 918Beijing 100039

C_(60) single crystals grown by a single-temperature-gradient technique were characterized by synchrotron radiation white beam x-ray topography and x-ray double crystal diffraction with Cu K_(α1) radiation on conventional x-ray *** results show that the crystal is rather well *** x-ray topographies give an evidence of dendritic growth mechanism of C_(60) single crystal,and x-ray double crystal diffraction rocking curve shows that there are mosaic structural defects in the sample.A phase transition at 249±1.5K from a simple cubic to a face centered cubic structure is confirmed by in situ observation of synchrotron radiation white beam x-ray topography with the temperature varing from 230 to 295K.

关键词： cubic topography crystal

南岭国家级自然保护区地上粗木质残体质量估算模型构建

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林业与环境科学 2024年第4期40卷 64-69页

作者：段懿芳李超荣李兆佳林芳林玉华曾滢静李广玮李华盛广东南岭国家级自然保护区管理局广东韶关512727 中国林业科学研究院热带林业研究所广东广州510520 南岭北江源森林生态系统国家定位观测研究站广东广州510520 广东省乳阳林场(广东南岭国家森林公园管理处) 广东韶关512727 广东省天井山林场(广东天井山国家森林公园管理处) 广东韶关512726

为了更好地支撑广东南岭国家级自然保护区以及附近森林生态系统碳储量和碳汇估算,研究采用广东南岭国家级自然保护区海拔400~1800 m之间阔叶林和针阔混交林中采集的300个粗木质残体(Coarse wood debris,CWD)样品,以分解等级和体积参数... 详细信息

为了更好地支撑广东南岭国家级自然保护区以及附近森林生态系统碳储量和碳汇估算,研究采用广东南岭国家级自然保护区海拔400~1800 m之间阔叶林和针阔混交林中采集的300个粗木质残体(Coarse wood debris,CWD)样品,以分解等级和体积参数为自变量构建CWD质量估算模型。CWD样品平均直径3.332~5.919 cm,平均长度1.55~2.80 m,平均密度0.150~0.224 g·cm^(-3)。尽管直径、长度和密度在个体和样地之间的差异较大,但总体上不随海拔和森林类型而变化,代表性较好。CWD分解等级对样品特征有显著影响,样品密度随分解等级增加而下降。建立的模型拟合度高,分解等级和体积参数均能有效解释CWD质量变化。

关键词：粗木质残体质量估算亚热带常绿阔叶林

Bimolecular reduction of carbon dioxide: double synthons for alkynes trifunctionalization

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Science China Chemistry 2024年第3期67卷 841-847页

作者： Wenfang Xiong Xiaobin Tan Hongjian liu Baiyao Zhu Jinwu Zhao Jianxiao li chaorong Qi Huanfeng Jiang School of Pharmacy Guangdong Medical UniversityDongguan 523808China Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China

Carbon dioxide reduction, as a sustainable and versatile strategy for the access of chemical fuels, has attracted increasing attention and enormous efforts have been devoted to it in recent years. However, employing carbon dioxide as double synthons via bimolecular reduction remains challenging. Here, by leveraging the bimolecular reduction of carbon dioxide to carbonyl and methyl respectively, we describe a Pd-catalyzed trifunctionalization of alkynes with aryl iodide for the first time and showcase its advantages on the formation of various β-diketones and their application in the constructing of heterocyclic compounds with important biological activity, including pyrimidine, oxazole, pyrazole.

关键词： carbon dioxide bimolecular reduction trifunctionalization double synthons

STUDY OF THE QUAliTY OF GaAs THIN FILM ON Si SUBSTRATE BY X-RAY DIFFRACTION METHOD

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Chinese Physics Letters 1990年第7期7卷 308-311页

作者： li chaorong MAZhenhong CUI Shufan ZHOU Junming Wang Yutian Institute of Physics Academia SinicaBeijing 100080 Institute of Semiconductor Academia SinicaBeijing 100080

Different diffraction lattice planes were used to investigate the quality profiles of molecular beam epitaxy epi-layer GaAs films on Si substrate by X-ray double crystal diffraction *** the X-ray incident angle increasing,the full width of half maximum(FWHM)also increases,that is,the quality getting worse in deeper *** a clear figure of the degree of perfectness along the depth can be *** sample with strain surerlattice buffer layer has better quality than that without,especially in the surface lamella.

关键词： lattice layer RATE

DISCOVERY OF VERTEBRATE FOSSILS AND PALEOliTHIC ARTIFACTS IN DANJIANG SUBMERGING AREA AND ITS IMPliCATIONS

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古脊椎动物学报(中英文） 1996年第3期 233-234页

作者： Huang Xueshi Zheng Shaohua li chaorong Zhang Zhaoqun Guo Jianwei liu liping(Institute of Verterate Paleontology and Paleoanthropology , Chinese Academy of Sciences Beijing 100044)

In the area to be flooded in the second engineering stage for the Danjiang reservoir, we discovered 16 vertebrate fossil localities and 52 Paleolithic sites in 1994, and collected 603 artifacts and many fossils.

关键词： Danjiang submerging area vertebrate fossils Paleolithic artifacts