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Chemical modification and the photoluminescence stabilization of titanic acid nanotubes

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Science China Chemistry 2006年第2期49卷 155-161页

作者： ZHANG Xingtang WANG Yumei ZHANG Chunmei JIANG Xiaohong TIAN baoli LI Yuncai HUANG Yabin DU Zuliang Key Laboratory for Special Functional Materials Henan UniversityKaifeng 457001China

Titanic acid nanotubes(H_(2)Ti_(2)O_(4)(OH)_(2))were surface-modified with cetyl alcohol through dehydration reaction because of existence of Ti–*** modified nanotubes were characterized by transmission electron microscopy(TEM),Fourier Transform Infrared(FT-IR)spectrometry and pho-toluminescence(PL)*** results indicate that the modified nanotubes can be easily dis-persed into organic solvent such as chloroform and toluene in contrast with the unmodified nanotubes,which makes it easier to be assembled by LB ***,the Ti-O-CH_(2)(CH_(2))_(14)CH_(3) on the surface of the nanotubes can hinder the adsorption of water and consequently the photoluminescence property of the nanotubes can be *** though kept in humid condition or in air for a long time,the modified nanotubes also maintain the special photoluminescence property in the visible region.

关键词： titanic acid nanotubes surface-modification photoluminescence

Experimental demonstration of the three-phase-shifted DFB semiconductor laser with buried heterostructure using common holographic exposure

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Science China(Technological Sciences) 2014年第11期57卷 2231-2235页

作者： LU LinLin CAO baoli ZHANG LiBo TANG Song LI LianYan LI SiMin SHI YueChun CHEN XiangFei National Laboratory of Microstructures & School of Engineering and Applied Sciences Nanjing University

In this article, we report the first experimental demonstration of the three-phase-shifted （3PS） DFB semiconductor laser with buried heterostructure based on the Reconstruction-Equivalent-Chirp （REC） technique. The simulation results show that the performances of the equivalent 3PS DFB semiconductor laser are nearly the same as those of the true 3PS laser. Compared with the quarter-wave-phase shift （QWS） DFB semiconductor laser, the 3PS DFB semiconductor laser shows better single-longitude-mode （SLM） property even at high injection current with high temperature. However, it only changes the ~un-level sampling structures but the seed grating is uniform using the REC tech- nique. Therefore, its fabrication cost is low.

关键词： three-phase-shifted structure DFB semiconductor laser Reconstruction-Equivalent-Chirp (REC) technique

Effects of ionic impurities on crystallization of cobalamin

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Frontiers of Chemical Science and Engineering 2010年第1期4卷 70-74页

作者： baoli SHAO Hui CHEN Shuang WANG Haijun WANG Shenmin XU School of Chemistry and Chemical Engineering Tianjin University of TechnologyTianjin 300384China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

In this paper,the influence of two typical ionic impurities(Na_(+)and Mg_(2+))is investigated with the focused beam reflectance measurement(FBRM)*** this system,the on-line FBRM is used as a tool for monitoring the crystallization process of cobalamin by measuring the chord length distribution of particles and the particle *** is noted that impurity Mg_(2+)has a more significant effect than Na_(2+)in crystal growth of the whole crystallization *** the microscopic observation of crystals,Mg_(2+)has an obvious effect on the crystal habit,while Na_(2+)has little *** addition,the crystal habit changes can be monitored by particle vision measurement(PVM).Understanding these effects is helpful to aid optimization and improve process control.

关键词： ionic impurities crystallization cobalamin FBRM PVM

Identification of antibiotic resistance genes and associated mobile genetic elements in permafrost

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Science China(Life Sciences) 2021年第12期64卷 2210-2213页

作者： Jian Cao Fei Liu Shuli Liu Jun Wang baoli Zhu Yi Shi George Fu Gao CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China College of Life Sciences Jiangxi Normal UniversityNanchang 330022China

Dear Editor,Pathogenic microorganisms carrying antibiotic resistance genes(ARGs)pose serious challenge to human health *** major reservoir of ARGs is believed to be the environment(Cao et al.,2020).Some ARGs can be tr... 详细信息

关键词： reservoir resistance elements

Molecular Dynamics Simulation of Hydrate Decomposition Under Action of Alcohol Inhibitors

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Journal of Harbin Institute of Technology(New Series) 2023年第6期30卷 12-28页

作者： Shuyan Wang Xuqing Zha baoli Shao Jing Wang Xi Chen Jiawei Fan School of Petroleum Engineering Northeast Petroleum UniversityDaqing 163318HeilongjiangChina

The molecular dynamics method is used to investigate decomposition of methane hydrate at different temperatures,pressures and concentrations of *** analyzing the parameters of system conformation,mean square displacement and radial distribution function,the decomposition of hydrate in the presence of alcohol inhibitors ethylene glycol and glycerol is *** results show that the hydroxyl groups in alcohol molecules can destroy the cage structure of hydrate,and form hydrogen bonds with nearby water molecules to effectively prevent the reformation of ***,ethylene glycol and glycerol serve as inhibitors of methane hydrate,furthermore,in terms of inhibition effect,glycerol is better than ethylene glycol by comparing rate of hydrate decomposition.

关键词： methane hydrate alcohol inhibitors molecular dynamics simulation decompose

Semi-Supervised Noisy Label Learning for Chinese Clinical Named Entity Recognition

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Data Intelligence 2021年第3期3卷 389-401页

作者： Zhucong Li Zhen Gan baoli Zhang Yubo Chen Jing Wan Kang Liu Jun Zhao Shengping Liu National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Beijing University of Chemical Technology Beijing 100029China UNISOUND AI Technology Co. Ltd.Beijing 100096China

This paper describes our approach for the Chinese clinical named entity recognition(CNER) task organized by the 2020 China Conference on Knowledge Graph and Semantic Computing(CCKS) competition. In this task, we need to identify the entity boundary and category labels of six entities from Chinese electronic medical record(EMR). We constructed a hybrid system composed of a semi-supervised noisy label learning model based on adversarial training and a rule post-processing module. The core idea of the hybrid system is to reduce the impact of data noise by optimizing the model results. Besides, we used post-processing rules to correct three cases of redundant labeling, missing labeling, and wrong labeling in the model prediction results. Our method proposed in this paper achieved strict criteria of 0.9156 and relax criteria of 0.9660 on the final test set, ranking first.

关键词： Named entity recognition Electronic medical record Noisy label learning Semi-supervised Adversarial training

Direct bandgap engineering with local biaxial strain in few-layer MoS2 bubbles

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Nano Research 2020年第8期13卷 2072-2078页

作者： Yang Guo Bin Li Yuan Huang Shuo Du Chi Sun Hailan Luo baoli Liu Xingjiang Zhou Jinlong Yang Junjie Li Changzhi Gu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing100190China School of Physical Sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing100190China Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information&Quantum Physics(CAS) University of Science and Technology of ChinaHefei230026China Songshan Lake Materials Laboratory Dongguan523808China

Nano Research volume 13,pages2072–2078(2020)Cite this article 211 Accesses Metrics details Abstract Strain engineering provides an important strategy to modulate the optical and electrical properties of semiconductors for improving devices performance with mechanical force or thermal expansion ***,we present the investigation of the local strain distribution over few-layer MoS2 bubbles,by using scanning photoluminescence and Raman *** observe the obvious direct bandgap emissions with strain in the few-layer MoS2 bubble and the strain-induced continuous energy shifts of both resonant excitons and vibrational modes from the edge of the MoS2 bubble to the center(10μm scale),associated with the oscillations resulted from the optical interference-induced temperature *** understand these results,we perform ab initio simulations to calculate the electronic and vibrational properties of few-layer MoS2 with biaxial tensile strain,based on density functional theory,finding good agreement with the experimental *** study suggests that local strain offers a convenient way to continuously tune the physical properties of a few-layer transition metal dichalcogenides(TMDs)semiconductor,and opens up new possibilities for band engineering within the 2D plane.

关键词： two-dimensional(2D)layered materials transition metal dichalcogenides band engineering local strain

Syntheses and lyotropic liquid crystal properties of a series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30

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Chinese Science Bulletin 1999年第21期44卷 1964-1967页

作者： Rudan Huang Lihua Bi Enbo Wang baoli Fei Lin Xu Changwen Hu NE Normal Univ Dept Chem Changchun 130024 Peoples R China

A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally characterized by elemental analysis, IR and 183W NMR spectra. The crystal structure of Na16[As4W30Cu4(H2O)2O112]·63H2O was determined to be a triclinic system, of P1 symmetry, a = 1.2721(3) nm, b = 2.451 6(5) nm, c = 2.6450(5) nm,

关键词： tungstoarsenate heteropoly compounds synthesis lyotropic liquid crystal.

Insulin peptides and their receptors regulate ovarian development and oviposition behavior in Diaphorina citri

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Insect Science 2023年第1期30卷 95-108页

作者： Ziye Wang Delong Tan Feifeng Wana Shuhao Guo Jinhua Liu Andrew G.S.Cuthbertson baoli Qiu Wen Sang Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province South China Agricultural UniversityGuangzhouChina Guangdong Laboratory for Lingnan Modern Agriculture GuangzhouChina Institute of Facility Agriculture Guangdong Academy of Agricultural SciencesGuangzhouChina Natural Medicine Institute of Zhejiang YangShengTang Co.LTD HangzhouChina Independent Science Advisor YorkUK

Diaphorina citri is an important vector of Citrus Huanglongbing(HLB)*** feeding on young host plant shoots,the population of *** can increase *** also only lay eggs on young ***,there are few studies on the mechanism of this *** nutrient signals can affect the insulin signaling system of *** after feeding on young *** this study,the expression of upstreamfactors DclLPl,DclLP2,and DclR in the insulin signaling system of *** was upregulated after feeding on young *** being silenced by RNA interference technology,the results showed that the number of oviposited eggs of *** was significantly decreased and the ovarian development was inhibited with severe *** addition,detection using quantitative reverse transcription-polymerase chain reaction showed that the upstream regulatory gene DcRheb of the target of rapamycin(TOR)pathway and the downstream reproduction-related DcVg gene were also significantly *** results suggest that feeding upon young shoots may upregulate the expression levels of upstream factors DclLPl,DclLP2,and DclR in the insulin signaling *** signal will be through upregulating the expression of DcRheb,an upstream gene of the TOR signaling *** in turn influences yolk metabolism,which eventually causes the ovaries of female *** to mature and therefore initiate oviposition behavior.

关键词： Diaphorina citri insulin-like peptide insulin receptor insulin signaling reproduction target of rapamycin