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Towards prediction of ordered phases in rechargeable battery chemistry via group–subgroup transformation

npj Computational Materials 2021年第1期7卷 1680-1690页

作者： Yunbing Ran Zheyi Zou Bo liu Da Wang Bowei pu Penghui Mi Wei shi Yajie li Bing He Ziheng Lu Xia Lu Baihai li Siqi shi School of Materials Science and Engineering Shanghai UniversityShanghai 200444China School of Materials Science and Engineering Xiangtan UniversityXiangtanHunan 411105China College of Mathematics and Physics Jinggangshan UniversityJi’anJiangxi 343009China School of Computer Engineering and Science Shanghai UniversityShanghai 200444China Department of Materials Science&Metallurgy University of CambridgeCambridge CB30FSUK School of Materials Sun Yat-sen UniversityGuangzhou Higher Education Mega CenterGuangzhou 510006China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054China Materials Genome Institute Shanghai UniversityShanghai 200444China

The electrochemical thermodynamic and kinetic characteristics of rechargeable batteries are critically influenced by the ordering of mobile ions in electrodes or solid ***,because of the experimental difficulty of capturing the lighter migration ion coupled with the theoretical limitation of searching for ordered phases in a constrained cell,predicting stable ordered phases involving cell transformations or at extremely dilute concentrations remains ***,a group-subgroup transformation method based on lattice transformation and Wyckoff-position splitting is employed to predict the ordered ground *** reproduce the previously reported li_(0.75)CoO_(2),li_(0.8333)CoO_(2),and li_(0.8571)CoO_(2)phases and report a new li_(0.875)CoO_(2)ground *** the advantage of Wyckoff-position splitting in reducing the number of configurations,we identify the stablest li_(0.0625)C_(6) dilute phase in li-ion intercalated *** also resolve the li/La/vacancy ordering in li_(3x)La_(2/3−x)TiO_(3)(0li-ion diffusion *** findings provide important insight towards understanding the rechargeable battery chemistry.

关键词： transformation ordered battery

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Effect of the amount of trapped particulate matter on diesel particulate filter regeneration performance using nonthermal plasma assisted by exhaust waste heat

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Plasma Science and Technology 2020年第1期22卷 87-95页

作者： Yunxi shi Yixi CAI Xiaohua li Xiaoyu pu Nan ZHAO Weikai WANG School of Automotive and Traffic Engineering Jiangsu UniversityZhenjiang 212013People's Republic of China

An experimental system of diesel particulate filter(DPF)regeneration using non-thermal plasma(NTP)technology assisted by exhaust waste heat was conducted and regeneration experiments of DPFs with different amounts of trapped particulate matter(PM)were *** concentrations of the PM decomposition products(CO,)and the internal temperature of the DPF were monitored to determine the performance of DPF regeneration and thermal safety of the NTP *** results showed that the concentrations of CO and CO2and the mass of P.V1 decomposition increased with the increase in the amount of captured PM,whereas the concentration of the NTP active substance(O,)escaping from the DPF decreased under the same working conditions of the NTP injection system.A higher amount of captured PM promoted the oxidative decomposition reaction between NTP and PM and improved the utilization rate of the NTP active *** peak temperature at the same measuring point inside the DPF generally increased and the phases of the peak temperature were delayed as the amount of captured PM *** temperature peaks and temperature gradients during the DPF regeneration process were far lower than llie failure limit value,which indicates that NTP regeneration technology has good thermal durability and increases the service life of the DPF.

关键词： diesel diesel particulate filter regeneration particulate matter non-thermal plasma

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Genetic Variation in Resistance to Valsa canker is Related to Arbutin and Gallic Acid Content in Pyrus bretschneideri

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Horticultural Plant Journal 2018年第6期4卷 233-238页

作者： liU pu shi Yuanyuan ZHU liwu Key Laboratory of Pomology School of Horticulture Anhui Agricultural University

Pear Valsa canker is a fungal trunk disease caused by Valsa pyri. Phenolic compounds are ubiquitous in plants and usually contribute to plant resistance against biotic stress. To investigate the association between phenolic compounds and level of resistance to V. pyri, we quantified the contents of individual phenolic compounds in the cortex and phloem of stems from 8 cultivars of Pyrus bretschneideri. Significant variation in the levels of all compounds was found among the cultivars. Correlation analysis revealed an inverse correlation between levels of arbutin and gallic acid with the degree of canker resistance. This suggested that these phenolic compounds are beneficial to V. pyri infection. These data could be valuable for breeding cultivars of P. bretschneideri with greater resistance to V. pyri.

关键词： Pyrus bretschneideri phenolic compound resistance Valsa canker LC–MS

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Surface activation of colloidal indium phosphide nanocrystals

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Nano Research 2017年第3期10卷 941-958页

作者： Yang li Chaodan pu Xiaogang Peng Center for Chemistry of Novel & High-Performance Materials Department of Chemistry Zhejiang University Hangzhou 310027 China

Against general wisdom in crystallization, the nucleation of InP and III-V quantum dots （QDs） often dominates their growth. Systematic studies on InP QDs identified the key reason for this： the dense and tight alkanoate-ligand shell around each nanocrystal. Different strategies were explored to enable necessary ligand dynamics--i.e., ligands rapidly switching between being bonded to and detached from a nanocrystal upon thermal agitation--on nanocrystals to simultaneously retain colloidal stability and allow appreciable growth. Among all the surface-activation reagents tested, 2,4-diketones （such as acetylacetone） allowed the full growth of InP QDs with indium alkanoates and trimethylsilylphosphine as precursors. While small fatty acids （such as acetic acid） were partially active, common neutral ligands （such as fatty amines, organophosphines, and phosphine oxides） showed limited activation effects. The existing amine-based synthesis of InP QDs was activated by acetic acid formed in situ. Surface activation with common precursors enabled the growth of InP QDs with a distinguishable absorption peak between ~450 and 650 nm at mild temperatures （140-180 ~C）. Furthermore, surface activation was generally applicable for InAs and III-V based core/shell QDs.

关键词： quantum dots nanocrystals indium phosphide surface

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Mannose-binding lectin 2 rs11003123 polymorphism is associated with the development of hepatocellular carcinoma in patients with hepatitis B-related cirrhosis in the Chinese population

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Hepatobiliary & Pancreatic Diseases International 2016年第3期15卷 282-288页

作者： pu-Sen Wang Jing Kuai Hao li Chun-Guang Wang Bao-Jie shi lin Zhong Department of General Surgery Shanghai General HospitalShanghai Jiaotong University School of Medicine Department of Hepatobiliary Surgery Weifang People’s Hospital

BACKGROUND： Mannose-binding lectin 2 （MBL2） plays a key role in the host immune response, but whether it is associ- ated with hepatocellular carcinoma （HCC） is not dear. The present study aimed to identify the association between MBL2 gene polymorphisms and HCC in patients with hepatitis B virus （I-IBV）-related cirrhosis in the Chinese population.

关键词： mannose-binding lectin 2 polymorphism hepatitis B cirrhosis hepatocellular carcinoma

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Preparation of fine copper powders and their application in BME-MLCC

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Journal of University of Science and Technology Beijing 2006年第3期13卷 250-255页

作者： Songping Wu Haoli Qin pu li College of Chemistry South China University of Technology Guangzhou 510641 China

The preparation of fine copper powders by chemical reduction method was investigated. The reaction of [Cu（NH3）4]2^＋ complex with hydrazine hydrate gives spherical monodispersed fine copper powders. The spherical copper powder with a uniform size of 3.5 ± 0.5 μtm was processed to obtain flake copper powder having a uniform size of 8-10 μm, excellent dispersibility and uniform shape. The spherical copper powder of 2.5 ±0.3 μm in size, flake copper, glass frit and vehicle were mixed to prepare copper paste, which was fired in 910-920℃ to obtain BME-MLCC （base metal multilayer ceramic capacitor） with a dense surface of end termination, high adhesion and qualified electrical behavior. Polarized light photo and SEM were employed to observe the copper end termination of BME-MLCC. The rough interface from the interracial reaction between glass and chip gives high adhesion.

关键词： spherical copper powder flake copper powder chemical reduction BME-MLCC

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Knowledge-oriented modeling for influencing factors of battle damage in military industrial logistics:An integrated method

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Defence Technology（防务技术） 2020年第3期16卷 571-587页

作者： Xiong li Xiao-dong Zhao Wei pu Military Exercise and Training Center Army Academy of Armored ForcesBeijing 100072China

Modeling influencing factors of battle damage is one of essential works in implementing military industrial logistics simulation to explore battle damage laws ***,one of key challenges in designing the simulation system could be how to reasonably determine simulation model input and build a bridge to link battle damage model and battle damage laws *** this paper,we propose a novel knowledge-oriented modeling method for influencing factors of battle damage in military industrial logistics,integrating conceptual analysis,conceptual modeling,quantitative modeling and simulation *** conceptualize influencing factors of battle damage by using the principle of hierarchical decomposition,thus classifying the related battle damage knowledge ***,we construct the conceptual model of influencing factors of battle damage by using Entity-Relations hip approach,thus describing their interactions ***,we extract the important influencing factors by using social network analysis,thus evaluating their importance quantitatively and further clarifying the elements of ***,we develop an agent-based military industry logistics simulation system by taking the modeling results on influencing factors of battle damage as simulation model input,and obtain simulation model output,i.e.,new battle damage laws knowledge,thus verifying feasibility and effectiveness of the proposed *** results show that this method can be used to support human decision-making and action.

关键词： Battle damage Industrial logistics Entity-relationship approach Social network analysis Agent-based simulation

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Ethnic Differences in Preterm Birth Risks for Pregnant Women with Thyroid Dysfunction or Autoimmunity:A Meta-analysis

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Biomedical and Environmental Sciences 2016年第10期29卷 724-733页

作者： li Min WANG Shao Wei WU Feng li shi Jin YU pu lin PENG Xiu ling SUN liang Department of Gynecology and Obstetrics Beijing HospitalNational Center of Gerontology Institute of Geriatrics Beijing HospitalNational Center of Gerontology Department of Gynecology and Obstetrics Morin Dawa Daur Autonomous Banner Hospital

Objective Abnormal maternal thyroid function is associated with preterm ***,this association stays dubious in relevant individual studies for ethnic difference reasons and lack of direct supporting *** study aimed to evaluate the relationship between preterm birth and thyroid dysfunction or autoimmunity based on ethnic *** Relevant studies were identified through searches of MEDliNE,Excerpta Medica,Wan Fang,China Biological Medicine disc,and China National Knowledge Infrastructure from inception to June 15,*** articles in which an incidence or prevalence of thyroid dysfunction or autoimmunity before second trimester of pregnancy could be extracted were *** Thirty-two unique studies were included for the final *** involved were divided into two groups：Group 1（G1） and Group 2（G2） comprising of Asian and Caucasian populations,*** thyroid antibodies were associated with the occurrence of preterm birth in both G1 [odds ratio（OR）：3.62,95% confidence interval（CI）：2.83-4.65] and G2（OR：1.35,95% CI：1.17-1.56）;hypothyroidism,only in G2（OR：1.20,CI：1.09-1.33）;and subclinical hypothyroidism or hypothyroxinemia,in neither *** Thyroid autoimmunity may be a more favorable factor leading to preterm birth among pregnant women of different ethnicities,compared with thyroid dysfunction.

关键词： Thyroid Hypothyroidism Autoimmunity Preterm birth Ethnicity

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Microstructures and erosion-corrosion behavior of Fe-B alloy containing chromium and nickel

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China Foundry 2019年第5期16卷 307-312页

作者： Da-wei Yi Yu-pu shi Han-guang Fu Jin Chen Chong li College of Materials Science and Engineering Xi'an University of Science and Technology Xi’an 710054 China College of Materials Science and Engineering Beijing University of Technology Beijing 100124 China

The Fe-B alloy containing chromium and nickel was prepared, and the microstructure and erosioncorrosion behavior of the alloy were investigated by means of scanning electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction analysis, Leica digital image analysis, a hardness tester and an erosioncorrosion tester. Cr28 white cast iron was used for comparison. Results show that the microstructures of both as-cast and heat-treated Fe-B alloys consist of austenite and borocarbide. The nickel and chromium elements are mainly distributed over the matrix and borocarbide, respectively. The hardness of the austenite matrix and the Rockwell hardness of heat-treated Fe-B alloy are higher than those of as-cast Fe-B alloy. In the erosioncorrosion test of the slurry, the erosion-corrosion weight loss of Fe-B alloy is lower than that of Cr28 white cast iron, indicating the Fe-B alloy displays higher erosion-corrosion resistance.

关键词： microstructure borocarbide chromium nickel erosion-corrosion

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Recommendations on legislative and regulatory framework and regulatory body of nuclear security in China

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Nuclear Science and Techniques 2007年第5期18卷 307-310页

作者： pu Jilong li Xiaoyan China Guangdong Nuclear Power Holding Co. Ltd. Shenzhen 518031 China

This paper describes the definition of nuclear security that has been changing from the cold war age to the post-911 period, and clarifies the close relationship and yet a clear distinction between nuclear security, nuclear safety and nuclear safeguard. Based on analyses of the current state of nuclear security activities in China as well as the requirements and the law infrastructure, a legislative and regulatory framework of nuclear security and the mandate of a regulatory body in China are recommended.

关键词：核安全立法反应堆安全管理

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