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Hydrothermal synthesis of xonotlite from carbide slag

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Progress in Natural Science:Materials International 2008年第9期18卷 1147-1153页

作者： Jianxin Cao , Fei Liu, qian lin, yu Zhang Department of Chemical Engineering, Guizhou University, Guiyang 550003, China Department of Chemical Engineering Guizhou University Guiyang 550003 China

Carbide slag was used as the calcareous materials for the first time to prepare xonotlite via dynamic hydrothermal *** efiects of infiuential factors including difierent calcination temperatures, pretreatment methods of the carbide slag and process param-eters of hydrothermal synthesis on the microstructure and morphology of xonotlite were explored using XRD and SEM *** results indicate that the carbide slag after proper calcination could be used to prepare pure xonotlite;and difierent calcination tem-peratures have little efiect on the crystallinity of synthesized xonotlite, but have great impact on the morphology of secondary *** difierent pretreatment methods of the carbide slag pose great impact on the crystallinity and morphology of secondary particles of *** was also synthesized from pure CaO under the same experimental conditions as that prepared from calcined carbide slag for *** amount of impurities in carbide slag has no efiect on the mechanism of hydrothermal synthesizing xonotlite from carbide slag.

关键词： Hydrothermal synthesis Carbide slag Xonotlite Calcination temperature

Biochar with self-doped N to activate peroxymonosulfate for bisphenol-A degradation via electron transfer mechanism:The active edge graphitic N site

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Chinese Chemical Letters 2024年第9期35卷 351-355页

作者： yun-Xin Huang lin-qian yu Ke-yu Chen Hao Wang Shou-Yan Zhao Bao-Cheng Huang Ren-Cun Jin School of Engineering Hangzhou Normal UniversityHangzhou 311121China Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change Hangzhou 311121China

Environmental endocrine disruptors,represented by bisphenol A(BPA),have been widely detected in the environment,bringing potential health risks to human ***-containing biocarbon catalyst can activate peroxymonosulfate(PMS)to degrade BPA in water,but its active sites remain ***,in this work,nitrogen-containing biochar,i.e.,C–Nedge,enriched with graphitic-N defects at the edges was prepared by one-pot co-pyrolysis of chitosan and potassium *** results showed that the C–Nedge/PMS system can effectively degrade 98%of BPA(50 mg/L).The electron transfer based non-radical oxidation mechanism was responsible for BPA *** graphitic-N doping endows biochar with strong electron transfer *** catalyst had good recovery and reuse *** catalytic oxidation was also feasible for other refractory pollutants removal and worked well for treating practical *** work may provide valuable information in unraveling the N doping configurationactivity relationship during activating PMS by biochar.

关键词： Peroxymonosulfate Carbon-based catalysts Edge graphitic-N Non-radicals Bisphenol A

Biomass derived Fe-N/C catalyst for efficiently catalyzing oxygen reduction reaction in both alkaline and neutral pH conditions

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Chinese Chemical Letters 2023年第1期34卷 465-468页

作者： lin-qian yu Hao Wang Shu-La Chen Te-Er Wen Bao-Cheng Huang Ren-Cun Jin Laboratory of Water Pollution Remediation School of Life and Environmental SciencesHangzhou Normal UniversityHangzhou 311121China

Fe-N/C is a promising oxygen reduction reaction(ORR)catalyst to substitute the current widely used precious metal ***-effectively fabricating the Fe-N/C material with high catalytic activity and getting in-depth insight into the responsible catalytic site are of great *** this work,we proposed to use biomass,tea leaves waste,as the precursor to prepare ORR *** adding 5%FeCl3(wt%)into tea precursor,the pyrolysis product(i.e.,5%Fe-N/C)exhibited an excellent four-electron ORR activity,whose onset potential was only 10 m V lower than that of commercial Pt/*** limiting current density of 5%Fe-N/C(5.75 m A/cm^(2))was even higher than Pt/C(5.44 m A/cm^(2)).Compared with other biomass or metal organic frameworks derived catalysts,5%Fe-N/C showed similar ORR ***,both the methanol tolerance and material stability performances of as-prepared 5%Fe-N/C catalyst were superior to that of Pt/C.X-ray adsorption fine structure characterization revealed that the FeN4O2might be the possible catalytic *** appropriate amount of iron chloride addition not only facilitated catalytic site formation,but also enhanced material conductivity and reaction *** results of this work may be useful for the Fe based transition metal ORR catalyst design and application.

关键词： Fe-N/C Oxygen reduction reaction Biomass Fe coordination Polyphenol

In vitro Potentiation of Antimalarial Activities by Daphnetin Derivatives Against Plasmodium falciparum

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Biomedical and Environmental Sciences 2006年第5期19卷 367-370页

作者： FANG HUANG lin-HUA TANG lin-qian yu YI-CHANG NI QIN-MEI WANG FA-JUN NAN National Institute of Parasite Diseases Chinese Center for Disease Control and Prevention Shanghai 200025 China Chinese National Center for Drug Screening Shanghai Institute of Materia Medica Shanghai Institute for Biological Sciences Graduate School of the Chinese Academy of Sciences Shanghai 201203 China

Objective To screen the antimalarial compounds of daphnetin derivatives against Plasmodium falciparum in vitro. Method Plasmodium faciparum （FCC1） was cultured in vitro by a modified method of Trager and Jensen. Antimalarial compounds were screened by microscopy-based assay and microfluorimetric method. Results DA79 and DA78 showed potent antimalarial activity against Plasmodiumfalciparum cultured in vitro. Conclusion Though the relationship between the structures of daphnetin derivatives and their antimalarial activities has not been clarified yet, this study may provide a new direction for discovery of more potential antimalarial compounds.

关键词： Daphnetin Antimalarial Drug screening

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云服务环境下的大数据多标签属性分类技术

微电子学与计算机 2019年第2期36卷 101-104页

作者：林倩瑜集美大学诚毅学院福建厦门361021

云服务环境下的大数据具有多标签属性,导致数据访问过程中的分类性不好,为了降低大数据分类的误分率,提出一种基于极限学习机优化神经网络的云服务大数据分类方法。采用高维相空间重构模型对随机采样的云服务大数据先验特征进行信息重排... 详细信息

云服务环境下的大数据具有多标签属性,导致数据访问过程中的分类性不好,为了降低大数据分类的误分率,提出一种基于极限学习机优化神经网络的云服务大数据分类方法。采用高维相空间重构模型对随机采样的云服务大数据先验特征进行信息重排,采用关联规则挖掘方法提取数据的标签属性特征量,采用多维标签属性的主成分分析方法进行大数据的主特征分析,将主特征量输入到神经网络分类器中,结合极限学习机进行神经网络分类的加权控制,提高数据分类的自适应性,实现云服务大数据优化分类。仿真结果表明,采用该算法进行云服务大数据分类的准确性较高,误分率较低,在云组合服务中提高了数据的召回能力.

关键词：云服务环境大数据分类神经网络极限机学习

Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 6-11页

作者： Haoyu Zhou Pang-Chi Hsu lin Chen Yitian qian Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environmental Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjingChina

During the boreal summer,intraseasonal oscillations exhibit significant interannual variations in intensity over two key regions:the central-western equatorial Pacific(5°S-5°N,150°E-150°W)and the subtropical Northwestern Pacific(10°-20°N,130°E-175°W).The former is well-documented and considered to be influenced by the ENSO,while the latter has received comparatively less attention and is likely influenced by the Pacific Meridional Mode(PMM),as suggested by partial correlation analysis *** elucidate the physical processes responsible for the enhanced(weakened)intraseasonal convection over the subtropical northwestern Pacific during warm(cold)PMM years,the authors employed a moisture budget *** findings reveal that during warm PMM years,there is an increase in summer-mean moisture over the subtropical northwestern *** increase interacts with intensified vertical motion perturbations in the region,leading to greater vertical moisture advection in the lower troposphere and consequently resulting in convective *** a process is pivotal in amplifying intraseasonal convection *** observational findings were further verified by model experiments forced by PMM-like sea surface temperature patterns.

关键词： Boreal summer intraseasonal oscillation Interannual variability Pacific Meridional Mode Moisture budget analysis

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng yu Bai Hang Li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

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基于FLTK的流媒体播放器界面设计与实现

重庆工商大学学报（自然科学版） 2014年第3期31卷 68-71页

作者：林倩瑜集美大学诚毅学院福建厦门361021

利用FLTK开发工具包,给出了一种流媒体播放器界面系统的设计思路及其在嵌入式系统下的实现方法;其特点是界面美观、占用资源少、运行效率高;实验证明其设计思路可行,性能优良,为其他嵌入式系统项目的界面设计提供了借鉴。

关键词：流媒体嵌入式GUI FLTK

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Web数据挖掘技术模型分析

吉林工程技术师范学院学报 2014年第2期30卷 91-93页

作者：林倩瑜集美大学诚毅学院福建厦门361021

研究和分析Web数据挖掘技术模型具有重要的作用和意义,本文主要分析Web数据挖掘技术以及该技术模型目前发展所面临的严峻形势,阐述了Web数据挖掘技术基本类型、技术特点以及技术的重要性。针对Web数据挖掘技术在电子商务方面的应用进行... 详细信息

研究和分析Web数据挖掘技术模型具有重要的作用和意义,本文主要分析Web数据挖掘技术以及该技术模型目前发展所面临的严峻形势,阐述了Web数据挖掘技术基本类型、技术特点以及技术的重要性。针对Web数据挖掘技术在电子商务方面的应用进行研究,取得很好地应用效果。XML技术在Web数据挖掘技术模型中的应用,为非技术人员研究工作提供了新的方向和思路。

关键词： Web 数据挖掘技术技术模型应用研究 XML技术