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Theoretical insights of the pharmaceutical compound fluoxetine in water:Role in direct photolysis and indirect photolysis by free radicals

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Journal of Environmental Sciences 2024年第8期142卷 269-278页

作者： ying lu Se Wang Yifan Shen School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing University of Information Science and TechnologyNanjing 210044China

The frequent detection of pharmaceutical compounds in the environment has led to a growing awareness,which may pose a major threat to the aquatic *** this study,photodegradation(direct and indirect photolysis)of two different dissociation states of fluoxetine(Flu)was investigated in water,mainly including the determination of photolytic transition states and products,and the mechanisms of indirect photodegradation with·OH,CO_(3)^(*-)and NO_(3)^(*).The main direct photolysis pathways are defluorination and C–C bond *** addition,the indirect photodegradation of Flu in water is mainly through the reactions with·OH and NO_(3)^(*),and the photodegradation reaction with CO_(3)^(*-)is relatively difficult to occur in the water *** results provide a theoretical basis for understanding the phototransformation process of Flu in the water environment and assessing its potential risk.

关键词： Fluoxetine Photochemical mechanism Direct photolysis Free radical reaction DFT

Initiation, Development and Stabilization of Cavities during Tensile Deformation of Semicrystalline Polymers

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Chinese Journal of Polymer Science 2018年第10期36卷 1195-1199页

作者： ying lu Yong-Feng Men State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China University of Science and Technology of China Hefei 230026 China

By using polybutene-1 as a typical example, we illustrate the initiation, development and stabilization of cavities in the sample during tensile deformation. Samples with the same crystallinity, long spacing and crystalline lamellar thickness but very different sizes of spherulites were prepared via changing the melt history. Dimension of cavities during stretching the samples was determined by in situ ultra small angle X-ray scattering techniques. It turned out that the size of the cavities was bigger in the sample with larger spherulites than the one with smaller spherulites. The results show clear evidence of initiating cavities within crystalline phase at the grain-boundary of crystalline blocks, growing of cavities passing through parallel stacked lamellar crystals and amorphous layers and finally stablized by tilted lamellae at both ends of the plate-like cavities within the spherulites.

关键词： Cavitation Deformation Polymer Polubutene-1 Spherulite

Deformation Temperature and Lamellar Thickness Dependency of FormⅠto Form Ⅲ Phase Transition in Syndiotactic Polypropylene during Tensile Stretching

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Chinese Journal of Polymer Science 2014年第9期32卷 1210-1217页

作者： ying lu ying-ying Sun Ran Chen Xiu-hong Li 门永锋 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences SSRF Shanghai Institute of Applied Physics Chinese Academy of Sciences

Phase transition from form Ⅰ to form Ⅲ in syndiotactic polypropylene crystallized at different conditions during tensile deformation at different temperatures was investigated by using in situ synchrotron wide angle X-ray diffraction technique. In all cases, the occurrence of this phase transition was observed. The onset strain of this transition was found to be crystalline thickness decided by crystallization temperature and drawing temperature dependent. The effect of drawing temperature on this phase transition is understood by the changes in mechanical properties with temperature. Moreover, crystalline thickness dependency of the phase transition reveals that this form Ⅰ to from Ⅲ phase transition occurs first in those lamellae with their normal along the stretching direction which have not experienced stress induced melting and recrystallization.

关键词： Tensile deformation Phase transition Syndiotactic polypropylene WAXD.

The Cognitive Study of Courtroom Examination

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学术界 2015年第2期 281-286页

作者： lu ying School of Foreign Studies Anhui University Hefei Anhui 230601

Previous studies from rhetorical,sociolinguistic,conversation analysis and pragmatic perspectives, fail to delve into the mental operation of the courtroom proceedings. To make clear the cognitive mechanism hidden in the strategies adopted by lawyers in courtroom examination, the present study proposes a cognitive approach by bringing Conceptual Integration Theory into the analysis. In this way, the combination of conceptual integration theory with courtroom examination will create a new perspective for the research of both cognitive and forensic linguistics.

关键词：认知研究考试认知方法语言学法庭审查整合

Dempster-Shafer Evidence Theory and Study of Some Key Problems

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Journal of Electronic Science and Technology 2017年第1期15卷 106-112页

作者： ying-Jin lu Jun He School of Management and Economics University of Electronic Science and Technology of ChinaChengdu 610054China

As one of the most important mathematical methods, the Dempster-Shafer（D-S）evidence theory has been widely used in date fusion, risk assessment, target identification, knowledge reasoning,and other fields. This paper summarized the development and recent studies of the explanations of D-S model, evidence combination algorithms, and the improvement of the conflict during evidence combination, and also compared all explanation models,algorithms, improvements, and their applicable conditions. We are trying to provide a reference for future research and applications through this summarization.

关键词： Bayesian reasoning belief uncertainty intuitive summarized explanation decoder applicable likelihood

A HOMOGENOUS-EQUILIBRIUM-MODEL BASED NUMERICAL CODE FOR CAVITATION FLOWS AND EVAluATION BY COMPUTATION CASES

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Journal of Hydrodynamics 2008年第2期20卷 186-194页

作者： CHEN ying lu Chuan-jing Department of Engineering Mechanics Shanghai Jiaotong University Shanghai 200240 China

A computer code, ELANEX, including several Homogenous-Equilibrium-Model （HEM） type cavitation models, were developed, to numerically simulate natural cavitation phenomena. The effectiveness of the code was checked by cavitation flows around the disk and cylinder body for a wide range of different cavitation numbers. Cavity profiles were compared with the analytic solution of disk and empirical formulae fitted from the experiment data, and contrast between different cavitation models were fulfilled as well. The cavity length and maximal cavity diameter were found to agree well with the analytic solutions, and detailed cavity profiles were in accordance with the experimental formula. Comparison with the hemisphere headed cylinder body presented a good agreement of the pressure coefficient with the experiment data. Reasonable drag-force coefficient variation and drag-force reduction effect were obtained.

关键词： cavitation numerical code disk hemisphere cavity profile pressure coefficient

Design and implementation of high-speed real-time data acquisition system based on FPGA

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The Journal of China Universities of Posts and Telecommunications 2006年第4期13卷 61-66页

作者： WANG Xu-ying lu ying-hua ZHANG Li-kun Office of Academic Committee Beijing University of Posts and Telecommunications Beijing 100876 China School of Telecommunication and Network Technology Beijing University of Posts and Telecommunications Beijing 100876 China The Translation Department of the Second Artillery Troops of PLA Beijing 100820 China

The electromagnetic radiation will result in informa- tion leakage being recovered when computers work. This article presents a high-speed real-time data acquisition system based on peripheral component interconnect （PCI） bus and field programmable gate array （FPGA） for sampling electromagnetic radiation caused by video signal. The hardware design and controlling flow of each module are introduced in detail. The sampling rate can reach 64 Msps and system transfers speed can be up to 128 Mb/s by using time interleaving, which increases the overall sampling speed of a system by operating two data converters in parallel.

关键词： high-speed data acquisition FPGA PCI bus very-high-speed integrated circuit Hardware description language (VHDL) analog-to-digital converter (ADC)

Evolutionary programming CLEAN algorithm for UWB localization images of contiguous targets

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The Journal of China Universities of Posts and Telecommunications 2007年第2期14卷 79-83页

作者： XU Yong lu ying-hua School of Telecommunication and Network Technology Beijing University of Posts and Telecommunications Beijing 100876 China

In this article, a novel scattering center extraction method using genetic algorithm is proposed to deal with the ultra-wideband （UWB） localization image, which is called evolutionary programming （EP） CLEAN algorithm. Because of the UWB characters, the ideal point scattering model and EP method are used in the algorithm for optimizing the UWB localization images. After introducing the algorithm detail, the actual model is used to realize the EP CLEAN algorithm. Compared with the conventional localization imaging algorithm, this algorithm has advantages fitting the UWB characters such as accuracy, robustness, and better resolution, which are verified by the numerical simulations. Therefore the EP CLEAN algorithm could improve localization image performance to expand the UWB technique application.

关键词： UWB localization evolutionary programming CLEAN algorithm

Theoretical Studies on N_2H+O Reaction

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Chemical Research in Chinese Universities 2008年第3期24卷 371-377页

作者： lu ying-wen lu Wen-cai SU Zhong-min Jinan Vocational College Jinan 250100 P. R. China State Key Laboratory of Theoretical and Computational Chemistry Jilin University Changchun 130023 P. R. China Institute of Functional Material Chemistry Northeast Normal University Changchun 130024 P. R. China

The N2H＋O potential energy profile was studied at the CCSD（T）/6-311G＋＋（df,p）//MP2/6-311G（d,p） level. Reactions associated with four intermediates（cis-HNNO, trans-HNNO, NNHO, and NNOH） were investigated. The results indicate that N2H＋O reaction toward H＋N2O is more favored than that toward N2＋OH, consistent with previous experimental studies. The pathways for the two reactions are found to go through cis-HNNO, transition state, and finally to the products. The N2H＋O→NH＋NO reaction was studied in detail. Product NO in such a reaction is likely to occur via cis-HNNO, followed by trans-HNNO, and finally dissociates into NH＋NO. These results suggest that N2H＋O→NH＋NO is an important channel in NO production.

关键词： N2H+O NH+NO Potential energy profile