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Seasonal variation and source apportionment of organic and inorganic compounds in PM_(2.5) and PM_(10) particulates in Beijing,China

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Journal of Environmental Sciences 2013年第4期25卷 741-750页

作者： Xingru Li Yuesi wang Xueqing Guo yingfeng wang Department of Chemistry Analytical and Testing CenterCapital Normal University State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of Sciences

The distribution and source of the solvent-extractable organic and inorganic components in PM2.5 （aerodynamics equivalent diameter below 2.5 microns）, and PM10 （aerodynamics equivalent diameter below 10 microns） fractions of airborne particles were studied weekly from September 2006 to August 2007 in Beijing. The extracted organic and inorganic compounds identified in both particle size ranges consisted of n-alkanes, PAHs （polycyclic aromatic hydrocarbons）, fatty acids and water soluble ions. The potential emission sources of these organic compounds were reconciled by combining the values of n-alkane carbon preference index （CPI）, %waxCn, selected diagnostic ratios of PAHs and principal component analysis in both size ranges. The mean cumulative concentrations of n-alkanes reached 1128.65 ng/m3 in Beijing, 74% of which （i.e., 831.7 ng/m3） was in the PM2.5 fraction, PAHs reached 136.45 ng/m3 （113.44 ng/m3 or 83% in PM2.5）, and fatty acids reached 436.99 ng/m3 （324.41 ng/m3 or 74% in PM2.5）, which resulted in overall enrichment in the fine particles. The average concentrations of SO42-, NO3-, and NH4＋ were 21.3 ± 15.2, 6.1 ±1.8, 12.5 ± 6.1 μg/m3 in PM2.5, and 25.8±15.5, 8.9± 2.6, 16.9±9.5 μg/m3 in PM10, respectively. These three secondary ions primarily existed as ammonium sulfate （（NH4）2SO4）, ammonium bisulfate （NH4HSO4） and ammonium nitrate （NH4NO3）. The characteristic ratios of PAHs revealed that the primary sources of PAHs were coal combustion, followed by gasoline combustion. The ratios of stearic/palmitic acid indicated the major contribution of vehicle emissions to fatty acids in airborne particles. The major alkane sources were biogenic sources and fossil fuel combustion. The major sources of PAHs were vehicular emission and coal combustion.

关键词： airborne particles organic compounds size distribution source

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A Novel Structural Measure Separating Non-Coding RNAs from Genomic Backgrounds

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Tsinghua Science and Technology 2015年第5期20卷 474-483页

作者： yingfeng wang Russell L.Malmberg Liming Cai the School of Information Technology Middle Georgia State University Department of Plant Biology and Institute of Bioinformatics University of Georgia Department of Computer Science and Institute of Bioinformatics University of Georgia

RNA secondary structure has become the most exploitable feature for ab initio detection of non-coding RNA（nc RNA） genes from genome sequences. Previous work has used Minimum Free Energy（MFE） based methods developed to identify nc RNAs by measuring sequence fold stability and certainty. However, these methods yielded variable performances across different nc RNA species. Designing novel reliable structural measures will help to develop effective nc RNA gene finding tools. This paper introduces a new RNA structural measure based on a novel RNA secondary structure ensemble constrained by characteristics of native RNA tertiary structures. The new method makes it possible to achieve a performance leap from the previous structure-based methods. Test results on standard nc RNA datasets（benchmarks） demonstrate that this method can effectively separate most nc RNAs families from genome backgrounds.

关键词： RNA secondary structure RNA tertiary structure Inside algorithm

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Application Research of Music Therapy in Mental Health of Special Children

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International Journal of Mental Health Promotion 2023年第6期25卷 735-754页

作者： yingfeng wang School of Music Jiangxi Normal UniversityNanchang330022China

A healthy psychological state is the premise for children to carry out various *** surveys have shown that children with special needs are affected by their own obstacles and are more prone to psychological problems such as sensitivity,low self-esteem,and ***,it is necessary to provide more sys-tematic mental health education support for special *** health education programs are an efficient form of maintaining children’s mental ***,in thefield of special education,the number of mental health education courses developed according to the physical and mental characteristics and developmental needs of special children is relatively small,and there are many difficulties in the implementation *** dis-order(ASD)is a kind of pervasive developmental dysfunction that is relatively common and representative in clinical *** recent years,the number of autistic children has continued to surge,and has gradually expanded from a family problem to a serious social *** present,the evaluation of the effect of autism intervention mainly relies on various behavioral scales,which are subjective to a certain *** the same time,due to the unclear pathogenesis of autism,the treatment of autism cannot be predicated on the right medicine,and can only be intervened in various *** purpose of this paper is to explore the difference between the EEG signals of autistic children and typically developing control(TD)children through the analysis method of EEG signals,and based on the analysis of EEG signals from an objective point of view,to study whether the music therapy method of Chinese Zither playing training can effectively Improving the brain functional status of chil-dren with autism yields positive therapeutic *** experimental results show that the complexity of brain electrical signals of ASD children is much lower than that of TD children,and there is a significant difference in the brai

关键词： Special children mental health education brain function state music therapy Chinese zither performance training

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Joint Communication and Processor Frequency Selection for Low-Energy Systems under Timing Constraints

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China Communications 2010年第4期7卷 132-136页

作者： wang yingfeng LIU Zhijing School of Computer Science and Technology Xidian University xi＇an China

This paper presents a method to reduce the energy consumption of multi-core systems characterized by processor cores and buses with discrete frequency levels under timing *** proposed method takes the transformations of the original task graphs,which include dependent tasks located in different iterations,as *** proposed method utilizes mapping selection as well as joint processor and communication frequency scaling to implement energy *** conduct experiments on several random task *** results show that the proposed method can achieve substantial energy reduction compared with previous work under the same hard timing constraints.

关键词： Green Computing Dynamic Voltage Scaling Multi-core Adaptive Body Bias

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具有可生物降解、细胞相容、抗菌及生物膜控制的壳聚糖磺基甜菜碱衍生物薄膜生物材料的研究

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Engineering 2024年第4期35卷 95-103页

作者： Maoli Yin yingfeng wang Xuehong Ren Tung-Shi Huang School of Textile and Garment Anhui Polytechnic UniversityWuhu 241000China State Key Laboratory of New Textile Materials and Advanced Processing Technologies&Key Laboratory of Textile Fiber and Products Ministry of Education&Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and ApplicationSchool of Textile Science and EngineeringWuhan Textile UniversityWuhan 430200China Department of Poultry Science Auburn UniversityAuburnAL 36849USA

The purpose of this research was to develop a chitosan sulfobetaine(CS-SNCC)film via the solutioncasting method as a biodegradable antibacterial material for biomedical *** and monochloro-triazine sulfobetaine were used as the raw materials for CS-SNCC preparation,and Fourier-transform infrared(FTIR),ultraviolet–visible(UV-Vis),energy-dispersive X-ray(EDX),and Xray photoelectron spectroscopy(XPS)spectra were used to characterize and analyze the structure of the synthesized ***,the swelling property,thermal stability,biodegradability,cytocompatibility,and antibacterial properties of the CS-SNCC film were comprehensively investigated and compared with those of the chitosan *** results for the film’s enzymatic biodegradation behavior show that the CS-SNCC film undergoes a weight loss of 45.54%after 21 days of *** addition,the CS-SNCC film effectively resists bacterial adhesion,prevents the formation of bacteria biofilms,and exhibits high antibacterial activity,with inactivation rates of 93.43%for Escherichia coli and 91.00%for Staphylococcus ***,the CS-SNCC film shows good cellular activity and cytocompatibility according to the cytotoxicity ***,the prepared biodegradable,cytocompatible,antibacterial,and biofilm-controlling CS-SNCC film has potential for biomedical applications.

关键词： Chitosan Sulfobetaine Antibacterial Biofilm-controlling Film

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Philosophical Consideration about the Sustainable Development of the Economy in West China

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Ecological Economy 2005年第3期1卷 103-107页

作者： wang Tingfeng Moral Education Dept. China West Normal University Nanchong 637002P.R.China

To realize the sustainable development of the economy of West China is not merely a great economic problem, butalso a great national problem and political issue. The economic activity is a practical activity for the economic subject. Theeconomic development view, values, and the natural view of the economic subject determine the choice of the behavior of themain body in the economic activity. Only the behavior of the economic subject according with its demands could make theeconomy of west China have a sustainable development. Therefore, establishing the development view, the values and naturalview of the economic subject for sustainable development becomes a realistic problem that is worth of thinking.

关键词： western economy sustainable development, philosophical thinking

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Time Series Forecasting Using a Hybrid Adaptive Particle Swarm Optimization and Neural Network Model

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Journal of Systems Science and Information 2014年第4期2卷 335-344页

作者： Yi XIAO John J.LIU Yi HU yingfeng wang Central China Normal University Center for Transport Trade and Financial Studies School of Management School of Information Management University of Chinese Academy of Sciences City University of Hong Kong

For time series forecasting, the problem that we often encounter is how to increase the prediction accuracy as much as possible with the irregular and noise data. This study proposes a novel multilayer feedforward neural network based on the improved particle swarm optimization with adaptive genetic operator(IPSO-MLFN). In the proposed IPSO, inertia weight is dynamically adjusted according to the feedback from particles’ best memories, and acceleration coefficients are controlled by a declining arccosine and an increasing arccosine function. Further, a crossover rate which only depends on generation and does not associate with the individual fitness is designed. Finally, the parameters of MLFN are optimized by IPSO. The empirical results on the container throughput forecast of Shenzhen Port show that forecasts with IPSO-MLFN model are more conservative and credible.

关键词： time series forecasting particle swarm optimization genetic operator multilayer feedforward neural network

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改性壳聚糖抗菌纳米微球的制备

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高等学校化学学报 2019年第1期40卷 173-179页

作者：殷茂力王英沣任学宏江南大学纺织服装学院生态纺织教育部重点实验室无锡214122

以卤胺化合物为抗菌基团对壳聚糖接枝改性,并制备成纳米微球,提高壳聚糖的抗菌性能.通过核磁共振和紫外光谱对改性壳聚糖进行结构表征;探讨了改性壳聚糖浓度、三聚磷酸钠浓度及两者体积比对纳米微球的形成和粒径分布的影响;测定了纳米... 详细信息

以卤胺化合物为抗菌基团对壳聚糖接枝改性,并制备成纳米微球,提高壳聚糖的抗菌性能.通过核磁共振和紫外光谱对改性壳聚糖进行结构表征;探讨了改性壳聚糖浓度、三聚磷酸钠浓度及两者体积比对纳米微球的形成和粒径分布的影响;测定了纳米微球的抗菌性能.结果表明,在改性壳聚糖浓度为4. 0 mg/m L,三聚磷酸钠浓度为2. 0 mg/m L时,形成的纳米微球形态稳定,粒径分布均匀,氯化后的纳米微球可在30 min内杀灭10~7cfu(cfu为单位体积中的菌落总数)的金黄色葡萄球菌和大肠杆菌,表现出优异的抗菌性能.

关键词：壳聚糖卤胺化合物纳米微球抗菌性能

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英国体育管理及体育政策的演进研究

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天津体育学院学报 2011年第3期26卷 251-254页

作者：王英峰人民体育出版社图书编辑部北京100061

英国政府部门通过制定一系列体育政策和发展计划管理体育的模式对我国体育管理和体育体制改革提供了非常有益的借鉴。通过对近代英国体育管理和一系列的体育管理政策进行分析和研究,结果表明:当前的英国体育政策强调群众体育和竞技体育... 详细信息

英国政府部门通过制定一系列体育政策和发展计划管理体育的模式对我国体育管理和体育体制改革提供了非常有益的借鉴。通过对近代英国体育管理和一系列的体育管理政策进行分析和研究,结果表明:当前的英国体育政策强调群众体育和竞技体育这两个重要的方面,《未来的全民体育》和《奥运会计划》是英国政府近一段时期的重要体育政策文件,其核心内容是:(1)通过加强学校体育促进青少年更多地参与体育运动;(2)通过大力开展群众体育运动,在全社会推广终身体育;(3)通过培养优秀体育运动人才,推广竞技体育计划。虽然群众体育得到了英国政府的一贯支持,但是,在近几年英国政府还是在一定程度上向竞技体育倾斜。

关键词：英国体育管理体育政策

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中央苏区音乐活报剧考述

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音乐艺术（上海音乐学院学报） 2022年第2期 31-44页

作者：王颖峰江西师范大学吉安343009 井冈山大学中国共产党革命精神与文化资源研究中心

中央苏区的音乐活报剧是以音乐、舞蹈为主要表现手段的戏剧样式。中央苏区早期化妆宣传活动为活报剧在苏区的发展提供了良好的环境;从活报到活报剧再到音乐活报剧,从最初只演不说到又演又说再到载歌载舞,音乐活报剧不断完善,弥补了早期... 详细信息

中央苏区的音乐活报剧是以音乐、舞蹈为主要表现手段的戏剧样式。中央苏区早期化妆宣传活动为活报剧在苏区的发展提供了良好的环境;从活报到活报剧再到音乐活报剧,从最初只演不说到又演又说再到载歌载舞,音乐活报剧不断完善,弥补了早期活报剧的部分不足;歌唱、舞蹈以及内奏音乐、音效模拟、催幕曲、出场曲等辅助手段,极大提升了音乐活报剧的艺术感染力,为中央苏区的革命宣传插上了音乐的翅膀,也为延安秧歌剧的兴起提供了最直接的经验。

关键词：中央苏区音乐活报剧催幕曲

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