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Improved source assessment of Si,Al and related mineral components to PM_(10) based on a daily sampling procedure

Journal of Environmental Sciences 2010年第4期22卷 582-588页

作者： ge Peng Hans Puxbaum Heidi Bauer Nicole Jankowski Yao Shi chemical Engineering college Ningbo University of Technology Ningbo 315016 China. Institute for chemical Technologies and Analytics Vienna University of Technology Vienna 1060 Austria college of Environmental and Resource Sciences Zhejiang University Hangzhou 310027 China

Samples obtained from an industrialized valley in the East Alpine region were collected daily for a half year and analyzed using X-ray fluorescence to examine the elements Si, Al, Fe, ca, Mg, Na, K, zn, P, S and cl. Some factors affecting the changes of these elements were considered, including time, elemental correlations, weekday, weekend and seasonal changes. Diagnostic analysis provided an insight into a decoupling behavior that occursin siliceous and carbonates minerals. A decrease in Si and Al and an increase in carbonates, Na, K, zn and P were observed during the cold season. However, a consistently high correlation of Si and Al was observed in all seasons. It was established that such high levels originated from street surface abrasion. The increase in variability and absolute levels of carbonates during the cold season was demonstrated by adding carbonates to the street surface as gritting material to increase the grip on snowy surfaces. A marked increase in Na and cl was observed in winter which may have been caused by thaw salt that is widely used in winter in Austria. This was associated with a significant increase in K, zn, and P in the cold season that was the result of domestic space heating with wood. PM10 levels in December were 12 μ/m^3 and were higher than levels detected in July. It was established that such high levels originated from mineral oxides, wood smoke, and inorganic ionic material（s）.

关键词： particulate matter PM10 mineral aerosol silicates carbonates street dust wood combustion thaw salt

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新内生发展理论下新疆伊犁州树上干杏产业发展研究

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北方园艺 2024年第16期 138-143页

作者：葛晓军阿依波塔·阿那克塔西路柯怡伊犁师范大学霍尔果斯商学院新疆伊宁835000 新疆口岸经济发展与管理研究中心新疆伊宁835000

该研究利用新内生发展理论,基于外在力量和内在力量研究视角,阐析伊犁州树上干杏产业的发展演变;通过分析伊犁州树上干杏产业不同时期的发展特点发现,在伊犁州树上干杏产业兴起阶段,外在力量对产业的生成产生直接的主要带动作用,为产业... 详细信息

该研究利用新内生发展理论,基于外在力量和内在力量研究视角,阐析伊犁州树上干杏产业的发展演变;通过分析伊犁州树上干杏产业不同时期的发展特点发现,在伊犁州树上干杏产业兴起阶段,外在力量对产业的生成产生直接的主要带动作用,为产业发展夯实了基础;伴随伊犁州树上干杏产业进入新发展阶段,内部力量逐步转为树上干杏产业发展的支撑力量,而外在力量则从直接参与者逐步转为树上干杏产业的生产要素和政策支持者,2种力量在树上干杏产业发展中融合协调,共同促动树上干杏产业高质高效发展。

关键词：伊犁州树上干杏产业新内生发展理论外在力量内在力量

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Efficient Multi-rate Encoder of Qc-LDPc codes Based on FPGA for WIMAX Standard

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chinese Journal of Electronics 2017年第2期26卷 250-255页

作者： WANG Xiumin ge Tingting LI Jun SU chen HONG Fangfei college of Information Engineering China Jiliang University National Mobile communications Research Laboratory Southeast University

An efficient multi-rate encoder for IEEE802.16e LDPc codes which outperforms current single rate encoders with acceptable hardware consumption and efficient memory consumption is *** design utilizes the common dual-diagonal structure in parity matrices to avoid the inverse matrix operation which requires extensive *** Matrix-vector multiplication(MVM) units,bidirectional operation and storage compression are applied to this multi-rate encoder to increase the encoding speed and significantly reduce the quantity of memory bits *** proposed encoding architecture also contributes to the design of multi-rate encoders whose parity matrices are dual-diagonally structured and have an Approximately lower triangular(ALT)form,such as in IEEE 802.11n and IEEE *** results verified that the proposed encoder can efficiently work for all code rates specified in WIMAX *** a maximum clock frequency of 117 MHz,the encoder achieves 3 to 10 times higher throughput than prior *** proposed encoder is capable to switch among six rates by adjusting the input parameter and it achieves the throughput up to 1Gbps.

关键词： Encoder Multi-rate FPGA Dual Diagonal WIMAX

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两级自适应调频模式分解-同步提取变换的故障诊断方法

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噪声与振动控制 2024年第2期44卷 88-94,155页

作者：葛丽英李志农胡志峰毛清华张旭辉南昌航空大学无损检测技术教育部重点实验室南昌330063 西安科技大学陕西省矿山机电装备智能监测重点实验室西安710054

同步提取变换(Synchroextracting Transform,SET)处理强干扰信号分量时缺乏自适应性而易发生频率模糊,导致难以精确提取快速波动的瞬时频率。针对此问题,结合自适应调频模式分解(Adaptive chirp Mode Decomposition,AcMD)的自适应先验... 详细信息

同步提取变换(Synchroextracting Transform,SET)处理强干扰信号分量时缺乏自适应性而易发生频率模糊,导致难以精确提取快速波动的瞬时频率。针对此问题,结合自适应调频模式分解(Adaptive chirp Mode Decomposition,AcMD)的自适应先验信息和贪婪算法的优势,将AcMD引入到SET中,构造一种两级AcMD-SET故障诊断方法。在提出的方法中,将基于基尼指数(Gini Index,GI)最大化准则的分量选择重组算法和第一级AcMD结合,提取出强干扰下的多模态故障脉冲信号的模式。然后,利用SET对第二级AcMD分离出的时变频率故障特征进行高精度的时频表示。将此方法应用到仿真调频-调幅信号中,得到高分辨率的故障特征,方法的有效性得到验证。最后,将所提方法应用于航空发动机高速滚动轴承的振动信号分析中,结果表明,所提方法能有效地提取高速滚动轴承振动信号的时变故障特征频率,其结果明显优于SET方法。

关键词：故障诊断同步提取变换自适应调频模态分解滚动轴承

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Predicting hicE inhibitors based upon pharmacophore models derived from the receptor and its ligands

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Science china chemistry 2013年第10期56卷 1402-1412页

作者： zHANG GuoDong ge Hu GU Qiong XU Jun School of Pharmaceutical Sciences Sun Yat-sen University

Human intestinal carboxyl esterase （hicE） is a drug target for ameliorating irinotecan-induced diarrhea. By reducing irinotecan- induced diarrhea, hicE inhibitors can improve the anti-cancer efficacy of irinotecan. To find effective hicE inhibitors, a new virtual screening protocol that combines pharmacophore models derived from the hicE structure and its ligands has been pro- posed. The hicE structure has been constructed through homology techniques using hcESI＇s crystal structure. The hicE structure was optimized via molecular dynamics simulations with the most known active hicE inhibitors docked into the structure. An optimized pharmacophore, derived from the receptor, was then generated. A ligand-based pharmacophore was also generated from a larger set of known hicE inhibitors. The final hicE inhibitor predictions were based upon the virtual screening hits from both ligand-based and receptor-based pharmacophore models. The hit rates from the ligand-based and receptor-based pharmacophore models are 88% and 86%, respectively. The final hit rate is 94%. The two models are highly consistent with one another （85%）. This proves that both models are reliable.

关键词： carboxyl esterase pharmacophore virtual screening anti-cancer

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cold expansion technology of connection holes in aircraft structures:A review and prospect

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chinese Journal of Aeronautics 2015年第4期28卷 961-973页

作者： Fu Yucan ge Ende Su Honghua Xu Jiuhua Li Renzheng college of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics

As one kind of key anti-fatigue manufacture approaches with simplicity and effectiveness, the hole cold expansion technology satisfies the increasing needs for light weight and durability of aircraft *** can improve the fatigue life by several times at no additional weight *** hole cold expansion technology has been widely used in manufacturing and repairing of both fighters and commercial aircraft, and has become a research hotspot in the strengthening *** recent years, hole cold expansion process methods, residual stress around expanded holes, the behavior of fatigue crack initiation and propagation, and fatigue lives after cold expansion are researched extensively through lots of experiments and finite element simulations.A review on the hole cold expansion technology research status in the last twenty years is presented in this *** the analysis of the current characteristics and defects of the hole cold expansion technology, combined with the actual needs in design and manufacture of new-generation aircraft, development trends and novel research directions are presented for realizing precise and high-efficiency anti-fatigue manufacture.

关键词： Aircraft structure cold expansion connection hole Fatigue life Finite element simulation Residual stress

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Nanocarbon-based electrode materials applied for supercapacitors

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Rare Metals 2022年第12期41卷 3957-3975页

作者： Yu-Xiang Yang Kang-Kang ge Sajid ur Rehman Hong Bi School of chemistry and chemical Engineering School of Materials Science and EngineeringAnhui UniversityHefei 230601China cIRIMAT UMR CNRS 5085UniversitéPaul Sabatier ToulouseⅢToulouse 31062France cAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China

As one of the promising energy storage and conversion systems,supercapacitors(Scs)are highly favored owing to their high power density and good service *** all the key components of supercapacitor devices,the design and investigation of electrode materials play an essential role in determining the whole electrochemical charge storage ***,nanocarbon-based materials(e.g.,graphene,carbon dots,graphene quantum dots,etc.)have been widely used as Sc electrode materials because of their good physical structure and chemical properties,providing a new route to further improve the energy density and life span of ***,we review the latest progress of nanocarbon-based materials(including nanocarbon and nanocarbon-based composite materials)as electrode materials in Scs *** recent progress of carbon dots,graphene,carbon nanotubes,and other nanocarbon materials electrodes is summarized,while the capacitance and energy density of the above nanocarbon electrodes still need to be ***,the preparation and performance of nanocarbonbased composite electrodes comprising transition metal oxides,conductive polymer,and metal-organic framework derived porous carbon are ***,we outline major challenges and propose some ideas on building better nanocarbon-based Sc electrodes.

关键词： Supercapacitor(Sc) Nanocarbon Electrode materials carbon dots Nanocarbon-based composite

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Will china achieve its 2060 carbon neutral commitment from the provincial perspective?

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Advances in climate change Research 2022年第2期13卷 169-178页

作者： Li-Li SUN Hui-Juan cUI Quan-Sheng ge Key Laboratory of Land Surface Pattern and Simulation Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of chinese Academy of Sciences Beijing 100049China cNOOc Research Institute Ltd. Beijing 100027China

china has pledged to peak carbon emissions before 2030 and strive to achieve carbon neutrality before ***,the significant variations of provincial carbon emissions make it unclear whether they can jointly fulfill the national carbon peak and neutrality ***,this study predicts the emission trajectories at provincial level in china by employing the extended STIRPAT(Stochastic Impacts by Regression on Population,Affluence,and Technology)model to see the feasibility and time of reaching peak carbon emissions and carbon *** found that most provinces can achieve peak emission before 2030 but challenging to achieve carbon neutrality before 2060,even considering the ecological carbon *** provincial neutrality time is concentrated between 2058 and 2070;the sooner the carbon emission peaks,the earlier the carbon neutral will be *** aggregated carbon emissions at provincial level show that china can achieve its carbon emission peak of 9.64-10.71 Gt before 2030,but it is unlikely to achieve the carbon neutrality goal before 2060 without carbon capture,utilization,and storage(ccUS).With high ccUS development,china is expected to achieve carbon neutrality in 2054-2058,irrespective of the socio-economic *** low ccUS development,china's carbon neutrality target will be achieved only under the accelerated-improvement scenario,while it will postpone to 2061 and 2064 under the continued-improvement and the business-as-usual scenarios,respectively.

关键词： china's carbon neutrality Peak emission Provincial emission ccUS STIRPAT

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cFETR 胀板式杜瓦冷屏的初步设计与热分析

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核聚变与等离子体物理 2024年第1期44卷 36-42页

作者：柴永生崔立民葛剑陈兆波张龙庞雪威烟台大学机电汽车工程学院烟台264005 中国科学院合肥物质研究院等离子体物理研究所合肥230031 烟台欣和企业食品有限公司烟台264006

为进一步减少托卡马克装置中超导磁体的热负荷,将胀板结构应用于杜瓦冷屏(cTS)中,代替传统管板式冷屏结构。胀板结构是一种在屏蔽板间形成冷却介质流动的夹层空间结构。选择304LN不锈钢作为cTS材料,选择模压-焊接作为cTS成型方式,选择... 详细信息

为进一步减少托卡马克装置中超导磁体的热负荷,将胀板结构应用于杜瓦冷屏(cTS)中,代替传统管板式冷屏结构。胀板结构是一种在屏蔽板间形成冷却介质流动的夹层空间结构。选择304LN不锈钢作为cTS材料,选择模压-焊接作为cTS成型方式,选择氦气作为冷却剂。确定了最佳焊点参数及屏蔽板参数。首先根据辐射热原理计算杜瓦冷屏表面热流密度,然后应用流体仿真软件cFX对杜瓦冷屏进行热分析,得到了杜瓦冷屏面板温度及进出口压差。分析表明,胀板式杜瓦冷屏面板的温度分布均匀,相比管板式杜瓦冷屏有显著降低,理论上证明了胀板式杜瓦冷屏结构的优越性。

关键词： cFETR 核聚变杜瓦冷屏热辐射热分析

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Effect of herbicide acetochlor on cytochrome P450 monooxygenases and GST of earthworms Eisenia fetida

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Journal of Environmental Sciences 2006年第1期18卷 135-140页

作者： XIAO Neng-wen LIU Xiang-hui LI Wei ge Feng State Key Lab of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing 100080 China

To assess the sublethal toxicity of the herbicide acetochlor to earthworms and to find out biomarkers possible inducted under acetochlor exposure, Eiseniafetida was exposed to artificial soils supplemented with different concentrations of acetochlor（5, 10, 20, 40 and 80 mg/kg soil）. Effects of the acetochlor on cytochrome P450 monooxygenases p-nitroanisole O-demethylase（ODM）, aldrin epoxidase（AE） and glutathione-S-transferases （GSTs） activities were determined. The results revealed cytochrome P450 monooxygenases were elevated with increasing concentrations of acetochlor, and the AE activity increased significantly compared with control at the concentration of 80 mg/kg （P〈0.05）. However, ODM activity from E. fetida was not induced significantly by acetochlor at all treatments（P〉0.05）. Sodium dodecyl sulfate-polyacryamide gel electrophoresis（SDS-PAge） showed that one protein band was visualized and no evident differences were found in protein profiles between treatments and control. The GST activity increased significantly with longer duration（P〈0.05） and increasing concentrations of acetochlor exposure（P〈0.05）. This study showed that the monooxygenases and GSTs activities in E. fetida could be induced by acetochlor, and thus, the AE and GST could be used in sublethal assays for soil contamination surveys and GST could be used as biomarkers of acetochlor exposure in E. fetida.

关键词： acetochlor Eiseniafetida p-nitroanisole O-demethylase aldrin epoxidase GST

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