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李超代数与Frobenius代数

数学年刊（A辑） 2007年第2期28卷 289-296页

作者：徐晓宁陈良云东北师范大学数学系

利用限制李超代数的新定义,给出了李超代数的p-包络的一些相关结果,并将李代数中表示理论的一些结果推广到李超代数上,进而研究了限制李超代数与Frobenius代数的关系．

关键词：限制李超代数 S-约化泛包络代数 Probenius代数

Bacterial microcompartment-mimicking Pickering emulsion droplets for detoxification of chemical threats under sweet conditions

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Science China Chemistry 2024年第9期67卷 3039-3049页

作者： Xiao xu Wenqi Xie Ting Wu Chen Chen xiaoning Chen Yuheng Yang Hao Lian Hao Chen Xiaofeng Cheng Zhitong Chen Guojun Chen Chaoqun Liu Lanlan Chen Yu He Zhaowei Chen Bernard P.Binks Huanghao Yang New Cornerstone Science Laboratory MOE Key Laboratory for Analytical Science of Food Safety and BiologyCollege of ChemistryFuzhou UniversityFuzhou 350002China Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Biomedical Engineering and the Rosalind&Morris Goodman Cancer Research Institute McGill UniversityMontreal QC H3A 1A3Canada School of Pharmacy Henan UniversityKaifeng 475004China Department of Chemistry University of HullHull HU67RXUK

Chemical warfare agents represent a severe threat to mankind and their efficient decontamination is a global ***,traditional disposal strategies have limitations,including high energy consumption,use of aggressive reagents and generation of toxic ***,inspired by the compartmentalized architecture and detoxification mechanism of bacterial microcompartments,we constructed oil-in-water Pickering emulsion droplets stabilized by hydrogen-bonded organic framework immobilized cascade enzymes for decontaminating mustard gas simulant(2-chloroethyl ethyl sulfide,CEES)under sweet *** exemplified droplet systems were developed with two-enzyme(glucose oxidase/chloroperoxidase)and threeenzyme(invertase/glucose oxidase/chloroperoxidase)cascades,both achieving over 6-fold enhancement in decontamination efficiency compared with free enzymes and>99% selectivity towards non-toxic *** found that the favored mass transfer of sugars and CEES from their respective phases to approach the cascade enzymes located at the droplet surface and the facilitated substrate channeling between proximally immobilized enzymes were key factors in augmenting the decontamination *** importantly,the robustness of immobilized enzymes enabled easy reproduction of both the droplet formation and detoxification performance over 10 cycles,following long-term storage and in far-field locations.

关键词： Pickering emulsion biomimetics chemical warfare agent bacterial microcompartment biocatalysis

设计管理视角下的设计与市场营销思维的对立与共生

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设计艺术研究 2011年第5期1卷 40-42,128页

作者：徐小宁山东工艺美术学院济南250300

越来越多的企业把设计当作一种战略工具,因为设计可以赋予产品附加价值,提供差异化的产品和服务。一个好的设计,意味着培养众多的忠实消费者和高额的利润。市场营销人员已经意识到与设计的互动是帮助产品赢得市场份额的重要手段。设计... 详细信息

越来越多的企业把设计当作一种战略工具,因为设计可以赋予产品附加价值,提供差异化的产品和服务。一个好的设计,意味着培养众多的忠实消费者和高额的利润。市场营销人员已经意识到与设计的互动是帮助产品赢得市场份额的重要手段。设计的重要作用被越来越多的人所接受,但由于设计与市场营销有着不同的工作技能和工作方法,它们之间必然产生冲突,但这种对立会随着设计管理思想的逐渐渗透而被化解。通过讨论设计与市场的关系,以探求新产品开发过程中努力提高设计与市场的互动作用。

关键词：市场营销设计战略价值

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基于自抗扰控制技术的微网运行控制器

高电压技术 2016年第10期42卷 3336-3346页

作者：徐晓宁周雪松马幼捷高志强天津大学电气与自动化工程学院天津300072 天津理工大学自动化学院天津300384 天津市复杂控制理论及应用重点实验室天津300384

随着微网技术的成熟和发展,微网将不再局限于实验平台和示范工程,微网与大电网之间的友好协作变得至关重要。为此,将自抗扰控制技术(ADRC)的思想应用到了微网的并网控制中,设计了一种使微网在并网与孤岛之间切换以及负荷扰动等运行状况... 详细信息

随着微网技术的成熟和发展,微网将不再局限于实验平台和示范工程,微网与大电网之间的友好协作变得至关重要。为此,将自抗扰控制技术(ADRC)的思想应用到了微网的并网控制中,设计了一种使微网在并网与孤岛之间切换以及负荷扰动等运行状况下,与大电网之间稳定和平滑协作的二阶非线性ADRC运行控制器;通过仿真验证,基于ADRC的微网运行控制器对网内电压、电流控制可以达到无相位差平滑控制,且频率波动范围满足国际标准±0.1 Hz的要求,控制效果优于传统的基于PID的控制器。与此同时,利用李雅普诺夫稳定性方法证明了该二阶ADRC中三阶扩张状态观测器(ESO)的稳定性问题。

关键词：微网并网孤岛扰动自抗扰控制技术 PID 李雅普诺夫三阶ESO

Riverine sulfate sources and behaviors in arid environment,Northwest China:Constraints from sulfur and oxygen isotopes

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Journal of Environmental Sciences 2024年第3期137卷 716-731页

作者： Yifu xu Wenjing Liu Bing xu Zhifang xu Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

The fate of riverine sulfate ion (SO_(4)^(2-)) and its environmental effects in arid environment are difficult to evaluate due to its complicated sources and strongly coupled behaviors with water cycle which is significantly modified by *** understand the sulfur cycle in aquatic systems in arid environment,the chemical and sulfur and oxygen isotopic compositions (δ^(34)S_(SO4)and δ^(18)O_(SO4)) of major rivers around the Badain Jaran Desert,northwestern China,were *** rivers had averaged SO_(4)^(2-)content at 1336μmol/L,over 10times higher than the global *** δ^(34)S_(SO4)and δ^(18)O_(SO4)values ranged from-5.3‰to+11.8‰and+1.6‰to+12.8‰,*** end-member analysis and the inverse model showed that riverine sulfate was mainly derived from evaporites dissolution (0-87%),sulfide oxidation (13%-100%) and precipitation (0-33%),indicating heterogeneity in sulfur sources and behaviors along the river drainage with the lithology variations and climate *** isotopic tools combining with hydro-chemistry compositions could be applied to reveal sulfur cycle in arid *** on the calculation,sulfide oxidation plays the primary role in the headwater and upstream in the Qilian-Mountains area,where sulfide is widely *** the proportion of evaporites dissolution contributing to riverine sulfate is much higher in downstream in a drier ***,less precipitation and higher temperature can lead to more intensive evaporation,affecting the process of sulfide oxidation and enhancing the rates of evaporites dissolution and sulfate precipitation in the basin.

关键词： Sulfur and oxygen isotopes Source apportionment Inverse model Arid environment Inland rivers Northwestern China

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国铁与城轨列控系统互联互通的技术方案研究

铁道工程学报 2023年第11期40卷 83-86,117页

作者：徐效宁李辉王菲吕书丽王文涛中国铁道科学研究院集团有限公司北京100081

研究目的:近年来,随着我国铁路运输网的不断发展和城市群一体化轨道交通网的建设,为实现资源共享、提升旅客出行效率,干线铁路、城际铁路、市域(郊)铁路、城市轨道交通存在融合发展的需求。作为保证行车安全的关键系统——列控系统的互... 详细信息

研究目的:近年来,随着我国铁路运输网的不断发展和城市群一体化轨道交通网的建设,为实现资源共享、提升旅客出行效率,干线铁路、城际铁路、市域(郊)铁路、城市轨道交通存在融合发展的需求。作为保证行车安全的关键系统——列控系统的互通性是一个重要的研究方向。本文通过归纳总结国内外铁路列控系统互联互通的方案,提出我国国铁与城轨列控系统互通性的方案。研究结论:(1)归纳总结国内外铁路列控系统互联互通技术方案,分析各自采用的技术路线;(2)提出了国铁和城轨线路衔接处设置共管区域,车载设备通过地面应答器完成控制权切换的互联互通方案;(3)提出了车载设备分散式和集成式的两种集成方式,建议前期按分散式方案实施;(4)提出了国铁不同CTCS等级线路与城轨CBTC互联互联的地面应答器布置方案;(5)本研究成果可为国铁和城轨交通列控系统的融合提供参考和借鉴。

关键词：列控系统互联互通国铁城轨 CTCS CBTC

Laboratory evaluation of high-friction thin overlays for pavement preservation

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Frontiers of Structural and Civil Engineering 2024年第6期18卷 936-948页

作者： Ouming xu Rentao xu Lintong JIN School of Highway Chang’an UniversityXi’an 710064China School of Materials Science and Engineering Chang’an UniversityXi’an 710061China

Traditional asphalt concrete(AC)and stone matrix asphalt(SMA),which are used as thin asphalt overlays,are common maintenance strategies to enhancing ride quality,skid resistance,and ***,several studies have used a novel asphalt mixture known as a high-friction thin overlay(HFTO)to improve surface ***,it remains uncertain whether the laboratory properties of HFTO differ significantly from those of conventional *** study aims to evaluate the laboratory properties of HFTO mixtures and compare them with those of AC and *** mixtures with nominal maximum size of 9.5 mm were produced in the laboratory,and performance tests were conducted,including wheel tracking test,low temperature flexural creep test,moisture susceptibility test,Cantabro Abrasion Test,Marshall Test,sand patch test,British pendulum test,and indoor tire-rollingdown *** results showed that the HFTO exhibited a lower tire/pavement noise than the AC and ***,HFTO had superior high-temperature stability,larger macro texture,and higher skid resistance in comparison to those of AC,but lower than those of ***,HFTO mixtures may be considered a suitable replacement for traditional AC mixtures in regions where skid resistance and noise reduction are concerns.

关键词： road engineering pavement maintenance high friction thin overlay performance skid resistance tire/pavement noise

Aldehyde oxidase mediated enantioselective metabolic health risk of dinotefuran

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Science China Chemistry 2024年第6期67卷 2079-2091页

作者： Liwei xu Xinxin xu Hua Kuang Chuanlai xu Xiaoling Wu State Key Laboratory of Food Science and Resources Jiangnan UniversityWuxi214122China International Joint Research Laboratory for Biointerface and Biodetection and School of Food Science and Technology Jiangnan UniversityWuxi214122China Collaborative Innovation center of Food Safety and Quality Control in Jiangsu Province Jiangnan UniversityWuxi214122China

Chiral pollutants often pose significant differential environmental health *** this study,the biotransformation of chiral dinotefuran(DIN)and its enantioselective metabolic toxicity mechanisms have been systemically ***,reversedphase chromatography-high resolution mass spectrometry was developed to quantify the content of DIN R/S chiral enantiomer with pg level sensitivity,revealing a lower elimination rate constant(K_(e))of S-DIN(0.730 h^(-1))than R-DIN(0.746 h^(-1)).Secondly,the interaction mechanism between DIN metabolism and important endogenous bioactive molecules,such as aldehyde oxidase(AOX)and neurotransmitters,was *** DIN nitro-group was converted into a guanidine group by the reducing site of nearby flavin adenine dinucleotide(FAD)in AOX with the preferred higher affinity of ***,the endogenous tryptophan(Trp)aldehyde metabolic intermediate,5-hydroxyindoleacetaldehyde(5-HIAL),provides a persistent electron donor for DIN reduction via the oxidation-catalyzed site in AOX,resulting in remarkable up-regulation of monoamine neurotransmitters such as serotonin and ***,the higher level of neurotransmitters further mediated dysregulation of oxylipin homeostasis via the serotonergic pathway,where S-DIN exhibited more pronounced liver lipid damage and environmental health risk with the accumulated lipid biomarkers,oxidized triglyceride(OxTG)and oxidized sphingomyelin(OxSM).This study elucidates the AOX-mediated enantioselectivity metabolic pathway of DIN,providing a new analytical method for chiral pollutants and paves the way for their health risk assessments.

关键词： neonicotinoid dinotefuran enantiomer aldehyde oxidase metabolomics health risk

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中国水环境污染与经济增长关系研究

西北农林科技大学学报（社会科学版） 2017年第6期17卷 66-74页

作者：冯颖李晓宁屈国俊徐梅西北政法大学商学院/资源冲突与利用研究所西北政法大学经济学院西安710122

运用水环境污染与经济发展的省级面板数据,构建二者相互影响关系的联立方程模型。研究表明:中国经济发展与水环境污染之间相互影响,水污染排放物与人均GDP之间呈现出显著的"N型"曲线关系;3个污染物指标表现出不同的经济临界点,其中人均... 详细信息

运用水环境污染与经济发展的省级面板数据,构建二者相互影响关系的联立方程模型。研究表明:中国经济发展与水环境污染之间相互影响,水污染排放物与人均GDP之间呈现出显著的"N型"曲线关系;3个污染物指标表现出不同的经济临界点,其中人均废水排放量已超越第二个临界点,而人均COD排放量和人均氨氮排放量处于两个临界点之间;工业产值比重上升带来了人均COD排放量的增长,而人口密度的增加降低了COD的排放量,水污染治理投资额的增加却促使COD排放增加;人力资本、人均社会资本存量与人均财政支出与对经济增长有促进作用。

关键词：水环境污染经济增长联立方程 EKC