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Facilitated Prediction of Micropollutant Degradation via UV-AOPs in Various Waters by Combining Model Simulation and Portable Measurement

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Engineering 2024年第6期37卷 87-95页

作者： Yanyan Huang mengkai li Zhe Sun Wentao li James R.Bolton Zhimin Qiang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Civil and Environmental Engineering University of AlbertaEdmontonAB T6G 1H9Canada State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The degradation of micropollutants in water via ultraviolet(UV)-based advanced oxidation processes(AOPs)is strongly dependent on the water *** reactive radicals(RRs)formed in UV-AOPs have different reaction selectivities toward water matrices and degradation efficiencies for target ***,process selection and optimization are *** study developed a facilitated prediction method for the photon fluence-based rate constant for micropollutant degradation(K′_(p,MP))in various UV-AOPs by combining model simulation with portable *** methods for measuring the scavenging capacities of the principal RRs(RRSCs)involved in UV-AOPs(i.e.,HO^(·),SO_(4)^(·-),and Cl^(·))using a mini-fluidic photoreaction system were *** simulation models consisted of photochemical,quantitative structure–activity relationship,and radical concentration steady-state approximation *** RRSCs were determined in eight test waters,and a higher RRSC was found to be associated with a more complex water ***,by taking sulfamethazine,caffeine,and carbamazepine as model micropollutants,the k′_(p,MP) values in various UV-AOPs were predicted and further verified experimentally.A lower k′_(p,MP) was found to be associated with a higher RRSC for a stronger RR competition;for example,k′_(p,MP) values of 130.9 and 332.5 m^(2) einstein^(–1),respectively,were obtained for carbamazepine degradation by UV/H_(2)O_(2) in the raw water(RRSC=9.47×10^(4) s^(-1))and sand-filtered effluent(RRSC=2.87×10^(4) s^(-1))of a drinking water treatment *** developed method facilitates process selection and optimization for UV-AOPs,which is essential for increasing the efficiency and cost-effectiveness of water treatment.

关键词： UV-AOPs Micropollutant degradation Reactive radicals Water matrix Model simulation

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建筑设计中绿色建筑设计理念的整合应用探究

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工程建设（维泽科技） 2024年第9期7卷 186-188页

作者：李梦凯九易庄宸科技(集团)股份有限公司河北石家庄050000

绿色建筑设计理念以其对环境友好、资源节约和可持续性的强调,在全球范围内逐渐得到推广和应用。随着全球气候变化的加剧和能源危机的日益严重,传统建筑模式的环境成本和能源消耗已不再可持续。实施绿色建筑设计能显著提高建筑的能效,... 详细信息

绿色建筑设计理念以其对环境友好、资源节约和可持续性的强调,在全球范围内逐渐得到推广和应用。随着全球气候变化的加剧和能源危机的日益严重,传统建筑模式的环境成本和能源消耗已不再可持续。实施绿色建筑设计能显著提高建筑的能效,降低运营成本,同时对提升居住者的生活质量和保护自然环境具有积极意义。文中旨在探究绿色建筑设计理念在建筑设计中的整合应用,从环保性、人本性、自然性和地域性等方面进行分析。通过对绿色建筑设计原则的探讨,结合具体应用案例,探讨了在建筑设计中如何有效地整合绿色建筑设计理念,以实现建筑的可持续发展。

关键词：绿色建筑设计可持续发展建筑节能

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中国石斛属(兰科)植物新资料

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广西植物 2024年第5期44卷 1003-1006页

作者：李孟凯余应鹏王伟邢震陈学达西藏农牧学院资源与环境学院西藏林芝860000 西藏农牧学院兰科植物资源中心西藏林芝860000

在西藏开展兰科植物资源调查过程中,发现了2种石斛属(金石斛组)物种,通过文献和标本的查阅之后,分别确定为麦氏金石斛(Dendrobium macraei lindl.)和西藏金石斛(*** King&Pantl.),两者均为中国首次记录。其中,麦氏金石斛与流苏金石斛(**... 详细信息

在西藏开展兰科植物资源调查过程中,发现了2种石斛属(金石斛组)物种,通过文献和标本的查阅之后,分别确定为麦氏金石斛(Dendrobium macraei lindl.)和西藏金石斛(*** King&Pantl.),两者均为中国首次记录。其中,麦氏金石斛与流苏金石斛(*** lindley)近似,不同之处在于前者唇瓣中裂片边缘全缘,中裂片具2条纵脊,并仅延伸至唇瓣中部,先端凹;西藏金石斛虽然植株与狭叶金石斛[***(Blume)lindl.]近似,但该种花很小,萼片和花瓣不具紫色条纹且唇瓣长达1.4 cm,侧裂片三角形,花期时容易区分。同时,该文还提供了该2种石斛属植物详细的形态特征描述以及解剖图版等资料,凭证标本保存于西藏农牧学院标本馆。该发现丰富了中国兰科植物本底资料以及潜在药用植物资源储备,对中国兰科植物的生物多样性研究和药用兰科资源的调查具有重要意义。

关键词：石斛属兰科新记录地理分布西藏中国

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西藏石豆兰属(兰科)植物新记录

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热带作物学报 2024年第3期45卷 481-484页

作者：李孟凯邓建平庞深深陈学达王伟罗艳邢震西藏农牧学院资源与环境学院西藏林芝860000 中国科学院东南亚生物多样性研究所中心/中国科学院西双版纳热带植物园综合保护中心云南勐腊666303 西藏农牧学院兰科植物资源中心西藏林芝860000

石豆兰属是兰科植物中第一大属,也是兰科中分化较快的类群。本研究报道了在中国西藏发现的石豆兰属植物5个省级新记录种,分别为戟唇石豆兰(Bulbophyllum depressum King&Pantling)、圆叶石豆兰(*** Maxim.)、凌氏石豆兰(*** ***,***&***... 详细信息

石豆兰属是兰科植物中第一大属,也是兰科中分化较快的类群。本研究报道了在中国西藏发现的石豆兰属植物5个省级新记录种,分别为戟唇石豆兰(Bulbophyllum depressum King&Pantling)、圆叶石豆兰(*** Maxim.)、凌氏石豆兰(*** ***,***&***)、勐仑石豆兰(*** ***&***)、少花石豆兰(*** Hook.f)。其中戟唇石豆兰与勐仑石豆兰近似,不同之处在于前者花葶极短,唇瓣戟形;圆叶石豆兰为该属比较奇特的种,植株小,不具假鳞茎;凌氏石豆兰与五脉石豆兰近似,不同之处在于前者假鳞茎球形,唇瓣圆柱状;勐仑石豆兰近似于戟唇石豆兰,但前者花葶长于假鳞茎,唇瓣狭状披针形;少花石豆兰植株与小花石豆兰近似,区别在于前者的中萼片边缘具睫毛,侧萼片边缘全缘,唇瓣披针形。此次发现极大地丰富了西藏石豆兰属植物本底资料,有利于更好地开展西藏兰科植物多样性保护。

关键词：石豆兰属兰科新记录地理分布

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西藏兰科植物4新记录种

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高原农业 2024年第1期8卷 19-22页

作者：余应鹏李孟凯章容杰山晓丹邢震西藏农牧学院资源与环境学院西藏农牧学院兰科植物资源中心(OCCT) 西藏林芝860000

通过野外调查和相关资料查阅,本文报道了西藏野生兰科植物新记录种4个,分别为黄绿贝母兰(Coelogyne prolifera lindl.)、叠鞘石斛(Dendrobium denneanum Kerr)、半柱毛兰(Eria corneri Rchb.f.)和叉喙兰(Uncifera acuminata lindl.),并... 详细信息

关键词：西藏兰科新记录

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杀菌紫外发光二极管消毒原理及效果综述

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照明工程学报 2024年第2期35卷 5-16页

作者：王越孙喆赵凯张建芳宋广明李文涛李梦凯强志民中国科学院生态环境研究中心环境水质学国家重点实验室北京100085 中国科学院大学生命科学学院北京100049 深圳安吉尔饮水产业集团有限公司广东深圳518000 中国科学院大学资源与环境学院北京100190

由于清洁环保、不产生消毒副产物等优势,紫外线(Ultraviolet,UV)作为消毒技术已得到广泛应用。作为新兴的UV光源,输出波长在200~300 nm范围内的杀菌紫外线发光二极管(Germicidal Ultraviolet-light Emitting Diodes,GUV-LED)具有输出波... 详细信息

由于清洁环保、不产生消毒副产物等优势,紫外线(Ultraviolet,UV)作为消毒技术已得到广泛应用。作为新兴的UV光源,输出波长在200~300 nm范围内的杀菌紫外线发光二极管(Germicidal Ultraviolet-light Emitting Diodes,GUV-LED)具有输出波长范围广、环境效益高等优势,在消毒领域获得越来越多的关注。本文针对GUV-LED光源、消毒机制和效果方面的研究进展进行了综述:与低压汞灯相比,目前GUV-LED的光电转化效率仍十分有限(孢子>细菌;细菌和病毒更易受核酸损伤被265 nm和260 nm附近的GUV-LED灭活,孢子在265 nm和280 nm附近的灭活效果相近。本文旨在为LED技术在消毒领域的研究和应用提供参考。

关键词：杀菌紫外LED 消毒微生物灭活机制灭活效果

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Macrophage LMO7 deficiency facilitates inflammatory injury via metabolic-epigenetic reprogramming

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Acta Pharmaceutica Sinica B 2023年第12期13卷 4785-4800页

作者： Shixin Duan Xinyi Lou Shiyi Chen Hongchao Jiang Dongxin Chen Rui Yin mengkai li Yuseng Gou Wenjuan Zhao Lei Sun Feng Qian Shanghai Frontiers Science Center of Drug Target Identification and Delivery National Key Laboratory of Innovative ImmunotherapyEngineering Research Center of Cell&Therapeutic AntibodyMinistry of EducationSchool of PharmacyShanghai Jiao Tong UniversityShanghai 200240China

Inflammatory bowel disease(IBD)is a formidable disease due to its complex ***,as a major immune cell population in IBD,are crucial for gut ***,it is still unveiled how macrophages modulate ***,we found that liM domain only 7(LMO7)was downregulated in pro-inflammatory macrophages,and that LMO7 directly degraded 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3(PFKFB3)through K48-mediated ubiquitination in *** an enzyme that regulates glycolysis,PFKFB3 degradation led to the glycolytic process inhibition in macrophages,which in turn inhibited macrophage activation and ultimately attenuated murine ***,we demonstrated that PFKFB3 was required for histone demethylase Jumonji domaincontaining protein 3(JMJD3)expression,thereby inhibiting the protein level of trimethylation of histone H3 on lysine 27(H3K27me3).Overall,our results indicated the LMO7/PFKFB3/JMJD3 axis is essential for modulating macrophage function and IBD *** LMO7 or macrophage metabolism could potentially be an effective strategy for treating inflammatory diseases.

关键词： Inflammatory bowel disease Macrophage LMO7 Ubiquitination PFKFB3 JMJD3

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Degradation of micropolluants in flow-through VUV/UV/H2O2 reactors: Effects of H2O2 dosage and reactor internal diameter

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Journal of Environmental Sciences 2021年第12期33卷 28-37页

作者： Lumeng Zhan Wentao li li liu Tao Han mengkai li Zhimin Qiang 无 Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Geosciences and Natural Resource Management University of CopenhagenFrederiksberg C 1985Denmark Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China School of Environmental Science and Engineering Qingdao UniversityQingdao 266071China

The degradation of atrazine (ATZ),sulfamethoxazole (SMX) and metoprolol (MET) in flowthrough VUV/UV/H2O2reactors was investigated with a focus on the effects of H2O2dosage and reactor internal diameter (ID).Results showed that the micropollutants were degraded efficiently in the flow-through VUV/UV/H2O2reactors following the pseudo first-order kinetics (R2>0.92).However,the steady-state assumption (SSA) kinetic model being vital in batch reactors was found invalid in flow-through reactors where fluid mixing was less *** the increase of H2O2dosage,the ATZ removal efficiency remained almost constant while the SMX and MET removal was enhanced to different extents,which could be explained by the different reactivities of the pollutants towards HO·.A larger reactor ID resulted in lower degradation rate constants for all the three pollutants on account of the lower average fluence rate,but the change in energy efficiency was much more *** reality,the electrical energy per order (EEO) of the investigated VUV/UV/H2O2treatments ranged between 0.14–0.20,0.07–0.14 and 0.09–0.26 k Wh/m3/order for ATZ,SMX and MET,respectively,with the lowest EEOfor each pollutant obtained under varied H2O2dosages and reactor *** study has demonstrated the efficiency of VUV/UV/H2O2process for micropollutant removal and the inadequacy of the SSA model in flow-through reactors,and elaborated the influential mechanisms of H2O2dosage and reactor ID on the reactor performances.

关键词： VUV/UV/H2O2 Flow-through reactor Degradation H2O2 dosage Reactor internal diameter

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CAV driving safety monitoring and warning via V2X-based edge computing system

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Frontiers of Engineering Management 2024年第1期11卷 107-127页

作者： Cheng CHANG Jiawei ZHANG Kunpeng ZHANG Yichen ZHENG mengkai SHI Jianming HU Shen li li li Department of Automation Tsinghua UniversityBeijing 100084China College of Electrical Engineering Henan University of TechnologyZhengzhou 450001China Nebula link Technology Co. Ltd.Beijing 100080China Department of Civil Engineering Tsinghua UniversityBeijing 100084China

Driving safety and accident prevention are attracting increasing global *** safety monitoring systems often face challenges such as limited spatiotemporal coverage and accuracy,leading to delays in alerting drivers about potential *** study explores the use of edge computing for monitoring vehicle motion and issuing accident warnings,such as lane departures and vehicle *** traditional systems that depend on data from single vehicles,the cooperative vehicle-infrastructure system collects data directly from connected and automated vehicles(CAVs)via vehicle-to-everything *** approach facilitates a comprehensive assessment of each vehicle’s *** propose algorithms and specific data structures for evaluating accident risks associated with different ***,we examine the prerequisites for data accuracy and transmission delay to enhance the safety of CAV *** efficacy of this framework is validated through both simulated and real-world road tests,proving its utility in diverse driving conditions.

关键词： driving safety accident prevention connected and automated vehicles edge computing

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Revealing photon transmission in an ultraviolet reactor: Advanced approaches for measuring fluence rate distribution in water for model validation

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Journal of Environmental Sciences 2021年第12期33卷 169-177页

作者： mengkai li Fei Lou Zhe Sun Wentao li James R.Bolton Zhimin Qiang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Civil and Environmental Engineering University of AlbertaEdmontonAB T6G 2W2Canada

Fluence rate(FR) distribution(optical field) is of great significance in the optimal design of ultraviolet(UV) reactors for disinfection or oxidation processes in water treatment. Since the1970 s, various simulation models have been developed, which can be combined with computational fluidic dynamic software to calculate the fluence delivered in a UV reactor. These models strive for experimental validation and further improvement, which is a major challenge for UV technology in water treatment. Herein, a review of the simulation models of the FR distribution in a UV reactor and the applications of the current main experimental measurement approaches including conventional flat-type UV detector, spherical actinometer,and micro-fluorescent silica detector(MFSD), is presented. Moreover, FR distributions in a UV reactor are compared between various simulation models and MFSD *** addition, the main influential factors on the FR distribution, including inner-wall reflection, refraction and shadowing effects of adjacent lamps, and turbidity effect are discussed,which is helpful for improving the accuracy of the simulation models and avoiding dark regions in the reactor design. This paper provides an overview on the simulation models and measurement approaches for the FR distribution, which is helpful for the model selection in fluence calculations and gives high confidence on the optimal design of UV reactors in regard to present methods.

关键词： Fluence rate Water treatment Simulation models Experimental measurement

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