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Experimental and Theoretical Studies of C_(3)F_(7)CN/CO_(2) Mixture Decomposition Under Overheating Fault

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 941-951页

作者： mingyue zhao Dong Han Weikang zhao Zhenrui Zhou Guoqiang Zhang Institute of Electrical Engineering Chinese Academy of Sciencesand University of Chinese Academy of SciencesBeijing 100190China

Heptafluoroisobutyrontrile(C_(3)F_(7)CN)performs well in dielectric properties and environmental protection,which has the potential to replace SF6 *** decomposition characteristics of C_(3)F_(7)CN mixture under fault conditions directly affect the possibility of its replacement for SF6 ***,the number of studies on the decomposition characteristics of C_(3)F_(7)CN mixture under overheating fault is *** this paper,the decomposition characteristics of C_(3)F_(7)CN/CO_(2) mixture under an overheating fault are studied by gas chromatography-mass spectrometry(GC/MS)and quantum chemical *** CO,C_(3)F_(6) and HF are detected at 200℃.At 550℃,the C_(3)F_(7)CN molecule begins to decompose and produces CHF_(3),C_(2)F_(4),CF_(3)CN and ***,the results of GC/MS show that the insulation medium C_(3)F_(7)CN contains an impurity,which is C3HF7(HFC-227ea).Combined with the results of GC/MS and quantum chemistry calculations,it can be concluded that the decomposition by-product C_(3)F_(6) at 200℃ mainly comes from the decomposition of C_(3)HF_(7).C_(3)HF_(7) reduces the decomposition temperature of the C_(3)F_(7)CN/CO_(2) ***,it is very important to improve the purity of the insulation medium C_(3)F_(7)CN.

关键词： C3F7CN decomposition mechanism environmentally-friendly gas-insulating medium GC/MS quantum chemical

Study on Graphene Oxide Modified Inorganic Phase Change Materials and Their Packaging Behavior

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Journal of Wuhan University of Technology(Materials Science) 2018年第4期33卷 788-792页

作者：肖力光 zhao mingyue HU Hongliang School of Materials Science and Engineering Jilin Jianzhu UniversityChangchun 130118China

We prepared the nano-inorganic phase-change ＂alloy＂ materials through the modification of Na2SO4·10H2O using Na2HPO4·12H2O and GO nano-nucleating agent, and further investigated their thermophysical properties such as melting/solidification temperatures and enthalpies via differential scanning calorimetry. When the weight ratio of Na2SO4·10H2O and Na2HPO4·12H2O was 8：2 and the weight ratio of graphene oxide was 0.5% of phase change material, the phase change ＂alloy＂ material showed excellent performances, specifically, the melting temperature and latent heat were found to be 22 ℃ and 190 J/g with a degree of subcooling decreased from 8.6℃ to 2.1℃. In order to extend the application of the phase change ＂alloy＂ material to building energy saving field, it was adsorbed on expanded glass beads under vacuum and further covered with diatomite. When the adsorption rate of EGB（volume） and PCAM（weight） was 2.5：1, the particle size of diatomaceous earth was found to be 3.6μm, while the best packaging result was obtained with the melting temperature and latent heat being 21℃ and 135 J/g, and no leakage was observed.

关键词： inorganic PCM GO DE packaging thermophysical properties

Formation Mechanism of Maceral and Mineral Compositions of the“Barkinite”Liptobiolith from the Jinshan Mine,Anhui Province,China

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Acta Geologica Sinica(English Edition) 2010年第3期84卷 643-653页

作者： SUN Yuzhuang zhao Cunliang LIN mingyue JIN Kankun DING Shuli Key Laboratory of Resource Exploration Research of Hebei Province Hebei University of Engineering Handan Hebei 056038 China

In order to study the accumulation mechanism of＂barkinite＂,eight Late Permian channel benches（approximately 15-cm across and 10-cm deep） were taken from the Jinshan Mine,Anhui Province,*** samples were analyzed by microscopical and geochemical *** microscopical observations indicate that the occurrence modes of＂barkinite＂in this area are different from those in other areas of *** ratios of structureless＂barkinite＂are much higher in the Jinshan Mine,probably due to the flow-water and marine influenced ***, vitrinite macerals also show a strong *** vitrinite fluorescence characteristics have not been observed in the Permian＂barkinite＂coals from northern *** composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.

关键词： macerai "barkinite" liptobiolith vitrinite mineralogy Permian coal Jinshan Mine China

Ultrasensitive determination of mercury by solution anode glow discharge atomic emission spectrometry coupled with hydride generation

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Chinese Chemical Letters 2020年第10期31卷 2814-2818页

作者： Mingli Yuan Xiaoxu Peng Fen Ge mingyue zhao Qing Li Zheng Wang Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Material Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China

An innovative method for the ultrasensitive detection of mercury by solution anode glow discharge atomic emission spectroscopy(SAGD-AES) coupled with hydride generation(HG) was first *** this method,the mercury vapor generated by the HG was transmitted to the SAGD through the miniature hollow tungsten tube for excitation and detected by a miniaturized spectrograph.A thorough parametric evaluation of the HG and SAGD system was performed,including the type and concentration of ca rrier acid,He flow rate,concentrations of NaBH4,discha rge current and discharge *** optimal operating conditions,the detection limit for Hg^(2+) achieved 0.03 μg/L,with a relative standard deviation of 1.1% at the Hg^(2+) concentration of 5 μg/***,the correlation coefficient of the calibration curve was 0.9996 in the range between 0.1 and 10 μg/*** accuracy and practicability of HG-SAGD-AES were verified by measuring GBW09101 b(human hair),GBW10029(fish),soil and rice *** results showed good agreement with the certified values and values from direct mercury analyzer(DMA).

关键词： Solution anode glow discharge Hydride generation Atomic emission spectroscopy Mercury

Are SDGs suitable for China's sustainable development assessment? An application and amendment of the SDGs Indicators in China

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Chinese Journal of Population,Resources and Environment 2019年第1期17卷 25-38页

作者： Jing Zhu Xinzhang Sun Zheng He mingyue zhao College of Economics Northeastern University at Qinhuangdao Qinhuangdao China The Administrative Centre for China's Agenda 21 Beijing China Woods Institute for the Environ merit Stanford Un iversity Stan ford CA USA

In order to further ensure that the 2030 Agenda for Sustainable Development is to be implemented and the action measures of all countries are consistent, the United Nations has put forward a set of indicators to monitor and evaluate the progress of global sustainable development. This set of evaluation indicators is aimed for global and regional progress. An important feature of the evaluation indicators is that they are internationally comparable, but due to the large differences in the levels of sustainable development among countries, this framework of evaluation indicators has a disadvantage that it does not apply to tracking the progress of sustainable development at the national level. This paper focuses on the analysis of specific issues in the application of the global sustainable development indicators framework to meet the goals and targets of the UN and builds a system of evaluation indicators to assess the progress of sustainable development at the national level in China, and offers a perspective to assess China’s progress as well.

关键词： The 2030 Agenda for sustainable development sustainable development goals (SDGs) global indicator framework for the SDGs evaluation index system

Assessment of two faecal sludge treatment plants in urban areas:Case study in Beijing

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 237-245页

作者： Cheng Shikun Zheng Lei zhao mingyue Bai Xue Li Zifu Heinz-Peter Mang Department of Environmental Engineering Beijing Key Laboratory of Resource-oriented Treatment of Industrial PollutantsUniversity of Science and Technology BeijingBeijing 100083China Beijing Municipal Environmental Monitoring Center Beijing 100048China

Every day,human beings produce excreta all over the world,and the sludge that accumulates in waste disposal systems is referred to as the‘faecal sludge(FS)’.FS can cause serious environmental pollution in urban areas if it cannot be disposed of properly.A complete FS management system must include onsite sanitation technologies,FS collection and transport,a treatment plant,and resource recovery or disposal of the treatment *** on the treatment and reuse/disposal step of a FS complete service chain,this research presents two cases of FS treatment in *** Case 1,FS biogas plant adopts anaerobic digestion(AD)to treat FS,and the digestate can be used as biofertilizer in the surrounding *** Case 2,several technologies including solid-liquid separation,dewatering,pyrolysis,AD and co-composting are integrated to find innovative solutions for FS treatment.A comprehensive assessment including the aspects of technology,economy and environment is conducted for further SWOT(Strengths,Weaknesses,Opportunities and Threats)***,critical strategies are developed,which include(1)selecting project site for optimized transportation,maximum waste reuse,minimum environmental impact and convenient final effluent disposal;(2)planning technical options at a feasible study stage,considering resource recovery,secondary pollution prevention and fire protection;(3)exploring market channels for by-products sale to increase profitability;(4)guaranteeing engineering quality and service life for the purpose of sustainable operation;(5)minimizing health risks to persons exposed to the untreated FS;and(6)providing necessary training for hygiene *** cases in Beijing can provide valuable lessons for urban areas in developing countries and the strategies can provide a reference for stakeholders and decision-makers who intend to develop FS treatment projects.

关键词： faecal sludge kitchen waste composting anaerobic digestion SWOT

Amplification of early drought responses caused by volatile cues emitted from neighboring tea plants

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Horticulture Research 2021年第1期8卷 3337-3348页

作者： Jieyang Jin mingyue zhao Ting Gao Tingting Jing Na Zhang Jingming Wang Xianchen Zhang Jin Huang Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural University230036 HefeiAnhuiP.R.China Biotechnology Institute Chengdu Newsun Crop Science Co.Ltd610212 ChengduP.R.China Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.185354 FreisingGermany

Plants have developed sophisticated mechanisms to survive in dynamic *** can communicate via volatile organic compounds(VOCs)to warn neighboring plants of *** most cases,VOCs act as positive regulators of plant ***,the communication and role of volatiles in response to drought stress are poorly ***,we showed that tea plants release numerous *** them,methyl salicylate(MeSA),benzyl alcohol,and phenethyl alcohol markedly increased under drought ***,further experiments revealed that drought-induced MeSA lowered the abscisic acid(ABA)content in neighboring plants by reducing 9-cis-epoxycarotenoid dioxygenase(NCED)gene expression,resulting in inhibition of stomatal closure and ultimately decreasing early drought tolerance in neighboring *** application of ABA reduced the wilting of tea plants caused by MeSA *** of Nicotiana benthamiana to MeSA also led to severe wilting,indicating that the ability of drought-induced MeSA to reduce early drought tolerance in neighboring plants may be conserved in other plant *** together,these results provide evidence that drought-induced volatiles can reduce early drought tolerance in neighboring plants and lay a novel theoretical foundation for optimizing plant density and spacing.

关键词： drought neighboring volatile

Volatile compound-mediated plant-plant interactions under stress with the tea plant as a model

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Horticulture Research 2023年第9期10卷 281-292页

作者： Jieyang Jin mingyue zhao Tingting Jing Mengting Zhang Mengqian Lu Guomeng Yu Jingming Wang Danyang Guo Yuting Pan Timothy D.Hoffmann Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural University230036HefeiAnhuiChina Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.185354 FreisingGermany

Plants respond to environmental stimuli via the release of volatile organic compounds(VOCs),and neighboring plants constantly monitor and respond to these VOCs with great sensitivity and *** sensing can trigger increased plant fitness and reduce future plant damage through the priming of their own *** defense mechanism in neighboring plants can either be induced by activation of the regulatory or transcriptional machinery,or it can be delayed by the absorption and storage of VOCs for the generation of an appropriate response *** much research,many key questions remain on the role of VOCs in interplant communication and plant *** we review recent research on the VOCs induced by biotic(*** and pathogens)and abiotic(***,drought,and salt)stresses,and elucidate the biosynthesis of stress-induced VOCs in tea *** focus is on the role of stress-induced VOCs in complex ecological ***,the roles of VOCs under abiotic stress are ***,we discuss pertinent questions and future research directions for advancing our understanding of plant interactions via VOCs.

关键词： stress drought compound

Cold Stress-induced Glucosyltransferase CsUGT78A15 is Involved in the Formation of Eugenol Glucoside in Camellia sinensis

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Horticultural Plant Journal 2020年第6期6卷 439-449页

作者： mingyue zhao Binbin Cai Jieyang Jin Na Zhang Tingting Jing Jingming Wang Yuting Pan Zixiang Zhou Yifan zhao Yingying Feng Feng Yu Mengting Zhang Yating Li Zhonghua Liu Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei 230036China Key Laboratory of Tea Science of Ministry of Education National Research Center of Engineering Technology for Utilization of Functional Ingredients from BotanicalsCollege of HorticultureHunan Agricultural UniversityChangsha 410128China

Eugenol is a natural phenolic compound known for its health-promoting properties and its ability to add a floral scent to tea *** eugenol glycosides have been identified and shown to make important contributions to fruit floral ***,the details of their biosynthesis and metabolism in tea plants are still ***,eugenol glucoside was unambiguously identified as a native metabolite in the tea plant,and its biosynthesis was shown to be induced by low temperature *** the analysis of UGTs induced by low temperature,the glycosyltransferase CsUGT78A15 was identified in tea,and its encoded protein was shown to catalyze the glucosylation of ***/Km ratios showed that eugenol was the most suitable substrate for *** donor preference analysis showed that CsUGT78A15 had a higher selectivity for glucose,followed by galactose and glucuronic *** expression of CsUGT78A15was correlatedwith the accumulation of eugenol glucoside in different tissues and genotypes of ***-regulation of CsUGT78A15 led to a decreased eugenol glucoside content under cold stress,indicating that CsUGT78A15 plays an important role in the biosynthesis of eugenol glucoside under cold *** identification of eugenol glucoside in the tea plant and the discovery of a cold stress-induced eugenol glucosyltransferase in tea provide the foundation for the improvement of tea flavor under cold stress and the biotechnological production of eugenol glucoside.

关键词： Camellia sinensis Eugenol Glucosyltransferase Cold stress