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Chinese Journal of Chemistry 2023年第15期41卷 1829-1835页

作者： Wenbo Yuan weiyang hu Jian Wang Mengyuan Zhu Changsheng Shi Ning Sun Youtian Tao Key Lab for Flexible Electronics&Institute of Advanced Materials(IAM) Nanjing Tech University30 South Puzhu RoadNanjingJiangsu 211816China Department of Physics Center for Optoelectronics Engineering ResearchYunnan UniversityKunmingYunnan 65091China

Comprehensive Summary Conjugated fused-ring structures have attracted extensive attention due to their high molecular rigidity to restrain excited-state relaxation and non-radiative decay,and further to enhance the luminance efficiency for emissive ***,we develop a series of donor-acceptor type thermally activated delayed fluorescence(TADF)emitters by introducing fused-ring 5H-benzofuro[3,2-c]carbazole(32BFCz)as electron donating *** optimizing the numbers and structure of donor and acceptor moieties,three compounds named 32BFCzA,mCF3BFCzOXD and dCF3BFCzOXD are designed,which are composed by mono-32BFCz/trifluoromethylpicolinonitrile,penta-BFCz/3-(trifluoromethyl)phenyl)-1,3,4-oxadiazol-2-yl)benzene and penta-32BFCz/3,5-bis(trifluoromethyl)phenyl)-1,3,4-oxadiazol-2-yl)benzene as donor/acceptor groups,respectively.

关键词： Donor-acceptor Dipole moment Thermally activated delayed fluorescence Organic light-emitting diodes External quantum efficiency

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新媒体下播音主持的创新发展

传媒论坛 2021年第11期4卷 15-16页

作者：胡未央温州广播电视传媒集团浙江温州325000

在新媒体这个大环境下,对播音主持来说,机遇与挑战是并存的。在播音主持作品不断丰富的同时也对播音主持提出了更高的要求。为符合时代背景、受大众喜爱,播音主持工作也需要不断地探索,探析新的发展路径,以此适应社会的新变化。本文从... 详细信息

在新媒体这个大环境下,对播音主持来说,机遇与挑战是并存的。在播音主持作品不断丰富的同时也对播音主持提出了更高的要求。为符合时代背景、受大众喜爱,播音主持工作也需要不断地探索,探析新的发展路径,以此适应社会的新变化。本文从新媒体环境下播音主持的现状与特点进行分析,并提出相应的创新发展策略。

关键词：新媒体播音主持创新发展

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基于混合算法的需求响应公交灵活调度模型

华南理工大学学报（自然科学版） 2021年第1期49卷 123-133页

作者：靳文舟胡为洋邓嘉怡罗晨伟韦兰辉华南理工大学土木与交通学院广东广州510640 广州市交通规划研究院广东广州510230

需求响应公交(DRT)是一种新型的公共交通服务模式,为了使DRT理论能更贴合实际应用于低密度人口地区,提出了考虑多种车型和多种运营模式的公交灵活调度方式。首先设立车型和路径的双决策变量,并构建了考虑多种车型和多种运营模式的公交... 详细信息

需求响应公交(DRT)是一种新型的公共交通服务模式,为了使DRT理论能更贴合实际应用于低密度人口地区,提出了考虑多种车型和多种运营模式的公交灵活调度方式。首先设立车型和路径的双决策变量,并构建了考虑多种车型和多种运营模式的公交灵活调度模型;然后采用大循环小循环混合模式设计了混合遗传蚁群算法HGACO,该算法混合了最近邻搜索算法、2-opt法、目的地降维算子、遗传算法和蚁群算法;最后以揭西南部部分地区至城中心的3个时段为例进行调度。结果显示:考虑多种车型和多种运营模式的公交灵活调度模型具有经济性和可操作性,该模型可以使低密度地区的需求响应调度更加科学和经济;改进的混合遗传蚁群算法HGACO的求解能力、精度和稳定性均优于原算法,可以稳定地求得DRT灵活调度问题的较优解。

关键词：需求响应公交灵活调度多车型多种运营模式混合遗传算法混合遗传-蚁群算法

江苏省工业源动态排放清单建立及排放控制效益研究

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环境科学学报 2023年第10期43卷 256-266页

作者：李千雨赵文鑫胡未央张洁张妍赵瑜南京大学环境学院污染控制与资源化研究国家重点实验室南京210023 江苏省环境工程技术有限公司南京210019

工业是我国大气污染物的主要排放源.现有工业源大气污染物排放清单尚未充分反映排放快速变化的特征和不同部门之间的差异,其行业、时间分辨率和准确性有待进一步提升.本文以工业经济发达省份江苏为例,基于污染源连续在线监测(CEMS)数据... 详细信息

工业是我国大气污染物的主要排放源.现有工业源大气污染物排放清单尚未充分反映排放快速变化的特征和不同部门之间的差异,其行业、时间分辨率和准确性有待进一步提升.本文以工业经济发达省份江苏为例,基于污染源连续在线监测(CEMS)数据、环境统计等资料,建立2015—2020年工业源以日为单位的大气颗粒物(PM)、SO_(2)和NO_(x)动态排放清单;结合WRF-CMAO空气质量模式评估非电行业超低排放改造带来的大气环境改善效益;选取典型时段量化重污染天气应急措施下的减排量及其对空气质量的影响.结果表明:2015—2020年工业源细颗粒物(PM_(2.5))、可吸入颗粒物(PM10)、SO_(2)和NO_(x)年排放量分别下降35.7%、34.9%、66.2%和67.0%,2015—2017年排放变化主要受电力行业影响,2018—2019年钢铁行业对排放时间变化特征起主导作用;在钢铁、水泥行业达到超低排放限值和所有非电行业达到超低排放限值两种情景下,2017年典型月份PM_(2.5)浓度将分别下降4.34%~8.29%和8.99%~14.92%,最大8 h臭氧(MDA8 O_(3))浓度分别上升0.08%~4.31%和-0.64%~7.61%;在2019年两个典型重污染天气应急减排时段,应急减排措施导致PM_(2.5)浓度分别下降1.68和1.29μg·m^(-3),而O_(3)浓度在大部分时间有所上升.研究证明了基于CEMS信息的动态排放清单能够较好反映污染防治成效,并证实应从挥发性有机物(VOC)和NO_(x)协同控制角度改善O_(3)污染状况.

关键词：动态排放清单在线监测超低排放减排成效重污染天气应急

Significant changes in the physicochemical properties of BC-containing particles during the cold season in Beijing

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Journal of Environmental Sciences 2025年第5期151卷 667-676页

作者： Shuya hu Linghan Zeng Gang Zhao Shiyi Chen Chunsheng Zhao Weilun Zhao Min hu State Key Joint Laboratory of Environmental Simulation and Pollution Control International Joint Research Center for Atmospheric Research(IJRC)College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and TechnologyNanjing 210044China

The ambient air quality has improved significantly under strict emission controls in Beijing,China over the last *** carbon(BC),as a short-lived climate forcer in ambient aerosols,profoundly impacts the air quality and *** studies have demonstrated a decline in the mass concentration of *** this study,we characterized the chemical compositions and size distributions of BC-containing particles during the cold season of 2022 in Beijing using state-of-the-art instruments capable of exclusively measuring BCcontaining *** optical properties of BC-containing particles were further calculated based on the Mie ***,we compared the properties of BC-containing particles in 2022 with the results of previous *** results showed that the diameters of BC cores became larger while the coating thickness of BC-containing particles became thinner in *** the coating materials,the mass fraction of nitrate increased obviously,and even replaced organic matter as the dominant component during the peak of the pollution *** in chemical compositions and size distributions resulted in lower mass absorption cross-sections(MAC)of BC-containing particles from 10.5±1.1 m^(2)/g in 2016 to 7.3±0.8 m^(2)/g in 2022,reduced by 30.5%.Our results demonstrate the synergistic benefits of air pollution control in improving air quality and mitigating climate ***,the MAC of BC adopted in climate models should vary with the changing air pollution *** study emphasizes that it is imperative to conduct long-term observations of BC-containing particles to better estimate BC’s climate effects.

关键词： Black carbon Chemical composition Size distribution Light absorption ability

Degradation of carbamazepine by the UVA-LED_(365)/ClO_(2)/NaClO process:Kinetics,mechanisms and DBPs yield

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Journal of Environmental Sciences 2025年第2期148卷 399-408页

作者： Chenyan hu Yihui Wu Zhengyu Dong Ziyi Dong Shengjie Ji Lili hu Xinyu Yang Hao Liu College of Environmental and Chemical Engineering Shanghai Engineering Research Center of EnergySaving in Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

A mixed oxidant of chlorine dioxide(ClO_(2))and NaClO was often used in water treatment.A novel UVA-LED(_(365) nm)-activated mixed ClO_(2)/NaClO process was proposed for the degradation of micropollutants in this ***(CBZ)was selected as the target *** with the UVA_(365)/ClO_(2) process,the UVA_(365)/ClO_(2)/NaClO process can improve the degradation of CBZ,with the rate constant increasing from 2.11×10^(−4) sec^(−1) to 2.74×10^(−4) sec^(−1).In addition,the consumption of oxidants in the UVA_(365)/ClO_(2)/NaClO process(73.67%)can also be lower than that of UVA_(365)/NaClO(86.42%).When the NaClO ratio increased,both the degradation efficiency of CBZ and the consumption of oxidants can increase in the UVA_(365)/ClO_(2)/NaClO *** solution pH can affect the contribution of NaClO in the total oxidant *** the pH range of 6.0-8.0,the combination process can generate more active species to promote the degradation of *** change of active species with oxidant molar ratio was investigated in the UVA_(365)/ClO_(2)/NaClO *** ClO_(2) acted as the main oxidant,HO·and Cl·were the main active species,while when NaClO was the main oxidant,ClO·played a role in the *** chloride ion(Cl^(-)),bicarbonate ion(HCO_(3)^(-)),and nitrate ion(NO_(3)^(-))can promote the reaction *** the concentration of NaClO in the reaction solution increased,the generation of chlorates will *** UVA_(365)/ClO_(2)/NaClO process can effectively control the formation of volatile disinfection by-products(DBPs),and with the increase of ClO_(2) dosage,the formation of DBPs can also decrease.

关键词： UVA Chlorine dioxide(ClO_(2)) NaClO Carbamazepine(CBZ) Disinfection by-products

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现代有轨电车与公交线网分层规划优化研究

河南科学 2019年第11期37卷 1806-1811页

作者：胡为洋靳文舟华南理工大学土木与交通学院

结合现代有轨电车与常规公交的分层规划做出阐述,通过现代有轨电车与常规公交的不同服务特性来建立不同目标的模型,其中现代有轨电车可以承担较大运量,比较适合作为交通干线.因此以直达客流量最大为最优化目标,常规公交可采用了总成本... 详细信息

结合现代有轨电车与常规公交的分层规划做出阐述,通过现代有轨电车与常规公交的不同服务特性来建立不同目标的模型,其中现代有轨电车可以承担较大运量,比较适合作为交通干线.因此以直达客流量最大为最优化目标,常规公交可采用了总成本较低的目标函数.在寻求线网模型解时,考虑到现实路网的复杂性和以后模型的适用性,采用了收敛较好的蚁群算法,对交通系统网络进行了优化布设.建立了一个微型路网来模拟对交通系统网络进行了优化布设,借助Matlab软件编程求解,来验证改进的蚁群算法计算的有效性.结合需求导向的规划思维同时考虑实际路线长度和交通小区OD量比对,线路是可行且最优的.最后在结合线路调整思路,增减和调整线路,得到微型路网下的现代有轨电车和公交规划图.该方法具有一定的实操性和合理性,可对线网规划提供一定的参考.

关键词：现代有轨电车需求导向分层交通线网优化

Nitrogen-cycling processes under long-term compound heavy metal(loids)pressure around a gold mine:Stimulation of nitrite reduction

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Journal of Environmental Sciences 2025年第1期147卷 571-581页

作者： Xuesong hu Xiaoxia Liu Shuo Zhang Caihong Yu School of Chemical&Environmental Engineering China University of Mining and Technology(Beijing)Beijing 100083China Beijing Cultivated Land Construction and Protection Center Beijing 100020China

Mining and tailings deposition can cause serious heavy metal(loids)pollution to the surrounding soil *** microorganisms adapt their metabolism to such conditions,driving alterations in soil *** study aims to elucidate the response patterns of nitrogen-cycling microorganisms under long-term heavy metal(loids)*** results showed that the diversity and abundance of nitrogen-cyclingmicroorganisms showed negative feedback to heavy metal(loids)*** microorganisms were shown to be the dominant microorganisms with over 60%of relative abundance and a complex community structure including 27 ***,the key bacterial species in the denitrification process were calculated using a random forest model,where the top three key species(Pseudomonas stutzei,Sphingobium japonicum and Leifsonia rubra)were found to play a prominent role in nitrite *** gene analysis and qPCR revealed that nirK,which is involved in nitrite reduction,significantly accumulated in the most metal-rich soil with the increase of absolute abundance of 63.86%.The experimental results confirmed that the activity of nitrite reductase(Nir)encoded by nirK in the soil was increased at high concentrations of heavy metal(loids).Partial least squares-path model identified three potential modes of nitrite reduction processes being stimulated by heavy metal(loids),the most prominent of which contributed to enhanced nirK abundance and soil Nir activity through positive stimulation of key *** results provide new insights and preliminary evidence on the stimulation of nitrite reduction processes by heavy metal(loids).

关键词： N cycle Nitrite reduction Nitrite reductase Metagenome Key species

Effect of Nb-V microalloying on the hot deformation behavior of medium Mn steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 360-368页

作者： Yumeng Wang Qinyi Guo Bin hu Haiwen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of Nb-V microalloying on the hot deformation behavior and microstructures of medium Mn steel(MMS)was investigated by uniaxial hot compression *** establishing the constitutive equations for simulating the measured flow curves,we successfully constructed deformation activation energy(Q)maps and processing maps for identifying the region of flow *** concluded the following consequences of Nb-V alloying for MMS.(i)The critical strain increases and the increment diminishes with the increasing deformation temperature,suggesting that NbC precipitates more efficiently retard dynamic recrystallization(DRX)in MMS compared with solute Nb.(ii)The deformation activation energy of MMS is significantly increased and even higher than that of some reported high Mn steels,suggesting that its ability to retard DRX is greater than that of the high Mn content.(iii)The hot workability of MMS is improved by narrowing the hot processing window for the unstable flow stress,in which fine recrystallized and coarse unrecrystallized grains are present.

关键词： medium manganese steel niobium-vanadium microalloying flow behavior dynamic recrystallization hot workability

Development of a net ozone production rate detection system based on dual-channel cavity ring-down spectroscopy

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Journal of Environmental Sciences 2025年第3期149卷 419-430页

作者： Jinzhao Tong Renzhi hu Changjin hu Xiaoyan Liu Haotian Cai Chuan Lin Liujun Zhong JiaweiWang Pinhua Xie School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China Anhui Institute of Optics and Fine Mechanics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China School of Pharmacy Anhui Medical UniversityHefei 230032China

A novel system for measuring net photochemical ozone production rates in the atmosphere based on cavity ring-down spectroscopy(OPR-CRDS)was *** system consists of two chambers(a reaction chamber and a reference chamber)and a dual-channel O_(x)-CRDS *** minimize the wall loss of O_(x)in the chambers,the inner surfaces of both chambers are coated with Teflon *** performance of the OPR-CRDS system was *** was found that even though the photolysis frequency(J value)decreased by 10%,the decrease in the P(O_(3))caused by the ultraviolet-blocking film coating was less than 3%.The two chambers had a good consistency in the mean residence time and the measurement of NO_(2)and O_(x)under the condition of no *** detection limit of the OPR-CRDS was determined to be 0.20 ppbv/*** further verify the accuracy of the system,the direct measurement values of the OPR-CRDS systemwere comparedwith the calculation results based on radical(OH,HO_(2),and RO_(2))reactions,and a good correlation was obtained between the measured and calculated ***,the developed instrument was applied to obtain the comprehensive field observations at an urban site in the Yangtze River Delta(China)for 40 days,the time series and change characteristics of the P(O_(3))were obtained directly,and the good environmental adaptability and stability of the OPR-CRDS system were *** is expected that the new instrument will be beneficial to investigations of the relationship between P(O_(3))and its precursors.

关键词： Ozone Net photochemical production rate CRDS Atmospheric chemistry