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Ir(CO)Cl_a(Ph_2Ppy)_2HgCl_b(HgCl_2)_c(a,b=1,2;c=0,1)的Ir-Hg相互作用和氧化还原反应性质(英文)

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物理化学学报 2009年第7期25卷 1362-1366页

作者：黄小璇许旋华南师范大学化学与环境学院广东高校电化学储能与发电技术重点实验室广州510006

应用密度泛函理论(DFT)的PBE0方法,金属原子采用SDD基组,H、C、O和N原子采用6-31G*基组,P和Cl原子采用6-311G*基组,对单核配合物Ir(CO)Cl(Ph2Ppy)2(1),双核配合物Ir(CO)(Cl)2(Ph2Ppy)2HgCl(2)、Ir(CO)Cl(Ph2Ppy)2HgCl2(3)和Ir(CO)(Cl)2(HgCl2)(Ph2Ppy)2HgCl(4)进行结构优化,并在优化的基础上采用基组重叠误差(BSSE)校正计算相互作用能,通过自然键轨道(NBO)和前线轨道分析研究Ir-Hg相互作用和氧化还原反应的实质.通过计算发现,Ir(CO)Cl(Ph2Ppy)2与HgCl2发生氧化还原反应得到的产物2和4比非氧化还原产物3稳定.Ir-Hg相互作用强度顺序为3<4<2,且随着Ir-Hg相互作用强度增大,HOMO轨道中Ir和Hg成分逐渐趋于接近.配合物2和4都具有一对Ir-Hg成键与反键轨道,其成键轨道的组成分别为0.5985sd0.06Hg+0.8012sd2.48Ir和0.5794sd0.05Hg+0.8151sd2.48Ir,但3中Ir与Hg的相互作用较弱,只存在弱相互作用(电荷转移作用),表现为nIr→nHg的直接作用和σIr—P(1)→nHg、σIr—C(1)→nHg的间接作用.

关键词： DFT NBO 金属-金属相互作用氧化还原性质稳定性

Increased excitatory amino acid transporter 2 levels in basolateral amygdala astrocytes mediate chronic stress–induced anxiety-like behavior

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Neural Regeneration Research 2025年第6期20卷 1721-1734页

作者： Xirong Xu Shoumin xuan Shuai Chen Dan Liu Qian xiao Jie Tu Shenzhen Key Laboratory of Neuroimmunomodulation for Neurological Diseases Shenzhen-Hong Kong Institute of Brain ScienceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina CAS Key Laboratory of Brain Connectome and Manipulation Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Brain Connectome and Behavior the Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina University of Chinese of Academy of Sciences BeijingChina Faculty of Life and Health Sciences Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

The conventional perception of astrocytes as mere supportive cells within the brain has recently been called into question by empirical evidence, which has revealed their active involvement in regulating brain function and encoding behaviors associated with ***, astrocytes in the basolateral amygdala have been found to play a role in the modulation of anxiety-like behaviors triggered by chronic stress. Nevertheless, the precise molecular mechanisms by which basolateral amygdala astrocytes regulate chronic stress–induced anxiety-like behaviors remain to be fully elucidated. In this study, we found that in a mouse model of anxiety triggered by unpredictable chronic mild stress, the expression of excitatory amino acid transporter 2 was upregulated in the basolateral amygdala. Interestingly, our findings indicate that the targeted knockdown of excitatory amino acid transporter 2 specifically within the basolateral amygdala astrocytes was able to rescue the anxiety-like behavior in mice subjected to stress. Furthermore, we found that the overexpression of excitatory amino acid transporter 2 in the basolateral amygdala, whether achieved through intracranial administration of excitatory amino acid transporter 2agonists or through injection of excitatory amino acid transporter 2-overexpressing viruses with GfaABC1D promoters, evoked anxiety-like behavior in mice. Our single-nucleus RNA sequencing analysis further confirmed that chronic stress induced an upregulation of excitatory amino acid transporter 2 specifically in astrocytes in the basolateral amygdala. Moreover, through in vivo calcium signal recordings, we found that the frequency of calcium activity in the basolateral amygdala of mice subjected to chronic stress was higher compared with normal *** knocking down the expression of excitatory amino acid transporter 2 in the basolateral amygdala, the frequency of calcium activity was not significantly increased, and anxiety-like behavior was ob

关键词： anxiety astrocytes basolateral amygdala behavior dihydrokainic acid excitatory amino acid transporter 2 fiber photometry glutamate LDN-212320 transporter

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当代俄罗斯女性电影的创作图景

艺术百家 2021年第3期37卷 180-187页

作者：黄小轩陈方中国人民大学文学院北京100872 中国人民大学外国语学院北京100872

在当代俄罗斯电影蓬勃多元的发展态势中,“女性电影新浪潮”的异军突起尤为引人关注。作为知性浪漫的代表和纪实美学的引领者,女性导演以其敏锐深刻的艺术洞察力影响着当代电影的发展进程。尤其是近几年来,女性电影人创作的团体性、开... 详细信息

在当代俄罗斯电影蓬勃多元的发展态势中,“女性电影新浪潮”的异军突起尤为引人关注。作为知性浪漫的代表和纪实美学的引领者,女性导演以其敏锐深刻的艺术洞察力影响着当代电影的发展进程。尤其是近几年来,女性电影人创作的团体性、开放性和互助性成为俄罗斯影坛的一种现象。在女性群体意识的语境下,俄罗斯女性电影重启了对典型社会问题的当代反思,呈现出对“人”的深刻关怀。

关键词：当代俄罗斯电影女性电影女性意识浪漫性纪实性

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青岛近海方氏云鳚繁殖生物学的初步研究

中国海洋大学学报（自然科学版） 2010年第8期40卷 55-59页

作者：黄晓璇曾晓起张驰中国海洋大学水产学院山东青岛266003

通过对2008年3月-2008年12月在青岛近海捕获的方氏云鳚样品进行的测定分析,初步研究了其繁殖生物学特征,结果表明：其性成熟系数每年只在11月形成1个峰值。绝对怀卵量变动于330-4 273粒之间,平均1 496粒;相对怀卵量变动于47-186粒/g（... 详细信息

通过对2008年3月-2008年12月在青岛近海捕获的方氏云鳚样品进行的测定分析,初步研究了其繁殖生物学特征,结果表明：其性成熟系数每年只在11月形成1个峰值。绝对怀卵量变动于330-4 273粒之间,平均1 496粒;相对怀卵量变动于47-186粒/g（纯质量）,平均127粒/g（纯质量）。绝对怀卵量与纯质量的关系为E=185.65W-599.38,与体长的关系为E=0.002 9L5.035。最小成熟个体,雌鱼体长为11.2 cm,纯质量为5.94 g;雄鱼体长为11.4 cm,纯质量为6.14 g。产卵盛期为11月。

关键词：青岛近海方氏云鳚繁殖生物学性成熟系数怀卵量

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu Wang xiao Ding huang Yunyi Yiyu Liu Jia Li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

[Fe(CO)_3(MePhPpy)_2(MCl_2)](M=Zn,Cd,Hg)的Fe-M相互作用及其对^(31)P化学位移影响的研究

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华南师范大学学报（自然科学版） 2008年第4期40卷 74-80页

作者：黄小璇许旋华南师范大学化学与环境学院／广东高校电化学储能与发电技术重点实验室广东广州510631

应用密度泛函DFT理论PBE0方法对单核配合物[Fe(CO)3(MePhPpy)2]1、双核配合物[Fe(CO)3(MePhPpy)2(MCl2)](2∶M=Zn,3∶M=Cd,4∶M=Hg)和[Fe(CO)3(MePhPpy)2(HgCl2)2]5的结构进行了理论计算,研究了双核配合物中金属-金属间相互作用及其对31P化学位移的影响.结果表明:(1)配合物2～4的稳定性为2>4>3.(2)Fe-M相互作用的强弱顺序为2≈3<4.(3)NBO分析得到Fe-M相互作用主要表现为σFe-P→nM和σFe-C→nM的电荷转移作用,而N-M的相互作用以nN→nM离域作用为主.(4)用DFT-PBE0-GIAO方法计算1,3,5的31P化学位移值与实验值较接近,并预测了2和4的31P化学位移分别为61.66和56.49.(5)形成双核配合物后,σFe-C→σF*e-P离域增大,而σFe-P→σF*e-C减小,使得P原子核所受的屏蔽作用比1的大,故双核配合物的31P化学位移比单核配合物的小.

关键词： DFT(PBE0) GIAO 金属一金属相互作用 31P NMR

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广州市共享单车发展中的协同治理研究

价值工程 2018年第19期37卷 39-40页

作者：黄晓璇广州科技贸易职业学院广州511442

近年来,广州共享单车以其绿色环保、轻便高效的出行模式在很大程度上解决城市出行从"站台到目的地最后一公里"的难题的同时也出现了无序投放、基础设施不完善、用户体验不佳等问题。本文通过介绍广州共享单车的发展现状,阐述其问题和成... 详细信息

近年来,广州共享单车以其绿色环保、轻便高效的出行模式在很大程度上解决城市出行从"站台到目的地最后一公里"的难题的同时也出现了无序投放、基础设施不完善、用户体验不佳等问题。本文通过介绍广州共享单车的发展现状,阐述其问题和成因,对如何规范广州共享单车的发展提出了协同治理对策。

关键词：共享单车协同治理发展

Synergistically enhanced ORR and HER performance on Co-N-C coupled in-situ generated PtCo intermetallic

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Journal of Energy Chemistry 2025年第1期100卷 721-729页

作者： Guanyu Luo Min Song Lulu An xiao huang Qian Zhang Chenhao Zhang Tao Shen Shuang Wang Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of Co atomic sites and in-situ generated PtCo intermetallic compounds （IMCs）(o-PtCo@CoNC) is proposed through Co pre-anchoring and subsequent impregnation-reduction *** loading of Co atoms provides a chance for in-situ generating PtCo ordered intermetallic *** remaining Co single atoms and PtCo IMCs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt Co IMCs and Co single atoms,o-PtCo@CoNC exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-PtCo@CoNC delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMCs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Synergistic effect Intermetallics Single atomic sites Oxygen reduction reaction Hydrogen evolution reaction

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： xiao Liang Xingping Quan xiaorui Geng Yujing huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging