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Chinese Journal of Catalysis 2021年第1期42卷 107-114页

作者： Haotian Xu Rong Xiao jingran huang Yan Jiang Chengxiao Zhao Xiaofei Yang School of Materials Science&Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina College of Science Institute of Materials Physics and ChemistryNanjing Forestry UniversityNanjing 210037JiangsuChina Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025HeilongjiangChina

Converting sustainable solar energy into hydrogen energy over semiconductor-based photocatalytic materials provides an alternative to fossil fuel ***,efficient photocatalytic splitting of water to realize carbon-free hydrogen production remains a *** photocatalysts with well-defined dimensionality and perfectly matched interfaces are promising for achieving highly efficient solar-to-hydrogen ***,we report the fabrication of a novel type of protonated graphitic carbon nitride(PCN)/Ti3C2 MXene heterojunctions with strong interfacial *** expected,the two-dimensional(2D)PCN/2D Ti3C2 MXene interface heterojunction achieves a highly improved hydrogen evolution rate(2181μmol∙g‒1)in comparison with bulk g-C3N4(393μmol∙g‒1)and protonated g-C3N4(816μmol∙g‒1).The charge-regulated surfaces of PCN and the accelerated charge transport at the face-to-face 2D/2D Schottky heterojunction interface are the major contributors to the excellent hydrogen evolution performance of the composite photocatalyst.

关键词： g-C3N4 Ti3C2 Hybridization Schottky heterojunction Protonation Photocatalytic hydrogen production

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中小学阅读建设路径:共生阅读

图书馆论坛 2020年第12期40卷 159-164页

作者：许昌良黄景然广州市华侨外国语学校

文章调查发现中小学生阅读水平与学业成就密切相关,而父母的阅读意识、水准以及家庭环境对学生阅读具有重要影响。基于调研结果和共生理论,提出共生阅读这一中小学阅读建设路径,阐释共生阅读的概念。共生阅读的策略包括:开发阅读课程,... 详细信息

文章调查发现中小学生阅读水平与学业成就密切相关,而父母的阅读意识、水准以及家庭环境对学生阅读具有重要影响。基于调研结果和共生理论,提出共生阅读这一中小学阅读建设路径,阐释共生阅读的概念。共生阅读的策略包括:开发阅读课程,在课程统整中实现共生;有效实施课程,在课程实施中实现共生;建设课程资源,在多元互动中实现共生。

关键词：共生阅读阅读课程阅读水平共生理论

中继OFDMA系统用户公平性的资源分配算法的研究

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电子技术应用 2015年第2期41卷 97-100,105页

作者：黄靖然王芳杨守义郑州大学信息工程学院河南郑州450001

在OFDMA解码—转发中继系统中,为了公平地进行资源分配,提出了在两个用户模型下,在保证每个用户最小速率需求的前提下,先按照用户预定速率比进行子载波分配,再根据实际速率比对用户的子载波进行调整的分配算法,最后使整个系统的吞吐量... 详细信息

在OFDMA解码—转发中继系统中,为了公平地进行资源分配,提出了在两个用户模型下,在保证每个用户最小速率需求的前提下,先按照用户预定速率比进行子载波分配,再根据实际速率比对用户的子载波进行调整的分配算法,最后使整个系统的吞吐量达到最大。提出了三种方案。方案一通过对Lagrange对偶函数问题的求解,根据所得代价函数值的大小对用户的子载波做重新调整。这样不仅考虑到了公平性,也减少了用户的速率损失。方案二、方案三分别从子载波端和用户端出发考虑子载波的分配问题,且从不同的分配角度分析了公平性问题。研究结果表明,三种方案获得的公平性均有所提高。

关键词： OFDMA 中继系统公平性资源分配

Swimming strategy of settling elongated micro-swimmers by reinforcement learning

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Science China(Physics,Mechanics & Astronomy) 2020年第8期63卷 86-94页

作者： jingran Qiu WeiXi huang ChunXiao Xu LiHao Zhao Applied Mechanics Laboratory(AML) Department of Engineering MechanicsTsinghua University100084 BeijingChina

Particular types of plankton in aquatic ecosystems can coordinate their motion depending on the local flow environment to reach regions conducive to their growth or *** their swimming strategies with regard to the local environment is important to obtain in-depth understanding of their behavior in the aquatic *** the present research,to examine an impact of the shape and gravity on a swimming strategy,plankton is considered as settling swimming particles of ellipsoidal *** Q-learning approach is adopted to obtain swimming strategies for smart particles with a goal of efficiently moving upwards in a two-dimensional steady *** obtained from reinforcement learning are compared to those of naive gyrotactic particles that are modeled considering the behavior of realistic *** is found that the elongation of particles improves the performance of upward swimming by facilitating particles’resistance to the perturbation of *** the case when the settling velocity is included,the strategy obtained by reinforcement learning has similar performance to that of the naive gyrotactic one,and they both align swimmers in upward *** similarity between the strategy obtained from machine learning and the biological gyrotactic strategy indicates the relationship between the aspherical shape and settling effect of realistic plankton and their gyrotactic feature.

关键词： swimming particles ellipsoid settling reinforcement learning

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基于VISSIM探究道路通行能力的可行性

信息与电脑 2023年第2期35卷 4-6页

作者：龚栩张永情黄靖然胡恒玮崔素萍西藏大学工学院西藏拉萨850000

VISSIM软件是一个交通仿真软件,其中有一个重要功能为根据输入的车流量仿真出输出的车流量。如果输入的车流量过大,远超道路通行能力,那么输出的车流量能否作为道路通行能力的近似值便是本文研究的主题。首先选取西藏自治区拉萨市江苏... 详细信息

VISSIM软件是一个交通仿真软件,其中有一个重要功能为根据输入的车流量仿真出输出的车流量。如果输入的车流量过大,远超道路通行能力,那么输出的车流量能否作为道路通行能力的近似值便是本文研究的主题。首先选取西藏自治区拉萨市江苏路与藏大西路交叉口作为案例,在VISSIM软件中输入很大的车流量,得到输出的车流量。将输出的车流量与现有的HCM饱和流率模型与韦伯斯特算法的联合运用方法、停车线法的计算结果进行对比,最后发现VISSIM输出的车流量与算法算出的通行能力相近,所以VISSIM可以探究道路的通行能力,但是只能作为参考,并不一定准确。

关键词： VISSIM仿真 HCM饱和流率模型韦伯斯特算法停车线法通行能力

Enhanced hepatic metabolic perturbation of polystyrene nanoplastics by UV irradiation-induced hydroxyl radical generation

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Journal of Environmental Sciences 2024年第8期142卷 259-268页

作者： Shiyu He jingran Wang Lihong Zhou Zhen Mao Xiaodan Zhang Jin Cai Peili huang School of Public Health and Beijing Key Laboratory of Environmental Toxicology Capital Medical UniversityBeijing 100069China

The environmental behavior of and risks associated with nanoplastics(NPs)have attracted considerable ***,compared to pristine NPs,environmental factors such as ultraviolet(UV)irradiation that lead to changes in the toxicity of NPs have rarely been *** evaluated the changes in morphology and physicochemical properties of polystyrene(PS)NPs before and after UV irradiation,and compared their hepatotoxicity in *** results showed that UV irradiation caused particle size reduction and increased the carbonyl index(CI)and negative charge on the particle ***-aged PS NPs(aPS NPs)could induce the generation of hydroxyl radicals(·OH),but also further promoted the generation of·OH in the Fenton reaction *** pathological damage was more severe in mice exposed to aPS NPs,accompanied by a large number of vacuoles and hepatocyte balloon-like changes and more marked perturbations in blood glucose and serum lipoprotein,alanine aminotransferase and aspartate aminotransferase *** addition,exposure to PS NPs and aPS NPs,especially aPS NPs,triggered oxidative stress and significantly damaged the antioxidant capacity of mice *** with PS NPs,exposure to aPS NPs increased the number of altered metabolites in hepatic and corresponding metabolic pathways,especially glutathione *** research suggests that UV irradiation can disrupt the redox balance in organisms by promoting the production of·OH,enhancing PS NPs-induced liver damage and metabolic *** study will help us understand the health risks of NPs and to avoid underestimation of the risks of NPs in nature.

关键词： Polystyrene nanoplastics Ultraviolet-aged nanoplastics Metabolic pathway Metabolomics Hydroxyl radical

Bend family proteins mark chromatin boundaries and synergistically promote early germ cell differentiation

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Protein & Cell 2022年第10期13卷 721-741页

作者： Guang Shi Yaofu Bai Xiya Zhang Junfeng Su Junjie Pang Quanyuan He Pengguihang Zeng Junjun Ding Yuanyan Xiong jingran Zhang Jingwen Wang Dan Liu Wenbin Ma Junjiu huang Zhou Songyang MOE Key Laboratory of Gene Function and Regulation Guangzhou Key Laboratory of Healthy Aging ResearchSchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China Sun Yat-sen Memorial Hospital Sun Yat-sen UniversityGuangzhou 510120China Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhou 510080China Verna and Marrs Mclean Department of Biochemistry and Molecular Biology Baylor College of MedicineOne Baylor PlazaHoustonTX 77030USA Bioland Laboratory Guangzhou 510320China Center for Reproductive Medicine The Third Affiliated Hospital of Sun Yat-sen UniversitySun Yat-sen UniversityGuangzhou 510630China

Understanding the regulatory networks for germ cell fate specification is necessary to developing strategies for improving the efficiency of germ cell production in *** this study,we developed a coupled screening strategy that took advantage of an arrayed bi-molecular fluorescence complementation(BiFC)platform for protein-protein interaction screens and epiblast-like cell(EpiLC)-induction assays using reporter mouse embryonic stem cells(mESCs).Investigation of candidate interaction partners of core human pluripotent factors OCT4,NANOG,KLF4 and SOX2 in EpiLC differentiation assays identified novel primordial germ cell(PGC)-inducing factors including BEN-domain(BEND/Bend)family *** RNA-seq,ChIP-seq,and ATAC-seq analyses,we showed that Bend5 worked together with Bend4 and helped mark chromatin boundaries to promote EpiLC induction in *** findings suggest that BEND/Bend proteins represent a new family of transcriptional modulators and chromatin boundary factors that participate in gene expression regulation during early germline development.

关键词： embryonic stem cell self-renewal and differentiation early development chromatin organization Bend5 and Bend4

Functional principle of the synergistic effect of co-loaded Co-Pi and FeOOH on Fe2O3 photoanodes for photoelectrochemical water oxidation

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Chinese Journal of Catalysis 2020年第11期41卷 1761-1771页

作者： jingran Xiao Longlong Fan Zhongliang huang Jun Zhong Feigang Zhao Kaiji Xu Shu-Feng Zhou Guowu Zhan College of Chemical Engineering Huaqiao UniversityXiamen 361021FujianChina

The establishment of multi-component catalytic systems on Fe2O3 photoanodes presents considerable potential for significantly enhancing the performance of photoelectrochemical water splitting systems. In this study, we hydrothermally synthesized a Fe2O3 photoanode. In addition, d-Fe OOH synthesized via dip-coating and hydrothermally prepared h-FeOOH were used as cocatalysts and their synergistic combinations with cobalt phosphate(Co-Pi) were investigated. The synergy between h-FeOOH and Co-Pi was remarkable, whereas that between d-Fe OOH and Co-Pi was negligible. For example, the onset potentials of the Co-Pi/h-FeOOH and Co-Pi/d-FeOOH dual catalysts, were cathodically shifted by 270 and 170 m V, respectively. Moreover, the photocurrent density of the Co-Pi/h-FeOOH/Fe2O3 anode was significantly higher than that of the Co-Pi/d-FeOOH/Fe2O3 one. The synergistic effect of Co-Pi and h-FeOOH could be attributed to the significantly inhibited recombination of surface charges owing to the formation of a p-n junction between β-FeOOH and Fe2O3 and the large contact area between the granular h-FeOOH and Co-Pi. However, the thin amorphous FeOOH layer of the Co-Pi/d-FeOOH/Fe2O3 anode acted as a hole-transfer medium, and weakly promoted the kinetics of the charge transfer process.

关键词： Fe2O3 Synergistic effect Onset potential Photoanode Water splitting

Efficient Direct C-H Arylation of Heterocycles with Heteroaryl Chlorides Using a Bis(alkoxo) palladium Complex

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Efficient Direct C-H Arylation of Heterocycles with Heteroar...

共同富裕背景下财政支出对慈善组织公益支出的影响——基于我国慈善基金会的证据

第十八届全国金属有机化学学术研讨会

作者： Yabo Li Mengmeng huang jingran Wang Yusheng Wu Yangjie Wu College of Chemistry and Molecular Engineering Henan Key Laboratory of Chemical Biology and Organic ChemistryKey Laboratory of Applied Chemistry of Henan UniversitiesZhengzhou University

As one of significant structural motifs,heterobiaryls has played a pivotal role in biologically active compounds,pharmaceuticals,and organic functional materials. Recently,more and more attention is being paid to the researches of C-H arylation of heteroaryls with aryl chlorides because of their lower cost,lower mass and the wide diversity. In our earlier work,we have determined that the bis(alkoxo)palladium(Ⅱ)complex Cat.I could successfully applied in direct C-H arylation of

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公共管理与政策评论 2024年第4期13卷 153-168页

作者：孙景冉黄楚君中央财经大学财政税务学院北京市财政局

我国慈善组织在新时代共同富裕目标的实现中发挥着不可忽视的作用。本文深入研究了财政支出水平对慈善组织公益支出规模的影响,对理解政府治理与慈善组织公共物品供给的关系、推动发展成果共享具有重要意义。本文选取2009—2018年我国... 详细信息

我国慈善组织在新时代共同富裕目标的实现中发挥着不可忽视的作用。本文深入研究了财政支出水平对慈善组织公益支出规模的影响,对理解政府治理与慈善组织公共物品供给的关系、推动发展成果共享具有重要意义。本文选取2009—2018年我国慈善基金会的年度面板数据,检验了地方政府财政支出对慈善组织慈善支出的逻辑。研究发现:(1)政府支出规模的适度扩张显著促进了基金会公益支出水平的提高,在通过替换变量、处理异常值量等一系列稳健性检验后结果依旧稳健;(2)财政支出对基金会公益事业支出的正向激励作用具有地区异质性,即显著促进了中西部地区慈善事业发展而对东部地区作用不显著;(3)不同募资类型的基金会面对财政支出水平增加的反应有所不同,与非公募基金会相比,公募基金会更倾向于“响应”政府的社会经济发展导向,财政支出的激励作用更强;(4)影响机制检验发现,财政支出通过激励社会慈善捐赠增加基金会捐赠收入,进而对公益支出产生显著的正向效应。

关键词：非营利组织财政支出共同富裕慈善捐赠