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Piezoelectric nanofoams with the interlaced ultrathin graphene confining Zn–N–C dipoles for efficient piezocatalytic H_(2) evolution under low-frequency vibration

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Journal of Energy Chemistry 2022年第6期31卷 115-122,I0004页

作者： Penghui Hu Yan Xu Yanhua Lei Jie Yuan Rui Lei Rong Hu Junkang Chen Difa Xu Shiying Zhang Ping Liu Xiangchao Zhang xiaoqing qiu Wenhui Feng These authors contributed equally to this work.a.Hunan Province Key Laboratory of Applied Environmental Photocatalysis Changsha UniversityChangsha 410022HunanChina College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350116FujianChina Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Application Department of Chemistry and Life ScienceXiangnan UniversityChenzhou 423000HunanChina

Unique nanofoams consisting of interweaved ultrathin graphene confining Zn–N–C dipoles (ZnNG) are constructed via calcination of Zn-coordinated precursor.Due to the introduction of local polar Zn–N–C configurations,with hypersensitivity for mechanical stress,the piezoelectricity is created on the nonpiezoelectric graphene,and the hierarchical ZnNG exhibits obvious piezocatalytic activity of water splitting for H_(2) production even under mild agitation.The corresponding rate of H_(2) production is about 14.65 μmol g^(-1)h^(-1).It triggers a breakthrough in piezocatalytic H_(2) evolution under low-frequency vibration,and takes a significant step forward for piezocatalysis towards practical applications.Furthermore,the presented concept of confining atomic polar configuration for engineering piezoelectricity would open up new horizon for constructing new-type piezoelectrics based on both piezoelectric and nonpiezoelectric materials.

关键词： Piezocatalysis Water splitting for H_(2)production Low-frequency vibration Ultrathin graphene confining Zn–N–C dipoles

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Solution evaporation processed high quality perovskite films

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Science Bulletin 2018年第23期63卷 1591-1596页

作者： Aqiang Liu Kang Liu Huimin Zhou Hongmei Li xiaoqing qiu Yang Yi Min Liu School of Physics and Electronics and Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Institute of Super-microstructure and Ultrafast Process in Advanced Materials School of Physics and Electronics Central South University School of Chemistry and Chemical Engineering Central South University State Key Laboratory of Powder Metallurgy Central South University

Organic-inorganic hybrid perovskite solar cells(PSCs), due to their high power conversion efficiency(PCE) and low cost, have been considered as one of the most promising photovoltaic devices. Welldistributed large-grain perovskite crystals play an important role for light adsorption and charge transfer.While, high quality perovskite crystals closely relate to the preparation method. Generally, the preparation of perovskite films requires a nitrogen atmosphere and toxic anti-solvents, which hinder their practical applications. Here, we reported a novel and simple solution evaporation process followed with a methylammonium iodide(MAI) solution immersion to prepare high quality perovskite films. Porous lead iodide(PbI_2) films were firstly formed by evaporation of PbI_2 precursor solution. The obtained porous PbI_2 films were completely transformed into well-distributed large-grain perovskite films after a quick MAI solution immersion. As a result, the corresponding PCE was enhanced by 30% compared to that prepared with a regular sequential deposition. This solution evaporation method provides a convenient and practical way for preparing high-quality perovskite films.

关键词： Perovskite Solution evaporation High-quality films Power conversion efficiency

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Study on bending properties of recombinant bamboo and glued bamboo

Study on bending properties of recombinant bamboo and glued ...

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第三届材料科学应用与能源材料国际研讨会

作者： Zhipeng Yang Yifan Hu xiaoqing qiu Jiangsu University of Science and Technology

Reorganized bamboo is a kind of bamboo composite material that reorganizes and reinforces bamboo. The glued bamboo is a composite material of bamboo fiber and phenolic glue with specific fiber arrangement and special processing. In this paper, the three-point bending test of reconstituted bamboo and glued bamboo was carried out, and the load-span deflection curve was obtained. The ultimate bearing capacity, flexural strength and elastic modulus were studied. The results show that the flexural strength of the recombinant bamboo is greater than that of the glued bamboo. However, the ductility of glued bamboo is better than that of recombinant bamboo.

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电压依赖性离子通道可改造成为一种对抗耐药菌的新型抗生素

电压依赖性离子通道可改造成为一种对抗耐药菌的新型抗生素

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第一届国际暨第十三次中国生物物理学术大会

作者： xiaoqing qiu Lab.of Biomembrane＆Membrane Protein West China Hospital Sichuan University

＜正＞大肠菌素是大肠杆菌分泌的一种外毒素,可在同种异株的大肠杆菌细胞膜上形成电压依赖性离子通道,造成细菌泄露死亡。由于大肠菌素易于改造,可在人工脂质双分子膜上形成标准的离子通道模型,自1980年代以来,一直是研究离子通道门控...

＜正＞大肠菌素是大肠杆菌分泌的一种外毒素,可在同种异株的大肠杆菌细胞膜上形成电压依赖性离子通道,造成细菌泄露死亡。由于大肠菌素易于改造,可在人工脂质双分子膜上形成标准的离子通道模型,自1980年代以来,一直是研究离子通道门控特性的一个经典模式。获诺贝尔奖后的第二年（1946）,青霉素之父Flory即发现大肠菌素抗菌效力极强、可在体

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Mixed-decomposed convolutional network:A lightweight yet efficient convolutional neural network for ocular disease recognition

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CAAI Transactions on Intelligence Technology 2024年第2期9卷 319-332页

作者： xiaoqing Zhang Xiao Wu Zunjie Xiao Lingxi Hu Zhongxi qiu Qingyang Sun Risa Higashita Jiang Liu Research Institute of Trustworthy Autonomous Systems and Department of Computer Science and Engineering Southern University of Science and TechnologyShenzhenChina Tomey Corporation NagoyaJapan Guangdong Provincial Key Laboratory of Brain‐inspired Intelligent Computation Department of Computer Science and EngineeringSouthern University of Science and TechnologyShenzhenChina Singapore Eye Research Institute SingaporeSingapore

Eye health has become a global health concern and attracted broad attention.Over the years,researchers have proposed many state-of-the-art convolutional neural networks(CNNs)to assist ophthalmologists in diagnosing ocular diseases efficiently and precisely.However,most existing methods were dedicated to constructing sophisticated CNNs,inevitably ignoring the trade-off between performance and model complexity.To alleviate this paradox,this paper proposes a lightweight yet efficient network architecture,mixeddecomposed convolutional network(MDNet),to recognise ocular diseases.In MDNet,we introduce a novel mixed-decomposed depthwise convolution method,which takes advantage of depthwise convolution and depthwise dilated convolution operations to capture low-resolution and high-resolution patterns by using fewer computations and fewer parameters.We conduct extensive experiments on the clinical anterior segment optical coherence tomography(AS-OCT),LAG,University of California San Diego,and CIFAR-100 datasets.The results show our MDNet achieves a better trade-off between the performance and model complexity than efficient CNNs including MobileNets and MixNets.Specifically,our MDNet outperforms MobileNets by 2.5%of accuracy by using 22%fewer parameters and 30%fewer computations on the AS-OCT dataset.

关键词： artificial intelligence deep learning deep neural networks image analysis image classification medical applications medical image processing

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自然万物的叙事力——论瑞克·巴斯的复魅叙事

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当代外国文学 2023年第3期44卷 27-34页

作者：邱小轻广东外语外贸大学

瑞克·巴斯频繁讲述人在荒野体验到的神奇。其实巴斯并非魔幻现实主义作家,神奇也不仅指向自然的野性,它直指自然万物的强大叙事力。本文首先理清物质生态批评核心概念“物质叙事力”的内涵,继而指出巴斯对自然万物的叙事力的阐发,并认... 详细信息

瑞克·巴斯频繁讲述人在荒野体验到的神奇。其实巴斯并非魔幻现实主义作家,神奇也不仅指向自然的野性,它直指自然万物的强大叙事力。本文首先理清物质生态批评核心概念“物质叙事力”的内涵,继而指出巴斯对自然万物的叙事力的阐发,并认为他在荒野亲历的神奇事件以及小说人物迷魅于自然万物的语言、惊叹于动物的理解力与跨越广阔空间的感知力等,均展示了自然的表述行为和重新使人魅惑的主体性。这些复魅叙事凸显人对物之生命力的重新感知和物质与话语的密不可分,表明叙事是人与物共同创建,呼应了物质生态批评赋予叙事的本体论意义,激发我们在实践活动中的伦理反思。

关键词：瑞克·巴斯自然万物神奇物质叙事力复魅

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Contents of soil organic carbon and nitrogen in water-stable aggregates in abandoned agricultural lands in an arid ecosystem of Northwest China

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Journal of Arid Land 2016年第3期8卷 350-363页

作者： WANG Junqiang LIU Lichao qiu xiaoqing WEI Yujie LI Yanrong SHI Zhiguo Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Gansu Academy of Agricultural Engineering and Technology Wuwei 733006 China Gansu Polytechnic College of Animal Husbandry & Engineering Wuwei 733006 China

Soil organic matter content in water-stable aggregates（WSA） in the arid ecosystems（abandoned agricultural lands especially） of China is poorly understood. In this study, we examined the WSA sizes and stability, and soil organic carbon（OC） and nitrogen（N） contents in agricultural lands with abandonment ages of 0, 3, 12, 20, 30 and 40 years, respectively, in the Minqin Oasis of Northwest China. The total soil OC and N contents at depths of 0–20, 20–40 and 40–60 cm in abandoned agricultural lands were compared to those in cultivated land（the control）. Agricultural land abandonment significantly（P0.25 mm） as the age of agricultural land abandonment increased. The effect of abandonment ages of agricultural lands on MWD was determined by the changes of OC and N accumulation in WSA sizes ＆gt;2 mm. The total OC and N contents presented a stratification phenomenon across soil depths in this arid ecosystem. That is, both of them decreased significantly at depths of 0–20 and 40–60 cm while increased at the depth of 20–40 cm. The WSA sizes ＆lt;0.053 mm had the highest soil OC and N contents（accounting for 51.41%–55.59% and 42.61%–48.94% of their total, respectively）. Soil OC and N contents in microaggregates（sizes 0.053–0.25 mm） were the dominant factors that influenced the variations of total OC and N contents in abandoned agricultural lands. The results of this study suggested that agricultural land abandonment may result in the recovery of WSA stability and the shifting of soil organic matter from the silt＋clay（＆lt;0.053 mm） and microaggregate fractions to the macroaggregate fractions. However, agricultural land abandonment did not increase total soil OC and N contents in the short-term.

关键词： aggregate stability water-stable aggregates agricultural abandonment soil organic carbon total nitrogen northwestern China

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基于社会网络的城市疫情空间扩散及治理研究——以深圳新冠肺炎病例为依据

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世界地理研究 2022年第3期31卷 637-648页

作者：李文辉邱晓晴华南师范大学经济与管理学院广州510006 华南师范大学地理科学学院广州510006 华南师范大学科技创新与区域发展研究中心广州510006

以深圳市卫生健康委员会发布的新冠肺炎确诊病例数据信息为依据,借助数据挖掘方法、空间分析方法和社会网络分析方法,对城市疫情空间扩散特征及治理对策进行了分析。研究表明(:1)从流行病学基本特征来看,疫情确诊病例人群结构复杂,来源... 详细信息

以深圳市卫生健康委员会发布的新冠肺炎确诊病例数据信息为依据,借助数据挖掘方法、空间分析方法和社会网络分析方法,对城市疫情空间扩散特征及治理对策进行了分析。研究表明(:1)从流行病学基本特征来看,疫情确诊病例人群结构复杂,来源地较广,延续时间较长,被传染病例发病滞后周期复杂。(2)从家庭内部及夫妻之间传播网络来看,疫情扩散具有强烈的空间聚集性特征。(3)从重点疫区和非疫区传播网络来看,疫情扩散具有明显的空间流动性特征。(4)从社交活动传播网络来看,疫情空间扩散具有私密性和不确定性特征。(5)从境外疫情空间蔓延的传播网络来看,疫情扩散具有国际性和不可抗拒性特征。(6)在城市管理中,应该优化城市空间效能,利用现代通信网络技术提高治理时效性和柔韧性。

关键词：非疫区城市疫情空间扩散社会网络新冠肺炎深圳

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Transcription factor EHF interacting with coactivator AJUBA aggravates malignancy and acts as a therapeutic target for gastroesophageal adenocarcinoma

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2119-2136页

作者： Li Peng Yanyi Jiang Hengxing Chen Yongqiang Wang qiusheng Lan Shuiqin Chen Zhanwang Huang Jingyuan Zhang Duanqing Tian Yuntan qiu Diankui Cai Jiangyun Peng Daning Lu xiaoqing Yuan Xianzhu Yang Dong Yin Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Guangdong-Hong Kong Joint Laboratory for RNA MedicineSun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China Medical Research Center Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China Hefei Institutes of Physical Science Chinese Academy of SciencesHefei 230031China Department of Gastrointestinal Surgery Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China Department of Hepatobiliary Surgery Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China School of Biomedical Sciences and Engineering South China University of TechnologyGuangzhou International CampusGuangzhou 511442China

Transcriptional dysregulation of genes is a hallmark of tumors and can serve as targets for cancer drug development.However,it is extremely challenging to develop small-molecule inhibitors to target abnormally expressed transcription factors(TFs)except for the nuclear receptor family of TFs.Little is known about the interaction between TFs and transcription cofactors in gastroesophageal adenocarcinoma(GEA)or the therapeutic effects of targeting TF and transcription cofactor complexes.In this study,we found that ETS homologous factor(EHF)expression is promoted by a core transcriptional regulatory circuitry(CRC),specifically ELF3-KLF5-GATA6,and interference with its expression suppressed the malignant biological behavior of GEA cells.Importantly,we identified Ajuba LIM protein(AJUBA)as a new coactivator of EHF that cooperatively orchestrates transcriptional network activity in GEA.Furthermore,we identified KRAS signaling as a common pathway downstream of EHF and AJUBA.Applicably,dual targeting of EHF and AJUBA by lipid nanoparticles cooperatively attenuated the malignant biological behaviors of GEA in vitro and in vivo.In conclusion,EHF is upregulated by the CRC and promotes GEA malignancy by interacting with AJUBA through the KRAS pathway.Targeting of both EHF and its coactivator AJUBA through lipid nanoparticles is a novel potential therapeutic strategy.

关键词： EHF AJUBA KRAS pathway Enhancer Core transcriptional regulatory circuitry Gastroesophageal adenocarcinoma Gastric adenocarcinoma Esophageal adenocarcinoma Transcription factor Coactivator Lipid nanoparticles

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倾听荒野:《天空,群星,荒野》中人与自然万物的内在互动

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广东外语外贸大学学报 2022年第3期33卷 45-53,158页

作者：邱小轻广东外语外贸大学英语语言文化学院

瑞克·巴斯的中篇《天空,群星,荒野》充满各种自然声响,人与物深受彼此影响,而非人物单方面受到影响。此外,记住动植物的名字和特性是人物和自然交流的一个重要途径。本文运用爱布拉姆的语言观以及巴拉德的内在互动论,结合巴斯的非虚构... 详细信息

瑞克·巴斯的中篇《天空,群星,荒野》充满各种自然声响,人与物深受彼此影响,而非人物单方面受到影响。此外,记住动植物的名字和特性是人物和自然交流的一个重要途径。本文运用爱布拉姆的语言观以及巴拉德的内在互动论,结合巴斯的非虚构叙事,解读安妮一家与自然万物的内在互动以及内在互动的意义。安妮及家人不断倾听和观察荒野,由此感知到荒野的神奇以及安妮已逝母亲的存在,巴斯借此强调感知力是人类了解自然的重要途径。此外,外祖父通过模仿众鸟鸣叫而重获言说能力,印证了爱布拉姆关于人与物共享一种由身体直接感知语言的观点。人与荒野的万物内在互动使双方均不断发生变化,荒野虽具有强大复原力,但也遭受严重人为破坏。安妮的母亲早逝以及荒野的不断缩小,凸显了失去所造成的深远影响,也体现了巴斯对荒野的深切关注与深重忧虑。

关键词：《天空群星荒野》感知力内在互动荒野

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