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High-performance solar-blind photodetector arrays constructed from Sn-doped Ga_(2)O_(3)microwires via patterned electrodes

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Nano Research 2022年第8期15卷 7631-7638页

作者： Ya-Cong Lu Zhen-Feng Zhang Xun Yang Gao-Hang He Chao-Nan Lin Xue-Xia Chen Jin-Hao ZangWen-Bo Zhao Yan-Cheng Chen Lei-Lei Zhang Yi-Zhe Li Chong-Xin Shan Henan Key Laboratory of Diamond Optoelectronic Material and Devices Key Laboratory of Material physicsMinistry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China Vacuum Interconnected Nanotech workstation(Nano-X) Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China

Ga_(2)O_(3)has been regarded as a promising material for solar-blind detection due to its ultrawide bandgap and low growth *** semiconductor microwires(MWs)possess unique optical and electronic characteristics,the performances of photodetectors developed from Ga_(2)O_(3)MWs are still less than ***,we demonstrate high-performance solar-blind photodetectors based on Sn-doped Ga_(2)O_(3)MWs,possessing a light/dark current ratio of 107 and a responsivity of 2,409 A/W at 40 ***,a 1×10 solar-blind photodetector linear array is developed based on the Sn-doped Ga_(2)O_(3)MWs via a patternedelectrodes *** clear solar-blind images are obtained by using the photodetector array as the imaging unit of a solarblind imaging *** results provide a convenient way to construct high-performance solar-blind photodetector arrays based on Ga_(2)O_(3)MWs,and thus may push forward their future applications.

关键词： Sn-doped Ga_(2)O_(3) microwires photodetector linear array solar-blind imaging

Controllable synthesized step-scheme heterojunction of WO_(3)/CuBi_(2)O_(4) decorated WO_(3) plates for visible-light-driven CO_(2) reduction

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Nano Research 2022年第7期15卷 5962-5969页

作者： Weina Shi Ji-Chao Wang Xiaowei Guo Xiu Qiao Fang Liu Renlong Li Wanqing Zhang Yuxia Hou Huijuan Han School of Chemistry and Materials Engineering Xinxiang UniversityXinxiang 453000China College of Chemistry and Chemical Engineering Henan Institute of Science and TechnologyXinxiang 453000China Henan Photoelectrocatalytic Material and Micro-Nano Application Technology Academician workstation Xinxiang UniversityXinxiang 450003China College of Chemistry Zhengzhou UniversityZhengzhou 450000China

Rational design and construction of step-scheme(S-scheme)photocatalyst has received much attention in the field of CO_(2) reduction because of its great potential to solve the current energy and environmental *** this study,a series of plate-like WO_(3)/CuBi_(2)O_(4)(WO/CBO)photocatalysts were *** CO and CH4 yields over optimal composite reached 1,115.8 and 67.2μmol/m2 after 9 h visible light illumination(λ>400 nm),which was higher than those of two pure catalysts in CO_(2) *** product yields slightly decreased in the 7th ***,the staggered band structure of heterojunction was characterized by diffuse reflectance spectroscopy(DRS)and valence band-X-ray photoelectron spectroscopy(VB-XPS),and a S-scheme charge transfer mechanism was verified by detecting electron spin resonance(ESR)and XPS result about surface composition of WO/CBO catalyst in dark or *** work may be useful for rational designing of S-scheme photocatalyst and provides some illuminating insights into the S-scheme transfer mechanism.

关键词： CO_(2)reduction WO_(3)plate CuBi_(2)O_(4) step-scheme(S-scheme) photocatalyst

Seepage simulation of high concrete-faced rockfill dams based on generalized equivalent continuum model

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Water Science and Engineering 2018年第3期11卷 250-257页

作者： Shou-kai Chen Qi-dong He Ji-gang Cao School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou 450045China Henan Key Laboratory of Water Environment Simulation and Treatment North China University of Water Resources and Electric PowerZhengzhou 450045China Academician workstation of Water Environment Governance and Ecological Restoration Zhengzhou 450002China Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering North China University of Water Resources and Electric PowerZhengzhou 450045China

This research focused on the three-dimensional(3 D) seepage field simulation of a high concrete-faced rockfill dam(CFRD) under complex hydraulic conditions. A generalized equivalent continuum model of fractured rock mass was used for equivalent continuous seepage field analysis based on the improved node virtual flow method. Using a high CFRD as an example, the generalized equivalent continuum range was determined, and a finite element model was established based on the terrain and geological conditions, as well as structural face characteristics of the dam area. The equivalent seepage coefficients of different material zones or positions in the dam foundation were calculated with the Snow model or inverse analysis. Then, the 3 D seepage field in the dam area was calculated under the normal water storage conditions, and the corresponding water head distribution, seepage flow, seepage gradient, and seepage characteristics in the dam area were analyzed. The results show that the generalized equivalent continuum model can effectively simulate overall seepage patterns of the CFRD under complex hydraulic conditions and provide a reference for seepage analysis of similar CFRDs.

关键词： Concrete-faced rockfill dam(CFRD) Generalized equivalent continuum model Node virtual flow method Fractured rock mass Seepage field Seepage coefficient

ZmCYP90D1 regulates maize internode development by modulating brassinosteroid-mediated cell division and growth

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The Crop Journal 2024年第1期12卷 58-67页

作者： Canran Sun Yang Liu Guofang Li Yanle Chen Mengyuan Li Ruihua Yang Yongtian Qin Yongqiang Chen Jinpeng Cheng Jihua Tang Zhiyuan Fu Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy Henan Agricultural UniversityZhengzhou 450046HenanChina The Shennong Laboratory Zhengzhou 450002HenanChina Hebi Academy of Agricultural Sciences Hebi 458030HenanChina Yunnan Tang Jihua Expert workstation/Zhaotong Academy of Agricultural Sciences Zhaotong 657000YunnanChina

Plant height(PH)is associated with lodging resistance and planting density,which is regulated by a complicated gene *** this study,we identified a spontaneous dwarfing mutation in maize,m30,with decreased internode number and length but increased internode diameter.A candidate gene,ZmCYP90D1,which encodes a member of the cytochrome P450 family,was isolated by map-based ***90D1 was constitutively expressed and showed highest expression in basal internodes,and its protein was targeted to the nucleus.A G-to-A substitution was identified to be the causal mutation,which resulted in a truncated protein in *** of function of ZmCYP90D1 changed expression of hormoneresponsive genes,in particular brassinosteroid(BR)-responsive genes which is mainly involved in cell cycle regulation and cell wall extension and modification in *** concentration of typhasterol(TY),a downstream intermediate of ZmCYP90D1 in the BR pathway,was reduced.A haplotype conferring dwarfing without reducing yield was ***90D1 was inferred to influence plant height and stalk diameter via hormone-mediated cell division and cell growth via the BR pathway.

关键词： Maize ZmCYP90D1 BR biosynthesis Dwarf plant

A peptide chain release factor 2a gene regulates maize kernel development by modulating mitochondrial function

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The Crop Journal 2023年第6期11卷 1731-1741页

作者： Hui Zhang Yijian Feng Kunyang Song Guofang Li Jiao Jin Jingjing Gao Yongtian Qin Hongqiu Wang Jinpeng Cheng Zonghua Liu Jihua Tang Zhiyuan Fu Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy Henan Agricultural UniversityZhengzhou 450046HenanChina The Shennong Laboratory Zhengzhou 450002HenanChina Hebi Academy of Agricultural Sciences Hebi 458030HenanChina Yunnan Tang Jihua Expert workstation/Zhaotong Academy of Agricultural Sciences Zhaotong 657000YunnanChina

Mitochondrial protein translation that is essential for aerobic energy production includes four essential steps of the mitochondrial ribosome cycle,namely,initiation,elongation,termination of the polypeptide,and ribosome *** termination initiates when a stop codon enters the A site of the mitochondrial ribosome where it is recognized by a dedicated peptide release factor(RF).However,RFs and mechanisms involved in translation in plant mitochondria,especially in monocotyledons,remain largely ***,we identified a crumpled kernel(crk5 allele)mutant,with significantly decreased kernel size,100-kernel weight,and an embryo-lethal *** Crk5 allele was isolated using map-based cloning and found to encode a mitochondrial localization *** it is an ortholog of Arabidopsis mitochondrial RF2a,we named the gene ***2a is missing the 5th–7th exons in the crk5 resulting in deletion of domains containing motifs GGQ and SPF that are essential for release activity of RF,mitochondrial ribosome binding,and stop codon *** blot and qRT-PCR analyses indicate that the crk5 mutation results in abnormal mitochondrion structure and ***,we observed a feedback loop in the crk5 with up-regulated transcript levels detected for several mitochondrial ribosome and mitochondrial-related components,in particular mitochondrial complexes CI,CIV,and a ribosome assembly related ***,our data support a crucial role for ZmmtRF2a in regulation of mitochondrial structure and function in maize.

关键词： Embryo lethality Mitochondrion Peptide release factor 2 Zea mays

KMnO4-mediated direct selective radical cross-coupling：An effective strategy for C2 arylation of quinoline N-oxide with arylboronic acids

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Chinese Chemical Letters 2017年第5期28卷 981-985页

作者： Jin-Wei Yuan Ling-Bo Qu School of Chemistry & Chemical Engineering Henan University of TechnologyAcademician Workstation for Natural Medicinal Chemistry of Henan Province

Direct C—H functionalization of quinoline N-oxides with arylboronic acids is achieved using KMnOas the sole and efficient oxidative *** method provides an efficient protocol to construct regioselectively 2-arylquinol... 详细信息

关键词： Quinoline N-oxide Arylboronic acid KMnO_4-mediated Radical reaction Arylation

A Symmetric Key Exchange Protocol Bsaed on Virtual S-Box

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China Communications 2014年第A02期11卷 46-52页

作者： YIN Yifeng GAN Yong WEN Heyu LI Tianbao School of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China

Based on the theory of polymorphic virtual S-box, the paper presents a symmetric key exchange protocol to solve the problem of session keys delete shared in the computational complexity temporary trading scenario. Both parties jointly construct a highly nonlinear SPN core algorithm. The paper the connotation of polymorphic cipher theory, making use of the method of self-compiler based expansion factor to collect random parameter sets held by each of the parties containing its own information 5-tuple private keys array Kpa[5] and Kpb[5].The more efficient polymorphism virtual S-box is constructed. The method of secret split for the public key cryptography features can be implemented by symmetry cipher system. The research results will provide a theoretical basis to solve the key exchange problems for short- term communications partner based on symmetric cryptography.

关键词： virtual S-box the virtual iterativefunction (VIF) secrecy sub-systems

Role of grain boundary character on Bi segregation-induced embrittlement in ultrahigh-purity copper

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Journal of Materials Science & Technology 2023年第28期159卷 52-61页

作者： Y.X.Hua K.X.Song H.T.Liu J.W.Wang C.M.Zhang Y.J.Zhou B.Pang J.T.Song J.L.He H.L.Zhao School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China Henan Academy of Sciences Zhengzhou 450000China Henan Key Laboratory of Advanced Conductor Materials Zhengzhou 450046China Provincial and Ministerial Co-construction of Collaborative Innovation Center of Nonferrous New Materials and Advanced Processing Technology Luoyang 471023China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Bismuth(Bi),as an impurity element in copper and copper-based alloys,usually has a strong tendency of grain boundary(GB)segregation,which depends on the GB ***,the influence of such a segregation on the properties of ultrahigh-purity copper has been rarely reported and the exact structural arrangements of Bi atoms at different GBs remain largely *** this study,we investigated the influ-ence of trace amounts of Bi(50-300 wt ppm)on the ductility of an ultrahigh-purity copper(99.99999%)in the range of room temperature to 900°*** tensile results show that the addition of Bi seriously damages the ductility of the ultrahigh-purity copper at temperatures of 450-900°C,which is due to the GB segregation of *** this basis,such a segregation behavior at different types of GBs,including high and low angle GBs(HAGBs/LAGBs),and twin boundaries(TBs),via the scanning electron microscope-electron backscattered diffraction(SEM-EBSD)and aberration-corrected scanning transmission electron microscope(AC-STEM)investigations,combined with the first-principles calculations were systematically *** atomistic characterizations demonstrate an anisotropic Bi segregation,where severe enrich-ment of Bi atoms typically occurs at the HAGBs,while the absence of Bi adsorption prevails at LAGBs or *** particular,the segregated Bi at random HAGBs exhibited the directional bilayer adsorption,while the special symmetrical7 HAGB presented a unique Bi-rich cluster *** findings pro-vide a comprehensive experimental and computational understanding on the atomic-scale segregation of impurities in metallic materials.

关键词： Grain boundary character Embrittlement Bi segregation Atomic configuration Ultrahigh-purity copper

Corrosion resistance of tannic acid,d-limonene and nano-ZrO_(2)modified epoxy coatings in acid corrosion environments

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Journal of Materials Science & Technology 2021年第6期65卷 137-150页

作者： Junwei Chang Zhenyu W ang En-hou Han Xinlei Liang Gang Wang Zuyao Yi Na Li School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Huadian zhengzhou Mechanical Design Institute Co. Ltd.Zhengzhou450000China

The protection of rusted carbon steel in acid corrosion environments is of great significance for equipment to keep safe *** this work,we presented a method to protect the rusted steel by ru st conversion treatment and epoxy *** acid was selected as rust conversion *** acid,D-limonene and nano-ZrO_(2)were used to improve the corrosion resistance of epoxy *** Raman spectra,Xray diffraction and 3 D confocal images were used to characterize the rust conversion *** hesion test showed that the loss of wet adhesion of the optimal coating was relatively low due to the addition of tannic acid,limonene and nano-ZrO(2).The corrosion resistance of five different coatings was investigated by scanning electron microscopy(SEM)and electrochemical *** show that after 264 h acid immersion,the low frequency resistance of the optimal coating consisting of rust conversion treatment and additives is 10^(7)Ωcm^(2),three orders magnitude higher than that of the pristine ***,SEM indicates that the optimal coating possesses a smooth surface and an unbroken interface between substrate and ***,the corrosion-resistant mechanism of the hybrid coating is proposed.

关键词： Epoxy coatings Corrosion resistance Rust treatment Tannic acid Synergistic inhibition effect