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On-chip integrated GeSe_(2)/Si vdW heterojunction for ultravioletenhanced broadband photodetection,imaging,and secure optical communication

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Nano Research 2024年第7期17卷 6544-6549页

作者： zhiman zhou Kunxuan Liu Di Wu Yunrui Jiang Ranran Zhuo Pei Lin Zhifeng Shi Yongtao Tian Wei Han Longhui Zeng Xinjian Li School of Physics and Microelectronics Key Laboratory of Material Physics Ministry of EducationZhengzhou UniversityZhengzhou 450052China Department of Electrical and Computer Engineering University of California San DiegoLa JollaCalifornia 92093USA Institute of Microelectronics and Integrated Circuits School of MicroelectronicsHubei UniversityWuhan 430062China

Broadband photodetection,spanning from ultraviolet(UV)to infrared(IR),is pivotal in diverse technological domains including astronomy,remote sensing,environmental monitoring,and medical ***,current commercially available broadband photodetectors,predominately based on conventional narrow-bandgap semiconductors,exhibit limited sensitivity in the UV *** limitation,stemming from the significant energy disparity between the semiconductor bandgap and UV photon,narrows their application ***,we report an innovative approach involving the in-situ van der Waals(vdW)integration of two-dimensional(2D)GeSe_(2)layers onto a Si *** process yields a high-quality GeSe_(2)/Si vdW heterojunction device,which features a broad response range covering from UV to near-IR(NIR)with a greatly-enhanced sensitivity in the UV *** device possesses high responsivities of 325 and 533.4 mA/W,large detectivities of 1.24×10^(13)and 2.57×10^(13)Jones,and fast response speeds of 20.6/82.1 and 17.7/81.0μs under 360 and 980 nm,***,the broadband image sensing and secure invisible optical communication capabilities of the GeSe_(2)/Si heterojunction device are *** work provides a viable approach for UV-enhanced broadband photodetection technology,opening up new possibilities and applications across various scientific and technological domains.

关键词： germanium diselenide van der Waals(vdW)integration ultraviolet enhanced broadband photodetection imaging

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谢章铤简谱

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中国韵文学刊 2006年第4期20卷 110-114页

作者：袁志成周治满中山大学中文系广东广州510275 颜公中学湖南隆回422211

谢章铤是近世闽中著名文学家,其生平交游甚广,对晚清八闽文坛有着重要的影响。本文试以简谱的形式将谢章铤的生平做一勾勒,以期对谢章铤的思想性情、文学贡献等有更清楚的认识。

关键词：谢章铤生平简谱

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195份大蒜种质资源在南方地区的农艺性状综合评价

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中国蔬菜 2022年第7期 69-77页

作者：何巧芸周智满曾铮袁晓戈周建军王延周刘头明中国农业科学院麻类研究所湖南长沙410205 茶陵县农业农村局湖南株洲412400

为筛选出适宜南方地区生长种植、外观优良且高产的大蒜资源,本试验以195份国内外大蒜种质资源为材料,系统调查了大蒜11个农艺数量性状在湖南长沙的表型,并进行了遗传多样性分析、相关性分析、主成分分析和聚类分析综合评价。结果表明:19... 详细信息

为筛选出适宜南方地区生长种植、外观优良且高产的大蒜资源,本试验以195份国内外大蒜种质资源为材料,系统调查了大蒜11个农艺数量性状在湖南长沙的表型,并进行了遗传多样性分析、相关性分析、主成分分析和聚类分析综合评价。结果表明:195份大蒜种质资源在南方地区表现出丰富的遗传多样性,变异系数分布范围为15.94%~45.87%,其中单头鳞茎质量在大蒜资源中变异程度最大。相关性分析结果表明:11个数量性状之间几乎都存在极显著或显著相关关系,其中与鳞茎性状具有相关性的植株农艺性状为株高、叶长、单株叶片数、地上假茎高和地上假茎粗,且都呈极显著正相关;主成分分析中前2个主成分的累计贡献率达到65.96%,包含的要素信息量可以基本反映11个数量性状的主要信息;通过聚类分析,195份国内外大蒜种质资源可分为4个类群,第Ⅰ类群和第Ⅳ类群的性状指标均较为优异,初步筛选出适宜南方地区生长的优质资源13份,为南方地区大蒜种质资源鉴定评价和优质新品种选育提供了参考。

关键词：大蒜种质资源南方地区农艺性状聚类分析评价

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大蒜全基因组NCED基因鉴定与功能初探

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中国蔬菜 2023年第3期 47-56页

作者：袁晓戈李富张雪钰曾铮何巧芸周智满王延周杨喜爱刘头明中国农业科学院麻类研究所湖南长沙410205

采用生物信息学方法,从大蒜基因组中共鉴定出AsaNCED基因14个,预测其氨基酸数量为409~599个,蛋白分子量为46421.95~67090.27 Da,理论等电点为5.48~6.87。多数基因外显子数为1个,少数为11~12个。在启动子顺式作用元件中,光、脱落酸和茉... 详细信息

采用生物信息学方法,从大蒜基因组中共鉴定出AsaNCED基因14个,预测其氨基酸数量为409~599个,蛋白分子量为46421.95~67090.27 Da,理论等电点为5.48~6.87。多数基因外显子数为1个,少数为11~12个。在启动子顺式作用元件中,光、脱落酸和茉莉酸甲酯响应元件在数量上占据优势,并广泛分布在不同的基因家族成员中;同时也存在与干旱相关的MYB结合位点、防御与胁迫响应元件、伤口响应元件和种子特异性调控元件。该基因家族成员在不同组织中具有一定的表达差异性。通过异源过表达AsaNCED4获得转基因拟南芥,其株高明显低于野生型,qRT-PCR分析发现AsaNCED4基因受盐胁迫诱导上调表达。

关键词：大蒜 NCED基因差异表达基因功能

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Enrichment of thermophilic and mesophilic microbial consortia for efficient degradation of corn stalk

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Journal of Environmental Sciences 2019年第4期31卷 118-126页

作者： Jun Lu zhiman Yang Wanying Xu Xiaoshuang Shi Rongbo Guo Shandong Industrial Engineering Laboratory of Biogas Production & Utilization Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences University of Chinese Academy of Sciences

Six different environmental samples were applied to enrich microbial consortia for efficient degradation of corn stalk,under the thermophilic and mesophilic *** consortium obtained from anaerobic digested sludge under thermophilic condition(TC-Y)had the highest lignocellulose-degrading *** CO_2yield was 246.73 m L/g VS in23 days,meanwhile,the maximum CO_2production rate was 15.48 mL/(CO_2·d),which was28.75%and 52.27%higher than that under mesophilic condition,*** peak value of cellulase activity reached 0.105 U/mL,which was at least 34.61%higher than the other *** addition,49.5%of corn stalk was degraded in 20 days,moreover,the degradation ratio of cellulose,hemicellulose and lignin can reach 52.76%,62.45%and42.23%,*** consortium structure analysis indicated that the TC-Y contained the phylum of Gemmatimonadetes,Acidobacteria,Chloroflexi,Planctomycetes,Firmicutes,and ***,the Pseudoxanthomonas belonging to GammaProteobacteria might be the key bacterial group for the lignocellulose *** results indicated the capability of degrading un-pretreated corn stalk and the potential for further investigation and application of TC-Y.

关键词： Corn stalk Lignocellulose degradation Microbial consortium Bacterial community structure

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A review on passenger emergency evacuation from multimodal transportation hubs

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第4期9卷 591-607页

作者： zhiman Xu Qiang Bai Yuqi Shao Aihui Hu Zhi Dong College of Transportation Engineering Chang'an UniversityXi'an 710064China

Multimodal transportation hubs serve as transfer points with the function of collecting,transferring,and distributing passengers and play a significant role in the entire multimodal transportation *** an emergency,the development of an effective and efficient emergency evacuation strategy to evacuate passengers from multimodal transportation hubs is very *** paper aims to conduct a comprehensive review on passenger emergency evacuations from multimodal transportation hubs,summarize the achievements,identify gaps in existing literature,thus to lay a solid foundation for future *** paper first reviewed studies on evacuee behavior characteristics in emergency evacuations,including pedestrian characteristics,pedestrian behavior characteristics,and pedestrian flow *** evacuation models,including pedestrian evacuation models and multimodal transportation evacuation models,were *** addition,a retrospective analysis was carried out for evacuation *** is found that while many studies have been conducted on passenger emergency evacuations from multimodal transportation hubs,most of them focus more on evacuating pedestrians from inside to outside of hub buildings;the studies on evacuation at multimodal transfer points are *** is also found that most existing studies tried to establish a general model to handle all types of emergency evacuations;in fact,a model would be more efficient if it is just established for a specific emergency and for a specific type of ***,existing data collection methods may collect biased data;new data collection methods need to be explored to increase the accuracy of data *** study directions include the evacuation at multimodal transfer points,interactive effects between individual pedestrian behavior and pedestrian group behavior,more specific types of emergency evacuations,more accurate data collection methods,and tradeoffs between cost and benefit in eme

关键词： Multimodal transportation hubs Emergency evacuation Passengers Pedestrian behavior Evacuation simulation

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A Simple Lumped Mass Model to Describe Velocity of Granular Flows in a Large Flume

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Journal of Mountain Science 2012年第2期9卷 221-231页

作者： YANG Qingqing CAI Fei UGAI Keizo SU zhiman HUANG Runqiu XU Qiang Department of Civil and Environmental Engineering Gunma University Kiryu 3768515 Japan Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection Chengdu University of Technology Chengdu 610059 China

This paper presents a lumped mass model to describe the run-out and velocity of a series of large flume tests,which was carried out to investigate some propagation mechanisms involved in rapid,dry,dense granular flows and energy transformation when the flows encountered obstacles and reoriented their movement *** between predicted and measured results show that the trend of predicted velocities was basically matched with that of measured *** scrutiny of test videos reveals that subsequent particles with a higher velocity collided with slowed fronts to make them accelerate. However,this simple model cannot reflect collisions between particles because it treated released materials as a rigid ***,the predicted velocity was somewhat lower than the measured velocity in most *** the flow changed its direction due to the variation in slope inclination,the model predicted a decrease in *** predicted decrease in velocity was less than the measured one within a reasonable range of 10% or *** some cases in which a convexity was introduced,the model also predicted the same trend of velocities as measured in the *** velocity increased greatly after the materials took a ballistic trajectory from the vertex of the convexity,and reduced dramatically when they finally made contact with the base of the lower *** difference between prediced and measured decrease in velocity was estimated to be about 5% due to the ***,the simple lumped mass model based on the energy approach could roughly predict the run-out and velocity of granular flows,although it neglected internal deformation,intergranular collision and friction.

关键词： Granular flow Large-scale flume test Mass-front velocity Deposit characteristic

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工业大麻CsMYB17基因克隆与表达分析

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中国麻业科学 2024年第4期46卷 204-212页

作者：周智满许英程超华戴志刚张小雨杨泽茂陈基权邓灿辉粟建光唐蜻中国农业科学院麻类研究所湖南长沙410221

为探究CsMYB17基因在工业大麻发育过程中的潜在功能,试验以工业大麻DMG265为材料,对CsMYB17基因进行克隆,并对其编码蛋白进行生信分析;结果表明,CsMYB1基因的CDS区为1005 bp,编码334个氨基酸,属于亲水性蛋白,并且无跨膜结构和信号肽,其... 详细信息

为探究CsMYB17基因在工业大麻发育过程中的潜在功能,试验以工业大麻DMG265为材料,对CsMYB17基因进行克隆,并对其编码蛋白进行生信分析;结果表明,CsMYB1基因的CDS区为1005 bp,编码334个氨基酸,属于亲水性蛋白,并且无跨膜结构和信号肽,其二级结构中无规则卷曲占比最高,与青蒿AaMYB同源性较高;对CsMYB17在大麻不同组织中的表达模式进行分析,结果表明,CsMYB17在雌花、腺毛中表达量相对较高,研究结果为了解CsMYB17在工业大麻发育中的功能提供了理论基础.

关键词：工业大麻 CsMYB17 基因克隆表达分析

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Hierarchical Co3O4 Microstructures Decorated with Ag and Cu Oxides： Study of Photocatalytic and Electrochemical Properties

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Journal of Wuhan University of Technology(Materials Science) 2017年第6期32卷 1336-1343页

作者：晏涛涛 WU Wenjian LIU Tao 吴明在 BAI zhiman Lü Qingrong ZHU Kerong School of Physics and Materials Science Anhui University Hefei 230039 China

Three-dimensional hierarchical Co3O4 microstructures decorated with Ag and Cu oxides were prepared via displacement reaction and subsequent annealing *** properties measurements revealed that the photocatalystic activities of Cu O/Co3O4 composites（Co3O4 microstructures decorated with Cu O）were enhanced while those of Ag2O/Co3O4 composites（Co3O4 microstructures decorated with Ag2O）were reduced,when compared with those of pure hierarchical Co3O4 microstructures toward the degradation of methyl *** addition,Cu O/Co3O4 composites exhibited an excellent recyclability ability of *** electrochemical properties test indicated that both of the composite oxide electrodes exhibited excellent pseudocapacitive performance with relatively high specific capacitance and good long-term cycling *** the increase of the loaded Ag2O and Cu O dosages deposited on the Co3O4 microstructures surface,the specific capacitance values of the composites were ***2O/Co3O4 composite electrodes showed higher specific capacitance values and better cycling stability than Cu O/Co3O4 composite ones.

关键词： composites chemical synthesis electrochemical measurements electrochemical

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Quantum-mechanical understanding on structure dependence of image potentials of single-walled boron nitride nanotubes

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Chinese Physics B 2024年第12期33卷 467-475页

作者： Yu Zhang zhiman Zhang Weiliang Wang Shaolin Zhang Haiming Huang Solid State Physics&Material Research Laboratory School of Physics and Materials ScienceGuangzhou UniversityGuangzhou 510006China Research Center for Advanced Information Materials(CAIM) Huangpu Research and Graduate School of Guangzhou UniversityGuangzhou 510555China School of Physics Guangdong Province Key Laboratory of Display Material and TechnologyCenter for Neutron Science and TechnologySun Yat-sen UniversityGuangzhou 510275China

The recent discovery of field emission devices based on one-dimensional nanostructures has attracted much interest in emerging applications on next-generation flat panel displays,molecule-based sensors,and so *** achieve a comprehensive understanding of surface potentials at the nano-emitters during the tunneling process,in this study we systematically investigated the image potentials of single-walled boron nitride nanotubes with different edges,diameters and lengths in the frame of a composite first-principles *** image potentials of zigzag single-walled boron nitride nanotubes are found to be dependent on the non-equivalent *** the image potentials of isolated armchair single-walled boron nitride nanotube can be well fitted with the image potential of an ideal metal sphere of a size comparable to the tube *** the contrary,the image potentials of zigzag and grounded armchair single-walled boron nitride nanotubes exhibit a strong length-dependence characteristic and are significantly different from that of an ideal metal sphere,which originates from the significant axial symmetry breaking of induced charge at the tip for the long *** correlation between the testing electron and electronic structure of single-walled boron nitride nanotube has also been discussed.

关键词： boron nitride nanotubes quantum chemistry image potentials structure dependence

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