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Intercalated phases of transition metal dichalcogenides

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SmartMat 2020年第1期1卷 104-130页

作者： ziying wang Runlai Li Chenliang Su Kian Ping Loh SZU‐NUS Collaborative Innovation Center for Optoelectronic Science&Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhenChina Department of Chemistry National University of SingaporeSingaporeSingapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhouChina

Two‐dimensional transition metal dichalcogenides(TMDs)play host to a wide range of novel topological states,such as quantum spin Hall insulators,superconductors,and Weyl *** rich polymorphism in TMDs suggests that phase engineering can be used to switch between different charge order *** of atoms or molecules into the van der Waals gap of TMDs has emerged as a powerful approach to modify the properties of the material,leading to phase transition or the formation of substoichiometric phases via compositional tuning,thus broadening the electronic and optical landscape of these materials for a wide range of ***,we review the current efforts in the preparation of intercalated *** challenges and opportunities for intercalated TMDs to create a new device paradigm for material science are discussed.

关键词： ferromagnetism intercalation superconductivity transition metal dichalcogenides two dimensional materials

Paleo-uplift forced regional sedimentary evolution:A case study of the Late Triassic in the southeastern Sichuan Basin,South China

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Petroleum 2024年第3期10卷 462-473页

作者： Fangyu He Qingsong Cheng Dongtao Zhang Yubing Ji ziying wang Tenghui Lu PetroChina Zhejiang Oilfield Company Hangzhou 310023China School of Geoscience and Technology Southwest Petroleum UniversityChengdu610500China Sichuan Natural Gas Geology Key Laboratory Southwest Petroleum UniversityChengdu610500China

The sedimentary environment of the Upper Triassic in the southeastern Sichuan Basin is obviously controlled by Luzhou paleo-uplift(LPU).However,the influence of paleo-uplift on the sedimentary patterns of the initial stages of this period in the southeastern Sichuan Basin has not yet been clear,which has plagued oil and gas exploration and *** study shows that there is a marine sedimentary sequence,which is considered to be the first member of Xujiahe Formation(T_(3)X^(1))in the southeastern Sichuan *** development of LPU resulted in the sedimentary differences between the eastern and western Sichuan Basin recording T_(3)X^(1)and controlled the regional sedimentary *** western part is dominated by marine sediments,but the eastern paleo-uplift area is dominated by continental sedimentation in the early stage of T_(3)X^(1),and it begins to transform into a marine sedimentary environment consistent with the whole basin in the late stage of the period recorded by the Xujiahe *** evidences are as follows:(1)time series:based on the cyclostratigraphy analysis of Xindianzi section and Well D2,in the southeastern Sichuan Basin,the period of sedimentation of the Xujiahe Formation is about 5.9 Ma,which is basically consistent with the Qilixia section,eastern Sichuan basin,where the Xujiahe Formation is widely considered to be relatively complete;(2)distribution and evolution of palaeobiology:based on analysis of abundance evolution of major spore-pollen,many land plant fossils are preserved in the lower part of T_(3)X^(1),indicates the sedimentary environment of continental *** the upper part of T_(3)X^(1),the fossil of terrestrial plants decreased,while the fossil of marine and tidal environment appeared,this means that it was affected by the sea water in the late stages of T_(3)X^(1);(3)geochemistry:calculate the salinity of water from element indicates that the uplift area is continental sedimentary environment in the early stage

关键词： Luzhou paleo-uplift Late Triassic Cyclostratigraphy Palynology Sedimentary environment

Studies on QCM-type NO2 Gas Sensor Based on Graphene Composites at Room Temperature

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Chemical Research in Chinese Universities 2016年第6期32卷 924-928页

作者： QI Pengjia wang ziying wang Rui XU Yinan ZHANG Tong College of Engineering Yanbian University Yanji 133002 P. R. China College of Electronic Science and Engineering Jilin University Changchun 130012 P. R. China

Synthetic graphene composite was modified on a transducer of quartz crystal microbalance（QCM） tofabricate a gas sensor for low concentration nitrogen dioxide（NO2） detection. The gas sensing properties of the QCMcoated with SnO2-rGO and AgNPs-SnO2-rGO composites were investigated when exposing QCM to low NO2 con-centration（2.05--20.5 mg/m3） atmosphere at room temperature. The sensing performances of ,he QCM withAgNPs-SnO2-rGO composites were enhanced by the introduction of Ag nanoparticles, and the QCM modified withAgNPs-SnO2-rGO composites could detect NO2 at room temperature.

关键词： Quartz crystal microbalance Nitrogen dioxide Low concentration Qraphene Room temperature

Rational Design ofAg Nanocubes-Reduced Graphene Oxide Nanocomposites for High-performance Non-enzymatic H2O2 Sensing

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Chemical Research in Chinese Universities 2017年第6期33卷 946-950页

作者： JI Ye HAN Tianyi ZHANG Yong wang ziying ZHANG Tong LENG Jiyan State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changehun 130012 P. R. China First Hospital of Jilin University Changchun 130021 P. R. China

Ag nanocubes-reduced graphene oxide（AgNCs-rGO） nanocomposite was successfully prepared by an in situ synthesis method, in which AgNCs were loaded onto the surface of rGO during the formation of AgNCs in an ethylene glycol solution. Characterization by X-ray diffraction, UV-Vis spectroscopy, and scanning electron microscopy indicated the successful preparation of the AgNCs-rGO nanocomposite. Most importantly, the AgNCs-rGO nanocomposite exhibited excellent electrocatalytic activity for the reduction of H2O2, leading to a high-performance non-enzymatic H2O2 sensor with a linear detection range and detection limit of approximately 0.1 mmol/L to 70 mmol/L（r=0.999） and 0.58 μmol/L, respectively. Our present work provides a new and highly efficient method for fabricating high-performance electrochemical sensors.

关键词： H2O2 sensor Ag nanocube Reduced graphene oxide

Surface microstructure-controlled ZrO_(2) for highly sensitive room-temperature NO2 sensors

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Nano Materials Science 2021年第3期3卷 268-275页

作者： Yuhua Yan Zongtao Ma Jingyao Sun Miaomiao Bu Yanming Huo ziying wang Yunfei Li Ning Hu Tianjin Key Laboratory of Electronic Materials and Devices School of Electronics and Information EngineeringHebei University of Technology5340 Xiping RoadTianjin300401PR China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin300130PR China National Engineering Research Center for Technological Innovation Method and Tool And School of Mechanical EngineeringHebei University of TechnologyTianjin300401PR China Center for Advanced Laser Technology Hebei University of TechnologyTianjin300401PR China Hebei Key Laboratory of Advanced Laser Technology and Equipment Tianjin300401PR China

The high sensitivity of room-temperature gas sensors is the key to innovation in the areas of environment,energy conservation and ***,metal-oxide-based sensors generally operate at high ***,we designed three ZrO_(2)-based sensors and explored their NO_(2)sensing properties at room ***_(2)with three different morphologies and microstructure were synthesized by simple hydrothermal *** microstructures of sensing materials are expected to significantly affect gas sensing *** rod-shaped ZrO_(2)(ZrO_(2)-R)displayed the advantages such as higher crystallinity,larger pore size,narrower band gap and more chemisorbed adsorbed oxygen,compared to hollow sphere-shaped ZrO_(2)(ZrO_(2)-HS),stellate-shaped ZrO_(2)(ZrO_(2)–S).The ZrO_(2)-R sensor showed the highest response towards 30 ppm NO_(2)(423.8%)at room temperature,and a quite high sensitivity of 198.0%for detecting 5 ppm NO_(2).Although ZrO_(2)-HS and ZrO_(2)–S sensors exhibited lower response towards 30 ppm NO_(2)(232.9%and 245.1%),the response time and recovery time of these two sensors are 5 s/19 s and 4 s/3 s,*** work can provide a new strategy for the development of roomtemperature metal-oxide-based sensors.

关键词： ZrO_(2) Room temperature Microstructure Chemisorbed adsorbed oxygen NO_(2)

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红掌特伦萨四倍体的离体诱导及其鉴定

核农学报 2025年第1期39卷 10-18页

作者：乔永旭张永平张卫华张惠敏龚荣娅王紫莹高丽红宿迁学院生物与材料工程学院江苏宿迁223800 天津农学院园艺园林学院天津300384 中国农业大学园艺学院北京100193

为了研究红掌四倍体的离体诱导和鉴定技术体系,为其倍性育种和杂交育种奠定基础,以特伦萨愈伤组织为试验材料,采用0.5、1.0、2.0、4.0 g·L^(-1)的秋水仙素分别处理2、4、6、8 h,之后转入培养基MS+6-BA 2.0 mg·L^(-1)+NAA 0.5 mg·L^(... 详细信息

为了研究红掌四倍体的离体诱导和鉴定技术体系,为其倍性育种和杂交育种奠定基础,以特伦萨愈伤组织为试验材料,采用0.5、1.0、2.0、4.0 g·L^(-1)的秋水仙素分别处理2、4、6、8 h,之后转入培养基MS+6-BA 2.0 mg·L^(-1)+NAA 0.5 mg·L^(-1)进行愈伤组织的生长和丛生芽分化,75 d后将丛生芽转入培养基1/2 MS+NAA 0.2 mg·L^(-1)诱导生根,待丛生芽生根后统计愈伤组织块存活率、再生植株数,并对再生植株进行染色体倍性鉴定和核型分析。结果表明,随着秋水仙素浓度的增加,红掌愈伤组织块存活率呈下降趋势,但愈伤组织块上诱导的再生植株数无显著变化;在0.5~2.0 g·L^(-1)的秋水仙素浓度范围内,红掌疑似四倍体的诱导率随着处理浓度与时间的增加而增加,2.0 g·L^(-1)秋水仙素处理6与8 h时,诱导率达8.50%与8.77%;特伦萨和疑似四倍体红掌的基因组分别为3.73和7.01 Gb;染色体压片倍性鉴定结果证明了疑似四倍体的倍性为四倍体。红掌二倍体的核型公式为2n=2x=30=8 st+16 sm+6 m,四倍体的核型公式为2n=4x=60=8 st+32 sm+20 m;与红掌二倍体植株相比,四倍体植株叶片变厚、气孔变大、保卫细胞密度变小,佛焰苞直径变大,单个花序花期变长,差异均达显著水平。综上,采用2.0 g·L^(-1)秋水仙素处理6 h可培育红掌四倍体植株,此四倍体可作为红掌倍性育种和杂交育种的重要种质资源。

关键词：红掌二倍体四倍体倍性鉴定流式细胞术

Two-step model of paleohexaploidy, ancestral genome reshuffling and plasticity of heat shock response in Asteraceae

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Horticulture Research 2023年第6期10卷 82-95页

作者： Xiangming Kong Yan Zhang ziying wang Shoutong Bao Yishan Feng Jiaqi wang Zijian Yu Feng Long Zejia Xiao Yanan Hao Xintong Gao Yinfeng Li Yue Ding Jianyu wang Tianyu Lei Chuanyuan Xu Jinpeng wang Department of Bioinformatics School of Life Sciencesand Center for Genomics and Computational BiologyNorth China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

An ancient hexaploidization event in the most but not all Asteraceae plants,may have been responsible for shaping the genomes of many horticultural,ornamental,and medicinal plants that promoting the prosperity of the largest angiosperm family on the ***,the duplication process of this hexaploidy,as well as the genomic and phenotypic diversity of extant Asteraceae plants caused by paleogenome reorganization,are still poorly *** analyzed 11 genomes from 10 genera in Asteraceae,and redated the Asteraceae common hexaploidization(ACH)event∼70.7–78.6 million years ago(Mya)and the Asteroideae specific tetraploidization(AST)event∼41.6–46.2 ***,we identified the genomic homologies generated from the ACH,AST and speciation events,and constructed a multiple genome alignment framework for ***,we revealed biased fractionations between the paleopolyploidization produced subgenomes,suggesting the ACH and AST both are allopolyplodization ***,the paleochromosome reshuffling traces provided clear evidence for the two-step duplications of ACH event in ***,we reconstructed ancestral Asteraceae karyotype(AAK)that has 9 paleochromosomes,and revealed a highly flexible reshuffling of Asteraceae *** specific significance,we explored the genetic diversity of Heat Shock Transcription Factors(Hsfs)associated with recursive whole-genome polyploidizations,gene duplications,and paleogenome reshuffling,and revealed that the expansion of Hsfs gene families enable heat shock plasticity during the genome evolution of *** study provides insights on polyploidy and paleogenome remodeling for the successful establishment of Asteraceae,and is helpful for further communication and exploration of the diversification of plant families and phenotypes.

关键词： shuffling shock plasticity

THE COMPARISON OF THE EFFECT BETWEEN THE ORIGINAL AND ELECTRICAL ACUPUNCTURE ON SOME CYTOCHEMICALCOMPONENTS OF MEDIAN EMINENTIA AND SUPRAOPTIC NUCLEUS

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针刺研究 1989年第Z1期 107-108页

作者： Ge Zi wang ziying Jia Lin Institute of Acupuncture and Moxibustion, China Academy of TCM

The effects of original and clectroacupuncture (OA, EA) upon hypothalamo pituitarysystem was made for providing the theoratical basis in further wideapplication of acupuncture treatment. 246 healthy, adult and male rats were selected in this experiments. Itwas divided into OA, EA and control at random. The painthreshold were me-asured 30 minutes after both kinds of acupuncture, they were elevated signifi-cantly than that of the control.

关键词： THE COMPARISON OF THE EFFECT BETWEEN THE ORIGINAL AND ELECTRICAL ACUPUNCTURE ON SOME CYTOCHEMICALCOMPONENTS OF MEDIAN EMINENTIA AND SUPRAOPTIC NUCLEUS OA than

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基于支持矢量聚类的机械故障诊断

机械工程学报 2009年第4期45卷 226-230页

作者：王自营邱绵浩安钢装甲兵工程学院机械工程系北京100072

针对无监督的支持矢量聚类方法由于样本类别数量未知带来的模型参数难以选择的问题,提出有监督的支持矢量聚类方法,并应用到机械故障诊断中。该方法首先以聚类区域个数及支持矢量个数作为模型参数的选择准则,以支持矢量为核估计样本分... 详细信息

针对无监督的支持矢量聚类方法由于样本类别数量未知带来的模型参数难以选择的问题,提出有监督的支持矢量聚类方法,并应用到机械故障诊断中。该方法首先以聚类区域个数及支持矢量个数作为模型参数的选择准则,以支持矢量为核估计样本分布的概率密度,并根据概率密度估计值选择不同聚类区域的类别代表样本,而后引入k近邻法实现对不同故障的分类。对测试样本的分类结果表明了该方法的有效性。

关键词：支持矢量聚类故障诊断 k 近邻法