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Acta Geologica Sinica(English Edition) 2000年第3期74卷 492-499页

作者： zhu yulin No.2 Geological Exploration Bureau of MMI 115 East St.Fuzhou 350001

The Daiyunshan-Shiniushan volcanic depression in Fujian Province is situated in a volcanic belt of the southeast coastal area in China along the west Pacific Ocean. A new breakthrough has been made in the exploration of gold and silver ore deposits in recent years. The minerogenic series of the Daiyunshan-Shiniushan volcanic depression is discussed in this paper based on the analysis of major metallogenic types and factors. According to the study of enormous ore deposits and occurrences in the study area, two minerogenic series have been recognized: 1. Late Jurassic Au-Ag-Pb-Zn minerogenic series related to intermediate-acid, acid volcanic formations; 2. nonmetallic minerogenic series (pyrophyllite, alunite pearlite, andalusite, zeolite, corundum and so on) related to intermediate and acid volcanic formations. The division and study of the minerogenic series have revealed metallogenic and time-space distribution characteristics of the ore deposits in the volcanic belt of the southeast coastal area in China, which are of economic importance for metallogenic prognosis.

关键词： continental volcanic rock minerogenic series Southeast China

Superior aggregation, morphology and photovoltaic performance enabled by fine tuning of fused electron-deficient units in polymer donors

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Journal of Energy Chemistry 2023年第2期77卷 19-26,I0002页

作者： Mingrui Pu Xue Lai Hui Chen Congcong Cao Zixiang Wei yulin zhu Leilei Tian Feng He Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongChina Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055GuangdongChina

Copolymerization of an electron-rich donor(D)unit with an electron-deficient acceptor(A)unit to construct efficient D-π-A-πtype donors is an effective strategy for organic solar cell *** electron-deficient unit fusion,endows extendedπ-conjugation plane and insures excellent photoelectronic property,has great advantages to build A moiety and gradually receives considerable *** this work,we adopt benzo[2,1-b:3,4-b’]dithiophene and benzopyrazine(BP),benzothiadiazole(BT)and benzoselenadiazole(BS)to cleverly construct a series of fused A units with different electrondeficient ability,and further synthesize three polymer donors PBDP-BP,PBDP-BT,and PBDP-BS,*** relationships between structure and performance were systematically *** shows a moderate aggregation behavior in both solution and film,and the highest hole mobility among the three *** blending with Y6,the PBDP-BT:Y6-based film has the strongest absorption,favorable compatibility,superior crystallinity,and uniform phase separation morphology compared with PBDP-BP or PBDP-BS based blend ***,the device based on PBDP-BT:Y6 has the highest and balanced charge mobility,suppressive recombination,reduced energy loss and achieves an outstanding PCE of 15.14%,which is superior to PBDP-BP:Y6(8.55%)and PBDP-BS:Y6(6.85%).These results provide learnable guidelines for future fused electron-deficient unit-based donor design for photovoltaic application.

关键词： Polymer donor Electron-deficient Aggregation behavior Morphology Organic solar cell

Tuning the Molecular Weight of Chlorine-Substituted Polymer Donors for Small Energy Loss

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Chinese Journal of Chemistry 2021年第6期39卷 1651-1658页

作者： Tingxing Zhao Huan Wang Mingrui Pu Hanjian Lai Hui Chen yulin zhu Nan Zheng Feng He Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhenGuangdong 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhenGuangdong 518055China Institute of Polymer Optoelectronic Materials and Devices State Key Loborotory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouGuangdong 510640China Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhenGuangdong 518055China

The molecular weight of polymers plays a major role in their aggregation and miscibility in active layer,which eventually dominate the energy loss and device performance.A series of chlorine-substituted PBD-CI polymers with controlled molecular weight have been synthesized as templates to discern a relationship between molecular weight and the optical properties,energy levels,morphologies,energy loss and photovoltaic *** it has similar optical and electrochemical properties,when blended with acceptor N3,the low molecular weight polymer PBD-CI_(L) gives the biggest energy loss value,and a PCE of 12.06%.PBD-CI_(H) shows a moderate energy loss,but displays the lowest PCE of 9.00%as a result of excessive ***-CI_(M) with a medium molecular weight gives the smallest energy loss and achieves a PCE of 17.17%,which is among one of the highest values recorded to date for the C卜substituted polymer solar ***,the molecular weight mainly affects the nonradiative energy loss(△E_(3)), PBD-CI_(M) also shows the smallest value of 0.252 eV among three polymer *** results show the effect of controlling the molecular weight to achieve a small energy loss and provide guidelines which can lead to an understanding of the real photovoltaic performance of new materials.

关键词： Molecular weight Chlorine Miscibility Energy loss Renewable resources

Biological properties of essential oil emphasized on the feasibility as antibiotic substitute in feedstuff

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Grain & Oil Science and Technology 2023年第1期6卷 10-23页

作者： Jingfu Pan yulin zhu Mohamed A.Abdel-Samie Changzhu Li Haiying Cui Lin Lin School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013China College of Life Science Yantai UniversityYantai 264005China Department of Food and Dairy Sciences and Technology Faculty of Environmental Agricultural SciencesArish UniversityEl-Arish 45511Egypt State Key Laboratory of Utilization of Woody Oil Resource Hunan Academy of ForestryChangsha 410007China

The discovery and application of antibiotics in animal feeds have boomed the development of intensive animal husbandry in the last century,until the emergence of antibiotics-resistant *** alleviate the risks aroused by antibiotics-resistant bacteria,effective antibiotic substitutes are urgently needed to replace *** oils(EOs)derived from plants are illustrated as the promising antibiotic substitutes used in animal feeds,as same as their current views for poultry and livestock industries in the *** has been widely demonstrated that the phytochemicals in EOs show multiple biofunctionability and are less likely to induce resistance in *** beneficial effects of EOs feed supplementation on the intestinal inflammation,intestinal flora,immunity,digestion,and growth performances have been already extensively ***,the cost-effectiveness,odor,volatility,instability and bioavailability are the challenges in effectively utilizing EOs in animal *** on previous researches,and these challenges can partially be resolved by microencapsulation and nanotechnology are promising techniques to deal with these *** article presents the feasibility and foundation of EOs application as antibiotic substitutes in animal feeds,and illustrates the mechanisms,functional performances and superiority of EOs compared with antibiotics.

关键词： Antibiotics Essential oils Animal feeds Enterobacteria Mechanism

Highly efficient tunable photodetector with a bipolar response in van der Waals heterojunctions

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Science China(Technological Sciences) 2024年第2期67卷 639-646页

作者： SHI ChaoFan ZHANG Shi XIAO KeNing ZHANG LiBo HAN Li zhu yulin TANG WeiWei LIU ChangLong LI GuanHai CHEN XiaoShuang College of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences Hangzhou310024China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

The heterojunction integration of two-dimensional(2D)materials via van der Waals(vdW)forces,unencumbered by lattice and processing constraints,constitutes an efficacious approach to enhance the overall optoelectronic performance of photodetectors,due to an assortment of distinctive light-matter ***,vdW heterojunction photodetectors based on transition metal dichalcogenides(TMDs)face an inevitable trade-off between low dark currents and high responsivity,curtailing the application potential of myriad novel optoelectronic components in sensing,spectral,and communication *** this study,we present the successful actualization of a highly sensitive,self-powered,and gate-tunable bipolar response *** mechanisms underlying photocurrent generation were scrutinized via bias-,power-,and position-dependent mapping photoresponse measurements,identifying the photovoltaic effect,which is attributable to the Schottky junction’s built-in electric field,as the predominant *** prototype Au-WS2-graphene photodetector exhibits a remarkable light on/off ratio of 1.2×10^(6),a specific detectivity of 6.12×10^(11)cm H^(z1/2)W^(-1)with 20μs response time at 638 *** wide gate-tunable responsivity provides an adjustability scope,ranging from 0.9 to 3.1 A W^(-1).Notably,the device demonstrates an exceptional linear photocurrent response,with a linear dynamic range(LDR)value approximating 130 dB,which significantly surpasses that of other photodetectors based on TMDs.

关键词： WS2/graphene van der Waals heterojunction gate-tunable bipolar response

Tb^(3+)-nucleic acid probe-based label-free and rapid detection of mercury pollution in food

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Food Science and Human Wellness 2024年第2期13卷 993-998页

作者： Xuhan Xia Chenxi Zhou yulin zhu Yi Dong Qiang He Mohammad Rizwan Khan Yuanlong Chi Rosa Busquets Ruijie Deng Yao Ren College of Biomass Science and Engineering Healthy Food Evaluation Research CenterSichuan UniversityChengdu 610065China Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia School of Life Sciences Pharmacy and ChemistryKingston University LondonKingston Upon Thames KT12EEUK

Mercury is a threatening pollutant in food,herein,we developed a Tb^(3+)-nucleic acid probe-based label-free assay for mix-and-read,rapid detection of mercury *** assay utilized the feature of light-up fluorescence of terbium ions(Tb^(3+))via binding with single-strand *** ion,Hg^(2+)induced thymine(T)-rich DNA strand to form a double-strand structure(T-Hg^(2+)-T),thus leading to fluorescence *** on the principle,Hg^(2+)can be quantified based on the fluorescence of Tb^(3+),the limit of detection was 0.0689μmol/L and the linear range was 0.1-6.0μmol/*** to the specificity of T-Hg^(2+)-T artificial base pair,the assay could distinguish Hg^(2+)from other metal *** recovery rate was ranged in 98.71%-101.34%for detecting mercury pollution in three food *** assay is low-cost,separation-free and mix-to-read,thus was a competitive tool for detection of mercury pollution to ensure food safety.

关键词： Mercury pollution Food safety Nucleic acid probe Label-free Terbium

QUANTITATIVE ANALYSIS ON THE DISTRIBUTION OF FOLLICULO-STELLATE CELLS AND THEIR AFFINTY TO ENDOCRINE CELLS IN HUMAN HYPOPHYSIS

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吉林大学学报(医学版) 1991年第6期 513-518页

作者： Li yulin, zhu Guibin, Qiu Tiedong, Yu Hongzao(Department of Pathology)

The distribution of folliculo-stellate cells (FSC) and their topographical relationship to endocrine cells (EC) were quantitatively analyzed in 59 human pituitaries immunostained with the anti-S100 serum. Two types of S100 positive cells appeared in the human adenohypophysis, namely stellate cells and follicular cells. FSC were not evenly distributed throughout the adenohypophysis, but significantly more dense in the central mucoid wedge than in the lateral acidophilic wings. Although FSC were spatially related to EC of every type, corticotrophs were most closely related to EC, while lactotrophs seemed relatively independent of EC. Aging as well as sex difference didn’t influence the distribution density of FSC in the acidophilic wing and the FSC-EC relationship, but a minor sex difference was found for the FSC density in the mucoid wedge.

关键词： Human adenohypophysis Folliculo-stellate cells S100 protein Immunohisto-chemistry Quantitative analysis

Crystallography,Packing Mode,and Aggregation State of Chlorinated Isomers for Efficient Organic Solar Cells

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CCS Chemistry 2023年第5期5卷 1118-1129页

作者： Hanjian Lai Xue Lai Zi-Yi Chen yulin zhu Hengtao Wang Hui Chen Pu Tan Yiwu zhu Yuanzhu Zhang Feng He Department of Chemistry Shenzhen Grubbs InstituteSouthern University of Science and TechnologyShenzhen 518055 School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001 Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055

Revealing the molecular packing,intermolecular interactions,and aggregation behaviors in the nanocrystalline bulk heterojunction(BHJ)domains undertake the tasks for future materials design for efficient solar cells,especially in understanding the structure–property relationship of isomeric non-fullerene acceptors(NFAs).Theoretical calculations reveal that 2ClIC-βδ,withβ-andδ-chlorine-substituted terminal groups,achieves a relatively higher dipole moment for enhanced intermolecular *** importantly,when comparing the single-crystal X-ray diffraction patterns of three isomeric NFAs,BTIC-BO4Cl-βδ,BTIC-BO4Cl-βγ,and BTIC-BO4Cl,the synergistic effect of chlorine atoms at theβ-andδ-positions endows BTIC-BO4Cl-βδbetter molecular planarity with a dihedral angle of 1.14°.In turn,this creates the shortestπ∙∙∙πdistance(3.28Å)and smallest binding energies(−51.66 kcal mol^(−1))of the three NFAs,resulting in the tightest three-dimensional network packing structure with a framework of L_(x)=14.0Åand L_(y)=13.6Å.Such a structure has multiple intermolecular interactions for better charge ***,the chlorine atomat theγ-position in the other two isomers contributes to non-intermolecular interactions with subordinate packing ***,the red-shifted UV-absorption and higher electron mobility observed in neat films of BTIC-BO4Cl-βδagree well with its more ordered *** leads to a more suitable fiber-like phase separation in the corresponding active blend,ultimately improving the device performance with superior charge *** a result,the highest power conversion efficiency of 17.04%with a current density of 26.07 mA cm^(−2)was obtained with the BTIC-BO4Cl-βδ-based *** carrier dynamics test and grazing incidence wide-angle X-ray scattering measurement indicate that the packing arrangement of molecules in the nanocrystalline BHJ domains is consistent with their *** work investigates the structure–property dif

关键词： chlorinated isomer three-dimensional network packing size of framework intermolecular junction single crystal

Yield of Agricultural Eco-economic System in Dongting Rim

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Asian Agricultural Research 2013年第10期5卷 61-67页

作者： Maozhang HOU yulin zhu School of Economics Central South University of Forestry and Technology Economy of Agriculture and Forestry Research Center Central South University of Forestry and Technology Hunan Provincial Engineering Laboratory of Risk Management and Control Techniques for Innovative Enterprise

To analyze the efficiency of the agro-ecosystem of Dongting Rim in Hunan Province,this paper adopted the emergy theory to study the agricultural output of this region during 2001 to *** results showed that the value of regional agricultural emergy output increased by44.68%to(6.50 E)sej,but lower than the growth of non-agricultural industry *** with 2001,the emergy output of planting industry was(4.10E)sej in 2010 which occupied 63.09%of the total agricultural emergy output and got an increase of 2.93 percentage points,while the emergy output of stock farming got a decrease of 2.87 percentage *** growth of fishery emergy output was not in conformity with the characteristics of Dongting Rim in *** the contrast between emergy output and economic output,we could find that the economic return ratio of planting industry and fishery industry were lower than those of forestry industry and stock farming industry,which indicated that it is necessary to improve the economic benefits of planting industry and fishery industry which were the traditional industries with advantages of the Dongting Rim in Hunan.

关键词： Dongting Rim Agricultural eco-economic system Emer

PERTURBATIONS OF A KIND OF DEGENERATE QUADRATIC HAMILTONIAN SYSTEM WITH SADDLE-LOOP

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Chinese Annals of Mathematics,Series B 2002年第1期23卷 85-94页

作者： ZHAO yulin,WU XIAOMING,zhu SIMING Department of Mathematics. Zhongshan University, Guangzhou 510275. China. E-mail: mcszyl@*** Department of Mathematics Zhongshan University Guangzhou 510275 China

The authors investigate a kind of degenerate quadratic Hamiltonian systems with saddle-loop. Under quadratic perturbations, it is proved that the perturbed system has at most two limit cycles in the finite plane. The ... 详细信息

关键词： Limit cycles Quadratic systems Abelian integrals