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Evaluating the eff ect of input variables on quantifying the spatial distribution of croaker Johnius belangerii in Haizhou Bay,China

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Journal of Oceanology and Limnology 2021年第4期39卷 1570-1583页

作者： yunlei ZHANG Ying XUE Binduo XU Chongliang ZHANG Xiaoxiao ZAN College of Fisheries Ocean University of ChinaQingdao 266003China Marine College Shandong UniversityWeihai 264209China Field Observation and Research Station of Haizhou Bay Fishery Ecosystem Ministry of EducationQingdao 266003China

A habitat model has been widely used to manage marine species and analyze relationship between species distribution and environmental *** predictive skill in habitat model depends on whether the models include appropriate explanatory *** to limited habitat range,low density,and low detection rate,the number of zero catches could be very large even in favorable *** zeroes will increase the bias and uncertainty in estimation of ***,appropriate explanatory variables need to be chosen first to prevent underestimate or overestimate species abundance in habitat *** addition,biotic variables such as prey data and spatial autocovariate(SAC)of target species are often ignored in species distribution ***,we evaluated the eff ects of input variables on the performance of generalized additive models(GAMs)under excessive zero catch(>70%).Five types of input variables were selected,i.e.,(1)abiotic variables,(2)abiotic and biotic variables,(3)abiotic variables and SAC,(4)abiotic,biotic variables and SAC,and(5)principal component analysis(PCA)based abiotic and biotic variables and ***’s croaker Johnius belangerii is one of the dominant demersal fish in Haizhou Bay,with a large number of zero catches,thus was used for the case *** show that the PCA-based GAM incorporated with abiotic and biotic variables and SAC was the most appropriate model to quantify the spatial distribution of the *** variables and SAC were important and should be incorporated as one of the drivers to predict species *** study suggests that the process of input variables is critical to habitat modelling,which could improve the performance of habitat models and enhance our understanding of the habitat suitability of target species.

关键词： generalized additive model principal component analysis biotic variables spatial autocovariate

Sodium decorated net-Y nanosheet for hydrogen storage and adsorption mechanism: A first-principles study

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Chinese Physics B 2020年第1期29卷 393-397页

作者： yunlei Wang Yuhong Chen Yunhui Wang College of Materials Science and Engineering Nanjing Tech UniversityNanjing 210009China Department of Pharmaceutics School of PharmacyChina Pharmaceutical UniversityNanjing 211198China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China

Using first-principles calculations based on density functional theory(DFT),we investigate the potential hydrogen storage capacity of the Na-decorated net-Y single layer *** double-side Na decoration,the average binding energy is 1.54 eV,which is much larger than the cohesive energy of 1.13 eV for bulk Na.A maximum of four H2 molecules can be adsorbed around each Na with average adsorption energies of 0.25–0.32 eV/***,H2 storage gravimetric of 8.85 wt%is obtained,and this meets the *** of Energy(DOE)ultimate *** results are instrumental in seeking a promising hydrogen energy carrier.

关键词： hydrogen storage net-Y storage gravimetric density functional theory

Exercise-with-melatonin therapy improves sleep disorder and motor dysfunction in a rat model of ischemic stroke

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Neural Regeneration Research 2024年第6期19卷 1336-1343页

作者： Haitao Zhao Tong Zhang Haojie Zhang yunlei Wang Lingna Cheng School of Rehabilitation Medicine Capital Medical UniversityBeijingChina Department of Neurological Rehabilitation Beijing Bo’ai HospitalChina Rehabilitation Research CenterBeijingChina School of Rehabilitation Medicine University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina Laboratory of Brain Injury Repair and Rehabilitation China Rehabilitation Science InstituteBeijingChina

Exercise-with-melatonin therapy has complementary and synergistic effects on spinal cord injury and Alzheimer's disease,but its effect on stroke is still poorly *** this study,we established a rat model of ischemic stroke by occluding the middle cerebral artery for 60 *** treated the rats with exercise and melatonin therapy for 7 consecutive *** showed that exercise-with-melatonin therapy significantly prolonged sleep duration in the model rats,increased delta power values,and regularized delta power ***,exercise-with-melatonin therapy improved coordination,endurance,and grip strength,as well as learning and memory *** the same time,it led to higher hippocampal CA1 neuron activity and postsynaptic density thickness and lower expression of glutamate receptor 2 than did exercise or melatonin therapy *** findings suggest that exercise-withmelatonin therapy can alleviate sleep disorder and motor dysfunction by increasing glutamate receptor 2 protein expression and regulating hippocampal CA1 synaptic plasticity.

关键词： exercise glutamate receptor 2 hippocampus ischemic stroke learning melatonin memory sleep disorder synaptic plasticity

A Metonymic Approach to Chinese Horse Idioms

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A Metonymic Approach to Chinese Horse Idioms

作者： Jiang yunlei 西安外国语大学

学位级别：硕士

本文尝试从概念转喻的角度研究汉语马字成语，意在找出马字成语的形成和理解背后的运作机制。本文主要处理三个问题：一．马字成语都有哪些转喻映射类型？二．“马”字成语都转喻映现哪些领域？三．从转喻的角度来看，“马”字成语的意... 详细信息

本文尝试从概念转喻的角度研究汉语马字成语，意在找出马字成语的形成和理解背后的运作机制。本文主要处理三个问题：一．马字成语都有哪些转喻映射类型？二．“马”字成语都转喻映现哪些领域？三．从转喻的角度来看，“马”字成语的意义产生和传播的机制是什么？还有没有其他理据？本研究分析了大量汉语马字成语，尝试对其形成和运作机制进行更细致的分析。本研究发现：一.汉语马字成语的形成受到转喻机制的影响，其转喻方式主要有六种：部分转喻整体;整体转喻部分;静态事物转喻动态活动;动态活动转喻静态状态或品质;范畴本身转喻其特点;行动转喻其结果。二.汉语马字成语主要映现到三个领域：军事，交通与通信和用于自谦。三.转喻机制在马字成语的形成、语义拓展等方面发挥了不可替代的作用。另外，马字成语的形成还有其他理据：语言的经济性原则;文化因素;身体经验和常识。本研究发现转喻同样普遍存在于人们的生产生活实践中，转喻的地位丝毫不亚于隐喻。从转喻的角度研究“马”字成语，能够为转喻理论提供有力支撑，丰富和发展转喻理论;本研究对于国内汉语教学、对外汉语教学实践都具有指导意义;对于翻译与翻译研究实践也具有参考价值。

关键词：汉语马字成语转喻运作机制

Advances in direct production of value-added chemicals via syngas conversion

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Science China Chemistry 2017年第7期60卷 887-903页

作者： yunlei an Tiejun Lin Fei Yu Yanzhang Yang Liangshu Zhong Minghong Wu Yuhan Sun School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China CAS Key Laboratory of Low-Carbon Conversion Science and Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201203China University of the Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201203China

Syngas conversion to fuels and chemicals is one of the most challenging subjects in the field of C1 chemistry. It is considered as an attractive alternative non-petroleum-based production route. The direct synthesis of olefins and alcohols as high value-added chemicals from syngas has drawn particular attention due to its process simplicity, low energy consumption and clean utilization of carbon resource, which conforms to the principles of green carbon science. This review describes the recent advances for the direct production of lower olefins and higher alcohols via syngas conversion. Recent progress in the development of new catalyst systems for enhanced catalytic performance is highlighted. We also give recommendations regarding major challenges for further research in syngas conversion to various chemicals.

关键词： green carbon science syngas conversion Fischer-Tropsh Fischer-Tropsh to olefins higher alcohol synthesis

High levels of genetic diversity and an absence of genetic structure among breeding populations of the endangered Rufous-backed Bunting in Inner Mongolia,China:implications for conservation

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Avian Research 2021年第1期12卷 52-62页

作者： Shi Li Dan Li Lishi Zhang Weiping Shang Bo Qin yunlei Jiang College of Animal Science and Technology Jilin Agricultural University

Background:The Rufous-backed Bunting,Emberiza jankowskii,is an endangered species that is primarily distributed in Inner Mongolia,*** main threats to the continued persistence of this species are habitat loss and ***,the impact of population loss on genetic diversity remains *** support future conservation and management efforts,we assessed the genetic diversity and population structure of *** using mitochondrial DNA and ***:Blood samples were collected from 7-8-day-old nestlings in Inner Mongolia,China between May and August of 2012 and *** DNA sequences and microsatellite markers were used to assess the genetic diversity,genetic structure and inbreeding of *** results of genetic diversity and inbreeding were compared to other avian ***:We found an unexpectedly high level of genetic diversity in terms of mitochondrial DNA and microsatellite compared to other avian ***,there were high levels of gene flow and minimal genetic structuring,among the fragmented breeding populations of *** in Inner *** findings suggest that *** in Inner Mongolia is a *** the high genetic diversity of ***,local populations in each small patch remain at risk of extinction due to habitat *** addition,the *** population has a high risk of ***:To minimize further loss of genetic diversity of this endangered species,we suggest that the *** in Inner Mongolia should be considered as a protected species for management *** efforts should concentrate on *** habitat *** may be most effectively achieved by protecting the current breeding habitats and prohibiting over-grazing.

关键词： Conservation Emberiza jankowskii Genetic diversity Genetic structure Habitat fragmentation

Numerical simulation of foam diversion acidizing in heterogeneous reservoirs

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Petroleum 2022年第4期8卷 516-521页

作者： Hui Yuan Xiao Chen Nianyin Li Hongyu Zhou yunlei Gong Yuan Wang Zhanjiang Branch of CNOOC(China)Co.Ltd. ZhanjiangChina State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation Engineering Southwest Petroleum UniversityChengduChina

Foam diversion acidizing can effectively solve the problem of acid distribution with severe heterogeneity between and within *** on the foam diversion principle,the gas trap theory,and volume conservation principle,the foam slug diversion acidizing model was established and solved considering the change of bottomhole temperature and deviation factor of *** simulation results show that the change of temperature has a great influence on the diversion effect at the initial stage of injection,but a small influence at the middle and late *** effect of temperature on the highly permeable layer is greater than that of temperature on the low permeability *** deviation factor of foam is mainly controlled by temperature at the initial stage,and by pressure at the middle and late stage,and the whole process shows a downward trend,which has little influence on the diversion *** quasi-skin factor of gas trap is the most important parameter that influences the effect of foam *** water saturation of the low permeability layer rises faster than that of the high permeability layer,and the effect of diversion is *** research results have a strong guiding significance for foam diversion acidizing.

关键词： Foam Diversion acidizing Gas trap Temperature Deviation factor of foam

Explicating the Role of Metal Centers in Porphyrin-Based MOFs of PCN-222(M) for Electrochemical Reduction of CO_(2)

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Chinese Journal of Structural Chemistry 2022年第7期41卷 46-52页

作者： Mengjie Liu Mengting Peng Baoxia Dong yunlei Teng Ligang Feng Qiang Xu School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhouJiangsu 225002China

The porphyrin-based MOFs formed by combining Zrclusters and porphyrin carboxylic acids with clear M-Nactive centers show unique advantages in electrocatalytic reduction of CO(CORR). However, its conductivity is still the bottleneck that limits its catalytic activity due to the electrical insulation of the Zr cluster. Therefore, the porphyrin-based MOFs of PCN-222(M)(M = Mn, Co, Ni, Zn) with explicit M-Ncoordination were combined with the highly conductive material carbon nanotube(CNT) for discussing the influence of metal centers on the CORR performance based on theoretical calculations and experimental observations. The results show that the PCN-222(Mn)/CNT, PCN-222(Co)/CNT, and PCN-222(Zn)/CNT all exhibit high selectivity to CO(FECO > 80%) in the range of-0.60 to-0.70 V vs. RHE. The FECOmax of PCN-222(Mn)/CNT(-0.60 V vs. RHE), PCN-222(Co)/CNT(-0.65 V vs. RHE), and PCN-222(Zn)/CNT(-0.70 V ***) are 88.5%, 89.3% and 92.5%, respectively. The high catalytic activity of PCN-222(Mn)/CNT and PCN-222(Co)/CNT comes from the excellent electron mobility of their porphyrin rings and their low ΔG*COOH(0.87 and 0.58 eV). It reveals that the strength of backbonding π of the transition metal and its influence on the electron mobility in the porphyrin ring can affect its CORR activity.

关键词： PCN-222 electrochemical reduction of CO_(2) DFT calculation MOFs

Microthermometry and Synchrotron Radiation X-ray Fluorescence Analysis of Fluid Inclusions in the Dongping Gold Deposit,Northern Margin of the North China Craton

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 501-512页

作者： WEI Hao CHU Haixia XU Jiuhua LI Dong FENG yunlei ZHANG Guorui Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China China University of Geosciences(Beijing) Beijing 100083China University of Science and Technology Beijing Beijing 100083China East China University of Technology Nanchang 330013China

To shed light on the genesis of the Dongping deposit and reveal the behaviour of CO_(2),Au and other ore elements(e.g.,Cu,Fe,Zn,As,Sb,Co etc.)in ore-forming fluids,petrographic,microthermometric and synchrotron radiation X-ray fluorescence(SRXRF)analyses of fluid inclusions were *** ore-forming fluid is characterized as an H_(2)O-CO_(2)-NaCl system with medium-high temperatures and low *** mineralization stages are identified,namely,feldsparquartz(stage 1);pyrite-white quartz(stage 2);sulfide-smoky grey quartz(stage 3);and carbonate-quartz(stage 4).Three types of inclusions were distinguished,based on fluid composition,phase assemblages and mode of *** A:H_(2)O-rich fluid inclusions show 2 phases(liquid H_(2)O(LH_(2)O)+vapour H_(2)O(VH_(2)O))at room temperature and homogenize to the liquid *** B:H_(2)O-CO_(2)fluid inclusions contain 2–3 phases(liquid H_(2)O(LH_(2)O)+vapour CO_(2)(VCO_(2));liquid H_(2)O(LH_(2)O)+liquid CO_(2)(LCO_(2)));liquid H_(2)O(LH_(2)O)+liquid CO_(2)(LCO_(2))+vapour CO_(2)(VCO_(2)))at room temperature and homogenized to the liquid H_(2)O *** C:H_(2)O-CO_(2)fluid inclusions show 2 phases(liquid H_(2)O(LH_(2)O)+liquid CO_(2)(LCO_(2))at room temperature and homogenize to a critical ***_(2)is clearly more enriched in the fluid inclusions of stages 2 and 3 than in stage *** 1 is dominated by type A(H_(2)O-rich)inclusions with homogenization temperatures(Th)of 220–359℃and salinities of 1.1–3.1 wt%NaCl *** B(CO_(2)-rich)inclusions gradually increase in stages 2 and *** Th range of type B inclusions in stage 2 is 241–397℃with salinities of 2.2–6.9 wt%NaCl equivalent;the Th range of type A inclusions is 217–373℃with salinities of 1.2–8.1 wt%NaCl *** Th range of type B inclusions in stage 3 is 215–361℃with salinities of 2.9–6.1 wt%NaCl equivalent;the range of type A inclusions is 158–351℃with a salinity of 0.7–5.5 wt%NaCl *** 4 is characterized by type A with

关键词： petrographic studies fluid inclusion gold deposit SRXRF Dongping