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武汉大学学报(自然科学版) 1980年第4期 70-76页

作者：保宗悌王挺柱陈松柏刘曾厚石建平张继征

本文首先对哨声特别是低纬度哨声的研究作了简短的历史回顾;其次将武昌地区哨声的观测结果作了初步的报导,并略加讨论。

关键词：电离层传播路径导管波导模式时延差大气圈木质部色散常数低纬低纬度径迹激励源波导传播磁层检波点接收点武昌

Comparative transcriptome analysis identifies differentially expressed genes between normal and late-blooming Siberian apricot

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Journal of Forestry Research 2019年第6期30卷 2277-2288页

作者： Zhe wang Shuang Song songbai Sheng Ju Tian Rongling Wu Xiaoming Pang Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree BreedingKey Laboratory of Genetics and Breeding in Forest Trees and Ornamental PlantsMinistry of EducationCenter for Computational BiologyCollege of Biological Sciences and BiotechnologyBeijing Forestry UniversityBeijing 100083People’s Republic of China Center for Computational Biology College of Biological Sciences and BiotechnologyBeijing Forestry UniversityBeijing 100083People’s Republic of China Inner Mongolia Hesheng Ecological Science and Technology Research Institute Huhhot 011517People’s Republic of China

Blooming date is an important trait in fruit tree *** several quantitative trait loci confirming blooming date were identified in Prunus spp.,the molecular mechanism underlying it remains *** from this,the transcriptomes of normal blooming and lateblooming Siberian apricot(*** L.)flower buds were analyzed using RNA-seq technology.A total of 68,855 unigenes were de novo assembled,among which 1204 were differentially expressed between normal and late *** ontology enrichment analysis revealed that biological processes were enriched with metabolic *** catalytic-related gene transcripts between the two types of blooming were significantly changed in the molecular *** Encyclopedia of Genes and Genomes pathway analysis showed that 156 genes were successfully annotated and 75 pathways *** for gibberellin biosynthesis were up-regulated in normal blooming,whereas abscisic acid degradation-related genes were also up-regulated in normal ***,circadian rhythms related genes including EARLY FLOWERING 4,LATE ELONGATED HYPOCOTYL and CIRCANDIAN CLOCK ASSOCIATED1 were all up-regulated in normal blooming,indicating that circadian rhythms have a very important role in controlling blooming ***,zinc finger protein CONSTANS-LIKE 12 was blasted onto the quantitative trait loci region on linkage group 4 in ***,changes in the abundance of key flowering genes such as SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1,FLOWERING LOCU T,LEAFY and FLOWERING LOCUS C were not significantly different,indicating that further investigation should explore the function of these genes on blooming *** outcomes of this study will provide a valuable platform for further research on the molecular mechanism of blooming date in Prunus.

关键词： Blooming date Differentially expressed genes(DEGs) Flowering time Siberian apricot Transcriptome

Petrogenesis and Geotectonic Significance of Early-Neoproterzoic Olivine-Gabbro within the Yangtze Craton: Constrains from the Mineral Composition, U-Pb Age and Hf Isotopes of Zircons

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Journal of Earth Science 2018年第1期29卷 93-102页

作者： Xingfu Jiang songbai Peng Timothy M.Kusky Lu wang Hao Deng School of Earth Sciences East China University of Technology School of Earth Sciences China University of Geosciences Center for Global Tectonics China University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Three Gorges Center for Geohazard Ministry of Education China University of Geosciences

The olivine-gabbroic rocks located at the Huangiing anticline within the Yangtze Craton are dated at circa 857-854 Ma by LA-ICP-MS method. The rocks belong to the sub-alkaline series and consist of pyroxene （35%-40%）, plagioclase （40% -45%）, olivine （8%-10%） and spinel （3%-5%）. Olivine has Fo values of 73-83 that is classified as chrysolite. Pyroxene has relative low contents of FeO （6.60 wt.%-8.23 wt.%） but high CaO （20.23 wt.%-21.25 wt.%） contents, however, plagioclase has high A1203 （31.78 wt.%o-32.37 wt.%）, CaO （16.08 wt.%-16.25 wt.%） and An （79-80） values, but low Na20 contents （1.95 wt.%-2.11 wt.%）. Spinel are magnesioferrite with characteristics of high contents of MgO （13.65 wt.%- 13.68 wt.%）, FeO （23.27 wt.%-23.40 wt.%） and A1203 （62.43 wt.%-62.74 wt.%）. Chemical compositions of these minerals are similar to those of gabbro rocks that were formed in the post-orogeny environment. The olivine-gabbro samples have negative zircon eHf values （-16.57±0.47） that resemble the mafic rocks in the same region, indicating that they are derived from the extremely enriched mantle source. On the compilation of documented Neoproterozoic mafic rocks in the Yangtze Craton, it is proposed that the mantle in the northern Yangtze Craton has experienced different degrees enrichment during the Neoproterozoic.

关键词： Neoproterozoic olivine-gabbro Huangling anticline post-orogeny environment Yangtze Craton.

Threshold of climate extremes that impact vegetation productivity over the Tibetan Plateau

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Science China Earth Sciences 2024年第6期67卷 1967-1977页

作者： Zhenggang PIAO Xiangyi LI Hao XU Kai wang Shuchang TANG Fei KAN songbai HONG College of Urban and Environmental Sciences Peking UniversityBeijing 100871China

Vegetation growth is adversely impacted by multiple climate extremes related to the water and thermal stress over the Tibetan Plateau(TP).However,it remains unknown at which stress level these climate extremes can trigger the abrupt shifts of vegetation response to climate extremes and result in the maximum vegetation response across *** fill this knowledge gap,we combined the hydrometeorological data and the satellite-derived vegetation index to detect two critical thresholds that determine the response of vegetation productivity to droughts,high-temperature extremes,and low-temperature extremes,respectively,during *** results show that the response of vegetation productivity to droughts rapidly increases once crossing -1.41±0.6 standard deviation(σ)below the normal conditions of soil *** crossing-2.98σ±0.9σ,vegetation productivity is maximum damaged by ***-temperature extremes,which have the two thresholds of 1.34σ±0.4σand 2.31σ±0.4σover TP,are suggested to trigger the strong response of vegetation productivity at a milder stress level than low-temperature extremes(two thresholds:-1.44σ±0.5σand-2.53σ±0.8σ).Moreover,we found the compounded effects of soil moisture deficit in reducing the threshold values of both high-and low-temperature *** on the derived thresholds of climate extremes that impact vegetation productivity,Earth System Models project that southwestern TP and part of the northeastern TP will become the hotspots with a high exposure risk to climate extremes by *** study deciphers the high-impact extreme climates using two important thresholds across TP,which advances the understanding of the vegetation response to different climate extremes and provides a paradigm for assessing the impacts of climate extremes on regional ecosystems.

关键词： Tibetan Plateau Climate extremes Thresholds Vegetation productivity

Estimating New Cases Among Athletes During the Winter Olympics Based on a Dynamic Model—Beijing,China,February 2022

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China CDC weekly 2022年第30期4卷 660-664,I0005页

作者： Zonghao Zhang Xiaotong Huang Chuanqing Xu Xiaojing wang songbai Guo Department of Mathematics and Data Science Beijing University of Civil Engineering and ArchitectureBeijingChina

Introduction:Since first appearing in late 2021,the Omicron variant has spread rapidly around the ***,the XXIV Winter Olympic Games(WOG)were held in Beijing in February 2022,which undoubtedly posed a huge challenge to domestic epidemic prevention and ***:To analyze and evaluate the spread of the epidemic within the closed-loop management of the Beijing 2022 WOG,an improved dynamics model was *** the known dynamics parameters,the new daily cases and final members of quarantined people were predicted,and the influence of different factors on the change of the number of quarantined people was ***:When the proportion of exposed persons being detected and the degree of admixture between the two populations varied between 0.5 and 0.9,there was little change in the daily predicted number of new cases and the final number of quarantined *** the initial value of the exposed among inbound personnel increases,the final size of quarantined patients increased ***:From the analysis results,detecting potential virus carriers at the entry stage is the most effective way to control the spread of the epidemic within the closed-loop management of the Beijing 2022 WOG.

关键词： doubt prevention Winter

Review and Comprehensive Analysis of Deaggregation and Separation Methods for Asphaltene Aggregates

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China Petroleum Processing & Petrochemical Technology 2020年第2期22卷 10-20页

作者： Cai Xinheng Long Jun Dong Ming wang Wei Hou Huandi Tian songbai SINOPEC Research Institute of Petroleum Processing Beijing 100083

Asphaltenes generally exist in the form of molecular aggregates in crude oil or in petroleum residues,and asphaltene aggregates can usually cause serious problems to oil exploitation,transportation,and *** deaggregation and separation of asphaltene aggregates is a premise and basis for molecular characterization and processing of heavy *** at the intermolecular interactions in asphaltene molecular aggregates,it has proposed and summarized that aspahltene aggregates can be subject to deaggregation by means of five approaches,including solvent diluting,removing active sites,moderate heating,ultrasonication and on-line molecular ***,asphaltenes can be further separated to narrow fractions for molecular-level research based on polarity difference,molecular size difference,acid-base properties,and reactivity difference.

关键词： asphaltene molecular aggregates deaggregation separation

Influence of Different Hydrocarbon Molecules on Physical Properties of Mineral Base Oils

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China Petroleum Processing & Petrochemical Technology 2017年第1期19卷 33-45页

作者： wang Weijun Long Jun He Yifeng Sun Hongwei Tian songbai Zheng Hui SINOPEC Research Institute of Petroleum Processing

Different kinds of base oils with different viscosity were analyzed in this paper, including eight mineral base oils, alkylnaphthalene and three synthetic PAO oils. The influence of different hydrocarbon molecules on physical properties of mineral base oils was investigated, such as density(d), kinematic viscosity(KV), viscosity index(VI), etc. Possible reasons for some inconsistent phenomena in data processing were also theoretically analyzed in detail. The refractive indexes(RI), d and molecular weight(M) decrease linearly with the increase of paraffinic content other than KV, which declines exponentially. There are no clear relationships between physical properties of base oils and naphthenic content while polycyclic alkanes show a strong correlation with M and KV. The influence of aromatics on physical properties of base oils is just the opposite of paraffin's. VI of the base oils with low aromatics content increases linearly as their paraffinic contents rise when their carbon numbers are approximately equal. However, base oils with high aromatics content follow an utterly different rule, in which VI declines dramatically linearly with the increase in polycyclic aromatic content, which is the essential reason why naphthenic base oils all have terrible viscosity-temperature characteristics while paraffinic base oils usually do not.

关键词： base oil hydrocarbon molecule physical property

The greenhouse gas budget for China's terrestrial ecosystems

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National Science Review 2023年第12期10卷 55-57页

作者： Xuhui wang Yuanyi Gao Kai wang Yuxing Sang Yilong wang Yuzhong Zhang songbai Hong Yao Zhang Wenping Yuan Institute of Carbon Neutrality Sino-French Institute for Earth System Science College of Urban and Environmental Sciences Peking University State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE) Institute of Tibetan Plateau ResearchChinese Academy of Sciences Key Laboratory of Coastal Environment and Resources of Zhejiang Province School of EngineeringWestlake University Institute of Advanced Technology Westlake Institute for Advanced Study School of Atmospheric Sciences Sun Yat-sen University

The increased atmospheric concentrations of greenhouse gases (GHGs,including CO2, CH4 and N2O) are unequivocally the major driving forces of climate warming [1]. These GHGs originate not only from the use of fossil fuels, but also from disturbances to and management of terrestrial *** evidence suggests that terrestrial ecosystems,

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Application of the modern ophiolite concept with special reference to Precambrian ophiolites

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Science China Earth Sciences 2011年第3期54卷 315-341页

作者： Timothy M. KUSKY wang Lu Yildirim DILEK Paul ROBINSON PENG songbai HUANG XuYa State Key Lab for Geological Processes and Mineral Resources Three Gorges Research Center for Geohazards Ministry of Education China University of Geosciences Wuhan 430074 China Department of Geology Miami University Oxford OH 45056 USA Department of Earth Sciences Dalhousie University Halifax Nova Scotia Canada

Much has been learned in the past 40 years about the great diversity of the internal structure and geochemical compositions of Phanerozoic ophiolites, indicating that these on-land fragments of ancient oceanic lithosphere formed in distinctly different tectonic settings during their igneous evolution. Recent studies in Archean and Proterozoic greenstone belts have shown that the Precambrian rock record may also include exposures of a diverse suite of ophiolite complexes as part of craton development in the early history of the Earth. We review the salient features of the Precambrian ophiolite record to highlight what has been learned about Precambrian oceanic spreading systems since the original Penrose definition of ophiolites in 1972. Some of the diagnostic, characteristic, typical, and rare aspects of ophiolites of all ages are presented in a table in order to help determine if tectonically deformed and metamophosed sequences in Precambrian shield areas may be considered as ophiolites. The results of this comparative study are important in that they enable researchers to more realistically characterize allochthonous mafic/ultramafic rock sequences as ophiolitic or non-ophiolitic. This approach is more deterministic in contrast to some other arbitrary classification schemes requiring three or four of the Penrose-style ophiolitic units to be present in the Precambrian record for a specific rock sequence to be considered ophiolitic. Once these tectonic fragments are recognized as remnants of ancient oceanic lithosphere, great progress shall be made in understanding early Earth history. We discuss the significance and implications of the Precambrian ophiolite record to constrain the mode and nature of the plate tectonics that operated in deep time.

关键词： ophiolite Precambrian craton greenstone belt

Application of neutron imaging in observing various states of matter inside lithium batteries

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National Science Review 2023年第11期10卷 192-208页

作者： Lei Gao songbai Han Haijin Ni Jinlong Zhu Liping wang Song Gao Yonggang wang Dubin Huang Yusheng Zhao Ruqiang Zou School of Materials Science and Engineering Peking University Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology Department of Physics Southern University of Science and Technology Eastern Institute for Advanced Study

Lithium batteries have been essential technologies and become an integral part of our daily lives, powering a range of devices from phones to electric vehicles. To fully understand and optimize the performance of lithium batteries, it is necessary to investigate their internal states and processes through various characterization methods. Neutron imaging has been an indispensable complementary characterization technique to X-ray imaging or electron microscopy because of the unique interaction principle between neutrons and matter. It provides particular insights into the various states of matter inside lithium batteries,including the Li+concentration in solid electrodes, the Li plating/stripping behavior of Li-metal anodes,the Li+diffusion in solid ionic conductors, the distribution of liquid electrolytes and the generation of *** review aims to highlight the capabilities and advantages of neutron imaging in characterizing lithium batteries, as well as its current state of application in this field. Additionally, we discuss the potential of neutron imaging to contribute to the ongoing development of advanced batteries through its ability to visualize internal evolution.

关键词： lithium battery neutron imaging electrodes electrolytes