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| 1 | Continuous and comprehensive atmospheric observations in Beijing:a station to understand the complex urban atmospheric environment显示文摘Due to profound impact on climate and human health,air quality has attracted attention from all levels of the civil society.The key step in the provision of required tools for the society to tackle the complex air quality problem is to characterize it in a comprehensive manner with a long-term perspective.Here,we describe a continuous and comprehensive observation station and its accompanying state-ofthe-art instrumentation that was established to investigate the complex urban atmospheric environment in a rapidly developing Chinese Megacity.The station,located in downtown Beijing,aims to study air quality by identifying the major atmospheric pollutants and key processes determining their formation and loss mechanisms.A few hundreds of parameters are continuously measured with the state-of-the-art instruments,including trace gas concentrations,aerosol particle size distributions,and mass concentrations,covering aerosol particle chemical composition from molecules to micrometer-sized aerosol particles.This produced long-term,comprehensive big data with around 1�10^(11)bytes per year.In this paper,we provide an overview on the facilities of the station,the instrumentation used,the workflow of continuous observations and examples of results from 2018 to 2019 and a basis for establishing a modern long-term,comprehensive atmospheric urban observation station in other megacities. | Yongchun Liu Chao Yan Zemin Feng Feixue Zheng Xiaolong Fan Yusheng Zhang Chang Li Ying Zhou Zhuohui Lin Yishou Guo Ying Zhang Li Ma Wenshuo Zhou Zhikun Liu Lubna Dada Kaspar Dallenbach Jenni Kontkanen Runlong Cai Tommy Chan Biwu Chu Wei Du Lei Yao Yonghong Wang Jing Cai Juha Kangasluoma Tom Kokkonen Joni Kujansuu Anton Rusanen Chenjuan Deng Yueyun Fu Rujing Yin Xiaoxiao Li Yiqun Lu Yiliang Liu Chaofan Lian Dongsen Yang Weigang Wang Maofa Ge Yuesi Wang Douglas R.Worsnop Heikki Junninen Hong He Veli-Matti Kerminen Jun Zheng Lin Wang Jingkun Jiang Tuukka Petaja Federico Bianchi Markku Kulmala | 2020 | Big Earth Data2020，4，3： | 3 |
| 2 | Age, Growth and Maturation of Largehead Hairtail (Trichiurus japonicus) in the East China Sea显示文摘Largehead hairtail(Trichiurus japonicus)is a commercially important fish species in China Seas,characterized by wide distribution,seasonal migration,spawning all year round.Under long-term high fishing pressure,the biological traits of largehead hair-tail have changed,such as miniaturization,smaller size-at-age and earlier age-at-maturation.To explore its current biological charac-ters,we analyzed age,growth and maturation of largehead hairtail in the East China Sea by analyzing the otolith microstructure and gonads.The results showed that largehead hairtail is mainly composed of 1 year and 2 years old individuals.The estimated von Ber-talanffy growth function(VBGF)showed significant differences between sexes,and asymptotic pre-anal length of male is longer than that of female.Two spawning seasons were observed in spring and autumn by monthly gonadosomatic index(GSI).Compared to historic survey data,the average pre-anal length at age decreased and size-at-maturation became smaller in the East China Sea.This study updates life history parameters of largehead hairtail,and provides a reference for the present status of largehead hairtail,which can contribute to largehead haritail stock assessment and sustainable utilization in the China Seas. | CHENG Shuo SUN Peng LIU Yang CHEN Qi SHI Zhengtong SUN Runlong | 2022 | Journal of Ocean University of China2022，21，5： | 2 |
| 3 | Accurate reconstruction of soft X-ray energy spectrum in detector response matrix显示文摘In this paper, we report the design of a Monte Carlo simulation for the energy spectrum measurement system based on the ladderabsorption method. Herein, the detector response matrix can be calculated using the detector responses to several monochromatic X-ray beams. A novel soft X-ray spectrum unfolding method based on the two-step reverse iteration(TSRI) algorithm is applied to acquire the primary spectrum. This paper provides examples of the use of TSRI, and the unfolded energy spectra for the soft Xray beams show excellent agreement with the references. The unfolded energy spectra obtained using the TSRI exhibit better accuracy than those obtained from the commonly used unfolding code GRAVEL. | RunLong Gao Yang Liu XiaoPing Ouyang Jing Chen Xiao Ouyang | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，12： | 2 |
| 4 | A review of geoanalytical databases显示文摘Geoanalytical data provide fundamental information according to which the Earth's resources can be known and exploited to support human life and development.Large amounts of manpower and material and financial resources have been invested to acquire a wealth of geoanalytical data over the past 40 years.However,these data are usually managed by individual researchers and are preserved in an ad hoc manner without metadata that provide the necessary context for interpretation and data integration requirements.In this scenario,fewer data,except for published data,can be reutilized by geological researchers.Many geoanalytical databases have been constructed to collect existing data and to facilitate their use.These databases are useful tools for preserving,managing,and sharing data for geological research,and provide various data repositories to support geological studies.Since these databases are dispersed and diverse,it is difficult for researchers to make full use of them.This contribution provides an introduction on available geoanalytical databases.The database content can be made accessible to researchers,the ways in which this can be done,and the functionalities that can be used are illustrated in detail.Moreover,constraints that have limited the reutilization of geoanalytical data and creation of more advanced geoanalytical databases are discussed. | Yutong He Yang Bai Di Tian Li Yao Runlong Fan Pengfei Chen | 2019 | Acta Geochimica2019，38，5： | 0 |
| 5 | A conductive anionic Co-MOF cage with zeolite framework for supercapacitors显示文摘Conductive MOFs could exhibit full potential as integrated electrode materials for supercapacitors without interference from additional conductive additives.Here we report an anionic Co-MOF cage with zeolite framework,which was balanced by the redox-active guest [Co(H2O)6]2+ and protonated[(CH3)2NH2]2+ ions.Benefit from the unique ion skeleton structure,Co-MOF exhibits a conductivity higher than most of reported MOFs with the value of 1.42 × 10^-3 S/cm,which can be directly fabricated as electrode for supercapacitors.A maximum specific capacitance of 236.2 F/g can be achieved at a current density of 1 A/g of Co-MOF.Additionally,the electric performance and morphology of this Co-MOF can be modified by cetyltrimethylammonium bromide(CTAB) and the maximum specific capacitance could increase up to 334 F/g at 1 A/g when the ratio of ligand and CTAB is 1:6(Co-MOF-6).Furthermore,the specific capacitance can retain at 64.04% and 77.92% of the initial value after 3000 cycles of Co-MOF and Co-CTAB-6,respectively.Obviously,the addition of CTAB further improves both capacitance and cycle stability. | Wei Du Yue-Ling Bai Zhen Yang Runlong Li Dan Zhang Zhiheng Ma Anbao Yuan Jiaqiang Xu | 2020 | Chinese Chemical Letters2020，31，9： | 0 |
| 6 | TRAVELING WAVES FOR A NONLOCAL DISPERSAL EPIDEMIC MODEL显示文摘This paper is concerned with traveling wave solutions to a nonlocal dispersal epidemic model.Combining the upper and lower solutions and monotone iteration method,we establish the existence of nondecreasing traveling wave fronts for the speed being larger than the critical one.Furthermore,by the approximation method,the existence of traveUng wave fronts for the critical speed is estabUshed as weU.Finally,we discuss the nonexistence of traveling wave fronts for the speed being smaller than critical one by Laplace transform. | Feiying Yang Runlong Qiao Wantong Li | 2014 | Annals of Differential Equations2014，30，2： | 0 |
| 7 | Visible Light-Induced C-5 Selective C-H Radical Borylation of Imidazo[1,2-a]pyridines with NHC-Boranes显示文摘A visible-light-induced C-5 selective C-H borylation of imidazo[1,2-a]pyridines with NHC-BH3 via Minisci-type radical borylation re-action has been developed for the first time.The present sustainable protocol provides a new family of regioselectively C5-borylated imidazopyridines that would otherwise be difficult to prepare.It is a supplement to site-selective borylation of azines(nitrogen-con-taining aromatic heterocycles)and the assembly of sp2 carbon-boron bond. | Huitao Zheng Hao Lu Chaobo Su Runlong Yang Limin Zhao Xiang Liu Hua Cao | 2023 | Chinese Journal of Chemistry2023，41，2： | 0 |
| 8 | The missing base molecules in atmospheric acid–base nucleation显示文摘Transformation of low-volatility gaseous precursors to new particles affects aerosol number concentration,cloud formation and hence the climate.The clustering of acid and base molecules is a major mechanism driving fast nucleation and initial growth of new particles in the atmosphere.However,the acid–base cluster composition,measured using state-of-the-art mass spectrometers,cannot explain the measured high formation rate of new particles.Here we present strong evidence for the existence of base molecules such as amines in the smallest atmospheric sulfuric acid clusters prior to their detection by mass spectrometers.We demonstrate that forming(H_(2)SO_(4))1(amine)1 is the rate-limiting step in atmospheric H_(2)SO_(4)-amine nucleation and the uptake of(H_(2)SO_(4))1(amine)1 is a major pathway for the initial growth of H_(2)SO_(4)clusters.The proposed mechanism is very consistent with measured new particle formation in urban Beijing,in which dimethylamine is the key base for H_(2)SO_(4)nucleation while other bases such as ammonia may contribute to the growth of larger clusters.Our findings further underline the fact that strong amines,even at low concentrations and when undetected in the smallest clusters,can be crucial to particle formation in the planetary boundary layer. | Runlong Cai Rujing Yin Chao Yan Dongsen Yang Chenjuan Deng Lubna Dada Juha Kangasluoma Jenni Kontkanen Roope Halonen Yan Ma Xiuhui Zhang Pauli Paasonen Tuukka Petaja Veli-Matti Kerminen Yongchun Liu Federico Bianchi Jun Zheng Lin Wang Jiming Hao James N.Smith Neil M.Donahue Markku Kulmala Douglas R.Worsnop Jingkun Jiang | 2022 | National Science Review2022，9，10： | 0 |
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