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| 1 | PM_(2.5) and PM_(10-2.5) chemical composition and source apportionment near a Hong Kong roadway显示文摘Twenty-four-hour PM_(2.5) and PM_(10) samples were collected simultaneously at a highly trafficked roadside site in Hong Kong every sixth day from October 2004 to September 2005.The mass concentrations of PM_(2.5),PM_(10-2.5)(defined as PM_(10)- PM_(2.5)),organic carbon(OC),elemental carbon(EC),water-soluble ions,and up to 25 elements were determined.Investigation of the chemical compositions and potential sources revealed distinct differences between PM_(2.5) and PM_(10-2.5).The annual average mass concentrations were 55.5±25.5 and 25.9±15.7 ug/m^3 for PM_(2.5) and PM_(10-2.5),respectively.EC,OM(OM =OC×1.4),and ammonium sulfate comprised over ~82% of PM_(2.5),accounting for^29%,~27%,and ~25%,respectively,of the PM_(2.5) mass.Low OC/EC ratios(less than 1) for PM_(2.5) suggested that fresh diesel-engine exhaust was a major contributor.Seven sources were resolved for PM_(2.5) by positive matrix factorization(PMF) model,including vehicle emissions(~29%),secondary inorganic aerosols(~27%),waste incinerator/biomass burning(~23%),residual oil combustion(~10%),marine aerosols(~6%),industrial exhaust(~4%),and resuspended road dust(~1%).EC and OM comprised only ~19%of PM_(10-2.5).The average OC/EC ratio of PM_(10-2.5) was 7.8±14.2,suggesting that sources other than vehicular exhaust were important contributors.The sources for PM_(10-2.5) determined by the PMF model included ~20%traffic-generated resuspension(e.g.,tire dust/brake linear/petrol evaporation),~17% locally resuspended road dust,~17% marine aerosols,~12% secondary aerosols/field burning,and ~11%vehicle emissions. | Yan Cheng Shuncheng Lee Zhaolin Gu Kinfai Ho Yunwei Zhang Yu Huang Judith C.Chow John G.Watson Junji Cao Renjian Zhang | 2015 | Particuology2015，13，1： | 14 |
| 2 | Viscoelastic plate-fluid interactive vibration and liquid sloshing suppression显示文摘 | Wang Zhaolin Quan Bin Cheng Xuduo | 1990 | Acta Mechanica Sinica1990，，3： | 1 |
| 3 | Singular LQ problem for nonregular descriptor systems显示文摘 | Zhu Jiandong Ma Shuping Cheng Zhaolin | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 4 | Singular LQ problem for nonregular descriptor systems显示文摘 | Jiandong Zhu Shuping Ma Zhaolin Cheng | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 5 | Viscoelastic plate-fluid interactive vibration and liquid sloshing suppression显示文摘 | Wang Zhaolin Quan Bin Cheng Xuduo | 1990 | Acta Mechanica Sinica1990，，3： | 1 |
| 6 | Measurements of displacement and trapping force on micron-sized particles in optical tweezers system显示文摘 | Honglian Guo Xincheng Yao Zhaolin Li Bingying Cheng Xuehai Han Daozhong Zhang | 2002 | Science in China Series A: Mathematics2002，，7： | 1 |
| 7 | Singular LQ problem for nonregular descriptor systems显示文摘 | Jiandong Zhu Shuping Ma Zhaolin Cheng | 2002 | IEEE Transactions on Automatic Control2002，47，7： | 1 |
| 8 | Novel method for the evaluation of data quality based on fuzzy control显示文摘One of the goals of data collection is preparing for decision-making, so high quality requirement must be satisfied. Rational evaluation of data quality is an effective way to identify data problem in time, and the quality of data after this evaluation is satisfactory with the requirement of decision maker. A fuzzy neural network based research method of data quality evaluation is proposed. First, the criteria for the evaluation of data quality are selected to construct the fuzzy sets of evaluating grades, and then by using the learning ability of NN, the objective evaluation of membership is carried out, which can be used for the effective evaluation of data quality. This research has been used in the platform of 'data report of national compulsory education outlay guarantee' from the Chinese Ministry of Education. This method can be used for the effective evaluation of data quality worldwide, and the data quality situation can be found out more completely, objectively, and in better time by using the method. | Ban Xiaojuan Ning Shurong Xu Zhaolin Cheng Peng | 2008 | Journal of Systems Engineering and Electronics2008，19，3： | 1 |
| 9 | Delay dependent robust stability criteria for two classes of uncertain singular time delay systems显示文摘 | Zhu Shuqian Zhang Chenghui Cheng Zhaolin | 2007 | IEEE Trans on Automatic Control2007，52，4： | 1 |
| 10 | Stimulated Emission Originated from Collision of Long Life Zn显示文摘Under the resonant excitation of Zn atomic 4p^(3)P_(1) state a strong stimulated emission at 481.0nm is produced,which corresponds to the transition between 5s^(3)S_(1) and 4p^(3)P_(2) of Zn.If N_(2) molecular gas is used as buffer gas instead of rare gas He or Ar,the stimulated emission may be enhanced by several orders of magnitude.The dependences of intensity on density of atomic Zn and N_(2) pressure are studied experimentally.The mechanism which causes population inversion is propased. | LI Zhaolin CHENG Bingying ZHU Junkong ZHANG Daozhong | 1992 | Chinese Physics Letters1992，9，11： | 0 |
| 11 | Emission Spectrum of Zn_(2) Excimers显示文摘Under laser excitation of vaporized zinc to 4s4p ^(3)P^(0)_(1) metastable level,the emission bands at violet and ultraviolet ranges were observed.The radiative decay time of 20 ns has been measured for both bands.The temporal behavior and excitation condition indicate that they are possibly from the same state 3Σ^(+)_(u) of Zn_(2) molecule.The wavelength range of the two bands coincides with theoretical predication. | YANG Yongwu CHENG Bingying LI Zhaolin NIE Qingxiang ZHANG Daozhong | 1991 | Chinese Physics Letters1991，8，3： | 0 |
| 12 | Crystal structure and catalytic mechanism of the MbnBC holoenzyme required for methanobactin biosynthesis显示文摘Methanobactins(Mbns)are a family of copper binding peptides involved in copper uptake by methanotrophs,and are potential therapeutic agents for treating diseases characterized by disordered copper accumulation.Mbns are produced via modification of MbnA precursor peptides at cysteine residues catalyzed by the core biosynthetic machinery containing MbnB,an iron-dependent enzyme,and MbnC.However,mechanistic details underlying the catalysis of the MbnBC holoenzyme remain unclear.Here,we present crystal structures of MbnABC complexes from two distinct species,revealing that the leader peptide of the substrate MbnA binds MbnC for recruitment of the MbnBC holoenzyme,while the core peptide of MbnA resides in the catalytic cavity created by the MbnB-MbnC interaction which harbors a unique tri-iron cluster.Ligation of the substrate sulfhydryl group to the tri-iron center achieves a dioxygen-dependent reaction for oxazolone thioamide installation.Structural analysis of the MbnABC complexes together with functional investigation of MbnB variants identifed a conserved catalytic aspartate residue as a general base required for MbnBC-mediated MbnA modifcation.Together,our study reveals the similar architecture and function of MbnBC complexes from different species,demonstrating an evolutionarily conserved catalytic mechanism of the MbnBC holoenzymes. | Chao Dou Zhaolin Long Shoujie Li Dan Zhou Ying Jin Li Zhang Xuan Zhang Yanhui Zheng Lin Li Xiaofeng Zhu Zheng Liu Siyu He Weizhu Yan Lulu Yang Jie Xiong Xianghui Fu Shiqian Qi Haiyan Ren She Chen Lunzhi Dai Binju Wang Wei Cheng | 2022 | Cell Research2022，32，3： | 0 |
| 13 | H-infinity output feedback control for descriptor systems with delayed states显示文摘This paper considers the H_infinity dynamic output feedback control for descriptor systems with delay in states. The controller is a descriptor system without delay. Several equivalent sufficient conditions for the existence of one descriptor dynamic controller without impulsive models are given. Furthermore the explicit expression of the desired controller is obtained. The detailed design of the controller is presented using the cone complementarity linearization iterative algorithm and the LMI method . A numerical example is shown to illustrate the designed method. | Jun' e FENG Peng CUI Zhaolin CHENG | 2005 | 控制理论与应用(英文版)2005，3，4： | 0 |
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