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1Investigating the Transport Mechanism of PM2.5 Pollution during January 2014 in Wuhan, Central China显示文摘Severe haze pollution that occurred in January 2014 in Wuhan was investigated. The factors leading to Wuhan’s PM2.5 pollution and the characteristics and formation mechanism were found to be significantly different from other megacities, like Beijing. Both the growth rates and decline rates of PM2.5 concentrations in Wuhan were lower than those in Beijing, but the monthly PM2.5 value was approximately twice that in Beijing. Furthermore, the sharp increases of PM2.5 concentrations were often accompanied by strong winds. A high-precision modeling system with an online source-tagged method was established to explore the formation mechanism of five haze episodes. The long-range transport of the polluted air masses from the North China Plain (NCP) was the main factor leading to the sharp increases of PM2.5 concentrations in Wuhan, which contributed 53.4% of the monthly PM2.5 concentrations and 38.5% of polluted days. Furthermore, the change in meteorological conditions such as weakened winds and stable weather conditions led to the accumulation of air pollutants in Wuhan after the long-range transport. The contribution from Wuhan and surrounding cities to the PM2.5 concentrations was determined to be 67.4% during this period. Under the complex regional transport of pollutants from surrounding cities, the NCP, East China, and South China, the five episodes resulted in 30 haze days in Wuhan. The findings reveal important roles played by transregional and intercity transport in haze formation in Wuhan.Miaomiao LU Xiao TANG Zifa WANG Lin WU Xueshun CHEN Shengwen LIANG Hui ZHOU Huangjian WU Ke HU Longjiao SHEN Jia YU Jiang ZHU 2019Advances in Atmospheric Sciences2019,36,11:10
2Characteristic Analysis of OC and EC in PM_(2.5) of Typical Haze Weather in Wuhan City显示文摘Long-time large-area haze weather appeared in Wuhan on June 11,2012. It was monitored that PM2. 5hourly concentration obviously rose,and peak value reached 658 μg /m3. OC and PM2. 5presented high correlation,and correlation coefficient was 0. 96. OC daily average concentration occupied 10%-20% in PM2. 5,and difference was big between haze and normal weather. EC occupied 5%,and difference was very small between haze and normal weather. By analyzing change trend of OC/EC,it was found that OC/EC presented increasing trend in late May and was even higher than that during 11-15 June. It was clear that biomass combustion taking straw as the representation has started in late May.But two strong precipitation on May 29 and June 6 inhibited haze weather,and specific meteorological condition caused haze on June 11. Proportion of SOC to OC reached 14%-70%,illustrating that daily difference of secondary photochemical reaction was very big in Wuhan. OC/EC values were respectively 2. 7,3. 5 and 4. 2 in May,June and haze period. SOC daily means were respectively( 5. 33 ±4. 77) and( 32. 5 ±23. 4) μg /m3in May and haze period. Major pollution source of haze weather was biomass combustion,and haze occurrence had very big relationship with special meteorological condition.Zhong Zhangxiong Hu Ke Huang Zhen Yin Ting Shen Longjiao 2014Meteorological and Environmental Research2014,5,4:6
3Identification of a novel effector BxSapB3 that enhances the virulence of pine wood nematode Bursaphelenchus xylophilus显示文摘Pine wilt disease,caused by the pine wood nematode Bursaphelenchus xylophilus,leads to severe damage to pine forests in China.In our previous study,effectors secreted by this pathogen were shown to play roles in the different infection stages of pine w ilt disease,and a series of candidate effectors were predicted by transcriptom e sequencing.This study identified and characterized a novel effector,BxSapB3,which was among these candidate effectors.Agrobacterium-mediated transient expression was used to identify BxSapB3.BxSapB3 was secreted by B.xylop hilus and f.ound to be capable of inducing cell death in Nicotiana benthamiana.Quantitative real-time PCR(qRT-PCR)analysis revealed that BxSapB3 was upregulated in a highly virulent strain of B.xylophilus and expressed at lower levels in a weakly virulent strain at the early stages of infection.When BxSapB3 was silenced in B.xylophilus,the process of infection was delayed.These results indicate that BxSapB3 acts as an effector and contributes to virulence at the early stages of B.xylophilus infection.Xin Huang Longjiao Hu Xiaoqin Wu 2019Acta Biochimica et Biophysica Sinica2019,51,10:6
4Characterization and Clinical Application of Human CD34<sup>+</sup> Stem/Progenitor Cell Populations Mobilized into the Blood by Granulocyte Colony‐Stimulating Factor显示文摘Myrtle Y.Gordon Nata?aLevi?ar MadhavaPai PhilippeBachellier IoannisDimarakis FaisalAl‐Allaf HananeM’Hamdi TamaraThalji Jonathan P.Welsh Stephen B.Marley JohnDavies FrancescoDazzi FedericaMarelli‐Berg PaulTait RaymondPlayford LongJiao SteenJensen Joanna P. 2009STEM CELLS2009,,7:1
5An efficient colorimetfic biosensor for glucose based on peroxidase-like protein- Fe3 04 and glucose oxidase nanocomposites 显示文摘Liu Yon Yuan Min Qiao Longjiao 2014Biosens Bioelectron2014,52,:1
6Paper-based biosensors based on multiple recognition modes for visual detection of microbially contaminated food显示文摘Microbially contaminated food can cause serious health hazards and economic losses,therefore sensitive,rapid,and highly specific visual detection is called for.Traditional detection of microorganisms is complex and time-consuming,which cannot meet current testing demands.The emergence of paper-based biosensors provided an effective method for efficient and visual detection of microorganisms,due to its high speed,all-in-one device,low cost,and convenience.This review focused on 5 biomarkers,namely nucleic acids,proteins,lipopolysaccharides.metabolites,and the whole microorganism of microorganisms.Besides,the recognition methods were summed up in 5 forms,including immunological recognition,aptamer recognition,nucleic acid amplification-mediated recognition.DNAzyme recognition and clustered regularly interspaced short palindromic repeats mediated recognition.In addition,we summarized the applications of paper-based biosensors in the detection of microorganisms thoroughly.Through the exploration of different biomarkers,identification methods,and applications,we hope to provide a reference for the development of paper-based biosensors and their application in safeguarding the food chain.Jie Li Keren Chen Yuan Su Longjiao Zhu Hongxing Zhang Wentao Xu Xiangyang Li 2024Journal of Future Foods2024,4,1:0
7Interfacial synergistic effect in SnO_(2)/PtNi nanocrystals enclosed by high-index facets for high-efficiency ethylene glycol electrooxidation显示文摘Strengthening the oxide-metal interfacial synergistic interaction in nanocatalysts is identified as potential strategy to boost intrinsic activities and the availability of active sites by regulating the surface/interface environment of catalysts.Herein,the SnO_(2)/PtNi concave nanocubes(CNCs)enclosed by high-index facets(HIFs)with tunable SnO_(2)composition are successfully fabricated through combining the hydrothermal and self-assembly method.The interfacial interaction between ultrafine SnO_(2)nanoparticles and PtNi with HIFs surface structure is characterized by analytical techniques.The as-prepared 0.20%SnO_(2)/PtNi catalyst exhibits extraordinarily high catalytic performance for ethylene glycol electrooxidation(EGOR)in acidic conditions with specific activity of 3.06 mA/cm^(2),which represents 6.2-fold enhancement compared with the state-of-the-art Pt/C catalyst.Additionally,the kinetic study demonstrates that the strong interfacial interaction between SnO_(2)and PtNi not only degrades the activation energy barrier during the process of EGOR but also enhances the CO-resistance ability and long-term stability.This study provides a novel perspective to construct highly efficient and stable electrocatalysts for energy conversions.Shuna Li Haixiao Sun Jiaai Zhang Longjiao Zheng Yunrui Li Xu Fang Yujie Liu Qi Song Zhen Wang Yufeng Gao Xin Zhang Xiaoping Dai Yandi Cai Fei Gao 2022Nano Research2022,15,9:0
8Retrospective Analysis and Summary on Efficacy of Jianpi Shengxue Tablet in the Treatment of Iron Deficiency Anemia显示文摘[Objectives]The research aimed to make a retrospective analysis and summary on the efficacy of Jianpi Shengxue Tablet in the treatment of iron deficiency anemia.[Methods]A total of 200 patients with iron deficiency anemia who were treated at outpatient in Tongzhou District of Dongzhimen Hospital of Beijing University of Chinese Medicine from January 1,2017 to October 30,2020 were selected as the research objects.All these patients were given treatment with Jianpi Shengxue Tablet for the first time.Results of blood routine examination,serum iron concentration,total iron binding capacity and ferritin were compared before and after treatment at different dates.Subjective symptoms and adverse reactions were also described.Jianpi Shengxue Tablet was given orally after meals,3 tablets each time,3 times a day.[Results]Hemoglobin level was(83.58±15.81)g/L(M±SD,n=200)before treatment,and(103.40±12.60)g/L(n=74)after 2 week's treatment,with a 24.3%increase(P=0.0047).Hemoglobin concentration was(111.9±19.4)g/L(n=47)at the 4th week after treatment,which was near normality;(126.0±9.49)g/L(n=30)at the 6th week with complete normality and(130.7±7.95)g/L(n=23)at the 8th week.MCV,MCH and MCHC increased gradually after treatment.Serum total iron biding capacity decreased,while serum iron and ferritin increased gradually,and the three indexes were significantly different at the 4th week after treatment as compared with those before treatment(P﹤0.01).Subjective symptoms were improved in the 1st week from starting treatment among all the cases.The adverse events were mainly gastrointestinal irritation,occurring in 7/200 cases(3.5%).[Conclusions]Jianpi Shengxue Tablet is quite effective and safe in the treatment of iron deficiency anemia,with rapid comprehensive improvement of anemia-related symptoms and increase of hemoglobin and red blood cell parameters.Jinqing LI Longjiao CONG Muchen LI Chongluan SHI Wenlan LIU Wenjuan WANG Naidong HU 2021Medicinal Plant2021,12,5:0
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