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| 1 | Air pollution characteristics and their relationship with emissions and meteorology in the Yangtze River Delta region during 2014–2016显示文摘With rapid economic growth and urbanization, the Yangtze River Delta(YRD) region in China has experienced serious air pollution challenges. In this study, we analyzed the air pollution characteristics and their relationship with emissions and meteorology in the YRD region during 2014–2016. In recent years, the concentrations of all air pollutants, except O3,decreased. Spatially, the PM2.5, PM10, SO2, and CO concentrations were higher in the northern YRD region, and NO2 and O3 were higher in the central YRD region. Based on the number of non-attainment days(i.e., days with air quality index greater than 100), PM2.5 was the largest contributor to air pollution in the YRD region, followed by O3, PM10, and NO2.However, particulate matter pollution has declined gradually, while O3 pollution worsened.Meteorological conditions mainly influenced day-to-day variations in pollutant concentrations. PM2.5 concentration was inversely related to wind speed, while O3 concentration was positively correlated with temperature and negatively correlated with relative humidity.The air quality improvement in recent years was mainly attributed to emission reductions.During 2014–2016, PM2.5, PM10, SO2, NOx, CO, NH3, and volatile organic compound(VOC)emissions in the YRD region were reduced by 26.3%, 29.2%, 32.4%, 8.1%, 15.9%, 4.5%, and0.3%, respectively. Regional transport also contributed to the air pollution. During regional haze periods, pollutants from North China and East China aggravated the pollution in the YRD region. Our findings suggest that emission reduction and regional joint prevention and control helped to improve the air quality in the YRD region. | Tao Ma Fengkui Duan Kebin He Yu Qin Dan Tong Guannan Geng Xuyan Liu Hui Li Shuo Yang Siqi Ye Beiyao Xu Qiang Zhang Yongliang Ma | 2019 | Journal of Environmental Sciences2019，31，9： | 26 |
| 2 | Assimilation of MODIS-LAI into the WOFOST model for forecasting regional winter wheat yield显示文摘 | Guannan Ma Jianxi Huang Wenbin Wu Jinlong Fan Jinqiu Zou Sijie Wu | 2013 | Mathematical and Computer Modelling . 2013 (3-4)2013，，3： | 1 |
| 3 | Genomic Epidemiology of Carbapenemaseproducing Klebsiella pneumoniae in China显示文摘The rapid spread of carbapenemase-producing Klebsiella pneumoniae(cpKP)poses serious threats to public health;however,the underlying genetic basis for its dissemination is still unknown.We conducted a comprehensive genomic epidemiology analysis on 420 cpKP isolates collected from 70 hospitals in 24 provinces/autonomous regions/municipalities of China during 2009–2017 by short-/long-read sequencing.The results showed that most cpKP isolates were categorized into clonal group 258(CG258),in which ST11 was the dominant clone.Phylogenetic analysis revealed three major clades including the top one of Clade 3 for CG258 cpKP isolates.Additionally,carbapenemase gene analysis indicated that blaKPC was dominant in the cpKP isolates,and most blaKPC genes were located in five major incompatibility(Inc)groups of blaKPC-harboring plasmids.Importantly,three advantageous combinations of host–blaKPC-carrying plasmid(Clade 3.1+3.2–IncFIIpHN7A8,Clade 3.1+3.2–IncFIIpHN7A8:IncR,and Clade 3.3–IncFIIpHN7A8:IncpA1763-KPC)were identified to confer cpKP isolates the advantages in both genotypes(strong correlation/coevolution)and phenotypes(resistance/growth/competition)to facilitate the nationwide spread of ST11/CG258 cpKP.Intriguingly,Bayesian skyline analysis illustrated that the three advantageous combinations might be directly associated with the strong population expansion during 2007–2008 and subsequent maintenance of the population of ST11/CG258 cpKP after 2008.We then examined drug resistance profiles of these cpKP isolates and proposed combination treatment regimens for CG258/non-CG258 cpKP infections.Thus,the findings of our systematical analysis shed light on the molecular epidemiology and genetic basis for the dissemination of ST11/CG258 cpKP in China,and much emphasis should be given to the close monitoring of advantageous cpKP–plasmid combinations. | Cuidan Li Xiaoyuan Jiang Tingting Yang Yingjiao Ju Zhe Yin Liya Yue Guannan Ma Xuebing Wang Ying Jing Xinhua Luo Shuangshuang Li Xue Yang Fei Chen Dongsheng Zhou | 2022 | Genomics, Proteomics & Bioinformatics2022，20，6： | 1 |
| 4 | Accelerating Secondary Innovation through Organizational Learning: A Case Study and Theoretical Analysis显示文摘 | Xiaobo Wu Rufei Ma Guannan Xu | 2009 | Industry & Innovation (-)2009，，4： | 1 |
| 5 | A Highly Efficient, Blue‐Phosphorescent Device Based on a Wide‐Bandgap Host/FIrpic: Rational Design of the Carbazole and Phosphine Oxide Moieties on Tetraphenylsilane显示文摘 | He Liu Gang Cheng Dehua Hu Fangzhong Shen Ying Lv Guannan Sun Bing Yang Ping Lu Yuguang Ma | 2012 | Adv Funct Mater2012，，13： | 1 |
| 6 | Assimilation of MODIS-LAI into the WOFOST model for forecasting regional winter wheat yield显示文摘 | Guannan Ma Jianxi Huang Wenbin Wu Jinlong Fan Jinqiu Zou Sijie Wu | 2013 | Mathematical and Computer Modelling (-)2013，，3： | 1 |
| 7 | 200-nm long TiO_2 nanorod arrays for efficient solid-state Pb S quantum dot-sensitized solar cellsR显示文摘To ensure the infiltration of spiro-OMeTAD into the quantum dot-sensitized photoanode and to consider the limit of the hole diffusion length in the spiro-OMe TAD layer, a rutile TiO_2 nanorod array with a length of 200 nm, a diameter of 20 nm and an areal density of 720 μm^(-2) was successfully prepared using a hydrothermal method with an aqueous-grown solution of 38 m M titanium isopropoxide and 6 M hydrochloric acid at 170 °C for 75 min. Pb S quantum dots were deposited by a spin coating-assisted successive ionic layer adsorption and reaction(spin-SILAR), and all solid-state Pb S quantum dot-sensitized TiO_2 nanorod array solar cells were fabricated using spiro-OMe TAD as electrolytes. The results revealed that the average crystal size of Pb S quantum dots was ~7.8 nm using Pb(NO_3)_2 as the lead source and remain unchanged with the increase of the number of spin-SILAR cycles. The all solid-state Pb S quantum dot-sensitized TiO_2 nanorod array solar cells with spin-SILAR cycle numbers of 20, 30 and 40 achieved the photoelectric conversion efficiencies of 3.74%, 4.12% and 3.11%, respectively, under AM 1.5 G illumination(100 m W/cm^2). | Zhengguo Zhang Chengwu Shi Kai Lv Chengfeng Ma Guannan Xiao Lingling Ni | 2018 | Journal of Energy Chemistry2018，27，4： | 1 |
| 8 | Accelerating Secondary Innovation through Organizational Learning: A Case Study and Theoretical Analysis 显示文摘 | Wu Xiaobo Ma Rufei Xu Guannan | 2009 | Industry & Innovation2009，16，4： | 1 |
| 9 | Effect of Yinlai Decoction on the metabolic pathways in the lung of high-calorie diet-induced pneumonia rats显示文摘Objective:To search for specific metabolites in the lungs of pneumonia rats fed with a high-calorie diet,as well as explore the changes in the lung metabolites of young rats treated with Yinlai Decoction(YD)and its effects on inflammation-related metabolic pathways.Methods:Lipopolysaccharides(LPS)and a special high-calorie diet were used to induce Sprague Dawley(SD)rats to simulate the intestinal state of infant pneumonia.Liquid chromatography-mass spectrometry technology(LC-MS/MS)was used to detect metabolites in each group.Supervised orthogonal partial least squares discriminant analysis(OPLS-DA)model values were used for the detection results to find the differential metabolites.The metabolic pathways that are involved with the differential metabolites were clarified through enrichment analysis and topological analysis.Finally,the T cell receptor signaling pathway(TCR)signal conversion was analyzed by the network pharmacology method.Results:In the high-calorie diet combined with pneumonia group(M3),a total of 55 metabolites were determined to be different from the normal group(N).A total of 36 metabolites were determined to be different from those in the lung metabolites of the YD treatment group(T1).YD had a regulatory effect on glutathione metabolism,arginine and proline metabolism,ascorbic acid and aldehyde metabolism and phenylalanine metabolism.And the small molecule metabolites could act on the FYN and lymphocytespecific protein tyrosine kinase(LCK)target proteins in the TCR signaling pathway,thereby affecting the immune function of the lungs.Conclusion:A high-calorie diet can cause abnormal sphingolipid metabolism in the lungs of young rats,thereby creating chronic lung inflammation in young rats.YD has a beneficial effect when used to treat young rats with LPS-induced pneumonia fed on high-calorie diets.Its mechanisms of action may affect the body’s immune pathways by regulating the oxidative stress pathway affected by glutathione metabolism. | Fuyang Xian Tiegang Liu Chen Bai Guannan Yang Xueyan Ma Bochuan Wang Ling Huang Shaoyang Liu Jianhua Zhen Jianzhen He He Yu Yuling Ma Taiyi Wang Xiaohong Gu | 2021 | Journal of Traditional Chinese Medical Sciences2021，8，1： | 1 |
| 10 | Synergetic roadmap of carbon neutrality and clean air for China显示文摘It is well recognized that carbon dioxide and air pollutants share similar emission sources so that synergetic policies on climate change mitigation and air pollution control can lead to remarkable co-benefits on greenhouse gas reduction,air quality improvement,and improved health.In the context of carbon peak,carbon neutrality,and clean air policies,this perspective tracks and analyzes the process of the synergetic governance of air pollution and climate change in China by developing and monitoring 18 indicators.The 18 indicators cover the following five aspects:air pollution and associated weather-climate conditions,progress in structural transition,sources,inks,and mitigation pathway of atmospheric composition,health impacts and benefits of coordinated control,and synergetic governance system and practices.By tracking the progress in each indicator,this perspective presents the major accomplishment of coordinated control,identifies the emerging challenges toward the synergetic governance,and provides policy recommendations for designing a synergetic roadmap of Carbon Neutrality and Clean Air for China. | Qiang Zhang Zhicong Yin Xi Lu Jicheng Gong Yu Lei Bofeng Cai Cilan Cai Qimin Chai Huopo Chen Hancheng Dai Zhanfeng Dong Guannan Geng Dabo Guan Jianlin Hu Cunrui Huang Jianing Kang Tiantian Li Wei Li Yongsheng Lin Jun Liu Xin Liu Zhu Liu Jinghui Ma Guofeng Shen Dan Tong Xuhui Wang Xuying Wang Zhili Wang Yang Xie Honglei Xu Tao Xue Bing Zhang Da Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Bo Zheng Yixuan Zheng Tong Zhu Jinnan Wang Kebin He | 2023 | Environmental Science and Ecotechnology2023，，4： | 0 |
| 11 | Formation of secondary inorganic aerosol in a frigid urban atmosphere显示文摘Formation of secondary inorganic aerosol(SIA)was investigated during a six-month long heating season in Harbin,China.Enhanced sulfate formation was observed at high relative humidity(RH),with the same threshold RH(80%)for both colder and warmer measurement periods.Compared to wintertime results from Beijing,the threshold RH was considerably higher in Harbin,whereas the RH-dependent enhancement of sulfur oxidation ratio(SOR)was less significant.In addition,the high RH events were rarely encountered,and for other periods,the SOR were typically as low as~0.1.Therefore,the sulfate formation was considered inefficient in this study.After excluding the several cases with high RH,both SOR and the nitrogen oxidation ratio(NOR)exhibited increasing trends as the temperature increased,with the increase of NOR being sharper.The nitrate to sulfate ratio tended to increase with increasing temperature as well.Based on a semi-quantitative approach,this trend was attributed primarily to the temperature-dependent variations of precursors including SO_(2) and NO_(2).The influence of biomass burning emissions on SIA formation was also evident.With stronger impact of biomass burning,an enhancement in NOR was observed whereas SOR was largely unchanged.The different patterns were identified as the dominant driver of the larger nitrate to sulfate ratios measured at higher concentrations of fine particulate matter. | Yuan Cheng Qinqin Yu Jiumeng Liu Youwen Sun Linlin Liang Zhenyu Du Guannan Geng Wanli Ma Hong Qi Qiang Zhang Kebin He | 2022 | Frontiers of Environmental Science & Engineering2022，16，2： | 0 |
| 12 | Revisiting the capacity-fading mechanism of P2-type sodium layered oxide cathode materials during high-voltage cycling显示文摘P2-type sodium layered oxide cathode (Na_(2/3)Ni_(1/3)Mn_(2/3)O_(2)P2-NNMO) has attracted great attention as a promising cathode material for sodium ion batteries because of its high specific capacity. However, this material suffers from a rapid capacity fade during high-voltage cycling. Several mechanisms have been proposed to explain the capacity fade, including intragranular fracture caused by the P2-O2 phase transion, surface structural change, and irreversible lattice oxygen release. Here we systematically investigated the morphological, structural, and chemical changes of P2-NNMO during high-voltage cycling using a variety of characterization techniques. It was found that the lattice distortion and crystal-plane buckling induced by the P2-O2 phase transition slowed down the Na-ion transport in the bulk and hindered the extraction of the Na ions. The sluggish kinetics was the main reason in reducing the accessible capacity while other interfacial degradation mechanisms played minor roles. Our results not only enabled a more complete understanding of the capacity-fading mechanism of P2-NNMO but also revealed the underlying correlations between lattice doping and the moderately improved cycle performance. | Meidan Jiang Guannan Qian Xiao-Zhen Liao Zhouhong Ren Qingyu Dong Dechao Meng Guijia Cui Siqi Yuan Sang-Jun Lee Tian Qin Xi Liu Yanbin Shen Yu-Shi He Liwei Chen Yijin Liu Linsen Li Zi-Feng Ma | 2022 | Journal of Energy Chemistry2022，31，6： | 0 |
| 13 | Effects of Salinity and Temperature on Bacterial Biodiversity in Hangu Solar Saltworks,China显示文摘1 Introduction The multi-pond solar saltworks inhabit diverse microbial groups in which a gradient of salinities range from seawater to Na Cl precipitation.Along the salinity gradient,the majority of microbial community | MA Guannan DENG Yuangao DONG Jinggang Gilbert VAN STAPPEN SUI Liying | 2014 | Acta Geologica Sinica(English Edition)2014，88，S1： | 0 |
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