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| 1 | Toluene decomposition performance and NOx by-product formation during a DBD-catalyst process显示文摘Characteristics of toluene decomposition and formation of nitrogen oxide(NOx) by-products were investigated in a dielectric barrier discharge(DBD) reactor with/without catalyst at room temperature and atmospheric pressure. Four kinds of metal oxides, i.e., manganese oxide(Mn Ox), iron oxide(Fe Ox), cobalt oxide(Co Ox) and copper oxide(Cu O), supported on Al2O3/nickel foam, were used as catalysts. It was found that introducing catalysts could improve toluene removal efficiency, promote decomposition of by-product ozone and enhance CO2 selectivity. In addition, NOx was suppressed with the decrease of specific energy density(SED) and the increase of humidity, gas flow rate and toluene concentration, or catalyst introduction. Among the four kinds of catalysts, the Cu O catalyst showed the best performance in NOx suppression. The Mn Ox catalyst exhibited the lowest concentration of O3 and highest CO2 selectivity but the highest concentration of NOx. A possible pathway for NOx production in DBD was discussed. The contributions of oxygen active species and hydroxyl radicals are dominant in NOx suppression. | Yufang Guo Xiaobin Liao Mingli Fu Haibao Huang Daiqi Ye | 2015 | Journal of Environmental Sciences2015，27，2： | 7 |
| 2 | AntarcticaLC2000:The new Antarctic land cover database for the year 2000显示文摘Antarctica plays a key role in global energy balance and sea level change.It has been conventionally viewed as a whole ice body with high albedo in General Circulation Models or Regional Climate Models and the differences of land cover has usually been overlooked.Land cover in Antarctica is one of the most important drivers of changes in the Earth system.Detailed land cover information over the Antarctic region is necessary as spatial resolution improves in land process models.However,there is a lack of complete Antarctic land cover dataset derived from a consistent data source.To fill this data gap,we have produced a database named Antarctic Land Cover Database for the Year 2000(AntarcticaLC2000) using Landsat Enhanced Thematic Mapper Plus(ETM+) data acquired around 2000 and Moderate Resolution Imaging Spectrometer(MODIS) images acquired in the austral summer of 2003/2004 according to the criteria for the 1:100000-scale.Three land cover types were included in this map,separately,ice-free rocks,blue ice,and snow/firn.This classification legend was determined based on a review of the land cover systems in Antarctica(LCCSA) and an analysis of different land surface types and the potential of satellite data.Image classification was conducted through a combined usage of computer-aided and manual interpretation methods.A total of 4067 validation sample units were collected through visual interpretation in a stratified random sampling manner.An overall accuracy of 92.3%and the Kappa coefficient of 0.836 were achieved.Results show that the areas and percentages of ice-free rocks,blue ice,and snow/firn are 73268.81 km2(0.537%),225937.26 km2(1.656%),and 13345460.41 km2(97.807%),respectively.The comparisons with other different data proved a higher accuracy of our product and a more advantageous data quality.These indicate that AntarcticaLC2000,the new land cover dataset for Antarctica entirely derived from satellite data,is a reliable product for a broad spectrum of applications. | HUI FengMing KANG Jing LIU Yan CHENG Xiao GONG Peng WANG Fang LI Zhan YE YuFang GUO ZiQi | 2017 | Science China Earth Sciences2017，60，4： | 5 |
| 3 | Detection of hydroxyl radical in plasma reaction on toluene removal显示文摘A new method was introduced to detect the concentration of OH radical in dielectric barrier discharge(DBD)reaction.A film, which was impregnated with salicylic acid,was used to detect OH radical in plasma reaction at room temperature and atmospheric pressure.Salicylic acid reacts with OH radical and produces 2,5-dihydroxybenzoic acid(2,5-DHBA).Then,a high performance liquid chromatography(HPLC)was carried out to detect the concentration of 2,5-DHBA.Therefore,OH radical in nonthermal plasma reaction could be calculated.In this plasma reaction,the applied voltage was controlled at 10 kV,the initial concentration of toluene was 400 mg/m3,and the gas flow rate was 300 ml/min.It was observed that when the film was placed away from the plasma area,2,5-DHBA could not be detected by HPLC,although the sampling time lasted for 48 h.On the other hand,when the film was placed in the plasma area and the sampling time being too long(>4 h),the concentration of 2,5-DHBA was also below detection limit,and it could not be detected by HPLC.However,when the film was placed in the plasma reaction field with the sampling time being 3 h,the concentration of OH radical was calculated to be 10.54×1012 cm-3.In addition,concentration of OH radical was investigated under different humidity,such as 0.2%,0.4%,0.6%,0.8%,and 1.0%.The results showed that the amount of OH radical stayed at order of magnitude of 1012 cm-3 and increased with the increase of humidity. | Guo Yufang Liao Xiaobin Ye Daiqi | 2008 | Journal of Environmental Sciences2008，20，12： | 5 |
| 4 | An improved Landsat Image Mosaic of Antarctica显示文摘A revised Landsat Image Mosaic of Antarctica (LIMA) is presented, using the 1073 multi-band scenes of the original Landsat-7 ETM+ LIMA image collection available at the United States Geological Survey (USGS: http://gffzza64998f73d704ee0hw9vqqfkbofpv6p0n.ffgz.tsg.suse.edu.cn/). Three improvements have been applied during the data processing: (1) DN saturation is adjusted by adopting a linear regression, which has a lower root mean square error than the ratio regression used by LIMA; (2) solar elevation angle is calculated using pixel-level latitude/longitude and the acquisition time and date of the central pixel of the scene, improving slightly upon the bilinear interpolation of the solar elevation angles of scene corners applied in LIMA; and (3) two additional image bands, Band 5 and Band 7, are sharpened using the panchromatic band (Band 8) and a Gram-Schmidt Spectral Sharpening algorithm to more easily distinguish snow, cloud and exposed rocks. The final planetary reflectance product is stored in 16-bit bands to preserve the full radiometric content of the scenes. A comparative statistical analysis among 12 sample regions indicates that the new mosaic has enhanced visual qualities, information entropy, and information content for land cover classification relative to LIMA. | HUI FengMing CHENG Xiao LIU Yan ZHANG YanMei YE YuFang WANG XianWei LI Zhan WANG Kun ZHAN ZhiFei GUO JianHong HUANG HuaBing LI XiuHong GUO ZiQi GONG Peng | 2013 | Science China Earth Sciences2013，56，1： | 4 |
| 5 | Enhancement of potassium resistance of Ce-Ti oxide catalyst for NH_(3)-SCR reaction by modification with holmium显示文摘Alkali metal K in exhaust gas has a deactivation effect on NH_(3)-SCR catalysts.In this work,it is discovered that the addition of Ho on CeTi catalyst can remarkably strengthen its K tolerance.The conclusions of Brunauer-Emmett-Teller(BET),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),NH_(3) temperature programmed desorption(NH_(3)-TPD)and H_(2)temperature programmed reduction(H_(2)-TPR)analyses demonstrate that the enhancement of K resistance mainly originates from its stronger surface acidity and redox capability,the higher concentration of Ce^(3+)species and surface chemisorbed oxygen.In situ DRIFT analysis reveals that the introduction of Ho on CeTi can remarkably improve the adsorption of NH_(3) and NO_(x) species on catalyst surface,accompanied by the intensified reactivity of ad-NH_(3) species,which should also administer to improve the K resistance. | Chaopeng Duan Ruitang Guo Yuanzhen Liu Guilin Wu Yufang Miao Jingwen Gu Weiguo Pan | 2022 | Journal of Rare Earths2022，40，1： | 3 |
| 6 | The prevalence of thyroid nodules and its relationship with metabolic parameters in a Chinese community-based population aged over 40 years显示文摘 | Hongwei Guo Min Sun Wei He Huanhuan Chen Wen Li Jinmei Tang Wei Tang Jieli Lu Yufang Bi Guang Ning Tao Yang Yu Duan | 2014 | Endocrine2014，，： | 2 |
| 7 | Zirconium-Induced Softening in Hyperstoichiometric Ni_3Al显示文摘The room temperature compressive properties and microhardness of Ni3Al alloys doped with Zr were studied. For the hypostoichiometric Ni3Al alloys, the compressive strength and microhardness increased with an increase in Zr content, while softening behavior induced by doping with a certain amount of Zr was observed in hyperstoichiometric Ni3Al alloy. Possible mechanisms for the softening effect were suggested. | Yufang LI, Jianting GUO and Hengqiang YE Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | 2005 | Journal of Materials Science & Technology2005，21，2： | 2 |
| 8 | Production of human lysozyme-transgenic cloned porcine embryos by somatic nuclear transfer显示文摘Due to their physiology and organ size, pigs have significant potential as human disease models and as organ transplantation donors. Genetic modification of pigs could provide benefits for both agriculture and human medicine. In this study, five fetal pig fibroblast cell lines from two species (Wuzhishan and Landrace pigs) were transfected using double-marked human lysozyme (HLY) plasmids (pBC1-HLY-GFP-NEO) by a liposome-mediated method. The ratio of green fluorescent protein (GFP)-expressing cells was >95% in sw7, sw8, slw3 and slw6 cell lines, but only 49.3% in slw9 cells. Cells from the four highly transgenic lines were used as nuclear donors to construct embryos, which were then cultured after fusion and activation by electric stimulation. The rate of cleavage was 76.7%, 48 h after activation. After 7 days, 18.5% of cleaved eggs had developed to the blastocyst stage and 93.3% of blastocysts were GFP-positive. These results indicate that transgenic fetal pig flbroblast cell lines could be obtained by a liposome-mediated method, though the transfection efficiency varied between cell lines. Reconstructed embryos derived from transgenic cells could successfully develop into blastocysts, most of which were GFP-positive. | Qiuyan Li Hengxi Wei Ying Guo Yan Li Rui Zhao Yufang Ma Zhengquan Yu Bo Tang Lei Zhang Yunping Dai Ning Li | 2009 | Progress in Natural Science:Materials International2009，19，6： | 2 |
| 9 | Toluene decom-position using a wire-plate dielectric barrier discharge reactorwith manganese oxide catalyst in situ显示文摘 | GUO Yufang YE Daiqi CHEN Kefu | 2006 | Journal of Molecu-lar Catalysis A:Chemical2006，245，12： | 1 |
| 10 | Toluene decomposition using a wire-plate dielectric barrier discharge reactor with manganese oxide catalyst in situ 显示文摘 | Guo Yufang Ye Daiqi Chen Kefu | 2006 | Journal of Molecular Catalysis A: Chemical2006，245，12： | 1 |
| 11 | Some congruence on S(X)显示文摘 | GUO Yufang | 2000 | Southeast Asian Bulletin of Mathematics2000，24，： | 1 |
| 12 | Combination ofβ–elimination and liquid chromatography/quadrupole time–of–flight mass spectrometry for the determination of O–glycosylation sites显示文摘 | Zheng Yufang Guo Zhihong Cai Zongwei | 2009 | Talanta2009，78，35： | 1 |
| 13 | Genome-wide identification of quantitative trait loci for important plant and flower traits in petunia using a high-density linkage map and an interspecific recombinant inbred population derived from Petunia integrifolia and P.axillaris显示文摘Petunia is a very important flower in the global floriculture industry and has played a critical role as a model in plant genetic studies.Owing to limited genetic variability in commercial germplasm,development of novel petunia phenotypes and new varieties has become increasingly difficult.To enrich petunia germplasm and facilitate genetic improvement,it is important to explore genetic variation in progenitor species that may contain highly valuable genes/alleles.In this study,an interspecific recombinant inbred population(168 recombinant inbreds)derived from Petunia integrifolia×P.axillaris were phenotyped for days to anthesis(DTA),flower count(Flower_C),flower diameter(Flower_D),flower length(Flower_L),plant height(Plant_H),plant spread(Plant_S),and plant size(Plant_Z)in 2014 and 2015.Transgressive segregation was observed for all traits in both years.The broad-sense heritability on a 2-year basis varied from 0.38(Flower_C)to 0.82(Flower_L).Ten QTL were consistently identified in both years and by two mapping strategies[multiple QTL mapping(MQM)in MapQTL and inclusive composite interval mapping(ICIM)in IciMapping].Major QTL explained up to 30.2,35.5,and 47.1%of the total phenotypic variation for Plant_S,Flower_L,and Flower_D,respectively.These findings should be of significant values for introgression of desirable genes from wild petunias into commercial varieties and future genetic improvement of this important flower. | Zhe Cao Yufang Guo Qian Yang Yanhong He Mohammed I.Fetouh Ryan M.Warner Zhanao Deng | 2019 | Horticulture Research2019，6，1： | 1 |
| 14 | Reduction of nitroarenes to azoxybenzenes by NaOH-PEG 400 显示文摘 | Liu Yufang Liu Bo Guo Ailing | 2012 | Synthetic Communications2012，，42： | 1 |
| 15 | Some congruences on S(X)显示文摘 | PEI Huisheng GUO Yufang | 2000 | Southeast Asian Bulletin of Mathematics2000，24，： | 1 |
| 16 | Effect of manganese oxide catalyst on the dielectric barrier discharge decom- position of toluene 显示文摘 | GUO YUFANG LIAO XIAOBIN HE JIANHUA | 2010 | Catalysis Today2010，153，34： | 1 |
| 17 | Toluene decomposition using a wire-plate dielectric barrier discharge reactor with manganese oxide catalyst in situ 显示文摘 | Guo Yufang Ye Daiqi Chen Kefu | 2006 | Journal of Molecular Catalysis A : Chemical2006，245，12： | 1 |
| 18 | Highly selective oxidation of amines to imines by Mn2O3 catalyst under eco-friendly conditions显示文摘Enhancing the selectivity of imines for the oxidative self-coupling of primary amines was found to be challenging in the heterogeneous catalysis.Three different manganese oxides(M-3,M-4,M-5) were synthesized by controlling the calcination temperature using a simple template-free oxalate route.The prepared manganese oxides were systematically characterized using XRD,N2 sorption,SEM,TEM,XPS,H2-TPR techniques.M-4 gave 96.2% selectivity of imine at 100% conversion of benzylamine,which was far more superior than other existing protocols.Mn^3+/Mn^4+ ratio was found to affect the selectivity of the imines.The probable reaction pathway for amines oxidation catalyzed by manganese oxides was proposed for the first time. | Fushan Chen Tao Yang Songlin Zhao Taotao Jiang Lu Yu Houfeng Xiong Chuankun Guo Yufang Rao Yan Liu Liu Liu Jian Zhou Pengxiang Tu Jun Ni Qunfeng Zhang Xiaonian Li | 2019 | Chinese Chemical Letters2019，30，12： | 1 |
| 19 | Toluene removal by a DBD-type plasma combined with metal oxides catalysts supported by nickel foam显示文摘 | GUO Yufang YE Daiqi | 2007 | Catalysis Today2007，126，： | 1 |
| 20 | Toluene removal by a DBD-type plasma combined with metal oxides catalysts supported by nickel foam显示文摘 | Guo Yufang Ye Daiqi Chen Kefu | 2007 | Catalysis Today2007，126，34： | 1 |
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