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88篇 您的检索式:作者名="Yuqun"
    题名 作者 年代 出处 被引量
1Mercury Emission From Coal-fired Power Plants in China显示文摘燃煤是最大的人为汞排放源之一,燃煤电厂的汞排放控制问题也越来越为人们所关注。该文将目前公布的中国电厂的汞排放数据进行筛选汇总,得到18个电厂的汞排放数据,通过对比和分析,总结出了符合我国燃煤电厂特点的一般性汞排放规律。结果表明:与美国煤种相比,我国的燃煤具有低氯、高灰的特性,这不利于汞的排放控制;循环流化床燃烧可能会因燃尽率的不同而较煤粉炉燃烧易获得较高的Hgp;空气污染控制设备的使用能够有效地减少汞排放,选择性催化还原+静电除尘器/布袋除尘器+石灰石-石膏湿法脱硫(SCR+ESP/FF+WFGD)组合的平均脱汞率可达71.48%;SCR的大规模应用可能会将汞大量转移到飞灰和脱硫石膏中,带来二次污染的问题。YIN Libao ZHUO Yuqun XU Qisheng ZHU Zhenwu DU Wen AN Zhongyi 2013中国电机工程学报2013,33,29:29
2Corrosion Mechanism of Corrosion-Resistant Steel Developed for Bottom Plate of Cargo Oil Tanks显示文摘A new type of corrosion-resistant steel consisting of ferrite and bainite phases was developed for cargo oil tanks of crude oil tankers. The corrosion rate of this new steel was 0.22 mm/a, which was equivalent to ca. 1/5 of the criterion ( ≤ 1 mm/a) for corrosion-resistant steels. The composition and element distribution of the corrosion products were investigated by micro-Raman spectrometry and energy dispersive spectrometer. The results demonstrated that the corrosion product was composed of α-FeOOH, Fe3O4 and a continuous Cu enrichment layer. This kind of corrosion product was protective to the steel matrix and accounted for the enhancement of the corrosion resistance of the new developed steel.Feilong SUN Xiaogang LI Fan ZHANG Xuequn CHENG Cheng ZHOU Nianchun WU Yuqun YIN Jinbin ZHAO 2013Acta Metallurgica Sinica(English Letters)2013,26,3:9
3Fate of mercury in flue gas desulfurization gypsum determined by Temperature Programmed Decomposition and Sequential Chemical Extraction显示文摘A considerable amount of Hg is retained in flue gas desulfurization(FGD) gypsum from Wet Flue Gas Desulfurization(WFGD) systems. For this reason, it is important to determine the species of Hg in FGD gypsum not only to understand the mechanism of Hg removal by WFGD systems but also to determine the final fate of Hg when FGD gypsum is disposed. In this study, Temperature Programmed Decomposition(TPD) and Sequential Chemical Extraction(SCE) were applied to FGD gypsum to identify the Hg species in it. The FGD gypsum samples were collected from seven coal-fired power plants in China, with Hg concentrations ranging from 0.19 to 3.27 μg/g. A series of pure Hg compounds were used as reference materials in TPD experiments and the results revealed that the decomposition temperatures of different Hg compounds increase in the order of Hg_2Cl_2< HgCl_2< black HgS < Hg_2SO_4< red HgS < HgO < HgSO_4. The Hg compounds existing in FGD gypsums identified by TPD included HgCl_2, Hg_2Cl_2, Hg_2SO_4, black HgS and red HgS, of which mercury sulfides were the primary compounds. The results of SCE indicated that Hg was mainly distributed in the strongly complexed phase. The low Hg content in FGD gypsum increases the ambiguity of assigning extraction fractions to certain Hg species by SCE. The fact that the primary compounds in FGD gypsum are HgS phases leads the leaching of Hg in the natural environment to be quite low, but a considerable amount of Hg may be released during the industrial heating process.Zhenwu Zhu Yuqun Zhuo Yaming Fan Zhipeng Wang 2016Journal of Environmental Sciences2016,28,5:8
4A naturally occurring CD8^+CD122^+ T-cell subset as a memory-like Treg family显示文摘尽管有 CD4 + CD25 + 规章的 T 房间(Tregs ) 在过去的十年期间,在他们的临床的翻译以后的进步仍然保持停滞。增长证据建议那自然地发生的 CD8 + CD122 + T 房间也是有能力的 Tregs 禁止 T 房间回答并且象 alloimmunity 一样压制 autoimmunity。事实上,他们是像记忆的 Tregs 类似于一个中央记忆 T 房间(T 厘米 ) 显型。位于他们的抑制下面的机制仍然不好被理解,尽管他们可以包括 IL-10 生产。我们最近证明了那个规划 death-1 (PD-1 ) 表达式区分在之间规章并且存储器 CD8 + CD122 + T 房间和那 CD8 + CD122 + Tregs 经历更快的 homeostatic 增长并且比常规 CD4 + CD25 + Tregs。这些调查结果可以为在诊所加速有效 Treg 治疗打开调查的一根新线。在这评论,我们在 CD8 + CD122 + Treg 在诊所研究并且讨论他们的显型,在 autoimmunity 和 alloimmunity 的镇压角色,功能的要求,行动的机制和潜在的应用。Shanshan Li Qingfeng Xie Yuqun Zeng Chuan Zou Xusheng Liu Shouhai Wu Haixia Deng Yang Xu Xian C Li Zhenhua Dai 2014Cellular & Molecular Immunology2014,11,4:6
5Simulation of regional land subsidence in the southern Yangtze Delta显示文摘Investigation of the deformation characteristics of individual hydrostratigraphic units is the key to construct a regional land subsidence model. All of 12 hydrostratigraphic units in the study area were discussed throughout. On the basis of the measured data of groundwater level, five kinds of changing patterns of groundwater level were deduced and the relationship between the deformation characteris-tics of aquifer units and the corresponding changing patterns of groundwater level was discussed. The study area is 1.7×104 km2, where the geological condition is complex. The changing patterns of groundwater level the hydrostratigraphic units have experienced vary from site to site and from time to time. Consequently, the deformation characteristics of units are sophisticated. An identical hydros-tratigraphic unit may exhibit different deformation characteristics, such as elasticity, elasto-plasticity, visco-elasticity, and visco-elasto-plasticity, at different sites or during different periods, not to mention the different units. The existing models are difficult to describe the complex visco-elasto-plastic con-stitutive law under the condition of land subsidence. So the Merchant’s model was modified to depict the visco-elasto-plastic behavior of units. Then a three-dimensional flow model with variable parame-ters and a vertical one-dimensional subsidence model were constructed and coupled. The coupled model was applied in simulating land subsidence in the southern Yangtze Delta and a satisfactory re-sult was obtained. The simulation results show that the new coupled model can depict the complex geological conditions and describe the developing process of land subsidence very well in the south-ern Yangtze Delta. The new model can surely be used to predict land subsidence in the future, which is very helpful to taking measurements to control land subsidence.XUE YuQun WU JiChun ZHANG Yun YE ShuJun SHI XiaoQing WEI ZiXin LI QinFen YU Jun 2008Science China Earth Sciences2008,51,6:6
6Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates显示文摘A hydrometallurgical process for refractory gold-bearing arsenosulfide concentrates at ambient temperature and pressure was presented, including fine grinding with intensified alkali-leaching (FGLAL), enhanced agitation alkali-leaching (EAAL), thiosul- fate leaching and displacement. Experimental results on a refractory gold concentrate showed that the total consumption of NaOH in alkaline leaching is only 41% of those theoretically calculated under the conditions of full oxidization for the same amount of arse- nides and sulfides transformed into arsenates and sulfates, and 72.3% of gold is synchro-dissoluted by thiosulfate self-generated during alkaline leaching. After alkaline leaching, thiosulfate leaching was carried out for 24 h. The dissolution of gold is increased to 91.9% from 4.6% by cyanide without the pretreatment. The displacement of gold by zinc powder in the solution gets to 99.2%. Due to an amount of thiosulfate self-generated during alkaline leaching, the reagent addition in thiosulfate leaching afterwards is lower than the normal.Yuqun Meng 2005Journal of University of Science and Technology Beijing2005,12,5:6
7Habitat Utilization of the Golden Takin During Later Autumn and Winter in Foping National Nature Reserve显示文摘SONG YANLING YU YUQUN GONG HUISHENG ZHANG SHANNING 1995生物多样性1995,3,B06:5
8Nanorattle Au@PtAg encapsulated in ZIF-8 for enhancing CO2 photoreduction to CO显示文摘Imidazolate-based ZIF-8 catalysts M@ZIF-8 (M = Au NR, Au@Ag NR, or Au@PtAg NRT;NR = nanorod, NRT = nanorattle), were assembled. Au NRs acted as the core for the epitaxial growth of the Ag shell, and oxidative etching of Au@Ag NRs led to Au@PtAg NRTs with K2PQI4 aqueous soluti on. All metal nano rods (MNRs) and metal nano rattles (MNRTs) were well dispersed and fully en capsulated in ZIF-8. Au @ PtAg NRTs encapsulated in ZIF-8 could lead to enhanced stability and selectivity for catalytic applications, combining the advantages of ZIF-8 (tailorable porosity) with the high surface area and improved optical sensitivity of rod-shaped NRTs. The catalyst Au @ PtAg@ZIF-8 exhibited efficient catalytic activity and CO selectivity for the gas-phase photoreduction of CO2 with H2O.Yuqun Su Haitao Xu Jiajia Wang Xikuo Luo Zhen-liang Xu Kefu Wang Wenzhong Wang 2019Nano Research2019,12,3:4
9Adult Neural Stem Cells: Constant Extension from Embryonic Ancestors显示文摘Adult neural stem cells(a NSCs)primarily exist in two regions:the subventricular zone(SVZ)of the lateral ventricle(LV)and the subgranular zone(SGZ)in the hippocampal dentate gyrus(DG)[1].It has been revealed that a NSCs in the SVZ(called type B cells)originate from embryonic NSCs mainly before embryonic day 15.5(E15.5),and are set aside for postnatal neurogenesis after diverging[2,3].Yuqun Cai Zhengang Yang 2019Neuroscience Bulletin2019,35,6:3
10Microstructure and Mechanical Properties of X80 HTP Pipeline Steel Produced by Steckel Mill显示文摘The demand for energy becomes a bottleneck in development of China.Economically delivering natural gas and oil through pipeline is an urgent problem to be solved.In the present work,X80 pipeline steel with high toughness and thickness 21.0 mm was produced through HTP(High Temperature Processing)by Steckel mill rolling.And the microstructure and mechanical properties of the X80 pipeline steel,which produced by different processing parameters such as reheating temperature of slabs,resume temperature,finishing temperature,accelerated cooling exit temperature and cooling rate,were analyzed.The results show that finishing temperature of 800-820℃ and cooling rate above 20℃/s are necessary to obtain fine and uniform acicular ferrite with high solute niobium in X80 pipeline steel.Jiang Haitao Qiao Mingliang Huang Yixin Yin Yuqun 2008Engineering Sciences2008,6,1:2
11Micro RNA ‐212 inhibits proliferation of gastric cancer by directly repressing retinoblastoma binding protein 2显示文摘Zeng Jiping Fang Ming Wang Lixiang Liang Xiuming Shen Yuqun Yu Han Liu Zhifang Sun Yundong Liu Shili Chen Chunyan Jia Jihui 2013J Cell Biochem2013,,12:2
12Electrochemical properties of nanosized hydrous manganese dioxide synthesized by a self-reacting microemulsion method显示文摘Chengjun Xu Baohua Li Hongda Du Feiyu Kang Yuqun Zeng 2008Journal of Power Sources2008,,:2
13Decoding Cortical Glial Cell Development显示文摘Mouse cortical radial glial cells(RGCs)are primary neural stem cells that give rise to cortical oligodendrocytes,astrocytes,and olfactory bulb(OB)GABAergic interneurons in late embryogenesis.There are fundamental gaps in understanding how these diverse cell subtypes are generated.Here,by combining single-cell RNA-Seq with intersectional lineage analyses,we show that beginning at around E16.5,neocortical RGCs start to generate ASCL1^(+)EGFR^(+)apical multipotent intermediate progenitors(MIPCs),which then differentiate into basal MIPCs that express ASCL1,EGFR,OLIG2,and MKI67.These basal MIPCs undergo several rounds of divisions to generate most of the cortical oligodendrocytes and astrocytes and a subpopulation of OB interneurons.Finally,single-cell ATAC-Seq supported our model for the genetic logic underlying the specification and differentiation of cortical glial cells and OB interneurons.Taken together,this work reveals the process of cortical radial glial cell lineage progression and the developmental origins of cortical astrocytes and oligodendrocytes.Xiaosu Li Guoping Liu Lin Yang Zhenmeiyu Li Zhuangzhi Zhang Zhejun Xu Yuqun Cai Heng Du Zihao Su Ziwu Wang Yangyang Duan Haotian Chen Zicong Shang Yan You Qi Zhang Miao He Bin Chen Zhengang Yang 2021Neuroscience Bulletin2021,37,4:2
14Simultaneousremoval of SO2 and NO by low cost sorbent-catalysts pre-pared by lime fly ash and industrial waste materials显示文摘Li Tianjin Zhuo Yuqun Lei Junyong 2007Kore-an J Chemistry Engineering2007,24,6:1
15Effect of sulfated CaO on NO reduction by NH3 in the presence of excess oxygen 显示文摘LI Tianjin ZHUO Yuqun ZHAO Yufeng CHEN Changhe XU Xuchang 2009Energy & Fuels2009,23,4:1
16Mercury transformation across particulate control devices in six power plants of China:the co-effect of chlorine and ash composition 显示文摘CHEN Lei DUAN Yufeng ZHUO Yuqun 2007Fuel2007,86,4:1
17Aquifer thermal energy storage: A numerical simulation of field experiments in China显示文摘 Xie Chunhong Li Qingfen 1990Water Resource Research1990,26,10:1
18Simulta- neous removal of SO and trace AsO from flue gas: mecha- nism, kinetics study, and effect of main gases on arsenic apture显示文摘Li Yuzhong Tong Huiling Zhuo Yuqun 2007Environmental ScienceTechnology2007,41,8:1
19A characteristic alternating direction implicit scheme of dareian the advection-dispersion equation显示文摘 Xie Chunhong 1988Development in Water Resources Proceedings of VII International Conferences on Compositive Methods in Water Resources MIT USA1988,2,:1
20Seawater intrusion in the coastal area of Laizhou Bay,China:1 Distribution of sea- water intrusion and its Hydrochemical characteristics显示文摘Xue Yuqun Wu Jichun 1993Ground Water1993,31,4:1
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