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| 1 | Effect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys显示文摘The effect of squeeze casting on microstructure and mechanical properties of hypereutectic Al-xS i alloys(x = 15, 17.5, 22 wt%) was investigated in this study. Results show that microstructure of the hypereutectic Al-x Si alloys was obviously improved by squeeze casting. The amount of coarse primary Si phase decreased, while that of ?ne primary α-Al dendrites increased with the increase of squeeze casting pressure. Due to the decrease of coarse primary Si particles, cracking of the matrix was reduced, whilst the?ne microstructure, and mechanical properties of the squeeze casting alloys were improved. Compared with gravity casting alloys, mechanical properties of the hypereutectic Al-xS i alloys solidi?ed at 600 MPa were improved signi?cantly. Hardness of the squeeze casting hypereutectic Al-(15, 17.5, 22 wt%) Si alloys was improved by 15.91%, 12.23%, 17.48%, ultimate tensile strength was improved by 37.85%, 32.27%, 22.74%,and elongation was improved by 55.83%, 167.86%, 126.76%, respectively. Due to the uniform distribution of Si phases in squeeze casting Al-x Si alloys, their wear resistance was markedly enhanced. | Runxia Li Lanji Liu Lijun Zhang Jihong Sun Yuanji Shi Baoyi Yu | 2017 | Journal of Materials Science & Technology2017，33，4： | 8 |
| 2 | Effects of Cd and Sn on double-peak age-hardening behaviors of Al-Si-Cu-Mg cast alloys显示文摘The effects of trace elements Cd and Sn on precipitation process of Al-Si-Cu-Mg cast alloys were investigated in the present research.It is shown that the addition of Cd and Sn not only increases remarkably the aging peak hardness and reduces the time to reach aging peak,but also eliminates the double-aging-peak phenomenon which appears in Al-Si-Cu-Mg alloys.In Al-Si-Cu-Mg alloys the first aging peak corresponds to GP zones(especially GPⅡ) ,and the second one is caused by metastable phases.The obvious time interval of transition from GPⅡ to metastable phases associates with the double-aging-peak phenomenon.The results of DSC and TEM show that Cd/Sn elements suppress the formation of GPⅠzone,stimulate the formation of θ',θ' and θ phases,and then shorten remarkably the temperature intervals of each exothermic peak.Because the transition interval between GPⅡzone and metastable phases is shortened by Cd/Sn in Al-Si-Cu-Mg cast alloys,θ' phase coexists with θ' phase in matrix of ageing peak condition,which causes effective hardening on the alloys,and at the same time,eliminates the double-aging-peak phenomenon. | Li Runxia Chen Yujin Yuan Xiaoguang Qu Yingdong Li Rongde | 2010 | China Foundry2010，7，1： | 7 |
| 3 | Progress of circulating fluidized bed combustion technology in China:a review显示文摘Circulating fluidized bed(CFB)technology plays an important role in the utilization of low-grade coal in China.This article reviews CFB combustion technology development in China and summarizes recent achievements.Since 1990 Chinese engineers and researchers have been undertaking work to improve CFB boiler technology.A completely novel CFB boiler design theory was developed and used in the domestic manufacturing of CFB boilers with various capacities.China is the largest supplier and customer of CFB boilers in the world due to the widespread use of CFB boilers.In 2007,the lower energy consumption CFB technology was successfully developed by re-specifying the fluidization state,which reduced the power consumption of forced fans and solved the potential erosion problems on the water wall.Afterwards,in order to increase the electric power generation efficiency,the supercritical CFB(SCCFB)boiler was developed and the first 600 MW SCCFB boiler was demonstrated and put into commercial operation in 2013.The success of the technology is evident with over 80 SCCFB boilers on order with capacities of 350 MW to 660 MW.Chinese scientists and engineers are also developing technology to lower the emissions of CFB combustion to meet the requirements of China’s strict emission regulations.This emission reduction is through high-efficiency desulfurization by limestone injection into the furnace and low NOx combustion,ultra-low emission of SO2 and NOx in the furnace can be realized by improving the bed quality and increasing the solid circulation rate.There is currently further research and design development being undertaken to develop a 660 MW ultra-supercritical CFB(USCCFB)boiler.The new boiler is expected to be operational before 2020 resulting in higher efficiency and lower energy consumption and emissions. | Runxia Cai Xiwei Ke Junfu Lyu Hairui Yang Man Zhang Guangxi Yue Wen Ling | 2017 | Clean Energy2017，1，1： | 5 |
| 4 | Effect of hot extrusion process on microstructure and mechanical properties of hypereutectic Al-Si alloys显示文摘The hypereutectic Al-Si alloy was fabricated by hot extrusion process after solidified under electromagnetic stirring,and the microstructure and mechanical properties of the alloy were studied.The results show that the ultimate tensile strength and elongation of the alloy reached 229.5 MPa and 4.6%,respectively with the extrusion ratio of 10,and 263.2 MPa and 5.4%,respectively with extrusion ratio of 20.This indicates that the mechanical properties of the alloy are obviously improved with the increase of extrusion ratio.After hot extruded,the primary Si,eutectic Si,Mg2Si,AlNi,Al7Cu4Ni and Al-Si-Mn-Fe-Cr-Mo phases are refined to different extent,and the efficiency of refinement is obvious more and more with the increase of extrusion ratio.After T6 heat treatment,the sharp corners of these phases become passivated and roundish,and the mechanical properties are improved.The ultimate tensile strength of the extruded alloy after T6 heat treatment reaches 335.3 MPa with extrusion ratio of 10 and 353.6 MPa with extrusion ratio of 20. | Li Runxia Yu Fuxiao Zuo Liang | 2011 | China Foundry2011，8，1： | 3 |
| 5 | Evolvement behavior of microstructure and H_2O adsorption of lignite pyrolysis显示文摘The effect of pyrolysis on the microstructure and moisture adsorption of lignite was investigated with low field nuclear magnetic resonance spectroscopy. Changes in oxygen-containing groups were analyzed by Fourier transform infrared spectroscopy(FTIR), and H2 O adsorption mechanism on the surface of lignite pyrolysis was inferred. Two major changes in the pore structure of lignite char were observed as temperature increased in 105–200 °C and500–700 °C. Pyrolysis temperature is a significant factor in removing carboxyl and phenolic hydroxyl from lignite.Variation of ether bond content can be divided into three stages; the content initially increased, then decreased,and finally increased. The equilibrium adsorption ratio, content of oxygen-containing groups, and variation of pore volume below 700° were closely correlated with each other. The amount of adsorbed water on char pyrolyzed at700 °C increased. Moreover, the adsorption capacity of the lignite decreased, and the adsorption state changed. | Yingyue Teng Shijun Lian Quansheng Liu Yuzhe Liu Yinmin Song Runxia He Keduan Zhi | 2016 | Chinese Journal of Chemical Engineering2016，24，6： | 3 |
| 6 | A Case Study on the Rapid Rain-to-Snow Transition in Late Spring 2018 over Northern China:Effects of Return Flows and Topography显示文摘Phase changes in the precipitation processes of early winter and late spring in midlatitude regions represent challenges when forecasting the timing and magnitude of snowfall.On 4 April 2018,a heavy snow process occurred in Beijing and northwestern Hebei Province,becoming the most delayed occurrence of heavy spring snow ever recorded over Beijing in the last 30 years.This paper uses observational and numerical simulation data to investigate the causes for the rapid rain-to-snow(RRTS)phase transition during this process.The following results are obtained.(1)Return flows(RFs),an interesting type of easterly wind,including those at 1000,925,and 800 hPa,played an important role in this heavy snow process and presented a characteristic'sandwich'structure.The RFs,complex topography,and snow particles that dominated the clouds,were the three key factors for the RRTS transition.(2)The RRTS transition in the plains was directly related to the RF at 925 hPa,which brought about advective cooling initiated approximately 4-6 h before the onset of precipitation.Then,the RF played a role of diabatic cooling when snow particles began to fall at the onset of precipitation.(3)The RRTS transition in the northern part of the Taihang Mountains was closely related to the relatively high altitude that led to a lower surface temperature owing to the vertical temperature lapse rate.Both immediately before and after the onset of precipitation,the snow particles in clouds entrained the middle-level cold air downward,causing the melting layer(from surface to the 0℃-isotherm level)to become very thin;and thus the snow particles did not have adequate time to melt before falling to the ground.(4)The rapid RRTS over the Yanqing mountainous area in the northwest of Beijing could have involved all the three concurrent mechanisms:the advective cooling of RF,the melting cooling of cloud snow particles,and the high-altitude effect.Compared with that in the plain area with less urbanization the duration of the RRTS in the plain area with significant urbanization was extended by approximately 2 h. | Wenlong ZHANG Xiaopeng CUI Bolong DUAN Bo YU Runxia GUO Haiwen LIU | 2022 | Journal of Meteorological Research2022，36，1： | 2 |
| 7 | Reaction and characterization studies of an industrial Cr-free ironbased catalyst for high temperature water gas shift reaction 显示文摘 | Liu Quansheng Ma Wenping He Runxia | 2005 | Catalysis Today2005，106，14： | 1 |
| 8 | Lateral shift of acoustic wave at interface between double-positive and double-negatlve media 显示文摘 | Zeng Lunwu Song Runxia | 2006 | Phys Lett A2006，358，： | 1 |
| 9 | Cellular automaton modeling of semisolid microstructure formation显示文摘Computer modeling of semi-solid structure formation is of significance in both understanding the mechanisms of globular structure formation and determining the effect of solidification conditions on final microstructure.A modified cellular automaton(mCA) model has been developed,which is coupled with macroscopic models for heat transfer calculation and microscopic models for nucleation and grain growth.The mCA model is applied to A356 Al alloy-one of the most widely used semi-solid alloys,to predict grain morphology and grain size during semi-solid solidification,and determines the effects of pouring temperature on the final microstructure.The modeling results show that the lower the initial temperature,the finer grain size will be obtained.In addition,the model can be used to predict the solutal micro-segregation. | Li Qiang Yu Baoyi Zhang Huawen Li Runxia Wang Feng Xie Shuisheng Huang Guojie Wang Hao | 2010 | China Foundry2010，7，2： | 1 |
| 10 | Reaction and characterization studies of an iodustrial Cr-free iron-based catalyst for high temperature water gas shift reaction显示文摘 | Liu Quansheng Ma Wenping He Runxia | 2005 | Catalysis Today2005，106，14： | 1 |
| 11 | Notch activation induces endothelial cell senescence and pro-inflammatory response: Implication of Notch signaling in atherosclerosis显示文摘 | Zhao-Jun Liu Yurong Tan Gary W. Beecham David M. Seo Runxia Tian Yan Li Roberto I. Vazquez-Padron Margaret Pericak-Vance Jeffery M. Vance Pascal J. Goldschmidt-Clermont Alan S. Livingstone Omaida C. Velazquez | 2012 | Atherosclerosis2012，，2： | 1 |
| 12 | Combination thera py of amlodipine and atorvastatin has more beneficial vascular effects than monotherapy in salt-sensitive hypertension显示文摘 | Ming- Sheng Z Runxia T Jaimes EA | 2014 | American Journal of Hypertension2014，27，6： | 1 |
| 13 | Reaction and characterization studies of an industrial Cr-free iron- based catalyst for high temperature water gas shift reaction 显示文摘 | Liu Quansheng Ma Wenping He Runxia | 2005 | Catalysis Today2005，106，14： | 1 |
| 14 | 显示文摘 | Li Runxia Bai Yanhua Sun Wanbai | 1998 | Journal of Shenyang Polytechnic University1998，20，3： | 1 |
| 15 | N-Linked Glycosylation of GP5 of Porcine Reproductive and Respiratory Syndrome Virus Is Critically Important for Virus Replication In Vivo显示文摘 | Zuzhang Wei Tao Lin Lichang Sun Yanhua Li Xiaoming Wang Fei Gao Runxia Liu Chunyan Chen Guangzhi Tong Shishan Yuan | 2012 | Journal of Virology2012，，18： | 1 |
| 16 | Using benzene carboxylic acids to prepare zirconium-based catalysts for the conversion of biomass-derived furfural显示文摘Benzene carboxylic acid (BCAs) are common and useful chemical blocks, which can be derived from the abundant low rank coals (LRCs) via oxidative degradation. In this work, we proposed a novel strategy to utilize BCAs as raw materials to prepare catalysts with transition metal zirconium, and the prepared catalysts were applied into the conversion of the renewable biomass resources. Typical model BCAs in the oxidative products of LRCs, including pyromellitic acid, trimesic acid (TMSA), trimellitic acid, and benzoic acid, were used as the block to construct the Zr- BCAs catalysts. The chemoselective conversion of furfural into furfuryl alcohol (FAL). an important reaction in the biomass conversion chain, is chosen to evaluate the activity of the catalysts. The preparation conditions of the catalysts and experiment factors during the reaction were systematically investigated. The prepared catalysts were characterized by SEM, TEM, XRD and TG-DTG. The results showed that the prepared catalysts were efficient for the conversion of furfural into FAL, among which Zr-TMSA gave the highest activity. Zr-TMSA could be recycled for ten times without obvious deactivation, indicating an excellent stability. The strategy proposed in this work may be beneficial for the value-added utilization of both LRCs and biomass resources. | Huacong Zhou Yufei Sha Zhenhuan Xiao Lu Li Jianmin Hao Keli Yang Na Li Runxia He Quansheng Liu | 2018 | International Journal of Coal Science & Technology2018，5，4： | 1 |
| 17 | Reaction and characterization studies of an industrial Cr-free iron-based catalyst for high temperature water gas shift reaction 显示文摘 | Liu Quansheng Ma Wenping He Runxia | 2005 | Catalysis Today2005，106，14： | 1 |
| 18 | KDM2B能够依赖其招募PRC1.1复合物的功能调控体细胞重编程显示文摘文章简介PRC1(Polycomb Repressive Complex 1)复合物在发育过程中起着非常重要的作用,很多复合物成分的缺失或者异常都能直接导致胚胎发育的异常。最近的研究发现PRC1包含多种变体,但是其对细胞命运调控的具体机制并不十分清楚。 | Zhiwei Zhou Xuejie Yang Jiangping He Jing Liu Fang Wu Shengyong Yu Yuting Liu Runxia Lin He Liu Yuanbin Cui Chunhua Zhou Xiaoshan Wang Jian Wu Shangtao Cao Lin Guo Lihui Lin Tao Wang Xiaozhong Peng Boqing Qiang Andrew P.Hutchins 裴端卿 陈捷凯 | 2018 | 科学新闻2018，0，4： | 0 |
| 19 | Nucleation and growth of Fe-rich phases in Al-5Ti-1B modified Al-Fe alloys investigated using synchrotron X-ray imaging and electron microscopy显示文摘Plate-like Fe-rich intermetallic phases directly influence the mechanical properties of recycled Al alloys;thus, many attempts have been made to modify the morphology of these phases. Through synchrotron X-ray imaging and electron microscopy, the underlying nucleation and growth mechanisms of Fe-rich phases during the solidification of Al-5 Ti-1 B-modified Al-2 Fe alloys were revealed in this study. The results showed that the Al-5 Ti-1 B grain refiner as well as the applied pressure both resulted in reduction of the size and number of primary Al_(3)Fe phases and promoted the formation of eutectic Al_(6)Fe phases.The tomography results demonstrated that Al-5 Ti-1 B changed the three-dimensional(3 D) morphology of primary Fe-rich phases from rod-like to branched plate-like, while a reduction in their thickness and size was also observed. This was attributed to the fact that Ti-containing solutes in the melts inhibit the diffusion of Fe atoms and the Al_(3)Fe twins produce re-entrant corner on the twin boundaries along the growth direction. Moreover, the TiB_(2) provides possible nucleation sites for Al_6Fe phases. The nucleation mechanism of Fe-rich phases is discussed in terms of experimental observations and crystallography calculations. The decrease in the lattice mismatch between TiB_(2) and Al_(6)Fe phases was suggested, which promoted the transformation of Al_(3)Fe to Al_(6)Fe phases. | Yuliang Zhao Weiwen Zhang Dongfu Song Bo Lin Fanghua Shen Donghai Zheng ChunXiao Xie Zhenzhong Sun Yanan Fu Runxia Li | 2021 | Journal of Materials Science & Technology2021，，21： | 0 |
| 20 | 云南“菜王”闯出一片天显示文摘马来西亚“菜王”江钰满的合作伙伴李云锁14年前以5000元人民币起家,创建“昆明晨农绿色产品有限公司”,梦想把蔬粟输往世界各地:如今,这家小公司已发展成为具有国际先进水平的、集蔬菜生产加工和储运销售为一体的现代化综合性企业——昆明晨农企业集团,产品远销马来西亚、新加坡、越南、泰国、缅甸、日本、英国,当年的梦想已然成真。 | He Runxia 张晓雁(编译) | 2006 | 中国-东盟博览2006，，6： | 0 |
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