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| 1 | New advances in pollination biology and the studies in China显示文摘Pollination biology is the study of the various biological features in relation to the event of pollen transfer. It is one of the central concerns of plant reproductive ecology and evolutionary biology. In this paper, we attempt to introduce the main advances and some new interests in pollination biology and make a brief review of the research work that has been done in China in recent years. We also give some insights into the study that we intend to carry out in this field in the future. | Shuangquan Huang Youhao Guo | 2000 | Chinese Science Bulletin2000,45,16: | 17 |
| 2 | Flexibility of MIP Technology显示文摘The flexibility of MIP technology to meet market demand is mainly introduced in this study. Their commercial application and technical principle are analyzed too. The MIP technology with wide feed adaptability can form a good combination with other technologies. The MIP technology has been applied extensively in China. Based on this platform, the CGP, MIP-LTG and MIP-DCR technologies have been developed, which can further improve the flexibility of MIP technology. Based on its novel reaction control technique with a sole sequential two-zone riser, the MIP users can easily switch to different operating modes between producing either more clean gasoline and propylene or diesel through changing the catalysts and varying the operating conditions. That offers MIP users with enough production flexibility and a rational production arrangement to meet the market demand. The MIP-DCR technology with less dry gas and coke yields can provide a more flexible operating mode since the catalysts to oil ratio has become an independent variable. | Tang Jinlian Gong Jianhong Xu Youhao | 2015 | China Petroleum Processing & Petrochemical Technology2015,17,3: | 8 |
| 3 | Synergetic Effect of Y Zeolite and ZSM-5 Zeolite Ratios on Cracking, Oligomerization and Hydrogen Transfer Reactions显示文摘The objective of this study is to explore the optimum composition of Y and ZSM-5 zeolites to develop novel catalysts for obtaining lower gasoline olefins content and higher propylene yield. Five composite zeolite catalysts with varying Y zeolite/ZSM-5 zeolite ratios have been prepared in this work to investigate the synergy between the Y zeolite and ZSM-5 zeolite on the selectivity to protolytic cracking, β-scission, oligomerization, and hydrogen transfer reactions using a FCC naphtha feedstock at 480 ℃ in a confined fluidized bed reactor. Experimental results showed that the composite catalyst with a Y zeolite/ZSM-5 zeolite ratio of 1:4 had the highest protolytic cracking and β-scission ability, which was even higher than that of pure ZSM-5 catalyst. On the other hand, the catalyst with a Y zeolite/ZSM-5 zeolite ratio of 3:2 exhibited the strongest hydrogen transfer functionality while the pure Y zeolite based catalyst had the highest oligomerization ability. For all the catalysts tested, increasing conversion enhanced the selectivity to protolytic cracking and hydrogen transfer reactions but reduced the selectivity to β-scission reaction. However, no clear trend was identified for the selectivity to oligomerization when an increased conversion was experienced. | Gong Jianhong Xu Youhao Long Jun Wei Xiaoli | 2014 | China Petroleum Processing & Petrochemical Technology2014,16,3: | 7 |
| 4 | A novel fluid catalytic cracking process for maximizing /so-paraffins: From fundamentals to commercialization显示文摘 | Youhao Xu Shouye Cui | 2018 | Frontiers of Chemical Science and Engineering2018,12,1: | 6 |
| 5 | Study on Reaction Mechanism for Cracking FCC Gasoline on Acid Catalyst显示文摘This article is based on the experimental data on reaction of FCC naphtha in the presence of acid catalysts. The data published in the literature were reprocessed and compared with experimental data and the relationship of hydrogen and methane contained in the dry gas with the conversion rate was identified.The similarity between the route for cracking of olefin enriched FCC gasoline and the route for reaction of individual hydrocarbons was deduced, while the route for formation of ethylene in dry gas was also proposed to identify the relationship between the reaction path for formation of ethylene and the conversion rate. | Xu Youhao Wang Xieqing(Research Institute of Petroleum Processing, Beijing 100083) | 2004 | China Petroleum Processing & Petrochemical Technology2004,6,1: | 6 |
| 6 | Floral evolution:Beyond traditional viewpoint of polli-nator mediated floral design显示文摘Pollination biology provides new insight for understanding the evolutionary mechanism and process of the existing diversity in floral design of angiosperms. Evolutionary biologists have established some rules and models to try to explain the ubiquitous relationship between pollination system and floral evolution. However, as new techniques have been applied and more and more new pollination events found in recent years, the relationship between pollination system and floral evolution has become less clear. Researchers realized that floral evolution is more complicated and idiosyncratic than simple adaptive models. The traditional viewpoints of pollinator mediated floral design urgently need new reevaluation. This paper attempts to make a brief review of such main opinions and introduce their new insights according to recent studies. Finally, we also give some suggestions for future study by reviewing several new viewpoints about floral evolution. | YANG Chunfeng GUO Youhao | 2005 | Chinese Science Bulletin2005,50,21: | 5 |
| 7 | MIP Technology for Pruduction of Euro Ⅳ Clean Gasoline Ⅱ. Correlation Model of Sulfur Content of MIP Naphtha and Its Application显示文摘根据反应规则和它在 MIP 石油的硫混合物的影响因素,为在 MIP 描述在硫的集体部分之间的关联的一个关联模型石油,在化工物品的硫的集体部分和在石油的石蜡的体积部分被开发,模型的参数被估计。剩余错误分发和统计学习证明发达模型讲理、可靠、有能力在石油预言硫混合物的集体部分。关联模型能为调整进程参数由 MIP 单位生产欧元 IV 汽油提供理论指导和操作底。模型被它的应用程序在 Qingdao 精制与化学同伴的 MIP 单位上验证。在这个单位上,当化工物品和石油的石蜡内容被通过过程参数的调整支持氢转移反应减少,有经由 hydrotreating 气体油获得的低硫内容的尾巴油被使用。因此,欧元 IV 干净汽油由这个 MIP 单位被生产。 | Tang Jinlian Xu Youhao Gong Jianhong Wang Xieqing (Research Institute of Petroleum Processing,SINOPEC,Beijing 100083) | 2010 | China Petroleum Processing & Petrochemical Technology2010,12,1: | 3 |
| 8 | Coercivity enhancement mechanism of grain boundary diffused Nd-Fe-B sintered magnets by magnetic domain evolution observation显示文摘The grain boundary diffusion(GBD) technology was used to prepare high performance Nd-Fe-B sintered magnets by NdH3 and TbH3 nanoparticle diffusion.The factors affecting the coercivity of GBD magnets include distribution of rare earth rich grain boundary phase and substitution of the heavy rare earth.In order to distinguish the influence of various factors on the coercivity,the microstructure and magnetic domain evolution of the original,reference,Nd-diffused,and Tb-diffused magnets were analyzed.The core-shell structure formed by heavy rare earth substitution is the main factor of coercivity enhancement,and it can transform the magnetic domain reversal mode from easy-nucleation(EN) to difficultnucleation(DN).With increasing the diffusion depth,the shell of the core-shell structure gradually becomes thinner,DN grains gradually decrease while the EN grains gradually increase,indicating that the magnetic domain reversal mode is directly related to the core-shell structure. | Weiqiang Liu Yi Li Dan Wu Ming Yue Zhanjia Wang Shanshun Zha Youhao Liu Xiaofei Yi Yihui Du | 2021 | Journal of Rare Earths2021,39,6: | 2 |
| 9 | Improvement in ionic conductivity of self-supported P(MMA-AN-VAe) gel elec- trolyte by fumed silica for lithium ion batteries显示文摘 | Liao Youhao Rao Mumin Li Weishan | 2009 | Electroehim- ica Aeta2009,54,: | 1 |
| 10 | Advance in China fluid catalytic cracking (FCC) process 显示文摘 | Xu Youhao | 2014 | Scientia Sinica Chimica2014,44,1: | 1 |
| 11 | Fumed silica- doped poly(butyl methacrylate-styrene)-based gel polymer elec- trolyte for lithium ion battery 显示文摘 | Liao Youhao Rao Mumin Li Weishan | 2010 | Journal of Membrane Sci- ence2010,352,: | 1 |
| 12 | Fumed silica doped poly (butyl meth cry late-styrene)-based gel polymer electrolyte for lithium ion battery显示文摘 | Liao Youhao Rao Mumin Li Weishan | | 0,,: | 1 |
| 13 | Correlation of mechanical anisotropy with fine grain strengthening for Sm_(2)Co_(17)-type sintered permanent magnets显示文摘The as-solution-treated Sm_(2)Co_(17)-type magnets exhibiting a single 1:7 H phase with different average grain sizes(D) were designed.Anisotropy of bending strength(R_(bb))and compressive strength(R_(mc)) of the magnets were investigated.Moreover,the R_(bb) increases from 86 to 173 MPa with D decreasing from~52 to~18 μm for group c//h samples.The Hall-Petch correlation was employed to reveal the effect of grain size on mechanical properties of the magnets,giving deep understanding of the mechanical anisotropy characteristics.The relatively high Hall-Petch coefficient K^(Rbb)(0.79 MPa·m^(1/2)) gives rise to the largest R_(bb)(173 MPa) for group c//h samples.The mechanical anisotropy of the samples is well explained based on crystal structure and grain size features(grain boundaries).Grain refinement is an effective way to enhance the mechanical properties of Sm_(2)Co_(17)-type sintered magnets. | Lei Wang Chao Wang Qiangfeng Li Youhao Liu Yikun Fang Xiaofei Yi Wei Li | 2022 | Journal of Rare Earths2022,40,10: | 1 |
| 14 | Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model 显示文摘 | Lu Bona Wang Wei Li Jinghai Wang Xianghui Gao Shiqiu Lu Weimin Xu Youhao Long Jun | 2007 | Chemical Engineering Science2007,62,: | 1 |
| 15 | Polypropylene-supported and nano A12 O3 doped poly(ethylene oxide)-poly(vinylidene fluoride-hexafluoropropylene)based gel electrolyte for lithium ion batteries显示文摘 | Liao Youhao Li Xiaoping Fu Chenghua | | 0,,04: | 1 |
| 16 | Improved electrochemical performance of LiNi 0.5 Mn 1.5 O 4 as cathode of lithium ion battery by Co and Cr co-doping显示文摘 | Dongrui Chen Benzhen Li Youhao Liao Hongwei Lan Haibin Lin Lidan Xing Yating Wang Weishan Li | 2014 | Journal of Solid State Electrochemistry2014,,7: | 1 |
| 17 | A forward converter topology with independently and precisely regulated multiple outputs显示文摘 | Xi Youhao Jain P K | 2003 | IEEE Transactions on Power Electronics2003,18,2: | 1 |
| 18 | Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model 显示文摘 | Lu Bona Wang Wei Li Jinghai Wang Xianghui Gao Shiqiu Lu Weimin Xu Youhao Long Jun | 2007 | Chemical Engineering Science2007,62,181920: | 1 |
| 19 | The formation age and evolution of Kumtagh Desert显示文摘The ancient aeolian sand has been regarded as an indicator for the formation and evolution of a desert in the past.Kumtagh Desert is located at the northern fringe of Qinghai-Tibet Plateau.The first integrated scientific investigation to the desert was carried out during the period of 2004-2006.Kumtagh Desert is an ideal natural model for studying the formation and evolution of the desert because the Quaternary strata containing ancient aeolian sands are widely distributed.The integrated field investigation and studies on sedimentary,chronology and palynology of typical profiles named Suosuo gully,Xiaoquan gully and gravel body with ancient aeolian sand layers showed that Kumtagh Desert was probably formed as early as 2,097.7±314.7 ka BP.During the period of 386.9±58.0 ka BP to 285.9±42.9 ka BP,the desert largely expanded and formed its modern distribution pattern.The desert was originally developed in the southwest,subsequently,expanded to the north and northeast.The sedimentary facies of Suosuo gully profile revealed that the desert experienced at least 19 cycles of advance and inverse processes of desertification with an average period of 110 ka in the Quaternary.The neotectonic movements played an important role in the formation,development and geomorphology of the desert.On one hand,the movements caused the formation of intermontane fault basin,which was further developed towards the closed drought basin,and caused the formation of natural environment.On the other hand,under the control of surrounding faults,the unique broom-shaped desert landscape was formed,and the gullies and sand ridges in this region experienced an abrupt directional change from north by west to north by east at the location of 39°45'-39°55'N.The unique landscape of gravel body that occurred widely in the northern desert was formed after 285.9±42.9 ka BP.The results in this paper provide the scientific basis for studying the formation age and evolutionary process under the dry climate and environment in the northwestern China,and the uplifting of Qinghai-Tibet Plateau as well as its responses to the global climate changes. | JinNian TANG ZhiZhu SU Feng DING ShuJuan ZHU YouHao E XinWei ZHAI ZhiYu Yl HuJun LIU JinChun ZHANGI FaMing LI | 2011 | Journal of Arid Land2011,3,2: | 1 |
| 20 | Non-woven fabric supported poly(acrylonitrile-vinyl acetate) gel electrolyte for lithium ion battery use显示文摘 | Xiaoping Li Mumin Rao Youhao Liao | 2010 | J Appl Electrochem2010,40,: | 1 |