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| 1 | Roles of furfural during the thermal treatment of bio-oil at low temperatures显示文摘The reactive O-containing species in bio-oil could induce the polymerization of bio-oil during its thermal treatment, which affects the relevant utilization of bio-oil significantly. Furans, as the highly reactive Ocontaining species in bio-oil, play important roles during the thermal treatment of bio-oil. In this study,furfural was chosen as the representative of the furans in bio-oil to investigate its roles during the thermal treatment of bio-oil. The raw bio-oil with and without the addition of extra furfural(10 wt% of bio-oil) and pure furfural were pyrolyzed in a fixed-bed reactor at 200–500 ℃. The results show that the interactions among furfural and bio-oil components can take place prior to the evaporation of furfural(<140 ℃) to form the intermediates, then these intermediates could be further polymerized to form large molecular compounds, and coke can be formed via the interactions at temperatures ≥ 300 ℃. At temperatures ≤ 300 ℃, furfural mainly interacts with anhydrosugars. As the temperature further increases, the aromatics are involved in the interactions to form coke. The increased percentage of the coke formed via the interactions is in a linear relation with the conversion of furfural during the pyrolysis at 300–500 ℃(no coke formed at 200 ℃). Meanwhile, more non-aromatic light components(≤ C6) and less aromatics in the tars could be formed due to the interactions. | Zhe Xiong Yuanjing Chen Muhammad Mufti Azis Xun Hu Wei Deng Hengda Han Long Jiang Sheng Su Song Hu Yi Wang Jun Xiang | 2020 | Journal of Energy Chemistry2020，29，11： | 2 |
| 2 | Trace element aluminum and health显示文摘 | LI Hengda WANG Yuemei LI Lei | 2006 | World Elemental Medicine2006，13，2： | 1 |
| 3 | Contrast Enhancement Based on a Novel Homogeneity Measurement显示文摘 | Cheng Hengda Xue Mei Shi Xiangjun | 2003 | Pattern Recognition2003，36，11： | 1 |
| 4 | Computer- aided detection and classification of microcalcifications in mommograms : a survey 显示文摘 | Cheng Hengda Cai Xiaopeng Chen Xiaowei | 2003 | Pat tern Recognition2003，36，12： | 1 |
| 5 | A New Neutrosophic Approach to Image Thresholding显示文摘 | Cheng Hengda Guo Yanhui | 2008 | New Mathematics and Natural Computa- tion2008，4，3： | 1 |
| 6 | New Neutrosophic Appraoch to Image Segmentation显示文摘 | Guo Yanhui Cheng Hengda | 2009 | Pattern Recognition2009，42，5： | 1 |
| 7 | Contrast Enhancement Based on a Novel Homogeneity Measurement显示文摘 | Cheng Hengda | 2003 | Pattern Recognition2003，36，11： | 1 |
| 8 | Approaches for automated detection and classification of masses in mammograms显示文摘 | Cheng Hengda Shi Xianjun Min Rui | 2006 | Pattern Recognition2006，39，4： | 1 |
| 9 | A hierarchical approach to color image segmentation using homogeneity显示文摘 | Cheng Hengda Sun Ying | 2002 | IEEE Trans on Image Processing2002，，9： | 1 |
| 10 | A hierarchical approach to color image segmentation using homogeneity 显示文摘 | CHENG Hengda SUN Ying | 2000 | IEEE Trans on Image Processing2000，9，12： | 1 |
| 11 | A hierarchical approach to color image segmentation using homogeneity 显示文摘 | Cheng Hengda Sun Ying | 2000 | IEEE Transactions on Image Processing2000，9，12： | 1 |
| 12 | Color im- age segmentation: advances and prospects显示文摘 | Cheng Hengda Jiang Xiahua Sun Ying | 2001 | Pattern Recogni- tion2001，34，12： | 1 |
| 13 | Broadband absorption of macro pyramid structure based flame retardant absorbers显示文摘Flame-retardant materials with good electromagnetic wave absorption play an increasingly important role in Over-the-Air(OTA)tests in microwave anechoic chambers.In this work,carbon nanotubes and ammonium polyphosphate(CNTs@APP)composite were prepared by crosslinking with the silane coupling agent(KH550).The flame retardancy is improved with the increase of APP.However,the microwave absorption performance(MAP)and processing difficulty changed greatly as well.Therefore,magnesium aluminum double-layer metal hydroxide(LDH)was obtained by coprecipitation method and processing into the coating,so as to realize flame retardancy which reaches the limiting oxygen index(LOI)of 24.8%and good MAP at the same time.Then,a high-frequency structure simulator(HFSS^(TM))was used to simulate the pyramid model to realize the broadband absorption,and the optimal parameter range was obtained,that is,when the total height of the material is 40 mm,the height of the base accounts for 1/5-1/3,and the tangent of the half top angle is near 1/5,which result in the best MAP.Finally,the broadband absorption of 14.36 GHz(3.64-18 GHz)was realized when the base height is 1/3,and the broadband absorption of 14 GHz(4-18 GHz)can be realized under the condition of large-angle oblique incidence of 0°-60°. | Hengda Sun Ying Zhang Yue Wu Yue Zhao Ming Zhou Lie Liu Shaolong Tang Guangbin Ji | 2022 | Journal of Materials Science & Technology2022，，33： | 1 |
| 14 | Trace element aluminum and health显示文摘 | LI Hengda WANG Yuemei LI Lei | 2006 | World Elemental Medicine2006，13，2： | 1 |
| 15 | Color ImageSegmentation:Advances and Prospects显示文摘 | Cheng Hengda Jiang Xihua Sun Ying | 2001 | Pattern Recognition2001，34，12： | 1 |
| 16 | A Hierarchical Approach to Color Image Segmentation Using Homogeneity显示文摘 | Sun Ying | 2000 | IEEE Transactions on Image Processing2000，9，： | 1 |
| 17 | A hierarchical approach to color image segmentation using homogeneity显示文摘 | Cheng Hengda Sun Ying | | 0，，12： | 1 |
| 18 | Anchor Vertex Selection for Enhanced Reliability of Traffic Offloading Service in Edge-Enabled Mobile P2P Social Networks显示文摘As the rapid growth of mobile social networks,mobile peer-to-peer(P2P)communications and mobile edge computing(MEC)have been developed to reduce the traffic load and improve the computation capacity of cellular networks.However,the stability of social network is largely ignored in the advances of P2P and MEC,which is related to the social relations between users.It plays a vital role in improving the efficiency and reliability of traffic offloading service.In this paper,we integrate an edge node and the nearby P2P users as a mobile P2P social network and introduce the problem of adaptive anchored(k,r)-core to maintain the stability of multiple mobile P2P networks.It aims to adaptively select and retain a set of critical users for each network,whose participation is critical to overall stability of the network,and allocate certain resource for them so that the maximum number of users of all networks will remain engaged and the traffic of cellular network can be minimized.We called the retained users as anchor vertices.To address it,we devise a peer-edge-cloud framework to achieve the adaptive allocation of resources.We also develop a similarity based onion layers anchored(k,r)-core(S-OLAK)algorithm to explore the anchor vertices.Experimental results based on a real large-scale mobile P2P data set demonstrate the effectiveness of our method. | Hengda Zhang Xiaofei Wang Hao Fan Taotao Cai Jianxin Li Xiuhua Li Victor C.M.Leung | 2020 | Journal of Communications and Information Networks2020，5，2： | 0 |
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