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| 1 | Research progress in hydrate-based technologies and processes in China:A review显示文摘Natural gas hydrate(NGH) is considered as an alternative energy resource in the future as it is proven to contain about 2 times carbon resources of those contained in the fossil energy on Earth. Gas hydrate technology is a new technology which can be extensively used in methane production from NGH, gas separation and purification, gas transportation, sea–water desalination, pipeline safety and phase change energy storage, etc. Since the 1980s, the gas hydrate technology has become a research hotspot worldwide because of its relatively economic and environmental friendly characteristics. China is a big energy consuming country with coal as a dominant energy.With the development of the society, energy shortage and environmental pollution are becoming great obstacles to the progress of the country. Therefore, in order to ensure the sustainable development of the society, it is of great significance to develop and utilize NGH and vigorously develop the gas hydrate technology. In this paper,the research advances in hydrate-based processes in China are comprehensively reviewed from different aspects,mainly including gas separation and purification, hydrate formation inhibition, sea–water desalination and methane exploitation from NGH by CH4–CO2 replacement. We are trying to show the relevant research in China, and at the same time, summarize the characteristics of the research and put forward the corresponding problems in a technical way. | Chungang Xu Xiaosen Li Kefeng Yan Xuke Ruan Zhaoyang Chen Zhiming Xia | 2019 | Chinese Journal of Chemical Engineering2019，27，9： | 6 |
| 2 | Towards better coordination of the supply chain显示文摘 | Kefeng Xu Yan Dong Philip T. Evers | 2000 | Transportation Research Part E2000，，1： | 2 |
| 3 | Suggestions on the Effective Development of Shale Gas in China显示文摘Shale gas is a practical resource with great potential that could be economically explored and developed in the near future. It has been commercially developed in North America and other places. Featuring a vast distribution, a low abundance,unfavorable reservoir conditions, ultra-low permeability and a fast production decline, shale gas is more difficult to develop than conventional natural gas, as it needs advanced drilling and completion technology to develop. During the early stage of shale gas exploration and development, the United States offered enterprises necessary incentives such as tax reductions and exemptions and subsidies to achieve sustainable shale gas development and encourage technological progresses. By comparing the state of China's shale gas development with that of the US' in terms of geological conditions, production technology,market price, tax relief, subsidy periods and amount, this paper intends to put forward related suggestions for the effective development of shale gas according to the current status of development. | Cao Yan Yang Kefeng Jing Keyao Hu Yan | 2018 | China Oil & Gas2018，25，4： | 2 |
| 4 | Methane hydrate formation and dissociation behaviors in montmorillonite显示文摘The methane hydrate formation and the methane hydrate dissociation behaviors in montmorillonite are experimentally studied. Through the analyses of the microstructure characteristic, the study obtains the porous characteristic of montmorillonite. It is indicated that methane hydrate in montmorillonite forms the structure I (si) crystal. Meanwhile, molecular dynamics simulation is carried out to study the processes of the methane hydrate formation and the methane hydrate dissociation in montmorillonite. The microstructure and microscopic properties are analyzed. The methane hydrate formation and methane hydrate dissociation mechanisms in the montmorillonite nanopore and on the montmorillonite surface are expounded. Combining the experimental and simulating analyses, the results indicate the methane hydrate formation and methane hydrate dissociation processes have little influence upon the crystal structure of porous media from either micro- or macro-analysis. It is beneficial to the fundamental researches on the exploitation and security control technologies of natural gas hydrate in deep-sea sediments. | Kefeng Yan Xiaosen Li Zhaoyang Chen Yu Zhang Chungang Xu Zhiming Xia | 2019 | Chinese Journal of Chemical Engineering2019，27，5： | 2 |
| 5 | Streamer dynamics and charge self-erasing of two counter-propagating plasmas in repetitively pulsed surface dielectric barrier discharge显示文摘The streamer dynamics and charge self-erasing of two counter-propagating plasmas generated by repetitively pulsed surface dielectric barrier discharge are investigated using electrical and optical diagnosis,and a two-dimensional fluid model.Three distinct discharge phases of primary,transitional and secondary streamers are identified in a single-pulse discharge through the time-resolved plasma images.Moreover,a merging phenomenon of the two opposing primary streamers is observed at the middle position of the discharge gap.Compared to the first pulse,a low streamer propagation velocity of the primary streamer is measured during the subsequent discharge process due to the limitation of residual surface charges left by the previous discharge.No significant dif-ferences of the transferred charge and the deposited energy are obtained in the sequential pulses at a discharge gap of 9 mm.Numerical simulations show that a reduction for the plasma intensity of the approached two primary streamers is attributed by the accumu-lated charge on the dielectric surface and gathered positive charges in the streamer head.Numerical and experimental studies indicate that the residual charges can be erased by the secondary streamer through the drifted electrons,namely that a phenomenon of charge self-erasing can be realized in the individual pulse. | Bangfa Peng Nan Jiang Kefeng Shang Na Lu Jie Li Yan Wu | 2022 | High Voltage2022，7，4： | 2 |
| 6 | Work roll thermal contour prediction model of nonoriented electrical steel sheets in hot strip mills显示文摘The demands for profile and flatness of nonoriented electrical steels are becoming more and more severe.The temperature field and thermal contour of work rolls are the key factors that affect the profile and flatness control in the finishing trains of the hot rolling.A theoretic mathematical model was built by a two-dimensional finite difference to calculate the temperature field and ther- mal contour at any time within the entire rolling campaign in the hot rolling process.To improve the calculating speed and precision, some special solutions were introduced,including the development of this model,the simplification of boundary conditions,the computation of heat transfer coefficient,and the narrower mesh along the edge of the strip.The effects of rolling pace and work roll shifting on the temperature field and thermal contour of work rolls in the hot rolling process were demonstrated.The calculated re- sults of the prediction model are in good agreement with the measured ones and can be applied to guiding profile and flatness control of nonoriented electrical steel sheets in hot strip mills. | Ningtao Zhao Jianguo Cao Jie Zhang Yi Su Tanli Yan Kefeng Rao | 2008 | Journal of University of Science and Technology Beijing2008，15，3： | 2 |
| 7 | Towards better coordination of the supply chain显示文摘 | Xu Kefeng Dong Yan Evers P T | 2001 | Transportation ResearchPart E2001，37，2： | 1 |
| 8 | A supply chain model of vendor managed inventory显示文摘 | Yan Dong Kefeng Xu | 2002 | Transportation Research Part E2002，38，： | 1 |
| 9 | Towards better coordination of the supply chain 显示文摘 | Xu Kefeng Yan Dong Philip T E | 2001 | Transportation Research Part E2001，37，1： | 1 |
| 10 | A supply chain model of vendor managed inventory显示文摘 | YAN DONG XU KEFENG | 2002 | Transportation Research Part E2002，，38： | 1 |
| 11 | A supply chain model of vendor managed inventory显示文摘 | YAN DONG KEFENG XU | 2002 | Transportation Research:Part E2002，38，2： | 1 |
| 12 | A supply chain model of vendor managed inventory显示文摘 | Yan Dong Kefeng Xu | 2002 | Transportation Research Part E2002，38，： | 1 |
| 13 | A Supply Chain Model of Vendor Managed Inventory显示文摘 | Dong Yan Xu Kefeng | 2002 | Transportation Research Part E2002，38，2： | 1 |
| 14 | A supply chain model of vendor managed inventory 显示文摘 | Yan Dong Kefeng Xu | 2002 | Transportation Research Part E2002，38，： | 1 |
| 15 | A supply chain model of vendor managed inventory 显示文摘 | DONG YAN XU KEFENG | 2002 | Transportation Research Part E2002，，38： | 1 |
| 16 | A supply chain model of vendor managed inventory显示文摘 | Dong Yan Xu Kefeng | 2002 | Transportation Research Part E2002，，38： | 1 |
| 17 | A supply chain model of vendor managed inventory显示文摘 | YAN DONG KEFENG XU | 2002 | Transportation Research Parl E2002，，38： | 1 |
| 18 | A supply chain model of vendor managed inventory显示文摘 | Dong Yan Xu Kefeng | 2002 | Transportation Research Part E2002，38，2： | 1 |
| 19 | A supply chain model of vendor managed inventory显示文摘 | Yan Dong Kefeng Xu | 2002 | Transportation Research Part E2002，，38： | 1 |
| 20 | A supply chain model of vendor managed inventory显示文摘 | Dong Yan Xu Kefeng | 2002 | Transportation Research Part E2002，，38： | 1 |
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