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H9N2 influenza virus in China： a cause of concern

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Protein & Cell 2015年第1期6卷 18-25页

作者： Yipeng Sun jinhua liu Key Laboratory of Animal Epidemiology and Zoonosis Ministry of Agriculture College of Veterinary MedicineChina Agricultural University Beijing 100083 China

The recent human infection with avian influenza virus revealed that H9N2 influenza virus is the gene donor for H7N9 and H10N8 viruses infecting humans. The crucial role of H9N2 viruses at the animal-human interface might be due to the wide host range, adaptation in both poultry and mammalian, and extensive gene reassortment. As the most prevalent subtype of influenza viruses in chickens in China, H9N2 also causes a great economic loss for the poultry industry, even under the long-term vaccination programs. The history, epidemiology, bio- logical characteristics, and molecular determinants of H9N2 influenza virus are reviewed in this paper. The contribution of H9N2 genes, especially RNP genes, to the infection of humans needs to be investigated in the future.

关键词： Influenza Poultry H9N2 Evolution,Virulence Antigenic drift

Multi-energy Demand Response Management in Energy Internet: A Stackelberg Game Approach

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Chinese Journal of Electronics 2019年第3期28卷 640-644页

作者： WU Jie ZHOU Wenhui ZHONG Weifeng liu jinhua Zhongshan Institute University of Electronic Science and Technology of China School of Automation Engineering University of Electronic Science and Technology of China School of Automation Guangdong University of Technology

A multi-energy Demand response management(DRM) approach in Energy Internet is proposed by employing Stackelberg game theory. The multi-energy trading problem in DRM is formulated as a Stackelberg game, where an energy provider, as a leader, adjusts energy prices, and residential smart energy hubs, as followers, dynamically schedule multiple energy flows according to the prices. The existence and uniqueness of the equilibrium of the proposed game model are analyzed.A multi-energy DRM algorithm for reaching the game equilibrium is developed. Simulation results show that the proposed game-based approach can effectively reduce residential energy costs and improve revenues of the energy provider.

关键词： Multi-energy demand response management(DRM) Energy hubs Energy Internet Stackelberg game

Drilling and completion technologies of coalbed methane exploitation: an overview

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International Journal of Coal Science & Technology 2022年第5期9卷 1-31页

作者： Tianshou Ma jinhua liu Jianhong Fu Bisheng Wu State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500SichuanChina State Key Laboratory of Hydroscience and Engineering Department of Hydraulic EngineeringTsinghua UniversityBeijing 100084China

Coalbed methane(CBM)drilling and completion technologies(DCTs)are signifcant basis for achieving efcient CBM exploration and *** of CBM reservoirs vary in diferent regions around the world,thereby,it is crucial to develop,select and apply the optimum DCTs for each diferent CBM *** paper frstly reviews the development history of CBM DCTs throughout worldwide and clarifes its overall development ***,diferent well types and its characteristics of CBM exploitation are summarized,and main application scopes of these well types are also ***,the key technologies of CBM drilling(directional drilling tools,measurement while drilling,geo-steering drilling,magnetic guidance drilling,underbalanced drilling and drilling fuids),and the key technologies of CBM completion(open-hole,cavity and under-ream completion,cased-hole completion,screen pipe completion and horizontal well completion)are summarized and analyzed,it is found that safe,economic and efcient development of CBM is inseparable from the support of advanced ***,based on the current status of CBM development,the achievements,existing challenges and future prospects are summarized and discussed from the perspective of CBM DCTs.

关键词： Coalbed methane CBM Exploitation Drilling Completion Horizontal well L/U/V-shaped well Multilateral well

A New Selection Criterion of Loop-free Alternate Interface for IP Fast Rerouting

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China Communications 2010年第3期7卷 91-98页

作者： liu jinhua Wang Yahong Du Shuai Institute of Information Photonics and Optical Communications Beijing University of Posts and Telecommunica tions Beijing 100876 P. R. China Leadcore Technology Co. Ltd Shanghai 200233 P. R. China 3China Academy of Telecommunication Technologies Beijing 100083 P. R. China China Academy of Telecommunication Technologies Beijing 100083 P. R. China University of Science and Technology Beijing Beijing 100191 P. R. China

As the technology of IP Fast Rerouting (FRR) become mature and the related methods and specifi cation such as RFC5286 accepted as standard, it is expected that IP FRR will be deployed gradually and will enhance the survivability of IP network. This paper presents a different method for computing the Loop-free Alternate Interfaces. The new algorithm can be referred as "Next-Hop Cost Decrease (NHCD)" criterion. Compared with the RFC5286 LFA method, NHCD can handle both the simultaneous link failure and node failure, including multi-link failures. It has less computational complexity and can be used uniformly in the Traffi c Engineering and Network Recovery. However, NHCD is somewhat lower than the LFA method on recovery ratio of single link failure. After a formal description of NHCD criterion and a proof of loopfree alternates, the paper presents the simulation results of NHCD.

关键词： IP fast rerouting loop-free alternates descending cost for next-hop network survivability

Assessment of vaccination strategies against highly pathogenic avian influenza in China

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Frontiers of Agricultural Science and Engineering 2014年第4期1卷 277-281页

作者： Honglei SUN jinhua liu Key Laboratory of Zoonosis of Ministry of Agriculture College of Veterinary MedicineChina Agricultural UniversityBeijing 100193China

Vaccination for highly pathogenic avian influenza(HPAI)has been implemented in China for a decade,however,the virus is still present in poultry.A series of recombinant vaccines,Re-1 to Re-7,have been developed and used,and Re-8 will also be used in clinical settings to prevent the prevailing flu *** question remains,when can China eradicate the disease?Here,we review the epidemiology of H5 HPAI along with the development,usage and problems of *** suggestions for controlling the disease in China are provided.

关键词： highly pathogenic avian influenza vaccine vaccination control

Iron-catalyzed benzylation of 1,3-dicarbonyl compounds by simple toluene derivatives

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Chinese Science Bulletin 2012年第19期57卷 2382-2386页

作者： PAN ShiGuang liu jinhua LI YuanMing LI ZhiPing Department of Chemistry Renmin University of ChinaBeijing 100872China

An iron-catalyzed oxidative C-C bond formation by the reactions of simple toluene derivatives with 1,3-dicarbonyl compounds is developed.A benzylic radical addition to a benzoylmethanato iron species is proposed for t... 详细信息

关键词：二羰基化合物苯衍生物催化氧化苄基铁自由基

Microstructure of premixed propane/air flame in the transition from laminar to turbulent combustion

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Chinese Science Bulletin 2007年第5期52卷 685-691页

作者： CHEN XianFeng SUN jinhua liu Yi liu XuanYa CHEN SiNing LU ShouXiang State Key Laboratory of Fire Science University of Science and Technology of China Hefei 230026 China

In order to explore the flame structure and propagation behavior of premixed propane/air in the transi-tion from laminar to turbulent combustion, the high speed camera and Schlieren images methods were used to record the photograph of flame propagation process in a semi-vented pipe. Meanwhile, the super-thin thermocouple and ionization current probe methods were applied to detect the temperature distribution and reaction intensity of combustion reaction. The characteristics of propane/air flame propagation and microstructure were analyzed in detail by the experimental results coupled with chemical reaction thermodynamics. In the test, the particular tulip flame behavior and the formation process in the laminar-turbulent transition were disclosed clearly. From the Schlieren images and iron current results, one conclusion can be drawn that the small-scale turbulent combustion also appeared in laminar flame, which made little influence on the flame shape, but increased the flame thickness obviously.

关键词：丙烷/空气预混火焰火焰结构层流焰紊流燃烧过渡可燃气体爆炸

Multi-site occupancies and luminescence properties of cyan-emitting Ca_(9-x)NaGd_(2/3)(PO_(4))_(7):Eu^(2+)phosphors for white light-emitting diodes

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Journal of Rare Earths 2022年第2期40卷 243-252,I0003页

作者： Shihua liu Bin Deng Junhui Yang jinhua liu Jun Chen Fanhua Zeng Huanyou Wang Ruijin Yu Gongguo Zhang College of Chemistry&Pharmacy Northwest A&F UniversityYangiing 712100China College of Chemistry&Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043China Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application Chenzhou 423043China Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials College of Materials and Chemical EngineeringChina Three Gorges UniversityYichang 443002China Department of Chemistry and Chemical Engineering Jining UniversityQufir 273155China

Cyan-emitting Ca_(9)NaGd_(2/3)(PO_(4))_(7):Eu^(2+)phosphors were synthesized via high temperature solid-state route.X-ray powder diffraction(XRD)and scanning electron microscopy(SEM)were used to verify the phase and morphology of the Ca_(9)NaGd_(2/3)(PO_(4))_(7):Eu^(2+)(CNGP:Eu^(2+))*** as-obtained phosphor exhibits a broad excitation band of 250-420 nm,which is near the ultraviolet *** intense asymmetric cyan emission at 496 nm corresponds to the 5 d-4 f transition of Eu^(2+).The multiplesite luminescent properties of Eu^(2+)ions in CNGP benefit from versatile structure ofβ-Ca3(PO4)2 *** effective energy transfer distance is 5.46 nm(through the spectral overlap calculation),validating that the resonant energy migration type is via dipole-dipole interaction *** to the initial one at room temperature,the luminescent intensity of CNGP:Eu^(2+)phosphor can maintain 77%as it is heated up to 420 K.A white light-emitting diode(WLED)with excellent luminesce nt properties was successfully ***,the CIE chromaticity coordinates of fabricated WLED driven by changing current just change slightly.

关键词： Phosphate Luminescence Eu^(2+)ion Ca_(9-x)NaGd_(2/3)(PO_(4))_(7) Rare earths

Late Glacial glacier-climate modeling in two valleys on the eastern slope of Samdainkangsang Peak, Nyaiqentanggulha Mountains

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Science China Earth Sciences 2017年第1期60卷 135-142页

作者： XU XiangKe DONG GuoCheng PAN BaoLin HU Gang BI WeiLi liu jinhua YI ChaoLu Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 China state Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi 'an 710061 China College of Resources Environment and Tourism Capital Normal University Beijing 100048 China

Well-preserved Late Glacial moraines in the Barenduo and Yuqiongqu valleys on the eastern slope of the Samdainkangsang Peak present an opportunity to reconstruct glacier extents and examine the character of the climate during the Late Glacial stage in the Nyaiqentanggulha Mountains. This study employs a coupled mass-balance and ice-flow model to reconstruct the glacier extents in the two valleys and assess the magnitudes of temperature and precipitation change during the Late Glacial period. Model results indicate that during the Late Glacial, the Barenduo valley contained an ice volume of 1.67x 108 m3, with the equilibrium-line altitude （ELA） being -5500 m asl; and the Yuqiongqu valley had an ice volume of 5.56x 108 m3, with the ELA being -5470 m asl. A climate scenario, temperature depression of 2.6-2.8°C and 60-70%, percent of modern （1981-2010） precipitation, can sustain both of the Late Glacial glacier extents in the two valleys. A 50% increase or decrease from modern precipitation would have been coupled with the respective Late Glacial temperature depressions of 1.6 and 3.0°C in the Barenduo valley, and 2.1 and 2.8°C in the Yuqiongqu valley.

关键词： Glacier-climate modeling Late Glacial Glacier extent Paleoclimate Samdainkangsang Peak