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Charmed baryons circa 2015

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Frontiers of physics 2015年第6期10卷 23-49页

作者： hai-Yang cheng Institute of Physics Academia Sinica Taipei

This is essentially an update of Ref. [1] [H. Y. cheng, Int. J. Mod. Phys. A 24 （Suppl. 1）, 593 （2009）], a review of charmed baryon physics around 2007. Topics covered in this review include the spectroscopy, stro... 详细信息

关键词： charmed baryons spectroscopy decays of baryons chiral Lagrangian

Lattice Boltzmann Model for Compressible Fluid on a Square Lattice

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Chinese Physics Letters 2000年第10期17卷 743-745页

作者： SUN cheng-hai State Key Laboratory of Tribology Department of Engineering MechanicsTsinghua UniversityBeijing 100084

A two-level four-direction lattice Boltzmann model is formulated on a square lattice to simulate compressible flows with a high Mach number. The particle velocities are adaptive to the mean velocity and internal energy. Therefore, the mean flow can have a high Mach number. Due to the simple form of the equilibrium distribution, the 4th order velocity tensors are not involved in the calculations. Unlike the standard lattice Boltzmann model, o special treatment is need for the homogeneity of 4th order velocity tensors on square lattices. The Navier-Stokes equations were derived by the Chapman-Enskog method from the BGK Boltzmann equation. The model can be easily extended to three-dimensional cubic lattices. Two-dimensional shock-wave propagation was simulated.

关键词： equation. energy. lattice

Thermal Lattice Boltzmann Model for Compressible Fluid

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Chinese Physics Letters 2000年第3期17卷 209-211页

作者： SUN cheng-hai State Key Laboratory of Tribology Department of Engineering MechanicsTsinghua UniversityBeijing 100084

Wfe formulate a new thennal lattice Boltzmann model to simulate compressible flows with a high Mach *** main difference from the standard lattice Boltzmanii models is that the p&rticlc velocities are no longer a constantj varying with the mean velocity and internal *** proper heat conduction term in the energy equation is recovered by modiHcation of the fluctuating kinetic energy transported by *** simulation of Couette How is in good agreement with the analytical solutions.

关键词： particles. energy. lattice

Charge and Levitation of Grains in Plasma Sheath with Dust Thermic Emission

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Communications in Theoretical Physics 2005年第3X期44卷 547-550页

作者： WU hai-cheng The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education Beijing Normal University Beijing 100875 China Institute of Low Energy Nuclear Physics Beijing Normal University Beijing 100875 China Beijing Radiation Center Beijing 100875 China

By taking into account thermic emission current from hot dust surface, the problem involved in dust charging and levitation of dust grains in plasma sheath has been researched. The results are compared to that without including thermal emission current while the system parameters are same. It is found that the thermal emission current has played a significant role on modifying the dust charging and balance levitations. Both of the charging numbers of dust and the dust radius in balance are dramatically reduced. The stability of dust levitation is also analyzed and discussed.

关键词： dusty plasmas thermal radiation

Effects of soybean meal replacement with fermented alfalfa meal on the growth performance,serum antioxidant functions,digestive enzyme activities,and cecal microflora of geese

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Journal of Integrative Agriculture 2016年第9期15卷 2077-2086页

作者： YIN hai-cheng HUANG Jin College of Biological Engineering Henan University of Technology

Fermented forages are important feedstuffs. Bacillus subtilis inoculants are often used to improve the value of forage legume fermentation. The present work was conducted to study the effects of replacing soybean meal with solid-state fermented alfalfa meal（FAM） with B. subtilis ACCC 01746 on growth performance, serum antioxidant and digestive enzyme activities, and cecal microflora in goose. 300 healthy geese with similar body weights were randomly assigned to six treatment groups with five replicates of 10 geese（five males and five females） each. Geese were fed ad libitum for 35 days. Results showed that the geese fed with 4 and 8% FAM exhibited no significant effects on their final body weights（FBW） and average day gain（ADG）（P〉0.05）, whereas 12% or higher FAM caused poor growth of the geese compared with control diet（linear（L）： P〈0.05）. The average daily feed intake（ADFI）（quadratic（Q）： P〈0.05） and feed conversion ratio（FCR）（L： P〈0.05） with 8% or higher supplementation level were higher than those of the control group. The activities of antioxidant enzyme in serum increased, and the level of malondialdehyde（MDA） significantly decreased with increasing dietary FAM level（L： P〈0.05）. However, no significant differences were observed at 8% or lower supplementation level for glutathione peroxidase（GSH-Px） and superoxide dismutase（SOD）（P〉0.05） and at 4% for catalase（CAT） supplementation level compared with the control group. All diets containing FAM increased digestive enzyme activities in geese. However, geese fed diets with 12% FAM supplementation showed the highest trypsin activities in pancreas（Q： P〈0.05）. Supplementation with 12% or higher FAM significantly increased amylase activities in pancreas（L： P〈0.05） and duodenum（L： P〈0.05） compared with the control group. Significant differences were not observed in total anaerobic bacteria between geese fed with FAM and control diets on day 35（P〉0.05）. The numbers of Bifidobacterium and Lactobacillus in the cecum of geese

关键词： fermented alfalfa meal geese growth performance serum antioxidant enzyme digestive enzyme cecal microflora

Future Earth and Sustainable Developments

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The Innovation 2020年第3期1卷 50-51页

作者： hai cheng Institute of Global Environmental Change Xi'an Jiaotong UniversityXi'an 710054China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China Key Laboratory of Karst Dynamics MLRInstitute of Karst GeologyCAGSGuilin 541004China

Our planet has been undergoing continuous warming since the industrial revolution(1850 CE),such that its mean temperature has risen-1C,and continues to rise to the present *** is mainly due to human activity,particularly CO_(2) emissions,resulting in far-reaching and mostly irreversible consequences to the Earth's *** include dominant negative changes in the atmosphere,hydrosphere,lithosphere,cryosphere,and *** human influence has now overwhelmingly exceeded natural forces on a globe scale,some Earth scientists have proposed a geological epoch called the“Anthropocene”:a new epoch in the history of our planet,named after the significant influences of humanity on the globe.1 Indeed,our planet's climate is changing rapidly in the Anthropocene,and so climate change will become the defining challenge of our time,and its impacts will affect generations to come.

关键词： Earth epoch mostly

New Approach for Calculating Wigner Functions of Generalized Two-Mode Squeezed State and Squeezed Number State via Entangled State Representation

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Communications in Theoretical Physics 2001年第12期36卷 651-656页

作者： FAN Hong-Yi cheng hai-Ling Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

We construct the generalized squeezed vacuum state by virtue of the entangled state 〈η| [Fan Hongyi and J.R. Klauder, Phys. Rev. A47 (1994) 777] and derive the quantum fluctuation of the two-mode quadrature *** then calculate Wigner functions of the two-mode squeezed number states and generalized squeezing vacuum state in literature before.

关键词： Wigner function, generalized squeezed state, entangled state

Formation and impact-induced separation of tandem EFPs

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Defence Technology（防务技术） 2020年第3期16卷 668-677页

作者： Hong-bing Ma Yuan-feng Zheng hai-fu Wang Chao Ge cheng-hai Su State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

The formation and separation behaviors of tandem EFPs are studied by the combination of experiments and *** results show that different formation and separation processes can be obtained by adjusting the double-layer liners,and simulations agree with experiments ***,the interaction process between the two liners is discussed in details,and the formation and separation mechanism are *** can be found that there are four phases in the formation and separation processes,including impact phase,propulsion phase,slide phase and free flight *** the impact phase,the velocities of two liners rise in turns with kinetic energy *** the propulsion phase,the axial impact becomes insignificant,but the radial interaction between two liners influences the appearance of tandem ***,it should be mentioned that the inner surface of foregoing EFP remains to be in contact with the outer surface of following EFP in the propulsion phase,and the following one would continue to push the foregoing one for about 10μ to 20 μs,causing the velocities of following and foregoing EFPs gradually decreasing and increasing *** the slide phase,an obvious relative movement occurs between the two EFPs,and there would be barely kinetic energy ***,the two EFPs separate gradually and get into the phase of free ***,if the outer and inner liners have the same thickness,the outer copper-inner copper liners form two long EFPs,the outer copper-inner steel liners become a foregoing short steel EFP and a following long copper EFP,and the outer steel-inner copper liners produce a foregoing long copper EFP and a following conical steel *** addition,thickness match also has an important impact on formation appearance and separation process for both outer copperinner copper liners and outer steel-inner copper *** the thickness ratio of outer liner to inner liner decreasing,the length and length-diameter ratio of both foreg

关键词： Shaped charge Liner Tandem EFPs Formation Separation

Ion Acceleration in Laser-Plasma Interaction: Shock, Sheath, and Scaling

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Communications in Theoretical Physics 2009年第6期51卷 1125-1128页

作者： XIE Bai-Song WU hai-cheng Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education Beijing Normal University Beijing 100875 China College of Nuclear Science and Technology Beijing Normal University Beijing 100875 China

Some notes and comments on ion acceleration in laser-plasma interaction is given, in particular for the implication of shock, sheath and sealing. A simple model is proposed for ion acceleration by the combination of shock and sheath. The obtained scaling relations between the maximum ion energy and laser parameters （power, pulse duration） as well plasma parameter （plasma density）for example α PL 7/12 Eion,max α TL1/3 and Eion,max α ne2/3,are compared to the previous works. Some deficiencies and implications of model and results are discussed.

关键词： laser-plasma acceleration shock waves plasma sheaths