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Growth of single crystal K_3Y_3(BO_3)_4 with low-symmetry structure and multi-type of substitutional sites

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Rare Metals 2015年第6期34卷 421-425页

作者： jian-hua gao Shuai Li Li-Mei Song jian Li Yun Wan Department of Physics Northwest University Department of Chemistry Xi’an University of Arts and Science

Single crystals of K3Y3（BO3）4 were grown using the KBO2, LiF, and Li2CO3 as the fluxes by the top-seed solution method. The K3Y3（BO3）4 can be an excellent host for doping of Yb3＋, because there are six low-symmetric yttrium atoms in one unit-cell of K3Y3（B 03）4. The growth of K3Y3（BO3）4 was studied in detail, and a good crystal with sizes of 24 mm × 15 mm× 8 mm was grown successfully below 900 ℃. Some characteristics, such as the X-ray dif- fraction, infrared spectroscopy, and thermal analysis, were also performed.

关键词： Borate Single crystal growth Laser crystal yb3+

Recent developments in chiral and spin polarization effects in heavy-ion collisions

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Nuclear Science and Techniques 2020年第9期31卷 53-74页

作者： jian-hua gao Guo-Liang Ma Shi Pu Qun Wang Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and PhysicsInstitute of Space SciencesShandong UniversityWeihai 264209China Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China

We give a brief overview of recent theoretical and experimental results on the chiral magnetic effect and spin polarization effect in heavy-ion *** present updated experimental results for the chiral magnetic effect and related *** time evolution of the magnetic fields in different models is *** newly developed quantum kinetic theory for massive fermions is *** present theoretical and experimental results for the polarization of K hyperons and the q00 value of vector mesons.

关键词： Relativistic heavy-ion collisions Chiral magnetic effect Chiral kinetic theory Spin polarization

Compressed wormlike chain moving out of confined space: A model of DNA ejection from bacteriophage

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Acta Mechanica Sinica 2012年第4期28卷 1219-1226页

作者： Ji-Zeng Wang Long Li hua-jian gao Key Laboratory of Mechanics on Disaster and Environment in Western China Ministry of EducationSchool of Civil Engineering and MechanicsLanzhou UniversityLanzhou730000 GansuChina School of Engineering Brown UniversityProvidence02912 Rhode IslandUSA

The molecular biomechanics of DNA ejection from bacteriophage is of interest to not only fundamental biological understandings but also practical applications such as the design of advanced site-specific and controllable drug delivery systems. In this paper, we analyze the viscous motion of a semiflexible polymer chain coming out of a strongly confined space as a model to investigate the effects of various structure confinements and frictional resistances encountered during the DNA ejection process. The theoretically predicted relations between the ejection speed, ejection time, ejection length, and other physical parameters, such as the phage type, total genome length and ionic state of external buffer solutions, show excellent agreement with in vitro experimental observations in the literature.

关键词： DNA ejection Bacteriophage. Wormlike chain model Confined semi-flexible polymer. Drag coefficient

A key factor to the spin parameter of uniformly rotating compact stars: crust structure

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Research in Astronomy and Astrophysics 2016年第4期16卷 63-70页

作者： Bin Qi Nai-Bo Zhang Bao-Yuan Sun Shou-Yu Wang jian-hua gao Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space Sciences Shandong University School of Nuclear Science and Technology Lanzhou University Key Laboratory of Special Function Materials and Structure Design Ministry of Education

We study the dimensionless spin parameter j ≡ cJ/（GM2） of different kinds of uniformly rotating compact stars, including traditional neutron stars, hyperonic neutron stars and hybrid stars, based on relativistic mean field theory and the MIT bag model. It is found that j ~ 0.7, which had been suggested in traditional neutron stars, is sustained for hyperonic neutron stars and hybrid stars with M 〉 0.5 MG. Not the interior but rather the crust structure of the stars is a key factor to determine jmax for three kinds of selected compact stars. Furthermore, a universal formula j = 0.63（f/fK） -- 0.42（f/fK）2 ＋ 0.48（f/fK）z is suggested to determine the spin parameter at any rotational frequency f smaller than the Keplerian frequency fK.

关键词： stars: neutron -- stars: rotation -- spin parameter-- equation of state -- methods: numerical

Sediment dynamics in an offshore tidal channel in the southern Yellow Sea

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International Journal of Sediment Research 2014年第2期29卷 246-259页

作者： Wen-fei NI Ya-ping WANG Xin-qing ZOU Ji-cai ZHANG jian-hua gao School of Geographic and Oceanographic Sciences Nanjing University Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Ministry of Land and Resources School of Geographic and Oceanographic Sciences Nanjing University

The geomorphology of the southern Yellow Sea(SYS) is characterized by offshore radial sand ridges(RSR).An offshore tidal channel(KSY Channel) is located perpendicular to the coast,comprised of a main and a tributary channel separated by a submarine sand ridge(KSY Sand Ridge) extending *** order to investigate the interactions among water flow,sediment transport,and topography,current velocity and suspended sediment concentration(SSC) were observed at 11 anchor stations along KSY Channel in RSR during a spring tide *** resolution bottom topography was also *** currents and tidally averaged suspended sediment fluxes were calculated and analyzed by using the decomposition *** suggested that the water currents became stronger landward but with asymmetrical current speed and temporal duration of flood and ebb *** currents showed landward water transport in the nearshore channel and a clockwise circulation around the KSY Sand ***-averaged SSC also increased landward along the *** main mechanisms controlling SSC variations were resuspension and horizontal advection,with spatial and temporal variations in the channel,which also contributed to sediment redistribution between channels and sand *** flow transport and the tidal pumping effect dominated the suspended sediment flux in the KSY *** KSY Sand Ridge had a potential southward migration due to the interaction between water flow,sediment transport,and topography.

关键词： Tidal channel Sand ridge Suspended sediment concentration Flux decomposition Southern Yellow Sea

Rapid changes of sediment dynamic processes in Yalu River Estuary under anthropogenic impacts

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International Journal of Sediment Research 2012年第1期27卷 37-49页

作者： jian-hua gao Jun LI Harry WANG Fen-long BAI Yan CHENG Ya-ping WANG Key Laboratory for Coast and Island Development of Ministry of Education Nanjing University Qingdao Institute of Marine Geology Virginia Institute of Marine Science Gloucester PointVA 23062United States Prof. School of Urban Construction East Liaoning University 5. Key Laboratory for Coast and Island DevelopmentMinistry of EducationNanjing University

The response of the Yalu River Estuary to human activities was *** of sediment dynamics during the past 10 years were explored through hydrodynamic calculation,as well as heavy mineral and grain size *** addition,the characteristics of estuarine geomorphological evolution were compared with historical *** long-term sediment dynamic process and geomorphological evolution were primarily affected by the decrease of water discharge and sediment supply resulting from human *** entire estuarine system of Yalu River Estuary has also undergone significant changes since 1941 that are associated with water reduction and sediment discharge affected by construction *** estuary eventually formed the current patterns in the *** with variations of water and sediment discharge,sand dredging directly affected the estuarine sediment dynamics in the past 10 *** from six hydrodynamic stations measured in 2009 indicated that the bedload transport flux has substantially decreased during a tidal cycle compared with that surveyed in *** bedload transport direction also changed from seaward in 1996 to landward in *** addition,the estuarine bed load movement changes were:(a) sediment from areas with water depth being less than 5 m was transported from the sea towards the land;(b) sediment transport from areas with water depth between 5 to 20 m was oriented towards the sea;and (c) sediment from areas with water depth greater than 20 m was conveyed from the sea towards the land.

关键词： Sediment dynamics Geomorphology Human activities Yalu River Estuary

Revisiting the spin effects induced by thermal vorticity

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Chinese Physics C 2024年第5期48卷 194-208页

作者：高建华杨诗正 Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and PhysicsShandong UniversityWeihai 264209China Institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation(MOE)Shandong UniversityQingdao 266237China

We revisit the spin effects induced by thermal vorticity by calculating them directly from the spin-dependent distribution *** spin-1/2 particles,we provide the polarization up to the first order of thermal vorticity and compare it with the usual results calculated from the spin *** spin-1 particles,we show that all the non-diagonal elements vanish and there is no spin alignment up to the first order of thermal *** present the spin alignment at second-order contribution from thermal *** also show that the spin effects for both Dirac and vector particles receive an extra contribution when the spin direction is associated with the momentum of the particle.

关键词： relativistic heavy ion collisions global polarization quark gluon plasma

Regulating motor force in skeletal muscle contraction

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Regulating motor force in skeletal muscle contraction

Role of free fatty acids in proliferation of rat hepatic stellate cells(Ⅱ)

第十届全国生物力学学术会议暨第十二届全国生物流变学学术会议

作者： Bin Chen hua-jian gao Department of Engineering Mechanics Zhejiang University School of Engineering Brown University

This is a brief summary of our previous work on skeletal muscle *** the behavior of individual myosin motor is stochastic in nature,it is intriguing how multiple motors can perform coordinated and synchronous actions,which plays important roles in various biological processes and has been studied mainly in skeletal muscle *** had been regarded that the force on each of the working motor changed in proportional to the actin filament load during skeletal muscle ***,recent experiments showed that

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World Journal of Gastroenterology 1998年第6期4卷 45-47页

作者： LU Lun Gen, ZENG Min De, LI Ji Qiang, hua Jing, FAN jian gao and QIU De Kai

AIM To study the role of free fatty acids (arachidonic acid and linoleic acid) in proliferation of rat hepatic stellate cells (HSC). METHODS HSC were isolated and cultured from liver of Wistar rats by in situ perfusion with pronase and collagenase, and density gradient centrifugation with Nycodenz. MTT colorimetric assay was detected for HSC proliferation. RESULTS Arachidonic acid and linoleic acid had an effect on proliferation of HSC. Arachidonic acid of 25mg/L promoted HSC proliferation ( P 0 05), but with concentration increasing, 50 and 100mg/L of linoleic acid might promote HSC proliferation ( P <0 05 or 0 01). CONCLUSION Arachidonic acid and linoleic acid may promote HSC proliferation, but increased concentration can have cytotoxity on HSC. Arachidonic acid and linoleic acid might be associated with fatty liver and hepatic fibrogenesis by lipid peroxidation.

关键词： hepatic stellate cell free fatty acids arachidonic acid linoleic acid cell proliferation