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Can a Correlation Ratchet Operate Under Spatial Symmetry and Temporal Symmetry ?

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Chinese Physics Letters 1998年第5期15卷 315-317页

作者： jia Ya li jia-rong Department of Physics Huazhong Normal UniversityWuhan 430079 Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

The simplest imaginable ratchet system which cantains two noises correlated with each other is *** is found that(1)the correlation between noises can induce transport,even when the ratchet potential is completely symmetric in space and the driving forcing is symmetric in time,and(2)the system can exhibit a current in either direction,and the direction can be controlled by the intensity of the correlation between noises.

关键词： symmetric system intensity

Influence of Random Potentials on the Current of the Molecular Motor Model

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Chinese Physics Letters 2001年第11期18卷 1431-1434页

作者： jia Ya li jia-rong Department of Physics Huazhong Normal UniversityWuhan 430079 Institute of Particle Physics:Huazhong Normal University Wuhan 430079

The current of the molecular motor model disturbed by random potentials, which involve the dichotomous and Ornstein-Uhlenbeck potentials, is studied using a finite-space correlation function. It is found that: (i) the amplitude and the correlation length of random potentials play opposing roles in the transport of the molecular motor model;(ii) a random potential with small amplitude and large correlation length is very useful in the molecular motor system.

关键词： function. disturbed Molecular

酒精含量对快速发酵醉椒风味物质及微生物群落组成的影响研究

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中国调味品 2024年第9期49卷 38-46页

作者：魏佳佳付钟杰罗娅莫晓慧贾利蓉段飞霞四川大学轻工科学与工程学院成都610065 四川大学食品科学与技术四川省高校重点实验室成都610056

醉椒是以高酒精度白酒(30%以上)和辣椒为主要原料,低盐慢速发酵的西南特色鲜辣、低刺激调味品。其发酵周期长,且发酵原理、风味特征和微生物群落组成不明,制约品质和安全性控制。文章研究发现15%以上白酒(60%)显著抑制醉椒发酵过程,6%... 详细信息

醉椒是以高酒精度白酒(30%以上)和辣椒为主要原料,低盐慢速发酵的西南特色鲜辣、低刺激调味品。其发酵周期长,且发酵原理、风味特征和微生物群落组成不明,制约品质和安全性控制。文章研究发现15%以上白酒(60%)显著抑制醉椒发酵过程,6%白酒发酵过快,酸味明显,质构变软;9%和12%为最适白酒添加范围,发酵30 d后pH稳定在3.5,总酸含量为13.93~15.92 g/kg,无酸味,无霉变,有清香味,咀嚼感良好;亚硝酸盐含量低于0.8 mg/kg,大肠菌群未检出。GC-MS结合16S rDNA、ITS高通量测序显示,真菌多样性高于细菌,克鲁维毕赤酵母、膜醭毕赤酵母、皱枝孢霉为优势真菌,黄曲霉、赭曲霉未检出,植物乳杆菌、肠膜明串珠菌为优势细菌;乳酸酯、萜类、糖醇、寡糖和鲜味氨基酸为醉椒特征风味物质。

关键词：醉椒酒精浓度快速发酵细菌群落组成真菌群落组成乳酸酯化

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大尺寸铟金属电极电催化还原二氧化碳制甲酸的实验研究

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应用化工 2024年第3期53卷 565-568页

作者：李佳蓉王强刘艺周朝晖长安大学水利与环境学院化工系陕西西安710054 长安大学旱区地下水文与生态效应教育部重点实验室陕西西安710054 长安大学水利部旱区生态水文与水安全重点实验室陕西西安710054

通过扩大H型反应器,利用面积超过100 cm 2的铟金属片和锡金属片电极电催化还原二氧化碳制甲酸。从二氧化碳还原反应产物的选择性、电解能力等方面进行了研究,得到了大尺寸金属电极反应器电催化制甲酸的优化方法。结果表明,进气流量40 mL... 详细信息

通过扩大H型反应器,利用面积超过100 cm 2的铟金属片和锡金属片电极电催化还原二氧化碳制甲酸。从二氧化碳还原反应产物的选择性、电解能力等方面进行了研究,得到了大尺寸金属电极反应器电催化制甲酸的优化方法。结果表明,进气流量40 mL/min和电流密度-3.0~-4.5 mA/cm^(2)区间及中性电解质为反应的最佳条件。

关键词：二氧化碳电催化甲酸铟片锡片

Calculation of Dielectric Function of a Quark-Gluon Plasma

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Communications in Theoretical Physics 2008年第6期49卷 1567-1572页

作者： jiaNG Bing-Feng li jia-rong Institute of Purticles Physics Centrul Chinu Normul University Wuhun 430079 China Department of Physics Hubei Institute for Nutionulities Enshi 445000 China

With the hard thermal loop （HTL） resummation technique, we calculate the dielectric function excited by hard gluon in quark-gluon plasma （QCP）. We find that in a section of the space-like region po/p ∈ [0.78, 0.95], there are two extremum structures on the dielectric function curve, while the dielectric function in the HTL approximation decreases monotonously without these properties. Through the analyses of the imaginary part of the dielectric function, we conclude that the character of the dielectric function in this region reflects effects of the Landau damping.

关键词： quark-gluon plasma dielectric function hard thermal loop effective perturbation theory

Influence of Width from Landau Damping on the Thermodynamic Potential in Quark-Gluon-Plasma

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Chinese Physics Letters 2000年第5期17卷 335-337页

作者： WANG Xin li jia-rong Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

By considering the Debye screening and the finite width of soft gluons,the effective two-loop thermodynamic potential in quark-gluon plasma was evaluated via real-time temperature quantum *** result that depends on damping rate of soft transverse gluons as a physical parameter is obtained,and extension of the case including the longitudinal gluon and fermion will be straightforward.

关键词： straight Landau quark

A Novel Phase Transition Phenomenon in Bistable System

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Chinese Physics Letters 1997年第4期14卷 245-247页

作者： jia Ya li jia-rong CHEN Yi-cheng Institute of Particle Physics Huazhong Normal UniversityWuhan 430070 CCAST(World Laboratory) P.O.Box 8730Beijing 100080 Department of Physics Huazhong Normal UniversityWuhan 430070

A bistable system driven by additive noise and multiplicative noise is studied,when the correlation time of the correlations between two noises is *** is found that the system undergoes a succession of two phase trans... 详细信息

关键词： noise Transition system

Colored Particle Acceleration by Fluctuations in Quark-Gluon Plasma

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Chinese Physics Letters 1998年第2期15卷 83-85页

作者： ZHENG Xiao-ping li jia-rong Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

The energy variation of a parton passing through a quark-gluon plasma(QGP)is discussed by taking into account nonlinear polarization *** is found that the parton can be accelerated by fluctuations in QGP,which gives a... 详细信息

关键词： effect. quark insight

Shear Viscosity of Hot QED at Finite Chemical Potential from Kubo Formula

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Communications in Theoretical Physics 2008年第8期50卷 429-436页

作者： liU Hui HOU De-Fu li jia-rong Department of Physics Jinan University Guangzhou 510632 China Institute of Particle Physics Central China Normal University Wuhan 430079 China

Within the framework of finite temperature field theory this paper discusses the shear viscosity of hot QED plasma through Kubo formula at one-loop skeleton diagram level with a finite chemical potential The effective widths (damping rates) are introduced to regulate the pinch singularities and then gives a reliable estimation of the shear viscous *** finite chemical potential contributes positively compared to the pure temperature case. The result agrees with that from the kinetics theory qualitatively.

关键词： shear viscosity QGP finite-temperature field theory chemical potential