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Search Results: 1 - 10 of 23129 matches for " PAN Guang-Bi "
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大口鲇和鲇鱼血清蛋白质及同工酶的比较研究 Comparative Studies on Serum Proteins and Isozymes of Silurus meridionalis Chen and Silurus asotus L
邹桂伟,潘光碧,罗相忠,胡德高ZOU Gui-Wei,PAN Guang-Bi,LUO Xiang-Zhong,HU De-Gao
遗传 , 1997,
Abstract: 采用聚丙烯酰胺梯度凝胶垂直板电泳,分析了大口鲇和鲇鱼的血清蛋白质以及心脏、肝脏、眼和肌肉4种组织的EST及MDH同工酶。结果表明,大口鲇和鲇鱼的血清蛋白质均能分离出20条左右的谱带,两者既表现出相同的谱带,又表现出迁移率和含量都不同的带型。两者的EST和MDH同工酶在4种组织及血清中均能特异性地表达,存在明显的组织和物种特异性。本文认为肝脏是研究大口鲇和鲇鱼种群生化遗传结构与变异的理想材料,同时还探讨了两种鲇鱼的MDH同工酶位点。
Case Analysis on Two Low Vortexes Induced by Tibetan Plateau Shear Line
两次高原切变线诱发低涡活动的个例分析

TU Ni-ni,HE Guang-bi,
屠妮妮
,何光碧

高原气象 , 2010,
Abstract: Using the NCEP/NCAR reanalysis data,the shear line over the Tibetan Plateau(hereafter Plateau) from 4 to 6 July 2007 are diagnostically analyzed,and two low vortexes induced by the shear line which cause moderate rain in central Plateau,the results show that the perpendicular transportation term and the horizontal divergence and convergence terms have played a major role in the development of the two vortex,in the different stages of the development of vortex,which have different contributions. At the same ...
The Observational Analysis of Shear Line and Low Vortex over the Tibetan Plateau in Summer from 2000 to 2007
2000-2007年夏季青藏高原低涡切变线观测事实分析

HE Guang-bi,GAO Wen-liang,TU Ni-ni,
何光碧
,高文良,屠妮妮

高原气象 , 2009,
Abstract: 利用2000-2007年共计8年的逐日08:00和20:00 500 hPa高空资料,结合地面降水资料和TRMM资料,对高原低涡切变线进行了普查分析,获得了对高原低涡切变线活动的一些新的认识.(1)在青藏高原上,切变线活动比低涡活动更活跃.(2)21世纪初的8年间,低涡、切变线出现个数最多的在6月,最少的在9月.2002年和2006年分别是高原低值系统相对活跃和相对不活跃的年份.2006年川渝持续的高温干旱可能与高原低值系统活动不活跃有关.(3)低涡、切变线生成的源地分析表明,高原低涡、切变线主要出现在海拔高度较高和地形坡度陡峭的地区,高原加热和陡峭地形的动力作用可能是低涡、切变线形成的原因之一.(4)高原低涡、切变线不易移出高原.低涡移出,主要是伴随低涡切变线过程东移.(5)低涡、切变线经常相伴或相继出现,对高原及高原以东天气产生重要影响.
Study on Perturbing Method in Regional BGM Ensemble Prediction System
区域集合预报增长模繁殖扰动方法研究

XIAO Yu-hua,HE Guang-bi,CHEN Jing,DENG Guo,
肖玉华
,何光碧,陈静,邓国

高原气象 , 2011,
Abstract: 在建立区域AREM模式增长模繁殖(Breeding of Growing Modes, BGM)集合预报系统的基础上, 设计了静态扰动(初始随机扰动、 扰动限定)和动态扰动方法, 利用2008年7月20日强降水个例, 分析了不同类型扰动对强降水预报的影响。结果表明, 静态和动态扰动都对中尺度暴雨预报具有积极的作用, 扰动都不同程度地减少了漏报率。两种静态扰动对预报的改善集中在24 h降水预报, 动态扰动则对24 h和48 h降水预报都有不同程度的改进。两种静态扰动的区域性降水空报率、 漏报率相同, 而动态扰动的区域性强降水漏报率低于静态扰动, 同时, 区域性强降水空报率也较静态扰动略高。动态扰动一定程度地增大了集合预报的离散度。
The Observational Analysis of Atmospheric Boundary Layer Structure in East Part and Downstream of Tibetan Plateau
青藏高原东部及下游地区冬季边界层的观测分析

JIANG Xing-wen,LI Yue-qing,WANG Xin,ZHAO Xing-bing,HE Guang-bi,
蒋兴文
,李跃清,王鑫,赵兴炳,何光碧

高原气象 , 2009,
Abstract: The atmospheric boundary layer(ABL) structure in east part and downstream of Tibetan Plateau(TP) was investigated utilizing the intensifying radiosonde data in December 2007.The results indicate that there is a surface-based temperature inversion layer(SBTIL) with an average heights of 500 m at nighttime,and a mixed layer(ML) with the heights of 2000 m in east part of TP in winter.The water vapor and wind speed were well mixed in the ML,and there is a deeply humidity inversion layer(HIL) when the ML was mat...
HYDROGEN RECYCLING IN HL-1 TOKAMAK
HL-1托卡马克中的氢再循环

PENG LI-LIN,XU GUANG-BI,YUAN CHENG-JIE,CAO ZENG,HUANG KE-QIANG,ZHANG SHU-XUN,YAN DONG-HAI,
彭利林
,徐光碧,袁成杰,曹曾,黄克强,张述勋,严东海

物理学报 , 1992,
Abstract: 本文从粒子平衡方程出发,运用Howe的氢再循环模型,借助于设置在不同位置并经绝对校准的Hα探测器测得的信号强度等实验数据,研究了HL-1托卡马克放电中总体再循环系数随时间变化,并采用Ehrenberg定义的加料效率的概念来分析在不同壁和孔栏条件或各种工作气体情况下的壁抽吸和壁加料现象,用四极质谱仪观察并比较了不同等离子体放电后的粒子释放情况,较系统地研究了HL-1装置不同运行条件下的再循环现象及其对粒子约束特性的影响。
Study on Complex System Evaluation Method Based on PCA and Grey Relative Degree  [PDF]
Yongchun Li, Baowei Song, Jun Jiang, Guang Pan, Ming Chang
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.31002
Abstract: The complexity and limited data samples in evaluation of complex system are obstacles for traditional evaluation method. Based on Grey relative degree theory and principal components analysis (PCA) method, a novel systemic evaluation method is put forward in this paper. Firstly, standardization method is modified for evaluation objective, and the method includes expression (2) and (3). Secondly, for few schemes of complex system, grey relative degree, expression (5), is substituted for relation coefficient. At last, validity of the method is verified by evaluating 3 schemes of a type of UUV.
A New Operator Theory Similar to Pseudo-Differential Operators
Guang-Qing Bi,Yue-Kai Bi
Mathematics , 2010,
Abstract: We summarize and extend the correlative definitions and principles of abstract operators, discuss the relation between abstract operators and pseudo-differential operators, add several new algorithms, furthermore, develop the theory of partial differential equations with abstract operators, and then systematically expound the basic methods. By combining abstract operators with the Laplace transform, we can easily derive the explicit solution of initial value problem of linear higher-order partial differential equations for n-dimensional space, and establish the general theory of linear higher-order partial differential equations.
DMTB: A comprehensive online resource of 16S rRNA genes, ecological metadata, oligonucleotides, and magnetic properties of magnetotactic bacteria
Wei Lin,Bi Li,YongXin Pan
Chinese Science Bulletin , 2011, DOI: 10.1007/s11434-010-4275-0
Abstract: Magnetotactic bacteria (MTB) are of interest in microbiology, biomineralization, advanced magnetic materials, and bio-geosciences because of their ability to form highly ordered intracellular magnetic minerals. Great strides for MTB studies have been made in the past four decades. In this paper we complied the first internet-accessible database for MTB, Database of Magnestotactic Bacteria (DMTB). It contains information of 16S rRNA gene sequences, corresponding ecological metadata, oligonucleotides, and magnetic properties of MTB. The comprehensive information contained in DMTB will provide a very useful data resource for researchers from different disciplines. The website of DMTB is at http://database.biomnsl.com/.
Exact penalty decomposition method for zero-norm minimization based on MPEC formulation
Shujun Bi,Xiaolan Liu,Shaohua Pan
Mathematics , 2014,
Abstract: We reformulate the zero-norm minimization problem as an equivalent mathematical program with equilibrium constraints and establish that its penalty problem, induced by adding the complementarity constraint to the objective, is exact. Then, by the special structure of the exact penalty problem, we propose a decomposition method that can seek a global optimal solution of the zero-norm minimization problem under the null space condition in [M. A. Khajehnejad et al. IEEE Trans. Signal. Process., 59(2011), pp. 1985-2001] by solving a finite number of weighted $l_1$-norm minimization problems. To handle the weighted $l_1$-norm subproblems, we develop a partial proximal point algorithm where the subproblems may be solved approximately with the limited memory BFGS (L-BFGS) or the semismooth Newton-CG. Finally, we apply the exact penalty decomposition method with the weighted $l_1$-norm subproblems solved by combining the L-BFGS with the semismooth Newton-CG to several types of sparse optimization problems, and compare its performance with that of the penalty decomposition method [Z. Lu and Y. Zhang, SIAM J. Optim., 23(2013), pp. 2448- 2478], the iterative support detection method [Y. L. Wang and W. T. Yin, SIAM J. Sci. Comput., 3(2010), pp. 462-491] and the state-of-the-art code FPC_AS [Z. W. Wen et al. SIAM J. Sci. Comput., 32(2010), pp. 1832-1857]. Numerical comparisons indicate that the proposed method is very efficient in terms of the recoverability and the required computing time.
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