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Search Results: 1 - 10 of 38296 matches for " Ma Guang "
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In Silicon Cloning and Bioinformatics Analysis of the Raphanus Sativus WUS Gene  [PDF]
Ma Guang
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B104
Abstract:

The complete coding sequence ofRaphanus sativusWUS gene was obtained by usingArabidopsis thalianagene se-quence (NM_127349) as a probe in silico cloning. Then the hydrophilicity, secondary structure and advanced structure of WUS protein inRaphanus sativusare analyzed by using bioinformatics methods. The results show that the cDNA was 1298 bp, with no intron, contains an open reading frame of 936bp, encoding 312aa protein. The protein coded byRaphanus sativusgene showed 74% similarity toArabidopsis thaliana.

Symmetry breaking from Lorentz transformation
Bin-Guang Ma
Physics , 2005,
Abstract: Symmetry breaking is discussed in this paper which comes from the Lorentz transformation of special relativity and changes our view that two relatively moving bodies always have the relative speed equal in magnitude and opposite in direction. An appeal was made for the test of Lorentz transformation in a multimedia environment which has the fundamental significance that it may reveal the origin of symmetry breaking in many physical phenomena.
Hysteretic ac loss in a coated superconductor subjected to oscillating magnetic field: ferromagnetic effect and frequency dependence
Guang-Tong Ma
Physics , 2014, DOI: 10.1088/0953-2048/27/6/065011
Abstract: Numerical simulations of the hysteretic ac loss in a coated superconductor with a more realistic version of architecture were performed via finite-element technique in the presence of an oscillating magnetic field. The coated superconductor was electromagnetically modeled by resorting to the quasistatic approximation of a vector potential approach in conjunction with the nonlinear descriptions of the superconducting layer and ferromagnetic substrate therein by a power law model and the Langevin equation respectively. A diverse effect of the ferromagnetic substrate on the hysteretic ac loss, depending on the strength of the applied magnetic field, was displayed and its underlying cause was identified. The dependence of the hysteretic ac loss on the applied frequency is found to be related to a critical amplitude of the applied magnetic field, and the eddy-current loss dissipated in the metal coatings becomes prominent as the frequency augments merely at high applied magnetic fields.
Similarity Mechanics
Bin-Guang Ma
Physics , 2006,
Abstract: The present work provides a new conceptual framework for GUT (Grand Unified Theory) based on a picture of fractal universe. Under a hypothesis of multi-scaled matter structure, we find new clues for the conciliation of quantum and relativity and for the unification of fundamental interactions. A new interpretation for matter wave is proposed as the trajectory of position center of a moving particle with a nucleated structure. The origin of magnetism and gravitation are discussed as the relativistic effects of electrostatic force.
Simple Method for Preparing Glucose Biosensor Based on Glucose Oxidase in Nanocomposite Material of Single-Wall Carbon Nanotubes/Ionic Liquid  [PDF]
Weina Wang, Guang Yin, Xiuju Ma, Jun Wan
Journal of Analytical Sciences, Methods and Instrumentation (JASMI) , 2012, DOI: 10.4236/jasmi.2012.22011
Abstract: Based on electric conductivity and wide potential window of ionic liquid (IL) and electric property of single-wall car- bon nanotubes (SWCNTs), composite material of IL-SWCNTs was prepared, glucose sensor was built with this mate-rial for immobilizing glucose oxidase (GOx). It showed good response, sensitivity and stability for long time for glu-cose detection. Linear range for the detection of glucose was from 0.5 × 10–6 M to 12 × 10–6 M while detection limit was 6.26 × 10–8 M (S/N = 3).
Density-dependent photoabsorption cross sections of atomic Xe

Ma Xiao-Guang,

中国物理 B , 2009,
Abstract: The evolution of the photoabsorption cross sections of atomic xenon with number densities varying from ideal gas to condensed matter has been studied by an alternative view in the present work. The alternative expressions of the photoabsorption cross sections presented by Sun et al recently were used with the local field models that has proven to be generalized easily to multiatomic systems including molecules and condensed phase systems. The present results show that the variation of the photoabsorption cross sections of atomic xenon in the giant resonance region from the isolated to the condensed conditions is very small, which agrees well with the variation law of the solid and gas experiments.
An Application of Bilevel Programming Problem in Optimal Pollution Emission Price  [PDF]
Guang-Min Wang, Lin-Mao Ma, Lan-Lan Li
Journal of Service Science and Management (JSSM) , 2011, DOI: 10.4236/jssm.2011.43039
Abstract: Charging for the pollution is one of the ways to enhance the environmental quality. The appropriate price of the pollution emission is the most important question of the research on how to charge for the pollution. So, by constructing a bilevel programming model, we provide a novel way for solving the problem of charging for the pollution. In our model, the government (or the social regulation) chooses the optimal price of the pollution emission with consideration to firms’ response to the price. And the firms choose their optimal quantities of the production to maximize their profits at the given price of the pollution emission. Finally, a simple example is illustrated to demonstrate the feasibility of the proposed model.
Simultaneous Determination of Hydroquinone, Catechol and Resorcinol at Graphene Doped Carbon Ionic Liquid Electrode
Li Ma,Guang-Chao Zhao
International Journal of Electrochemistry , 2012, DOI: 10.1155/2012/243031
Abstract: A new composite electrode has been prepared with doping graphene into the paste consisting graphite and ionic liquid, n-octyl-pyridinum hexafluorophosphate (OPFP). This electrode shows an excellent electrochemical activity for the redox of hydroquinone (HQ), catechol (CC), and resorcinol (RS). In comparison with bare paste electrode, the redox peaks of three isomers of dihydroxybenzene can be obviously, simultaneously observed at graphene doping paste electrode. Under the optimized condition, the simultaneous determination of HQ, CC, and RS in their ternary mixture can be carried out with a differential pulse voltammetric technique. The peak currents are linear to the concentration of HQ, CC, and RS in the range form to , to , and to ?mol?L?1, respectively. The limits of detection are ?mol?L?1 for HQ, ?mol?L?1 for CC, and ?M for RS, respectively. 1. Introduction Catechol (CC), resorcinol (RS), and hydroquinone (HQ) are three isomers of dihydroxybenzene, which have been widely recognized as important environmental pollutants by the US Environmental Protection Agency (EPA) and the European Union (EU) due to their high toxicity and low degradability in the ecological environment [1]. The absorption of CC or HQ from the gastrointestinal tract can induce some disease such as renal tube degeneration and liver function decrease [2]. In addition, inhalation of high concentration of RS can directly lead to the death of human beings. Therefore, a highly sensitive and selective analytical method is necessary for the simultaneous determination of the three dihydroxybenzene isomers. Up to now, various methods have been exploited for the determination of the dihydroxybenzenes, such as high performance liquid chromatography (HPLC) [3, 4], spectrophotometry [5, 6] Electrochemiluminescence [7], synchronous fluorescence [8], gas chromatography/mass spectrometry [9], capillary electrochromatography [10], pH-based-flow injection analysis [11], and electrochemical methods [12–23]. Among these methods, electrochemical method is of particular interest due to its high sensitivity, low cost, good selectivity, and rapid detection. For most electrochemical methods, more attention is focused on the simultaneous determination of CC and HQ due to their redox peaks are overlapped at ordinary electrode [12–20]. However, the simultaneous determination of HQ, CC, and RS by electrochemical methods is few reported. Recently, a number of novel material-based electrochemical electrodes for detection of dihydroxybenzene isomers have been reported. For example, an enhanced electrochemical
Macro- and microscopic mechanical behaviour of flow of coal samples experimentally deformed at high temperatures and pressures
Junlai Liu,Guang Yang,Rui Ma
Chinese Science Bulletin , 2005, DOI: 10.1007/BF03184084
Abstract: Coal samples from Qinshui basin, Shanxi, China are experimentally deformed at temperatures and confining pressures of 200–500 °C and 200–500 Mpa, strain rate of 0.5 × 10 5/s and total strain of 10%. The vitrinite reflectance of the coal samples varies from 3.04 to 1.79. It is shown that the strengths of the deformed samples change obviously with coeval increasing temperatures and pressures (T/P). At the experimental range of T/P, the effects of increasing temperature predominate over that of increasing pressure. Microstructural analysis indicates a brittle to ductile transition under experimental T/P conditions from 200 to 300 °C, and 200 to 300Mpa. Brittle deformation microstructures include macroscopic fracture zones and penetrative fracture associations. Elongation, undulose or irregular extinction, deformation lamellae and dynamic recrystallization of grains are the main ductile deformation microstructures. The variation of deformation mechanisms of the experimentally deformed coal samples is related to both the components of coals and T/P conditions. At low T/P, fractures occur in both inertinite and vitrinite of the samples. At higher T/P, crystalline plastic deformations are observed in the inertinite only.
Impacts of Gender and Age on Behavioral Frequencies of Captive Musk Deer During Lactation
Guang Ma,Baocao Gong,Xiuxiang Meng
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.1265.1268
Abstract: Behavioral patterns of captive alpine musk deer were studied at Xinglongshan Musk Deer Farm (XMDF) in northwest China. Throughout the lactation season (August-October 2003), 13 behaviors categories were recorded for 30 female and 24 male alpine musk deer (Moschus sifanicus) to explore effects of gender and age-classes. Females had a higher frequency of resting, feeding, ruminating and affinitive behaviors than males, potentially due to the increased energy demands and influences of newborn fawns during lactation. Among females there was no effect of age-class on the behavioral patterns whereas, adult males displayed more frequent tail-pasting behavior and agonistic interaction than sub-adult males. The potential causative mechanisms for the behavioral differences were discussed.
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