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匹配条件: “Maruthappan V” ,找到相关结果约130262条。
A report on the antioxidant activity of the powder of the entire plant of Phyllanthus reticulatus Poir
Maruthappan V,Shree K
International Journal of Green Pharmacy , 2010,
Abstract: In the present study, we determined the antioxidant activity of the entire plant of Phyllanthus reticulatus by performing different in vitro antioxidant assays, including 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) radical scavenging, β-carotene bleaching, superoxide anion radical scavenging, reducing power and metal chelating assay at different concentrations (100, 200 and 400 μg/ml). The entire plant powder of P. reticulatus shows good antioxidant activity of about 90.0% when compared with standard Butylated Hydroxy Toluene (BHT) (85%) at a concentration of 400 μg/ml. Results obtained reveal that methanolic extracts of entire plant of P. reticulatus possess higher antioxidant activity when compared with ethanolic extracts. Thus, this study suggests that P. reticulatus plant can be used as a potent source of natural antioxidants.
Effects of Phyllanthus reticulatus on lipid profile and oxidative stress in hypercholesterolemic albino rats
Maruthappan V,Shree K
Indian Journal of Pharmacology , 2010,
Abstract: Objective: This study was designed to investigate the effect of Phyllanthus reticulatus on lipid profile and oxidative stress in hypercholesterolemic albino rats. Materials and Methods: Hypercholesterolemia was induced in albino rats by administration of atherogenic diet for 2 weeks. Experimental rats were divided into different groups: normal, hypercholesterolemic control and P. reticulatus treated (250 and 500 mg/kg body weight doses for 45 days). After the treatment period of 45 th day triglyceride, VLDL-cholesterol, HDL-cholesterol, total cholesterol (TC), LDL-cholesterol and oxidative stress (protein carbonyl) were assayed and compared with hypercholesterolemic control. Results: The aqueous extract of P. reticulatus (250 mg and 500 mg/kg) produced significant reduction (P < 0.05) in triglyceride, VLDL-cholesterol, total cholesterol (TC), LDL-cholesterol and oxidative stress (protein carbonyl) while increased HDL-cholesterol in atherogenic diet-induced hypercholesterolemic rats at the end of the treatment period (45 days). However, the reduction in the above parameters was comparable with hypercholesterolemic control. Thus, aqueous extract of P. reticulatus is effective in controlling TC, lipid profile and oxidative stress in hypercholesterolemic animals. Conclusion: The results suggest the aqueous extract of P. reticulatus can be utilized for prevention of atherosclerosis in hypercholesterolemic patients.
V. Maruthappan,K. Sakthi Shree
Journal of Advanced Pharmaceutical Technology & Research , 2010,
Abstract: Haritaki (Terminalia chebula) family Combretaceae is an important plant used traditionally for medicinal purposes. It is component of the classic Ayurvedic combination called “Triphala”. Hyperlipidemia was induced by treated orally with atherogenic diet. In atherogenic diet induced hyperlipidemic model, the rats receiving treatment with Haritaki showed significant reduction in total cholesterol, triglycerides, total protein and elevation of high density lipoprotein cholesterol. Haritaki was found to possess significant hypolipidemic activity. The results also suggest that Haritaki at 1.05 and 2.10 mg/kg b.wt. concentrations are an excellent lipid-lowering agent.
Nonsmooth Optimization Algorithms in Some Problems of Fracture Dynamics  [PDF]
V. V. Zozulya
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.211073
Abstract: Mathematical statement of elastodynamic contact problem for cracked body with considering unilateral restrictions and friction of the crack faces is done in classical and weak forms. Different variational formulations of unilateral contact problems with friction based on boundary variational principle are considered. Nonsmooth optimization algorithms of Udzawa’s type for solution of unilateral contact problem with friction have been developed. Convergence of the proposed algorithms has been studied numerically.
Precessing Ball Solitons as Self-Organizing Systems during a Phase Transition in a Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.410A3010

Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition is induced by a magnetic field directed along the axis of anisotropy, while the action of the periodic field perpendicular to the main magnetic field has been analyzed. Under these conditions, the characteristics of arising equilibrium PBS are uniquely determined by the frequency of the periodic field, but the solitons with other frequencies are impossible. For such structure, the entropy increase connected with dissipation is compensated by the decrease of the entropy due to the external periodic field. It is shown that the equilibrium PBS are essentially the “self-organizing systems” that can arise spotaneously in a metastable state of ferromagnet.

Movement of Self-Organizing Solitons in Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.610155
Abstract: Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition induced by a magnetic field directed along the axis of anisotropy, while the additional action of high-frequency field perpendicular to the main magnetic field, are analyzed. It is shown that the spatial motion of solitons, associated with thermal fluctuations in the crystal, does not destroy the equilibrium of self-organized PBS.
Lα Line of Dark Positronium as a Nongravitational Detection of DM  [PDF]
V. Burdyuzha, V. Charugin
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.613187
Abstract: An attempt to predict the new atomic dark matter lines is done on the example of a dark lepton atom-positronium. Its Layman-alpha line with the energy near 3 GeV may be observable if the appropriate conditions are realized. For this we have studied a γ-ray excess in the center of our galaxy. In principle, this excess may be produced by the Lα line of a dark positronium in the medium with Compton scattering. The possibility of observations of an annihilation line (E~300 TeV) of dark positronium is also predicted. Other proposals to observe the atomic dark matter are shortly described. Besides, Hα line (1.3μ) of usual positronum must be observable in the direction on the center of our galaxy.
Randomization of Energy and Momentum in Statistical Mechanics  [PDF]
V. V. Paranjape
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.615223
Abstract: Particle-particle collisions in materials give rise to a particle distribution in energy and momentum in such a way that a most probable distribution is realized. I will show that an evaporating liquid generates a molecular imbalance in the equilibrium energy distribution. The molecular collisions by their inherent nature are able to repair the imbalance and in so doing it is shown that the liquids cool down. Similarly an external electric field creates substantial imbalance in the momentum distribution for the electrons in ionic semiconductors. Electron-electron collisions are able to restore the imbalance and as a consequence, similar to the evaporating liquid, the electron gas loses thermal energy and cools down.
Lorentz’s Transformations and Gravitation in the Granular Space Theory  [PDF]
V Konushko
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.26053
Abstract: Research into the read structure of space at ways leads to the conclusion on the existence of a privileged (absolute) system of reference, with all the equations remaining invariant about Lorentz’s transformations. The expansion of these transformations makes it possible to obtain easily the Schwarzshild matrix and, also, all the results of Einstein’s theory of gravity. The untangling of the physical meaning of velocity as a measure of relative deformation of elementary space cells eliminates, at last, all the paradoxes of Lorentz’s transformations and allows visual observation of the mechanism of gravity and Coulomb interaction in imaginary experiments.
Crustal Thickness of Funafuti Using Receiver Function Analysis  [PDF]
V. Srivardhan
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.410129

In this study, the characterization of the depth of the Mohorovicic discontinuity under the crust of Funafuti island was determined by analyzing the 3 component seismograms from 54 different earthquake events recorded by the station between 2008 and 2012. These seismograms were from teleseismic earthquakes whose epicenter lay at distances greater than 3000 km from the station. The seismograms were iteratively deconvolved in the time domain to remove the unwanted noise and then stacked to obtain better receiver functions. For analysis of the receiver functions, it was assumed that the range in which the Vp/Vs ratio would lie for the given region would be between 1.60 - 1.85 and the depth of the discontinuity was assumed to lie between 5 - 20 km. Analysis of the receiver functions showed that the Mohorovicic discontinuity was at a depth of 11 km and the Vp/Vs ratio was 1.75 for the region.


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