OALib Journal期刊

ISSN: 2333-9721




2017 ( 489 )

2016 ( 1057 )

2015 ( 14258 )

2014 ( 18767 )


匹配条件: “Muthulakshmi A” ,找到相关结果约460011条。
Muthulakshmi A,Jothibai Margret R,Mohan V.R
International Research Journal of Pharmacy , 2013,
Abstract: The aim of the present study was to evaluate the antidiabetic Potential of ethanol extract of Feronia elephantum Correa leaf and bark in normal and alloxan induced diabetic rats. Diabetes was induced in Albino rats by administration of alloxan monohydrate (150 mg/kg). The ethanol extract of F. elephantum leaf and bark at a dose of 400mg/kg of body weight was administered separately at a single dose per day to diabetes induced rats for a period of 14 days. The effect of ethanol extract of F. elephantum leaf and bark on blood glucose, serum lipid profile, the levels of lipid peroxides and antioxidant enzymes, such as catalase, superoxide dismutase, glutathione peroxidase and reduced glutathione were examined. Oral administration of F. elephantum leaf and bark extract to diabetic rats for 14 days significantly reduced the levels of blood glucose, lipid parameters except HDL-C and lipid peroxidation, but increased the activities of plasma insulin and antioxidant enzymes. Ethanol extract of F. elephantum supplementation is useful in controlling the blood glucose level, improves the plasma insulin and lipid metabolism. It is beneficial in preventing diabetic complication from lipid peroxidation and antioxidant system in experimental diabetic rats; therefore, it could be useful for prevention or early treatment of diabetes mellitus.
Enabling Data Security for Collective Records in the Cloud
Ass.Prof. Muthulakshmi,Mr. Ahamed Yaseen A,,Mr.SanthoshKumar D,,Mr.Vivek M
International Journal of Recent Technology and Engineering , 2013,
Abstract: Cloud computing is a computing paradigm in which tasks are assigned to a combination of connections, software and services that can be accessed over internet. A major advantage of a cloud computing is enabling the distributed or remote access from known or unknown machines at any time. While Accessing the Cloud Services, the data owner faces a lot of issues related to security services (while sharing their data). To overcome these security issues, we provide automated – decentralized mechanism to capture and monitor the every usage of the users from various location. In this paper, we proposed a logging mechanism to keep track of the actual usage of the system. We leverage the jar file mechanism to ensure any data access will trigger authentication and automated logging mechanism. To consolidate user’s control, we provide distributed auditing mechanisms, we also provide comprehensive experimental studies that demonstrate the efficiency and effectiveness of the proposed approaches.
Depigmented neurofibroma
Premalatha S,Muthulakshmi R
Indian Journal of Dermatology, Venereology and Leprology , 1992,
Interval criteria for oscillation of second-order impulsive differential equation with mixed nonlinearities
Velu Muthulakshmi,Ethiraju Thandapani
Electronic Journal of Differential Equations , 2011,
Abstract: We establish sufficient conditions for the oscillation of all solutions to the second-order impulsive differential equation $$displaylines{ ig(r(t)x'(t)ig)'+p(t)x'(t)+q(t)x(t)+sum_{i=1}^n q_i(t)|x(t)|^{alpha_i}hbox{sgn} x(t)=e(t),quad t eq au_k,cr x({ au_k}^+)=a_k x({ au_k}),quad x'({ au_k}^+)=b_k x'({ au_k}). }$$ The results obtained in this paper extend some of the existing results and are illustrated by examples.
A New Front End Capacitive Converter Fed Switched Reluctance Motor for Torque Ripple Minimization  [PDF]
S. Muthulakshmi, R. Dhanasekaran
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.75050
Abstract: This paper presents new converter for torque ripple minimization of three phases Switched Reluctance Motor (SRM). The proposed converter has basic passive circuit which includes two diodes and one capacitor to the front end of an asymmetric converter with a specific end goal to get a high magnetization and demagnetization voltage. In view of this boost capacitor, the charge and demagnetization voltage are higher. Accordingly, it can reduce the negative torque generation from the tail current and enhance the output power. The proposed converter circuit is equipped for minimizing the SRM torque ripple furthermore enhancing the average torque when contrasted with traditional converter circuit. A three-phase SRM is modeled and the simulation output for no load and stacked condition depicts that the proposed converter has better performance when contrasted with traditional converter. It is appropriate for electric vehicle applications. The proposed framework is simulated by utilizing MATLAB/Simulink environment and their outcomes are examined extravagantly.
Advanced LEACH Protocol in Large Scale Wireless Sensor Networks.
International Journal of Engineering Sciences & Research Technology , 2013,
Abstract: As the use of wireless sensor networks (WSNs) has grown enormously in the past few decades, the need of scalable & energy efficient routing and data aggregation protocol for large scale deployments has also risen. LEACH is a hierarchical clustering protocol that provides an elegant solution for such protocols. One deficiency that affects the performance of the protocol is existence of very large and very small clusters in the network at the same time. This leads to the decrease in lifetime of WSNs. In this paper, the proposed and analyzed a new energy efficient clustering protocol (Improved FZ-LEACH) that eliminates the above problem by forming Far-Zone. Far-Zone is a group of sensor nodes which are placed at locations where their energies are less than a threshold. The communication between nodes and Sink is based on the energy consumption and the minimum distance. The communicating nodes only will be in active and the remaining nodes will be in sleep mode, to this sleep scheduling algorithm has been used. The simulation results and analysis show that proposed Improved FZ-LEACH algorithm outperforms LEACH in terms of energy consumption and network lifetime
A Comparative Study on the Sorption Characteristics of Pb(II) and Hg(II) onto Activated Carbon
N. Muthulakshmi Andal,V. Sakthi
Journal of Chemistry , 2010, DOI: 10.1155/2010/605285
The Effective Enhancement of Power System Security by Flexible Transmission Line Impedance with Minimal Rescheduling of Generators  [PDF]
Karuppasamy Muthulakshmi, R.M. Sasiraja, Selvarajan Mukesh Muthu
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.74033
Abstract: After the digital revolution, the power system security becomes an important issue and it urges the power producers to maintain a well secured system in order to supply a quality power to the end users. This paper presents an integrated Corrective Security Constrained Optimal Power Flow (CSCOPF) with Flexible Transmission Line Impedance (FTLI) to enhance the power system security. The corrective approach of SCOPF is chosen, because it allows the corrective equipment to bring back the system to a stable operating point and hence, it offers high flexibility and better economics. The concept of FTLI arises from the ability of FACTS devices such as Thyristor Controlled Series Capacitor (TCSC), which can vary the line reactance to a certain extent. An enhanced security can be achieved by incorporating FTLI into the CSCOPF problem, since the power flow in a system is highly dependent on the line reactance. FTLI based CSCOPF can reduce the amount of rescheduling of generators, but it will result in an increased number of variables and thus, the complexity to the optimization process is increased. This highly complex problem is solved by using nonlinear programming. The AC based OPF model is preferred, since the corrective security actions require highly accurate solutions. IEEE 30 bus system is used to test the proposed scheme and the results are compared with the traditional CSCOPF. It can be seen that the proposed idea provides a notable improvement in the reduction of cost incurred for restoring the system security.
The Phenomenal Alleviation of Transmission Congestion by Optimally Placed Multiple Distributed Generators Using PSO  [PDF]
Karuppasamy Muthulakshmi, Rajamanickam Manickaraj Sasiraja, Velu Suresh Kumar
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78145
Abstract: In the current electricity paradigm, the rapid elevation of demands in industrial sector and the process of restructuring are the main causes for the overuse of transmission systems. Hence, the evolution of novel technology is the ultimate need to avoid the damages in the available transmission systems. An appreciable volume of renewable energy sources is used to produce electric power, after the implementation of deregulation in power system. Even though, they are intended to improve the reliability of power system, the unpredictable outages of generators or transmission lines, an impulsive increase in demand and the sudden failures of vital equipment cause transmission congestion in one or some transmission lines. Generation rescheduling and load shedding can be used to alleviate congestion, but some cases require quite few improved methods. With the extensive application of Distributed Generation (DG), congestion management is also performed by the optimal placement of DGs. Therefore, this research employs a Line Flow Sensitivity Factor (LFSF) and Particle Swarm Optimization (PSO) for the determination of optimal location and size of multiple DG units, respectively. This proposed problem is formulated to minimize the total system losses and real power flow performance index. This approach is experimented in modified IEEE-30 bus test system. The results of N-1 contingency analysis with DG units prove the competence of this proposed approach, since the total numbers of congested lines get reduced from 15 to 2. Hence, the results show that the proposed approach is robust and simple in alleviating transmission congestion by the optimal placement and sizing of multiple DG units.
Isolation and Characterization of Microsatellite Loci in the Asian Rice Gall Midge (Orseolia oryzae) (Diptera: Cecidomyiidae)
Jagadish S. Bentur,Deepak Kumar Sinha,Ch. Padmavathy,Charagonda Revathy,Mayandi Muthulakshmi,Javaregowda Nagaraju
International Journal of Molecular Sciences , 2011, DOI: 10.3390/ijms12010755
Abstract: Microsatellite loci were isolated from the genomic DNA of the Asian rice gall midge, Orseolia oryzae (Wood-Mason) using a hybridization capture approach. A total of 90 non-redundant primer pairs, representing unique loci, were designed. These simple sequence repeat (SSR) markers represented di (72%), tri (15.3%), and complex repeats?(12.7%). Three biotypes of gall midge (20 individuals for each biotype) were screened using these SSRs. The results revealed that 15 loci were hyper variable and showed polymorphism among different biotypes of this pest. The number of alleles ranged from two to 11 and expected heterozygosity was above 0.5. Inheritance studies with three markers (observed to be polymorphic between sexes) revealed sex linked inheritance of two SSRs (Oosat55 and Oosat59) and autosomal inheritance of one marker (Oosat43). These markers will prove to be a useful tool to devise strategies for integrated pest management and in the study of biotype evolution in this important rice pest.

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