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Search Results: 1 - 10 of 139151 matches for " Mohana Sundaram K "
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Optimal Power Flow Using Firefly Algorithm with Unified Power Flow Controller  [PDF]
T. Hariharan, K. Mohana Sundaram
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78168
Abstract: Firefly algorithm is the new intelligent algorithm used for all complex engineering optimization problems. Power system has many complex optimization problems one of which is the optimal power flow (OPF). Basically, it is minimizing optimization problem and subjected to many complex objective functions and constraints. Hence, firefly algorithm is used to solve OPF in this paper. The aim of the firefly is to optimize the control variables, namely generated real power, voltage magnitude and tap setting of transformers. Flexible AC Transmission system (FACTS) devices may used in the power system to improve the quality of the power supply and to reduce the cost of the generation. FACTS devices are classified into series, shunt, shunt-series and series-series connected devices. Unified power flow controller (UPFC) is shunt-series type device that posses all capabilities to control real, reactive powers, voltage and reactance of the connected line in the power system. Hence, UPFC is included in the considered IEEE 30 bus for the OPF solution.
CORH 3 - A Short Duration Non aromatic rice hybrid
Thiyagarajan K,Manonmani S,Robin S,Mohana Sundaram K
Electronic Journal of Plant Breeding , 2009,
Abstract: The new early maturing rice hybrid CORH 3 is a combination of TNAU CMS 2A and CB 87R. This hybrid matures in 115days. The hybrid was found to produce on an average 7.2 tonnes per hectare which was more than 12% higher than thehybrid checks, ADTRH 1 and KRH2, and more than 25% higher than the variety checks, ADT 43 and ADT 39. The hybridproduces good quality rice possessing intermediate amylose, soft gel consistency, and good linear elongation on cooking. Ithas white, non-sticky, non-aromatic rice which tastes good and has been well accepted by the consumers. Besides, the hybridCORH3 is tolerant to Rice Tungro Disease (RTD) and blast. It is also resistant to Green Leaf Hopper (GLH) and tolerant toBrown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH)
Development of new TGMS lines with good floral traits in rice
K. Thiyagarajan, S. Manonmani, D. Malarvizhi, S. Robin, R. Pushpam and K. Mohana Sundaram
Electronic Journal of Plant Breeding , 2010,
Abstract: Two-line breeding in exploitation of thermo-sensitive genic male sterile system is pursued with the objective ofdevelopment of hybrids with high heterotic potential. A total of 66 new TGMS lines were developed and screenedunder sterility favoring environment for tgms gene expression during summer and sterility limiting environment duringwinter at Paddy Breeding Station, Coimbatore for the past five years. Out of 66 TGMS lines, 15 lines showed stableperformance and seven TGMS lines viz., COTGMS 02, COTGMS 07, COTGMS 10, COTGMS 11, COTGMS 12,COTGMS 13 and COTGMS 15 were completely pollen sterile throughout the summer period. These lines had widersterility expression period with very good floral traits viz., higher pollen sterility per cent, panicle and stigma exsertionper cent, wider glume opening favorable for enhanced out-crossing rate and seed set percentage during seed production.
Breeding three line rice hybrids with good grain quality
S. Manonmani*, D. Malarvizhi, S. Robin, M. Umadevi, M.Ameenal, R.Pushpam, K. Mohana Sundaram and K.Thiyagarajan
Electronic Journal of Plant Breeding , 2010,
Abstract: Studies were conducted on 20 rice hybrids with checks to assess the genetic variability, heritability and correlationamong the genotypes for fifteen grain quality characters and grain yield. Seeds collected from the thirteen hybridsand check varieties were used for grain quality analysis. To assess the cooking qualities, a total of 30 unbrokenmilled grains were measured for their length and breadth before cooking. After cooking the grains in water for 10minutes, they were cooked in boiling water for 20 minutes. The cooked grains were drained by placing on mottingpaper. The ratio of kernel length after cooking to kernel breath after cooking was expressed as kernel elongationratio. The linear elongation ratio and breadth-wise elongation ratio was calculated as ratio of kernal length aftercooking to kernal length and ratio of kernal breadth after cooking to kernel breadth respectively. The ratio of volumeexpansion and the increase in weight after cooking of the kernels was also recorded. The hybrids viz., TNRH 160,TNRH 180, TNRH 174, TNRH 173, TNRH 179 recorded medium slender grain type, high head rice recovery, highmilling percentage, high LER and low BER and intermediate GT. These hybrids are not having aroma which ispreferred by south Indians. Hence, these hybrids will be exploited.
Half-Sweep Geometric Mean Iterative Method for the Repeated Simpson Solution of Second Kind Linear Fredholm Integral Equations
Sundaram Muthuvalu,Mohana; Sulaiman,Jumat;
Proyecciones (Antofagasta) , 2012, DOI: 10.4067/S0716-09172012000100007
Abstract: in previous studies, the effectiveness of the half-sweep geometric mean (hsgm) iterative method has been shown in solving first and second kind linear fredholm integral equations using repeated trapezoidal (rt) discretization scheme. in this work, we investigate the efficiency of the hsgm method to solve dense linear system generated from the discretization of the second kind linear fredholm integral equations by using repeated simpson's ^ (rs1) scheme. the formulation and implementation ofthe proposed method are also presented. in addition, several numerical simulations and computational complexity analysis were also included to verify the efficiency of the proposed method.
Studies on in vitro Antibacterial, Antifungal Property and Antioxidant Potency of Murraya paniculata
Mohana Sundaram,Sivakumar,Karthikeyan,Bhuvaneshwari
Pakistan Journal of Nutrition , 2011,
Abstract: In this investigation, Murraya paniculata was analyzed for its antibacterial, antifungal and antioxidant properties. The antibacterial property of Murraya paniculata was studied against different bacteria include Escherichia coli, Proteus mirabilis, Salmonella typhi, Enterobacter aerogenes and Shigella flexineri and showed growth inhibition activity at concentrations ranging of 300-500 mg. The antifungal property of aqueous, ethanol and hexane extracts of Murraya paniculata was studied by agar well diffusion method and we observed that only at 500 mg, it showed positive inhibitory effect. The antioxidant effect of those extracts was also studied against a-tocopherol as a control. From the results, Ethanol extract at the concentration of 500 g/ml showed 67.77% antioxidant activity against 500 g/ml of a-tocopherol which showed 72.24% as a standard reference.
Half-Sweep Geometric Mean Iterative Method for the Repeated Simpson Solution of Second Kind Linear Fredholm Integral Equations
Mohana Sundaram Muthuvalu,Jumat Sulaiman
Proyecciones (Antofagasta) , 2012,
Abstract: In previous studies, the effectiveness of the Half-Sweep Geometric Mean (HSGM) iterative method has been shown in solving first and second kind linear Fredholm integral equations using repeated trapezoidal (RT) discretization scheme. In this work, we investigate the efficiency of the HSGM method to solve dense linear system generated from the discretization of the second kind linear Fredholm integral equations by using repeated Simpson's ^ (RS1) scheme. The formulation and implementation ofthe proposed method are also presented. In addition, several numerical simulations and computational complexity analysis were also included to verify the efficiency of the proposed method.
Parameter scaling in the decoherent quantum-classical transition for chaotic systems
Arjendu K. Pattanayak,Bala Sundaram
Physics , 2002, DOI: 10.1103/PhysRevLett.90.014103
Abstract: The quantum to classical transition has been shown to depend on a number of parameters. Key among these are a scale length for the action, $\hbar$, a measure of the coupling between a system and its environment, $D$, and, for chaotic systems, the classical Lyapunov exponent, $\lambda$. We propose computing a measure, reflecting the proximity of quantum and classical evolutions, as a multivariate function of $(\hbar,\lambda,D)$ and searching for transformations that collapse this hyper-surface into a function of a composite parameter $\zeta = \hbar^{\alpha}\lambda^{\beta}D^{\gamma}$. We report results for the quantum Cat Map, showing extremely accurate scaling behavior over a wide range of parameters and suggest that, in general, the technique may be effective in constructing universality classes in this transition.
T3P- A Novel Catalyst for Aza-Diels-Alder Reaction: One-Pot Synthesis of Pyrano[3,2-c]quinolines and furano[3,2-c]quinolines
T. S. R. Prasanna,K. Mohana Raju
Journal of Chemistry , 2011, DOI: 10.1155/2011/565021
Overview of P-glycoprotein inhibitors: a rational outlook
Kale Mohana Raghava Srivalli,P. K. Lakshmi
Brazilian Journal of Pharmaceutical Sciences , 2012, DOI: 10.1590/s1984-82502012000300002
Abstract: P-glycoprotein (P-gp), a transmembrane permeability glycoprotein, is a member of ATP binding cassette (ABC) super family that functions specifically as a carrier mediated primary active efflux transporter. It is widely distributed throughout the body and has a diverse range of substrates. Several vital therapeutic agents are substrates to P-gp and their bioavailability is lowered or a resistance is induced because of the protein efflux. Hence P-gp inhibitors were explored for overcoming multidrug resistance and poor bioavailability problems of the therapeutic P-gp substrates. The sensitivity of drug moieties to P-gp and vice versa can be established by various experimental models in silico, in vitro and in vivo. Ever since the discovery of P-gp, the research plethora identified several chemical structures as P-gp inhibitors. The aim of this review was to emphasize on the discovery and development of newer, inert, non-toxic, and more efficient, specifically targeting P-gp inhibitors, like those among the natural herb extracts, pharmaceutical excipients and formulations, and other rational drug moieties. The applications of cellular and molecular biology knowledge, in silico designed structural databases, molecular modeling studies and quantitative structure-activity relationship (QSAR) analyses in the development of novel rational P-gp inhibitors have also been mentioned. Glicoproteína-p (P-gp), uma glicoproteína de transmembrana permeável, é um membro da superfamília (ABC) de cassete de gene de liga o de ATP que funciona especificamente como um carreador mediado pelo transportador de efluxo ativo primário. é amplamente distribuído por todo o corpo e apresenta uma gama diversificada de substratos. Diversos agentes terapêuticos vitais s o substratos para P-gp e sua biodisponibilidade é reduzida ou a resistência é induzida devido ao efluxo de proteínas. Portanto, os inibidores da P-gp foram explorados para a supera o da resistência a múltiplas drogas e problemas de biodisponibilidade deficiente dos substratos terapêuticos da P-gp. A sensibilidade das moléculas da droga à P-gp e vice-versa, pode ser estabelecida por vários modelos experimentais in silico, in vitro e in vivo. Desde a descoberta da P-gp, diversas pesquisas identificaram várias estruturas químicas como inibidores da P-gp. O objetivo deste presente estudo foi o de enfatizar a descoberta e desenvolvimento de inibidores mais novos, inertes, atóxicos e mais eficazes, visando especificamente os da P-gp, como aqueles entre os extratos vegetais, excipientes e formula es farmacêuticas, e outras mol
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