Informatics Publishing Limited

B. Venkateswara Rao ¹, G. V. Nagesh Kumar ¹

Affiliations
1 GITAM University, Visakhapatnam, Andhra Pradesh, IN

Abstract

This paper presents a new Meta heuristic optimization algorithm called firefly algorithm (FA) used to solve the multi objective optimal power flow to identify the optimal setting of Static VAR Compensator (SVC) and optimal location is identified by using sensitivity analysis when the system is operating under normal and overloaded conditions. Sensitivity analysis based Voltage collapse proximity Index is proposed for placing the SVC at appropriate location under normal and over loaded conditions. Once the location to install SVC is identified, the optimal allocation of SVC is determined through firefly algorithm based A multi-criterion objective function comprising of four objectives minimize total power loss, minimize total voltage magnitude deviations, minimize the fuel cost of total generation and minimize the branch loading to obtain the optimal power flow. Simulations have been implemented in MATLAB and the IEEE 14-bus, IEEE 30-bus and IEEE 57-bus systems have been used as a case study. The results we have obtained indicate that installing SVC can significantly enhance the voltage stability of power system. Also for the purpose of comparison the proposed technique was compared with another optimization technique namely Genetic Algorithm (GA). The results we have obtained indicate that FA is an easy to use, robust, and powerful optimization technique compared with GA.

Keywords

Firefly Algorithm, Optimization, Static VAR Compensator, VCPI

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S. Vidyadhara ¹, R. L. C. Sasidhar ¹, B. Venkateswara Rao ¹, P. Ratna Kumari ¹

Affiliations
1 Chebrolu Hanumaiah Institute of Pharmaceutical Sciences, Chowdavaram, Guntur – 19, Andhra Pradesh, IN

Abstract

The aim of the present work is to develop a simple, accurate, precise and reproducible UV spectrophotometric method for the simultaneous determination of Tenofovir, Efavirenz and Lamivudine in bulk and pharmaceutical dosage form. The stock solutions of the standard drugs were prepared in methanol followed by the further required dilutions with distilled water. This method involves the formation and solving of simultaneous equations at 260nm, 347nm and 272 nm, as absorbance maxima of Tenofovir, Efavirenz and Lamivudine respectively. Beer's law obeyed the concentration range of 10 - 40mcg/mL, 5 - 20 mcg/mL and 5 - 20 mcg/mL for Tenofovir, Efavirenz and Lamivudine respectively. The results of analysis were validated statistically and by recovery studies. The % RSD for the recovery study was less than 2. The proposed method can be effectively used for the simultaneous estimation of these three drugs in bulk and combined tablet dosage form.

Keywords

Tenofovir, Efavirenz and Lamivudine, Simultaneous Equation Method, Method Validation.

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J. Mary Jasmine Victor ¹, B. Venkateswara Rao ¹, K. Ramesh Kumar ¹

Affiliations
1 Defence Research & Development Laboratory, Hyderabad - 500058, IN

Abstract

Tolerancing plays a vital role in design process. For aerospace components, any deviation beyond allowable limit can result in catastrophic failure.In this work, toleranceanalysis is performed to address axis misalignment due to tolerance stacking in flight vehicle components and allocation of optimal tolerances for minimum cost obtained using DFM analysis.

Keywords

Geometric Dimensioning & Tolerancing (GD&T), Tolerance Allocation, Tolerance Analysis (TA), Worst-Case TA, Statistical TA, Design for Manufacture (DFM).

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M. Srilatha ¹, B. Venkateswara Rao ², B. Vijaya Saradhi ²

Affiliations
1 Department of Engineering Chemistry, College of Engineering, Andhra University, Visakhapatnam-530 003, IN
2 Department of Civil Engineering, College of Engineering, Andhra University, Visakhapatnam-530 003, IN

Abstract

Ultrasonic velocity, viscosity and density of ethyl oleate in butanol have been determined at various temperatures in the range 303.15-318.15 K. These data are used to estimate adiabatic compressibility, intermolecular free length and acoustic impedance, molar volume and free volume along with their excess values. The observed variations in these parameters with different concentrations and temperatures are discussed in terms of the intermolecular interactions between the unlike molecules of the binary mixtures.

Keywords

Butanol, Ethyl Oleate, Density, Ultrasonic Speed, Viscosity.

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B. Venkateswara Rao ¹, P. Vijetha ¹, S. Vidyadhara ¹, K. Kavitha ¹

Affiliations
1 Department of Pharmaceutical Analysis, Chebrolu Hanumaiah Institute of Pharmaceutical Sciences, Chowdavaram, Guntur, Andhra Pradesh, IN

Abstract

A simple, precise, accurate, reproducible and economical stability- indicating reverse phase liquid chromatography method was developed and validated for the quantitative simultaneous estimation of Pioglitazone and Glimepiride in marketed formulations. Estimation of drugs in this combination was done with a C₁₈ column (Kromasil 100-5 column, 250mm x 4.6mm) using mobile phase of composition phosphate buffer pH 7: Acetonitrile in ratio 60:40 v/v. The flow rate was 0.8 ml/min and the effluents were monitored at 230 nm. The retention time of Pioglitazone and Glimepiride were 6.71 min and 8.38 min respectively. The method was found to be linear over a range of 10-50 μg/ml for Pioglitazone and 3-15 μg/ml for Glimepiride. The established method proved as reproducible one with a % RSD value of less than 2 and having the robustness and accuracy within the specified limits. Assay of marketed formulation was determined and find with 96% and 98% for Pioglitazone and Glimepiride respectively. The method was validated according to the guidelines of International Council for Harmonization (ICH) and was successfully employed in the estimation of commercial formulations. This liquid chromatographic method can be applied for the qualitative and quantitative determination of selected drugs by the modern chemist.

Keywords

Pioglitazone, Glimepiride, RP-HPLC and Method validation.

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D. Kishore Babu ¹, P. V. Narasimha Rao ¹, Y. Mohana Roopa ¹, B. Venkateswara Rao ¹

Affiliations
1 Department of Computer Science and Engineering, Institute of Aeronautical Engineering, Dundigal − 500043, Hyderabad, Telangana, IN

Abstract

Objectives: In computing, facts/data deduplication is a particular statistics firmness method for removing reproduction copy of repeating records. Intelligent compression or single-instance storage technique make sure that merely single sole request of information is retained on storage space media, such as disk, flash or tape. Unneeded data blocks are replaced with a pointer to the sole data copy. Methods: This study introduces focus on comparing the clouds via authorization steps, which incorporates file token technology and proportion token generation, in competition. To the convergent encryption and document add steps. We compare the overhead through using quite a lot of distinctive reasons. Findings: In cloud computing reproduction copies of repeat facts within the cloud referred to as Data Deduplication, and broadly used in cloud garage to decrease the amount of garage space and stay bandwidth. Data deduplication removes reproduction copies of equal documents can be existed in Cloud, if so best one reproduction is maintained and replacing the alternative copies with the original reproduction. To defend the privateness of sensitive Information on similar instance as maintaining deduplication, security algorithm is proposed for statistics safety. Application: We enforce a prototype of our proposed legal replica test scheme and behavior tested experiments the usage of our prototype. It shows planned legal duplicate test scheme incurs minimum overhead in comparison to ordinary operations.

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