Informatics Publishing Limited

Gopu Chandran Lenin Perumal ¹, R. Mythili ², Senthil Kumar ², Subashini Suyambukesan ³

Affiliations
1 Department of Periodontology, Penang International Dental College, Penang, MY
2 Rajah Muthiah Dental College & Hospital, Annamalai University, Chidambaram, Tamilnadu, IN
3 Department of Oral medicine & Radiology, Penang International Dental College, Penang, MY

Abstract

The purpose of this study was to estimate and compare the levels of tissue non-specific alkaline phosphatase isoenzyme in serum of healthy individual and in chronic periodontitis patients with varying severity. Serum samples were obtained from 31individuals. 10 from healthy individuals and 21 from chronic periodontitis patients categorized as mild, moderate and severe based on CAL values. The samples were used to determine the Tissue Non - Specific Alkaline Phosphatase Isoenzyme (TNSALP) level. Evaluation and comparison of the tissue non - specific alkaline phosphatase isoenzyme activity between the control and chronic periodontitis patient group showed a decrease in bone type of tissue non - specific alkaline phosphatase level among mild, moderate and severe chronic periodontitis patients group. The steady decrease in Bone type of TNSALP might help to provide useful information if monitored successively over a period of time.

Keywords

Alkaline Phosphatase Isoenzyme, Chronic Periodontitis, Severity of Chronic Periodontitis, Serum Enzymatic Assay, Tissue Non-specific Alkaline Phosphatase Isoenzyme, TNSALP.

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R. Mythili , M. Gomathy , B. Yazhini , D. Madhumitha

Abstract

The main objective is to analyze a new highly efficient topology for power factor correction. By eliminating the input bridge diodes, the efficiency is improved. Due to the increasing demand of these devices, the line current harmonics pose a major problem by degrading the power factor of the system thus affecting the performance of the devices. Hence there is a need to reduce the line current harmonics so as to improve the power factor of the system. This has led to designing of Power Factor Correction circuits. In our project work we have designed an active power factor circuit using Buck Converter for improving the power factor. The proposed converter is analyzed and the theoretical and simulation results of the converter are presented.

Keywords

Power Factor Correction (PFC), Buckconverter, Bridgeless Rectification.

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