Mepco Schlenk Engineering College

About: Mepco Schlenk Engineering College is a based out in . It is known for research contribution in the topics: Wavelet & Wavelet transform. The organization has 1307 authors who have published 1665 publications receiving 18690 citations.

Notice of Violation of IEEE Publication Principles ECG Signal Interferences Removal Using Wavelet Based CSTD Technique

Abstract: Wavelet-based signal processing has become commonplace in the signal processing community over the past decade. One of the most important applications of wavelets is removal of noise from signals called denoising accomplished by thresholding wavelet coefficients in order to separate signal from noise. However, conventional denoising fails for signals with low signal-to-noise ratio (SNR). Synchronous linear averaging of a large number of acquired data frames is universally used to increase the SNR of weak biosignals. A novel wavelet-based estimator is presented for fast estimation of such weak ECG signals. This estimation algorithm provides a faster rate of convergence to the underlying signal than linear averaging by means of Cyclic Shift Tree Denoising (CSTD). This process is faster than other method and gives effective performance in SNR. In this paper CSTD technique is used for reducing Additive white Gaussian noise (or) random noise, EMG noise and Power line Interference. CSTD implies to recombine a set of N original data frames to create a large number of new frames each of which is denoised using a variable threshold function. This algorithm uses the original (N) frames of data and produces (N*log 2 N) new frames. The new frame is derived by averaging pairs of adjacent original frames, followed by denoising each averaged frame. By this method improvement in SNR is 30.5 db. In preprocessing, the base line wander is removed using wavelet approximation of the ECG signal.

Evaluation of Mechanical Properties of Synthetic Fiber Reinforced Polymer Composites by Mixture Design Analysis

Abstract: The objective of this work is to investigate the mechanical properties of Glass fiber reinforced Epoxy composites with different weight proportions. Using hand lay-up technique followed by compress...

γ-Irradiation effect on the acoustical properties of zinc lead borate glasses

Abstract: The effect of γ-irradiation on the acoustical properties of xZnO·2xPbO·(1–3x)B2O3 glasses has been studied. Ultrasonic velocity and attenuation measurements have been made before and after γ-irradiation at room temperature in the frequency range 2.25–10 MHz. From the measured density and ultrasonic velocity data, the elastic moduli, Poisson's ratio and other parameters have been obtained. Changes in the acoustical properties are explained in terms of radiation-induced structural defects and the influence of PbO/ZnO in the glass network structure. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Transformation of aqueous methyl orange to green metabolites using bacterial strains isolated from textile industry effluent

Abstract: The present report is based on the degradation of methyl orange, which is categorized as an acute toxic compound and mutagenic substance. Since it is highly solubilized in the environment, it is very challenging to remove. This study is focussed on biological treatment which has the ability to breakdown methyl orange. Three bacterial strains were initially isolated from the textile wastewater. Out of those strains, Aeromonas hydrophila showed maximum degradation of about 85%. The optimized conditions for the degradation process were found to be 20 ppm concentration, pH 7, and temperature 35 °C. The carbon source such as 1% sucrose is found to be appropriate carbon source for the degradation. While nitrogen source suited well was found to be 1% peptone over 1% meat extract. The metabolite obtained after degradation was analyzed using FT-IR and GC-MS. N, N-dimethyl p-phenylenediamine and 4-amino sulfonic acid were identified as the end products.