Fundamentals and Literature Review of Discrete Fourier Transform in Digital Signal Processing

Today’s world is digital world. While designing and analyzing the digital phenomena the most desired factor are high performance, time and cost(economy).DFT and FFT are the most efficient mathematical technique to meet these challenges .To compute DFT using FFT is genius method ,in this method FFT decomposes DFT with N sample points, into N DFT each with single point. This paper focus on DFT, FFT and its approach to Digital signal processing

Mathematical Operations on Basic Discrete Time Signals with MATLAB Programming

This paper deals with the simulation of some of the discrete time signals using MATLAB and discusses some of their mathematical operations and properties. Basic discrete time signals with MATLAB simulation is discussed in introduction along with the time domainand frequency domain analysis of discrete time signals.The frequency domain analysis is discussed with help of two important transform technique i.e. Z-transform and Discrete Fourier transform. It is thus important to learn first how to generate signals in time domain and perform basic operations on them, which are the main objectives of this paper. A secondary objective is to learn the application of some basic MATLAB commands and its usagein solving simple digital signal processing (DSP) problems

3D Numerical Modelling of Turbulent Flow in a Channel Partially Filled with Different Blockage Ratios of Metal Foam

The aim of the present research work is to understand the intricacies of fluid flow through a rectangular channel that has been partially filled with a metal foam block of different blockage ratio (0.16-1), with a pore density (5–30 Pores Per Inch i.e. PPI), along with varying inlet velocity (6.5–12.5 m/s). For the porous region, numerical solutions are acquired using the Darcy Extended Forchheimer model. The Navier-Stokes equation is used in the non-porous zone. Different flow behaviours were seen as a function of PPI, height, and inlet velocity. The pressure drop increases with inlet velocity, PPI, and block height, with a maximum value of approximately 4.5 kPa for the case of 30 PPI, 12.5 m/s, and a blockage ratio of 1. Results show that the existence and location of the formation of eddies depends on the inlet velocity, PPI, and blockage ratio. Such studies have been reported less and will aid research on forced convection through a channel partially filled with metal foam and optimisation studies between increased heat transmission and the additional pressure drop for the same by providing a detailed fluid flow analysis

Effect of fertility levels on growth, yield and soil fertility status of maize (Zea mays L.) in vertisol of Maharashtra

A field experiment was conducted at the experimental farm, AICRP on Integrated Farming Systems, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani during 2014-15 to assess the nitrogen, phosphorus and zinc requirement for maize crop. The experiment was laid out in a split plot design using eight treatments with three replications. The main plot consists of three levels of Nitrogen i.e., 100 kg ha-1(N1), 125 kg ha-1(N2),150 kg ha-1(N3) with two Zinc levels viz.,25 kg ha-1(Z1), 35 kg ha-1(Z2) and sub plot comprised of three levels of 50 kg ha-1(P1), 75 kg ha-1(P2)and 100 kg ha-1(P3). Application of 150 kg N ha-1, 100 kg P ha-1 and 35 kg Zn ha-1 recorded significantly higher growth at 5% level of significance attributes viz., plant height (218.64), no. of functional leaves (11.30), leaf area plant-1 (65.07 cm2), total dry matter plant-1 (269.08) and grain yield (6705.8 kg ha-1), husk yield (1378.2 ha-1), spindle yield (1642.6 ha-1), stover yield (7161.0 ha-1) and biological yield (13866.8 ha-1). The nutrient status after harvest of maize was highest in the treatment combination of N3P3Z2 receiving 150 kg N ha-1, 75 kg P ha-1 and 35 kg ZnSO4 ha-1. But the result were at par with the treatment combination N2P2Z1 which received 125 kg N ha-1, 75 kg P ha-1 and 25 kg ZnSO4 ha-1. From the results, it was concluded that the maximum growth, yield, & post harvest nutrient status could be achieved by judicious application of chemical fertilizers (N, P & Zn)

Prolactin level in umbilical cord blood of newborn and its relation to respiratory distress syndrome

Background: Production of lower concentrations of prolactin in fetus is considered as one of the major contributor for the development of respiratory distress syndrome (RDS) in newborns considerably in pregnants with maternal complications. Hence the present study was conducted with the objective to measure the serum level of cord blood prolactin in normal pregnancy and in pregnancy with maternal complications and its association with development of RDS in newborn.Methods: In this prospective study of 100 women, 28 with normal pregnancy (Group A) and 72 with abnormal pregnancies (Group B) were included in the study. Umbilical cord blood was collected and serum prolactin level was estimated using radio-immuno assay. The obtained values were correlated with prevalence of RDS in neonates and maternal complications.Results: The average age of pregnant women participated in Group A was 26 years and Group B was 27 years. In Group A 2 babies with birth weight of 2001-3000 gm had a cord serum prolactin level of 216±137.8 ng/mL developed RDS. In Group B the level of prolactin was 285±276 and 326±132 ng/mL in 4 RDS babies with birth weight of <1000 gm and 1000-2000 gm respectively. It was observed that cord serum prolactin levels had no correlation with the mode of delivery, sex of newborn, steroid therapy. In Group A, 2 neonates developed RDS which were of gestational age between 32-35 weeks with mean prolactin level of 216 ng/ml, while in Group B, 1 neonate with gestational age less than 32 weeks and mean prolactin level of 480 and 4 neonates of 32-35 weeks with mean prolactin level of 266 ng/mL developed RDS. Out of 27 mothers with complications of PIH, 3 developed RDS. 1 case each from IUGR and twins developed RDS respectively.Conclusions: The risk of RDS is less in newborn with high prolactin level than in newborns with low prolactin levels. So prolactin might have a role in fetal lung maturation

Monitoring System for Traffic Analysis Using Twitter Stream

Social networks are often utilized as a supply of data for event detection like road holdup and automobile accidents. Existing system present a period of time observance system for traffic event detection from twitter. The system fetches tweets from twitter and then; processes tweets victimisation text mining techniques. Last performs the classification of tweets. The aim of the system is to assign the suitable category label to every tweet, whether or not it's associated with a traffic event or not. System utilized the support vector machine as a classification model. The projected system uses the system supported semi-supervised approach, which provides coaching victimisation traffic connected dataset. we have a tendency to propose a bunch approach for classification of the tweets in traffic connected and non- traffic connected tweets. We use a geometer distance to calculate the similarity between the tweets

Novel and promising compounds to treat Cryptosporidium parvum infections

No fully effective approved drug therapy exists for Cryptosporidium infections of immunocompetent and immunocompromised patients. Here, we investigated 11 benzimidazole derivatives carrying substituted thioalkyl and thiobenzyl groups at position 2 of benzimidazole nucleus and additional substituents at the benzene part of benzimidazole for inhibition of the in vitro growth of the intestinal protozoan parasite, Cryptosporidium parvum. Three of them, i.e., 5-carboxy-2-(4-nitrobenzylthio)-1H-benzimidazole, 5,6-dichloro-2-(4-nitrobenzylthio)-1H-benzimidazole, and 4,6-dichloro-2-(4-nitrobenzylthio)-1H-benzimidazole, (compounds 5, 7, and 8) were the most active (IC50 28–31 μM). The concentration of compounds 5, 7, and 8 that caused 50% growth inhibition in human enterocytic HCT-8 cells by a quantitative alkaline phosphatase immunoassay was comparable with those obtained for paromomycin

Novel and promising compounds to treat Cryptosporidium parvum infections

No fully effective approved drug therapy exists for Cryptosporidium infections of immunocompetent and immunocompromised patients. Here, we investigated 11 benzimidazole derivatives carrying substituted thioalkyl and thiobenzyl groups at position 2 of benzimidazole nucleus and additional substituents at the benzene part of benzimidazole for inhibition of the in vitro growth of the intestinal protozoan parasite, Cryptosporidium parvum. Three of them, i.e., 5-carboxy-2-(4-nitrobenzylthio)-1H-benzimidazole, 5,6-dichloro-2-(4-nitrobenzylthio)-1H-benzimidazole, and 4,6-dichloro-2-(4-nitrobenzylthio)-1H-benzimidazole, (compounds 5, 7, and 8) were the most active (IC50 28–31 μM). The concentration of compounds 5, 7, and 8 that caused 50% growth inhibition in human enterocytic HCT-8 cells by a quantitative alkaline phosphatase immunoassay was comparable with those obtained for paromomycin

TESTING OF PRESSURE REGULATOR IN THE JANATA BIOGAS PLANT DISTRIBUTION SYSTEM

Fixed dome type Janata biogas plants develop biogas at a variable pressure from a few cm to over 100 cm of water column (WC) pressure. The biogas burners need the gas at a fairly constant pressure of 7.62 cm of water column as prescribed by ISI. A few biogas valves/regulators are available which claim to regulate the biogas pressure to a value around 7.62 cm. The present study was undertaken to evaluate the performance t; of a commercially available biogas regulator. It was tested to study the effect of different digester pressures and regulator settings on the gas flow rate and outlet pressure. It was observed that outlet pressure of regulator decreased with increase in the gas flow rate for constant digester pressure. It gave different outlet pressures for different settings. However, the middle setting gave a pressure of nearly 7.62 cm necessary for efficient operation of burners. It did not control the outlet pressure to a desired value for different digester pressures as claimed by the manufacturer. The outlet pressure of regulator was affected by its setting, flow rate and digester pressure. Therefore, the regulator can be considered as a semi-automatic type of biogas regulator