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Search Results: 1 - 10 of 196 matches for " Ramalingam Rajamanickam "
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Effect of Maillard Reaction Products (MRP) on Chlorophyll Stability in Green Peas  [PDF]
Ranganathan Kumar, Ramalingam Rajamanickam, Shanmugam Nadanasabapathi
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49115

Maillard Reaction Products (MRP) was prepared from glucose and glysine heated at 90°C in air circulating oven for 12 hours. The effect of MRP on chlorophyll stability in green peas was investigated. The addition of Maillard Reaction Products (MRP) decreased the loss of chlorophyll a, chlorophyll b and total chlorophyll. The conversion of pheophytin and pyropheophytin were also reduced by the addition of MRP.

Institutional Foods Development Perspectives Review  [PDF]
Ranganathan Kumar, Tamilselvan Kathiravan, Ramalingam Rajamanickam, Shanmugam Nadanasabapathi
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49114

Development of food service institution has been initiated by industrialization and has grown rapidly over the last half century. Institutional Food Service includes planning, preparation, distribution and supply of foods outside home. Consumer perceptions towards institutional foods are influenced by marketing, advertising and lifestyle changes. Food service systems/catering units promote new processing methods and bulk packaging of food to conquer problems like skilled labour shortage and reduce the operation cost. This review emphasize on the evolution of food services (vending, industrial food services, school lunch, hospital etc.) and its importance. It also highlights the attributes for making institutional foods more acceptable for consumers and their role of human engineering.

Oscillatory and Asymptotic Behavior of Solutions of Second Order Neutral Delay Difference Equations with “Maxima”  [PDF]
Ramalingam Arul, Manvel Angayarkanni
Advances in Pure Mathematics (APM) , 2015, DOI: 10.4236/apm.2015.52009

In this paper, we study the oscillatory and asymptotic behavior of second order neutral delay difference equation with “maxima” of the form?\"\"

Examples are given to illustrate the main result.

Recognizing Expression Variant and Occluded Face Images Based on Nested HMM and Fuzzy Rule Based Approach  [PDF]
Parvathi Ramalingam, Shanthi Dhanushkodi
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.76083
Abstract: The face recognition with expression and occlusion variation becomes the greatest challenge in biometric applications to recognize people. The proposed work concentrates on recognizing occlusion and seven kinds of expression variations such as neutral, surprise, happy, sad, fear, disgust and angry. During enrollment process, principle component analysis (PCA) detects facial regions on the input image. The detected facial region is converted into fuzzy domain data to make decision during recognition process. The Haar wavelet transform extracts features from the detected facial regions. The Nested Hidden markov model is employed to train these features and each feature of face image is considered as states in a Markov chain to perform learning among the features. The maximum likelihood for the input image was estimated by using Baum Welch algorithm and these features were kept on database. During recognition process, the expression and occlusion varied face image is taken as the test image and maximum likelihood for test image is found by following same procedure done in enrollment process. The matching score between maximum likelihood of input image and test image is computed and it is utilized by fuzzy rule based method to decide whether the test image belongs to authorized or unauthorized. The proposed work was tested among several expression varied and occluded face images of JAFFE and AR datasets respectively.
Comparative Analysis of Analog and Digital Controllers for Negative Output Superlift Luo Converter (NOSLC)  [PDF]
Chamundeeswari Vinayagam, Seyezhai Ramalingam
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78146
Abstract: This paper focuses on the comparative study of analog and digital control techniques for Negative Output Superlift Luo converter (NOSLC). NOSLC is a high gain converter in which the positive source voltage is converted into a negative load voltage. Though the negative load voltage is produced effectively, there is lot of non-linearities that affects the voltage level. To overcome this, analog controllers like Proportional-integral (PI), fuzzy PI and a sliding mode controller (SMC) were proposed for NOSLC. However PI controller does not respond to changes in operating point, fuzzy PI is based on the systematic approach and proved to be a trial and error oriented method and SMC brings an oscillation in the duty cycle. Therefore, to overcome these drawbacks, a digital control technique using PIC microcontroller is proposed in this paper which provides high versatility and programmability approach. Simulation studies are carried out in MATLAB and the performances of these controllers have been investigated for the proposed DC-DC converter. A prototype of the NOSLC converter is built by employing digital control and the results are verified experimentally.
Theory on the Dynamics of Feedforward Loops in the Transcription Factor Networks
Rajamanickam Murugan
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041027
Abstract: Feedforward loops (FFLs) consist of three genes which code for three different transcription factors A, B and C where B regulates C and A regulates both B and C. We develop a detailed model to describe the dynamical behavior of various types of coherent and incoherent FFLs in the transcription factor networks. We consider the deterministic and stochastic dynamics of both promoter-states and synthesis and degradation of mRNAs of various genes associated with FFL motifs. Detailed analysis shows that the response times of FFLs strongly dependent on the ratios (wh = γpc/γph where h = a, b, c corresponding to genes A, B and C) between the lifetimes of mRNAs (1/γmh) of genes A, B and C and the protein of C (1/γpc). Under strong binding conditions we can categorize all the possible types of FFLs into groups I, II and III based on the dependence of the response times of FFLs on wh. Group I that includes C1 and I1 type FFLs seem to be less sensitive to the changes in wh. The coherent C1 type seems to be more robust against changes in other system parameters. We argue that this could be one of the reasons for the abundant nature of C1 type coherent FFLs.
Emerging role of radiation induced bystander effects: Cell communications and carcinogenesis
Rajamanickam Baskar
Genome Integrity , 2010, DOI: 10.1186/2041-9414-1-13
Abstract: Extensive epidemiological and toxicological research over several decades has focused on the health effects of radiation to understand the risk of exposure to both public and workforce. Ionizing radiation has been used in both diagnostic and therapeutic medical applications and described as a double-edged sword [1]. However, there are considerable concerns about the detrimental health effects associated with direct radiation exposure [1-3] even on metabolically inactive cells [4,5]. Radiation is harmful in terms of risks to health from accidental exposure and its role as a carcinogen [6], however on the other side it is beneficial for the use of various diagnostic and therapeutic procedures such as the treatment of cancer. Radiotherapy (RT) continues to be an important therapeutic modality for the treatment of cancer. RT for cancers allows killing of the cancer cells but also shows a risk for adverse consequences such as tissue atrophy and formation of secondary tumors at the same organ, or at some distanced part of body [7]. Furthermore, radiation exposure during diagnostic (e.g. X-rays, CT-scans) and RT procedures shows varying health effects in the general population and also in cancer patients [8-14]. But with cancer survivors living longer, there is a growing concern regarding the risk of radiation-induced secondary cancers in patients treated with ionizing radiation. The situation is important for children, who are inherently more radiosensitive and therefore at greater risk for radiation induced post-radiotherapy cancer development [15-17].The DNA damage response system, which maintains the survival and genomic stability of the cell, represents a vital line of defense against various exogenous and endogenous DNA damaging agents [18]. Radiation can induce apoptosis or trigger DNA repair mechanisms. In general minor DNA damage is thought to halt cell cycle to allow effective repair, while more severe damage can induce an apoptotic cell death program. Until rela
Detoxifying effect of Nelumbo nucifera and Aegle marmelos on hematological parameters of Common Carp (Cyprinus carpio L.)
Rajamanickam Vinodhini
Interdisciplinary Toxicology , 2010, DOI: 10.2478/v10102-010-0052-9
Abstract: The objective of this study was to investigate the efficacy of Nelumbo nucifera and Aegle marmelos on common carp exposed to sub-lethal concentrations of combined heavy metals (5 ppm) under laboratory conditions. The fish were treated with Nelumbo nucifera (500 mg/kg bwt) and Aegle marmelos (500 mg/kgbwt) for 30 days as a dietary supplement. The blood biochemical parameters of the fish were evaluated by analyzing the level of red blood cells (RBC), packed cell volume (PCV), hemoglobin concentration, glucose, cholesterol, iron and copper. The findings of the present investigation showed significant increase in hemoglobin (p<0.001), RBC (p<0.01) and PCV (p<0.01) of herbal drug-treated groups compared with metal-exposed fish. Conversely, glucose and cholesterol level in blood of common carp showed significant reduction compared with heavy-metal-exposed groups. All the values measured in Nelumbo nucifera and Aegle marmelos treated fish were restored comparably to control fish. Our results confirmed that Nelumbo nucifera and Aegle marmelos provide a detoxification mechanism for heavy metals in common carp.
Effect of heavy metals induced toxicity on metabolic biomarkers in common carp (Cyprinus Carpio L.)
Vinodhini Rajamanickam
Maejo International Journal of Science and Technology , 2008,
Abstract: This research paper presents the pathological effects of a sub-lethal concentration of heavy metals (cadmium, lead, nickel, and chromium) on common carp (Cyprinus carpio L.). Total protein and levels of alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) in the liver tissue were measured. Compared with the control group a significant decrease of total protein (p < 0.001) was ascertained in the experimental group. The ALP on the other hand was significantly higher (p < 0.001). The values of ALT, AST, and LDH significantly decreased in the first day and then progressively increased afterwards (p < 0.001). The above results on the biochemical profile indicate marked hepatotoxic effects of heavy metals in common carp.
Effect of heavy metals on the level of vitamin E, total lipid and glycogen reserves in the liver of common carp (Cyprinus carpio L.)
Vinodhini Rajamanickam
Maejo International Journal of Science and Technology , 2008,
Abstract: The aim of this study is to examine some changes in the biochemical profile of the liver tissue of common carp (Cyprinus carpio L.) exposed to a sublethal concentration of heavy metal mixture (cadmium, chromium, nickel and lead). The biochemical profile, specifically glycogen, total lipid and vitamin E content in the liver tissue was examined and compared to that of the control group. The exposed group showed a marked decline in glycogen and vitamin E reserves. Conversely an increase in total lipid in comparison to control was observed. The result reflects the sensitivity of these biochemical parameters to the effects of sublethal levels of combined heavy metals for this the widely consumed freshwater fish.
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