R. Senthilkumar

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The biodiesel plant, Jatropha curcas L. was micropropagated using nodal explants on MS supplemented with BAP (1.5 mg/l), Kn (0.5 mg/l) and IAA (0.1 mg/l). Somatic embryos were induced directly from green cotyledon explants on MS fortified with 2 mg/l of BAP. The results of histological studies showed that several layers of meristematic cells participated in(More)
The Andaman and Nicobar (A&N) group of islands is immensely rich in plant biodiversity. Andaman’s native tribes are hunter-gatherers, sustaining on wild or marine food and practically do not have any cultivation. Diversity in cultivated crops is presently maintained in home gardens by settlers from the mainland and other adjoining countries. The National(More)
As a measure of testing the medicinal properties of Jatropha curcas, methanol extract obtained from both in vivo leaf and leaf derived callus were subjected to antimicrobial activity against six microorganisms, of the six different concentrations tested, the in vitro leaf callus extracts of at high concentrations (1.0 and 1.2%) inhibited the growth of(More)
UNLABELLED An Internet computing server has been developed to identify all the occurrences of the internal sequence repeats in a protein and DNA sequences. Further, an option is provided for the users to check the occurrence(s) of the resultant sequence repeats in the other sequence and structure (Protein Data Bank) databases. The databases deployed in the(More)
The facility layout design has been regarded as the key to improve plant productivity, which are relevant to both manufacturing problems; various optimization approaches for small problems and heuristic approaches for the larger problems have been proposed to elucidate the problem. Unequal area facility layout problems comprise a class of extremely(More)
Most simple nonlinear thresholding rules for waveletbased denoising assume that the wavelet coefficients are independent. However, wavelet coefficients of natural images have significant dependencies. This paper attempts to give a recipe for selecting one of the popular image-denoising algorithms based on VisuShrink, SureShrink, OracleShrink, BayesShrink(More)
The objective of Digital Image processing(DIP) refers to manipulate and enhance the image quality. There are plenty of image processing applications and problems are there, namely image representation enhancement, restoration and compression etc., In this paper, only three types of histogram modification methods (i.e. HE, AHE, & CLAHE) are discussed and(More)
This paper describes in detail about 2D and 3D face and video face databases developed in the year from 1992 to 2009. The still face database discussed here includes: Our Laboratory Database of Faces (ORL), Yale face database, Yale face databaseB(B stands for Big), Yale face database extendedB, FERET(Face Recognition Technology) face database and CASPEAL is(More)
Cloud is becoming a dominant computing platform. Naturally, a question that arises is whether we can beat notorious DDoS attacks in a cloud environment. Researchers have demonstrated that the essential issue of DDoS attack and defence is resource competition between defenders and attackers. A cloud usually possesses profound resources, and has full control(More)
This paper compares the performance improvement in recognition rate of different face recognition methods. The face recognition methods such as 1dPCA, 2dPCA, KPCA, ICA and FDA usually use Euclidean distance and in some cases they use the cosine similarity function. Instead of traditional classification and distance measurement methods, SVM classifier is(More)