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Articles by V. Vijayalakshmi
Total Records ( 3 ) for V. Vijayalakshmi
  R. Kondamudi , V. Vijayalakshmi and K. Sri Rama Murthy
  This study was undertaken to evaluate the most suitable concentration of plant growth regulators and perfect explant (node, internode and thin cell layer explants-TCLs) for callus induction and subsequent organogenesis in an endangered medicinal Ceropegia pusilla. The best callus induction was found on the MS medium supplemented with 6-benzylaminopurine (BAP) 13.32 μM L-1 + 2, 4-dichlorophenoxy acetic acid (2,4-D) 0.45 μM L-1 from TCLs. After the initiation of the callus, it was immediately transferred to MS medium supplemented with BAP along with other auxins like 2, 4-D, Indol-3-Acetic Acid (IAA), Indole-3-Butyric Acid (IBA), Naphthalene Acetic Acid (NAA). The regenerative calli were raised on the MS medium supplemented with 1.13 μM L-1 of 2,4-D. Whereas, the organogenic calli was raised on the medium containing 22.7, 40.86, 45.4 μM L-1 of Thidiazuron (TDZ) induced 37.54±0.29, 37.12±0.18 and 34.32±0.17 shoots, respectively. On the media containing BAP 13.32 + IBA 0.49 to 1.23 μM L-1 micro shoots rooted best and 75% of the shoots were survived. The plantlets were established, acclimatized and thrived in green house conditions with 80%. The regeneration protocol developed in this study provides a basis for germplasm conservation and for further investigation of bio active constituents of this medicinal plant.
  V. Vijayalakshmi and T.G. Palanivelu
  The secure end-to-end route discovery in the decentralized Mobile Adhoc Networks (MANETs) should have to meet the requirements of prevention of DoS attacks on data traffic, should be adaptive and fault tolerant and must have high speed, low energy overhead and scalability for future development. In this research a secure routing using antnet mechanism and mutual authentication using Elliptic Curve Cryptography (ECC) has been proposed to meet the above requirements. The common perception of public key cryptography is that it is not well suited for adhoc networks as they are very complex and slow. Against this popular belief, this research implements Elliptic Curve Cryptography -a public key cryptography scheme. ECC provides a similar level of security to conventional integer-based public-key algorithms, but with much shorter keys. Because of the shorter keys ECC algorithms run faster, require less space and consume less energy. These advantages make ECC a better choice of public key cryptography, especially for a resource constrained systems like MANETs. Using the antnet routing algorithm, the highly trustable route will be selected for data transfer and each Mobile Node (MN) in MANET maintains the trust value of its one-hop neighbors. The mutual authentication between source and destination is done by master key exchange using Elliptic Curve Cryptography (ECC).
  G. Mahadevan and V. Vijayalakshmi
  The medium domination number of a Jahangir graph Jm,n was introduced by M. Ramachandran and N. Parvathi. Recently Mahadevan et al., introduced the concept of extended medium domination number of a graph. edom (u, v) is the sum of number of u-v paths of length less than or equal to 3. ETDV (G) = Σedom (u, v) for u, vεV(G) is the total number of vertices that dominate every pair of vertices. The extended medium domination number of G is EMD(G) = ETDV(G)/(p2) where, p is the number of vertices in G. Here, we generalize the extended medium domination number of Jahangir graph, sunflower graph and windmill graph.
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