S. Ashok

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Reactive oxygen metabolites (ROMs), including superoxide anion (O2*-), hydrogen peroxide (H2O2) and hydroxyl radical (*OH), play an important role in carcinogenesis. There are some primary antioxidants such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase (CAT) which protect against cellular and molecular damage caused by the ROMs.(More)
—Delays and packet losses are undesirable from a control system perspective as they tend to adversely affect performance. Networked Control Systems (NCSs) are a class of control systems wherein control components exchange information using a shared communication channel. Delays and packet losses in the communication channels are usually random, thereby(More)
Idiopathic internal jugular phlebectasia, occurs either unilaterally or bilaterally affecting the internal jugular vein is a rare congenital variation often diagnosed during childhood. It usually presents with a benign swelling over the lateral side of neck on the affected side, seen on exertion. A-30-year old male was operated for anterior cervical(More)
We present a case of a 14-year-old boy, who presented with pain in the left thigh region for 1 year. The pain exacerbated at night, waking up the child and was relieved by salicylates. On the basis of clinical history, conventional radiography, computerized tomography and bone scintigraphy, a diagnosis of osteoid osteoma was made. The tumor was completely(More)
This paper presents the design and the implementation of Elliptic Curve Cryptography in an Asterisk VoIP server which serves as an exchange for placing voice calls over the internet. Voice over internet protocol refers to the transmission of speech encoded into data packets transmitted across networks. VoIP networks are prone to confidentiality threats due(More)
BACKGROUND Playing guitar can cause adoption of asymmetric postures and affect the shoulder's stability. OBJECTIVE To assess the presence of scapular dysfunction in professional guitar players. METHOD A lateral scapular slide test was performed at the level of the spine of the scapula and at the inferior angle of the scapula in 20 professional guitar(More)
—Wireless network communications has been facilitating a way to exchange data between the participating nodes. Due to the open nature of wireless networks, it makes adversaries to launch different types of attacks. Hence wireless network communication remains a challenging and critical issue. Wireless networks are being used in many commercial and military(More)
VoIP networks are prone to confidentiality threats due to weak keys used by the AES algorithm for encryption of VoIP packets. So, in order to strengthen the key for encryption and decryption, Elliptic Curve Diffie-Hellman (ECDH) Algorithm key agreement scheme is employed with smaller key sizes resulting in faster computations. This Paper presents the Design(More)
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