Gaurav Chawla

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BACKGROUND In patients breathing spontaneously during anaesthesia, expiratory muscle activity can be a prominent feature. This activity is triggered or exaggerated by opioid administration, which causes a prompt increase in intra-abdominal pressure. The effect of this increased expiratory activity on end-expiratory lung volume is not described. METHODS(More)
BACKGROUND AND AIMS There is paucity of Indian data regarding serum HBsAg levels (qHBsAg) in treatment-naïve chronic hepatitis B (CHB). This study was done to determine correlation of qHBsAg with hepatitis B e antigen (HBeAg) and hepatitis B virus (HBV) DNA levels and its ability to independently categorize subgroups of CHB. METHODS We studied 131(More)
In this paper, a new Image Steganography method based on the spatial domain is proposed. It uses the 7 bit of pixel value of cover image. The main idea is to make the 7 bit of pixel value equal to the message bit by adding or subtracting 1 to the pixel value. Our method is imperceptible to Human Visual System (HVS) because it provides minimum degradation in(More)
  • Yatish Y. Jani, Yagnesh J. Parmar, +17 authors Hengfu Yang
  • 2014
Globalization and internet are the two main reasons for rapidly spreading of the multimedia information and due to that ownership and copyright of multimedia files are not usually protected by the providers. Digital watermarking is one of the best ways for copyright protection. Researchers are trying to invent new techniques that increase the security,(More)