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Phadikar A.,MCKV Institute of Engineering | Maity S.P.,Bengal Engineering and Science University | Verma B.,Technocrats Institute of Technology
Computers and Electrical Engineering | Year: 2011

This paper proposes a region based digital watermarking scheme to serve the purpose of copyright protection and integrity verification of image database using discrete cosine transform (DCT). The objective is achieved by embedding watermark into visually significant regions of the image(s) using quantization index modulation (QIM). The main contributions of this work are, (1) the use of quad tree decomposition for image segmentation to find visually significant regions, and (2) the use of image database as a single entity for watermarking, instead of watermarking on individual image, so that integrity of the database is checked. Simulation results validate the above claims. Simulation results also show that the proposed scheme is robust and secured against a wide range of attacks available in StirMark 4.0 package. © 2011 Elsevier Ltd. All rights reserved.

Bhalla A.,Technocrats Institute of Technology
Proceedings of the 2nd Asia Symposium on Quality Electronic Design, ASQED 2010 | Year: 2010

For VLSI design which have large collection of objects to be constrained, clear sequence ofexecution ofconstraints is important using constraint- satisfaction method for proper execution to avoid constraint loop at algorithmic level. The objective of this paper is relaxation based constraint sequence solving technique applied to the backtrack step of backtrack search solver, with the goal of increasing the ability ofthe solver to search different parts of the search space. The experimental results are promising, and motivate the integration of relaxation based constraint sequence solving in state-of-the-art solvers. © 2010 IEEE.

Boddupalli B.M.,Osmania University | Ramani R.,Osmania University | Subramaniam B.,Technocrats Institute of Technology | Anisetti R.N.,Osmania University
Asian Pacific Journal of Tropical Biomedicine | Year: 2012

Objective: In the recent years of research, the interest on herbal medicine is continuously increasing. Piperine is an alkaloid extracted from ripen fruits of Piper nigram and was proved in literature for its hepato protective and anti ulcer properties majorly through anti oxidant capability. Methods: In the present investigation gastro retentive, both floating and mucoadhessive microspheres are evaluated for the hepato protection in paracetamol induced model and gastric protection in rats and a comparison was done with conventional microspheres and pure form of piperine. Results: The results clearly showed the significant decrease in the serum levels of the marker enzymes in hepato protective study supported by histopathology along with reduced ulcer index in anti ulcer activity. Conclusion: This clearly indicates that there is an increase in both activities of floating microspheres, mucoadhessive microspheres when compared with the PP and conventional microspheres. © 2012 Asian Pacific Tropical Biomedical Magazine.

Bhadlawala S.,JVIMS KBS MCA College Jamnagar | Chachapara K.,Technocrats Institute of Technology
NUiCONE 2015 - 5th Nirma University International Conference on Engineering | Year: 2015

Data Growth and Data complexity will increase day by day. Present day needs of data will require unstructured and more access will lead to more data backup, audit, security concerns and need of preparing reduplication. Term cloud computing has opened entire new domain of computability, reliability and efficiency for organizations in term of private cloud computing. It can now focus on providing targeted services and overcome challenges to consumers rather than considering infrastructure and resource issues. Nowadays, sharing secure data to another person without authentication and authorization it with can be more and more difficult for the off-premise cloud which leads to some key points like the security of cloud data should be considered, sharing of cloud data as per requirement should be done. This research paper is based on providing some mechanism to allow secure file sharing for off-premise cloud computing among various cloud users. This paper proposes a framework that can be followed easily to share the file using roll management concept which residing on the cloud with another cloud user. In this framework, a concept of cryptography has been used to generate the secure key that can be shared among users. Cryptography allows encryption and decryption of different normal text to some cipher text that cannot be interpreted easily. This paper proposes the secure mechanism of generating key, sharing a key and validating use of the key for given file. © 2015 IEEE.

Irfan M.,Technocrats Institute of Technology | Verma S.,A And G Pharmaceutical, Inc. | Ram A.,A And G Pharmaceutical, Inc.
Asian Journal of Pharmaceutical and Clinical Research | Year: 2012

The goal of this study was to develop and evaluate the potential use of transfersome vesicles in the transdermal drug delivery of Ibuprofen. It was investigated by encapsulating the drug in various formulations of composed of various ratios of soya phosphatidylcholine, span 80 and tween 80, prepared by lipid film hydration by rotatary evaporation method and evaluated for particle shape, size, zeta potential, entrapment efficiency (%EE),elasticity, stability, and in vitro skin permeation. The vesicles were spherical in structure as confirmed by Scanning Electron Microscopy and TEM, the vesicle size of best formulation for Span 80 and Tween 80 was 962 nm and 2250 nm respectively, and zeta potential (negatively charged) for Span 80 and Tween 80 was found to be -16.1 and -17.5 respectively. The %EE of ibuprofen in the vesicles was 47.8±2.2 and the elasticity of both increases with increase in surfactant conc. and were found to be 34.4±1.4 and 26.5±1.6. Stability studies for Transferosome were carried out for 5 weeks at 450C. In vitro skin permeation studies were carried by human cadaver skin using franz diffusion cell, and drug release after 24 hrs and flux was found 2.5824 and 1.9672 ug/cm2/hr respectively. Fourier Transform Infrared Spectroscopy (FT-IR) and Differential Scanning Calorimetry (DSC) analysis indicated that the application of transfersomes significantly disrupted the stratum corneum lipid. It is evident from this study that transfersomes are a promising prolonged delivery system for Ibuprofen and have reasonably good stability characteristics. This research suggests that ibuprofen loaded transfersomes can be potentially used as a transdermal drug delivery system.

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