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Search Results: 1 - 10 of 114 matches for " Arabinda Adak "
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Ectopic spleen in the pancreas of New Zealand White rabbits
Arabinda Adak,M. C. Prasad,P. S. Lonkar,U. M. Kapurkar
Veterinary World , 2013, DOI: 10.5455/vetworld.2013.360-362
Abstract: Five cases (male-2, female-3) of ectopic splenic tissue in the pancreas of New Zealand White rabbits were recorded out of 144 rabbits aged between 16-25 weeks. The histomorphology of the ectopic splenic tissue compared well with normal spleen. The pancreatic parenchyma bearing ectopic splenic tissue did not exhibit any change or abnormality of pathological significance except less number of islets of Langerhans in comparison to other areas. The present cases were considered to be rare incidental finding and congenital in origin. [Vet World 2013; 6(6.000): 360-362]
Studies on anti-hypercholesterolemic activity of Indanyl tetrazoles
M Adak
Journal of Institute of Medicine , 2010, DOI: 10.3126/joim.v32i3.4956
Abstract: Introduction: Clinically useful non-steroidal antihyperlipidemic drugs are now in the market for the treatment of patients suffering from hypercholesterolemia. Indan acids, which belong to non-steroidal aryl alkanoic acids class acids have been reported to possess varying degrees of cholesterol lowering activity. Keeping the above points in view exploration for better anti-hypercholesterolemic activity of indanyl tetrazole derivatives was undertaken. Methods: Five-week-old male albino Charles Foster rats (120± 10 g) for normocholesterolemic and seven-week-old rats (130±10g) for hypercholesterolemic studies were used. On the 0-day and 14th day, tail vein blood was drawn from the overnight fasted animals respectively. Biochemical measurements were carried out using biochemical kits (Span, India) and an automated biochemical analyzer (Vitros-250, Johnson and Johnson Co. USA). Results: The compound - V and VI exhibited almost same significant level of cholesterol lowering (p<0.01) activity. On closer look its reveal that the compound- VI exhibit triglyceride lowering (p<0.01) activity among the groups around 14 days of treatment on normocholesterolemic rats. Test compound- V (p<0.05) and compound- VI (p<0.001) have significant anti-hyper-cholesterolemic activity while clofibrate has no such activity on hypercholesterolemic rats. Conclusions: Indanyl tetrazole derivatives, 5-(62 -methoxyindan-12 -yl) methyltetrazole ( V ) and 5- (52 , 62 -dimethoxyindan-12 -yl) methyltetrazole ( VI ) were more promising than their analogs in respect to their anti-hypercholesterolemic activity. DOI: http://dx.doi.org/10.3126/joim.v32i3.4956 Journal of Institute of Medicine , December, 2010; 32:3 24-29
The Symmetric Teleparallel Gravity
M. Adak
Physics , 2006,
Abstract: We study symmetric teleparallel (STP) gravity model, in which only spacetime non-metricity is nonzero. First we obtain STP equivalent Einstein-Hilbert Lagrangian and give an approach for a generic solution in terms of only metric tensor. Then we obtain a spherically symmetric static solution to the Einstein's equation in STP space-time and discuss the singularities. Finally, we study a model given by a Lagrangian 4-form quadratic in non-metricity. Thus, we seek Schwarzschild-type solutions because of its observational success and obtain some sets of solutions. Finally, we discuss physical relevance of the solutions.
A Note on Parallel Transportation in Symmetric Teleparallel Geometry
Muzaffer Adak
Physics , 2011,
Abstract: I discuss autoparallel curves and geodesics in the symmetric teleparallel geometry.
Non-minimally coupled Dirac equation with torsion: Poincaré gauge theory of gravity with even and odd parity terms
Muzaffer Adak
Physics , 2011, DOI: 10.1088/0264-9381/29/9/095006
Abstract: We take a Dirac field non-minimally coupled to the gravitational field within the framework of the Poincar\'e gauge theory of gravity with torsion and curvature. We study the subcase of "weak" gravity, that is, the gravitational Lagrangian depends only linearly on the curvature and quadratically on the torsion. We include all pieces in curvature and torsion that are of odd parity. The second field equation of gravity is derived by varying the Lorentz connection. We solve it with respect to the torsion and decompose the first field equation of gravity and the Dirac equation into Einsteinian pieces and post-Riemannian terms.
Nonmetricity and torsion induced by dilaton gravity in two dimension
Muzaffer Adak
Physics , 2005, DOI: 10.1007/s10714-006-0298-x
Abstract: We develop a theory in which there are couplings amongst Dirac spinor, dilaton and non-Riemannian gravity and explore the nature of connection-induced dilaton couplings to gravity and Dirac spinor when the theory is reformulated in terms of the Levi-Civita connection. After presenting some exact solutions without spinors, we investigate the minimal spinor couplings to the model and in conclusion we can not find any nontrivial dilaton couplings to spinor.
Robust Steganography Using LSB-XOR and Image Sharing
Chandranath Adak
Computer Science , 2013,
Abstract: Hiding and securing the secret digital information and data that are transmitted over the internet is of widespread and most challenging interest. This paper presents a new idea of robust steganography using bitwise-XOR operation between stego-key-image-pixel LSB (Least Significant Bit) value and secret message-character ASCII-binary value (or, secret image-pixel value). The stego-key-image is shared in dual-layer using odd-even position of each pixel to make the system robust. Due to image sharing, the detection can only be done with all the image shares.
Dual Layer Textual Message Cryptosystem with Randomized Sequence of Symmetric Key
Chandranath Adak
Computer Science , 2013,
Abstract: This paper introduces a new concept of textual message encryption and decryption through a pool of randomized symmetric key and the dual layer cryptosystem with the concept of visual cryptography and steganography. A textual message is converted into two image slides, and the images are encrypted through two different randomized sequences of symmetric key. The decryption is done in the reverse way. The encrypted images are decrypted by those two symmetric keys. The decrypted image slides are merged together and converted into textual message. Here the image sharing is done through the concept of visual cryptography and the textual message to image conversion is done through the concept of steganography.
OPTICS Based Coverage in Wireless Sensor Network
Chandranath Adak
Computer Science , 2014,
Abstract: This paper deals with the coverage problem of wireless sensor network. We use the density based clustering technique - OPTICS to cover a target region with less number of sensor nodes. OPTICS works well to identify the outliers, core points and it obtains the denser regions. We define a level of acceptance to find next appropriate sensor in the region. We eliminate overlapped area and obtain a decision tree to minimally cover up the target region.
Gabor Filter and Rough Clustering Based Edge Detection
Chandranath Adak
Computer Science , 2014,
Abstract: This paper introduces an efficient edge detection method based on Gabor filter and rough clustering. The input image is smoothed by Gabor function, and the concept of rough clustering is used to focus on edge detection with soft computational approach. Hysteresis thresholding is used to get the actual output, i.e. edges of the input image. To show the effectiveness, the proposed technique is compared with some other edge detection methods.
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