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Search Results: 1 - 10 of 190109 matches for " G. Swamy; "
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Double diffusive natural convection in power-law fluid saturated porous medium with Soret and Dufour Effects
Srinivasacharya, D.;Reddy, G. Swamy;
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2012, DOI: 10.1590/S1678-58782012000400014
Abstract: the effects of double diffusive natural convection heat and mass transfer along a vertical plate embedded in a power-law fluid saturated darcy porous medium in the presence of soret and dufour effects are studied. the governing partial differential equations are transformed into ordinary differential equations using similarity transformations and then solved numerically. a parametric study of the physical parameters involved in the problem is conducted and a representative set of numerical results is illustrated graphically.
Effect of Included Angle in V-Groove Butt Joints on Shrinkages in Submerged Arc Welding Process
G. MAHENDRAMANI,N. LAKSHMANA SWAMY
International Journal of Engineering Science and Technology , 2012,
Abstract: The problems of distortion, residual stresses and reduced strength of structure in and around a welded joint are of major concern in the shipbuilding industry and in other similar manufacturing industries. The predictions of the degree of shrinkages in ship panels due to welding are of great importance from the point of view of dimensional control and it is important to analyze transverse and longitudinal shrinkage. This paper deals with the experimental analysis of transverse and longitudinal shrinkage in single and double V-groove butt joints in submerged arc welding by varying included angle and keeping process parameters constant. It is found that, the maximum shrinkage was at the centre of the plate and minimum at the ends. It is also found that, the transverse and longitudinal shrinkage increase with increase in the included angle. There is a significant increase in the transverse shrinkage and small variation in longitudinal shrinkage.
Visual Secret Sharing Based Digital Image Watermarking
B. Surekha,G N Swamy
International Journal of Computer Science Issues , 2012,
Abstract: In this paper, a spatial domain image watermarking technique based on Visual Secret Sharing (VSS) and unique statistical properties is proposed. A random looking image is generated during watermark hiding process and is secretly registered with an arbitrator for verification during conflicts. Another random looking image is generated during watermark revelation stage and is combined with the existing one, to recover the watermark. This whole process is done without altering the image to be protected and hence the quality of the cover image is high. When compared with similar existing techniques, the proposed technique has three main advantages: Provides greater convenience in carrying and storing the intermediate images called shares; Provides high security; Reduce tradeoff between spatial and frequency domain techniques in terms of robustness
Variant Branching Pattern of Axillary Artery: A Case Report
Swamy Ravindra Shantakumar,K. G. Mohandas Rao
Case Reports in Vascular Medicine , 2012, DOI: 10.1155/2012/976968
Abstract: During routine dissection of an approximately 50-year-old male cadaver for the undergraduate medical students at Melaka Manipal Medical College, Manipal University, Manipal, we came across a variation in branching pattern of right axillary artery. The second part of axillary artery gave rise to a common trunk which divided into the subscapular and lateral thoracic arteries. The third part of right axillary artery gave rise to anterior and posterior circumflex humeral arteries. Variations in the branching pattern of axillary artery are important for the surgeons performing interventional or diagnostic procedures in cardiovascular diseases.
ANIMAL MANURE AS RAW MATERIAL FOR VERMICOMPOSTING
G. P. Kalmath,M. Narayana Swamy
Wayamba Journal of Animal Science , 2012,
Abstract: Animal manure is one of the major underutilized resources in many countries. Animal manure mainly refers to excreta (dung) and urine along with the bedding material mixed with soil. Animal manure is available either in dairies, slaughterhouses or at the backyards of the houses (Mukund and Chavan, 2007). Along with other animal wastes and agro-industrial wastes, animal manure is creating environmental problems like, dispensing foul odors, occupying vast areas, ground and surface water pollution etc. The manure generated by animal production is currently receiving a great deal of attention in the water quality arena. Adoption of better animal waste management practices can reduce the transport of nutrients and pathogens from animal farms to ground and surface water, which could improve the water quality.
The Influence of Combined Uphill and Downhill Running on Speed Parameters
Shambhulingayya swamy,K Sekar Babu,G Ravindran
World Journal of Science and Technology , 2011,
Abstract:
Intraoperative blood glucose levels in neurosurgical patients : an evaluation of two fluid regimens.
Swamy M,Murthy H,Rao G
Neurology India , 2001,
Abstract: Based on the evidence that hyperglycaemia aggravates ischaemic cerebral injury, it has been suggested that blood glucose levels be kept within 200 mg/dL during intracranial neurosurgery. Hypoglycaemia, however, can be a serious problem if glucose-containing solutions are avoided during the first four hours, as suggested in some studies. In order to explore the possibility of administering glucose in moderation so that the blood glucose levels are within acceptable limits, but at the same time the risk of hyoglycaemia is eliminated, we compared two intraoperative fluid regimens. Of the 52 neurosurgical patients studied, 32 patients received alternately 500 ml of 5% dextrose in normal saline and Ringer′s lactate (DNS/RL Group) and 18 patients received alternately 500 ml of Ringer′s lactate and normal saline (RL/NS Group). Blood glucose concentrations were determined at the end of each unit of fluid, until the patient received 4 units of fluid. In the DNS/RL group, blood glucose values peaked with the administration of each unit of DNS and tended to return towards the baseline with the subsequent RL, but remained higher than the previous control value. In the RL/NS group, there was a progressive increase in blood glucose values throughout the study period, but the increase was not statistically significant. The blood glucose levels were significantly different between the two groups after each unit of fluid except at the end of the fourth unit. Two patients in the RL/NS group had hypoglycaemia. In conclusion, the DNS/RL regimen maintains blood glucose levels within acceptable limits while avoiding the risk of hyperglycaemia. Withholding glucose completely, lowers blood glucose levels, but carries a risk of hypoglycaemia in some patients.
Variant Branching Pattern of Axillary Artery: A Case Report
Swamy Ravindra Shantakumar,K. G. Mohandas Rao
Case Reports in Vascular Medicine , 2012, DOI: 10.1155/2012/976968
Abstract: During routine dissection of an approximately 50-year-old male cadaver for the undergraduate medical students at Melaka Manipal Medical College, Manipal University, Manipal, we came across a variation in branching pattern of right axillary artery. The second part of axillary artery gave rise to a common trunk which divided into the subscapular and lateral thoracic arteries. The third part of right axillary artery gave rise to anterior and posterior circumflex humeral arteries. Variations in the branching pattern of axillary artery are important for the surgeons performing interventional or diagnostic procedures in cardiovascular diseases. 1. Introduction Axillary artery is a continuation of subclavian artery, extending from the outer border of first rib to the lower border of teres major muscle where it continues as brachial artery. The pectoralis minor muscle is related anteriorly to the axillary artery and it divides axillary artery into three parts, first part extending from outer border of first rib to the upper border of pectoralis minor muscle, second part lies behind the pectoralis minor muscle, and third part extending from lower border of pectoralis minor muscle to lower border of teres major muscle. Axillary artery normally gives off superior thoracic artery from the first part, lateral thoracic artery and thoracoacromial artery from the second part, and subscapular, anterior circumflex humeral and posterior circumflex humeral arteries from the third part (Figure 1). Subscapular artery divides into circumflex scapular and thoracodorsal arteries [1]. Figure 1: Schematic representation of normal branching pattern of axillary artery showing superior thoracic artery (STA) from the first part; thoracoacromial artery (TAA) and lateral thoracic artery (LTA) from the second part; subscapular artery (SSA), anterior circumflex humeral artery (ACHA), and posterior circumflex humeral artery (PCHA) from the third part of axillary artery. 2. Case Report During routine dissection for undergraduate Medical students of Melaka Manipal Medical College, Manipal University, Manipal, we came across a variation in branching pattern of right axillary artery in a male cadaver of approximately 50 years of age. The left axillary artery was found to be normal. The first part of axillary artery gave rise to superior thoracic artery as usual, but the second part gave a common trunk which divided into the lateral thoracic and subscapular arteries. The third part of the artery gave origin to anterior and posterior circumflex humeral arteries (Figure 2). This is a novel
Effect of Particulate Reinforcements on the Mechanical Properties of Al6061-WC and Al6061-Gr MMCs  [PDF]
A. R. K. Swamy, A. Ramesha, G.B. Veeresh Kumar, J. N. Prakash
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.1012087
Abstract: This paper presents the comparative study of the mechanical properties of Al6061-Tungsten carbide composites containing Tungsten carbide (WC) particulate, and Al6061-graphite particulate composites containing graphite particles. The reinforcing particulates in the MMCs vary from 0% to 4% by weight. The 'vortex method' of production was employed to fabricate the composites, in which the reinforcements were poured into the vortex created by stirring the molten metal by means of a mechanical agitator. The composites so produced were subjected to a series of tests. The results of this study revealed that as the Tungsten carbide particle content was increased, there were significant increases in the ultimate tensile strength, hardness and Young's modulus, accompanied by a reduction in its ductility. There was, however, only a very marginal increase in the compressive strength, where as in graphite reinforced composites as the graphite content was increased, there were significant reduction in hardness and monotonic increases in the ductility, ultimate tensile strength (UTS), compressive strength and Young's modulus of the composite, An attempt is made in the paper to provide explanations for these phenomena.
The lamellar-to-isotropic transition in ternary amphiphilic systems
U. S. Schwarz,K. Swamy,G. Gompper
Physics , 1996, DOI: 10.1209/epl/i1996-00196-9
Abstract: We study the dependence of the phase behavior of ternary amphiphilic systems on composition and temperature. Our analysis is based on a curvature elastic model of the surfactant film with sufficiently large spontaneous curvature and sufficiently negative saddle-splay modulus that the stable phases are the lamellar phase and a droplet microemulsion. In addition to the curvature energy, we consider the contributions to the free energy of the long-ranged van der Waals interaction and of the undulation modes. We find that for bending rigidities of order k_B T, the lamellar phase extends further and further into the water apex of the phase diagram as the phase inversion temperature is approached, in good agreement with experimental results.
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