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Search Results: 1 - 10 of 326498 matches for " Nagaraj S.Nayak "
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Numerical Study on Selective Catalytic Reduction System to Determine DeNOx Efficiency in Diesel Engine
Manoj Kumar A.P,P.Mohanan,Nagaraj S.Nayak
International Journal on Theoretical and Applied Research in Mechanical Engineering , 2012,
Abstract: Environmental Pollution is the major problem in the world, and the main cause for this is Vehicle Exhaust Gases. NOx is the major pollutant coming out from vehicles, which need to be controlled in order to meet stringent limits on emission standards (EuroV) .Several researchers had carried out experiments using different aftertreatment devices in order to achieve maximum DeNOx conversion. Results showed that Urea-SCR system is a promising approach to achieve substantial NOx reduction performance. The Present study focuses on one dimensional (1D) steady state kinetic simulation of SCR using CFD code AVL BOOST. The relevant reactions and boundary conditions are considered for a simulation in a square celled catalyst. The conversion of NOx and NH3 are obtained from the simulation. The results are validated through AVL code FIRE which considers the three dimensional flow inside the catalyst. Similar boundary conditions and reactions are taken into account as given in BOOST. The results are also validated through experimental results obtained from the literature.
Design Simulation and Fabrication of a Dual Band Frequency Reconfigurable Monopole Antenna for Wi-Fi and WiMAX Applications  [PDF]
Prasanna Paga, H. C. Nagaraj, T. S. Rukmini
Open Journal of Antennas and Propagation (OJAPr) , 2017, DOI: 10.4236/ojapr.2017.53012
Abstract:
Nowadays, wireless systems require compact multi band antennas that can dynamically change some of its fundamental parameters such as frequency band, polarization and radiation pattern. The novelty of the proposed work lies in using two conducting strips that are perpendicular to each other. The longer strip resonates at 2.4 GHz and the shorter strip resonates at 3.5 GHz. The length and width of the Ground plane is made equal to length of the main arm and length of the side arm respectively. The results are obtained by simulating the antenna structure using simulation tool Ansoft HFSS v15.0. The Simulated antenna Gains were 6.2364 dBi and 7.1758 dBi for frequencies of 2.4 GHz and 3.5 GHz respectively. The antenna dimensions are 50 × 25 × 1.6 mm3 on a 1.6 mm thick FR-4 substrate.
A study on coverage and compliance of mass drug administration programme for elimination of filariasis in Udupi district, Karnataka India
Ashwini Kumar,Pawan Kumar,Kondagunta Nagaraj,Divakar Nayak
Journal of Vector Borne Diseases , 2009,
Abstract:
A Parametric Approach to Non-Convex Optimal Control Problem  [PDF]
S. Mishra, J. R. Nayak
American Journal of Operations Research (AJOR) , 2014, DOI: 10.4236/ajor.2014.42006
Abstract:

In this paper we have considered a non convex optimal control problem and presented the weak, strong and converse duality theorems. The optimality conditions and duality theorems for fractional generalized minimax programming problem are established. With a parametric approach, the functions are assumed to be pseudo-invex and v-invex.

Agricultural Development in Karnataka -A Geographical Analysis
H Nagaraj,S L Karlwad
Golden Research Thoughts , 2012, DOI: 10.9780/22315063
Abstract: Alleviation of poverty and reduction in inequalities of agricultural development has been the central theme in the Indian development planning since its inception.Decentralization of the development planning from the center and state to District, Block and village levels has also been emphasized as an effective way of achieving stated objectives from the beginning of the planning era. A district has often been suggested as the basic planning unit in the decentralization process and over the recent past, the working group on district planning constituted under the auspices of the planning Commission recommended that the district planning bodies should be vested with the functional powers of sect oral allocation of divisional plan outlays
Reconstructing vector bundles on curves from their direct image on symmetric powers
Indranil Biswas,D. S. Nagaraj
Mathematics , 2012,
Abstract: Let $C$ be an irreducible smooth complex projective curve, and let $E$ be an algebraic vector bundle of rank $r$ on $C$. Associated to $E$, there are vector bundles ${\mathcal F}_n(E)$ of rank $nr$ on $S^n(C)$, where $S^n(C)$ is $ $n$-th symmetric power of $C$. We prove the following: Let $E_1$ and $E_2$ be two semistable vector bundles on $C$, with ${\rm genus}(C)\, \geq\, 2$. If ${\mathcal F}_n(E_1)\,= \, {\mathcal F}_n(E_2)$ for a fixed $n$, then $E_1 \,=\, E_2$.
Presence of Wormian bone at bregma and paired frontal bone in an Indian skull
Nayak S
Neuroanatomy , 2006,
Abstract: The occurrence of Wormian (sutural) bones in the skull is quite common. Presence of metopic suture is alsoknown. We found a case of complete metopic suture resulting in doubling of the frontal bone in an adult Indianskull. The same skull had a large Wormian bone at the bregma. Knowledge of this variation is very importantfor radiologists, orthopedic and neurosurgeons. Similar case has not been reported hitherto.
An unusual case of trifurcation of the sciatic nerve
Nayak S
Neuroanatomy , 2006,
Abstract: The sciatic nerve is the largest branch of the sacral plexus. It usually divides at the upper angle of the popliteal fossa. One of its common variations is high division into tibial and common peroneal nerves. Low divisions are rare. Trifurcation of the sciatic nerve is extremely rare. Here, one such unusual type of trifurcation of sciatic nerve has been reported. The sciatic nerve gave an abnormal trunk in addition to the tibial and common peroneal nerves. The abnormal trunk divided into lateral cutaneous nerve of the calf and the peroneal communicating nerve. Since the point of trifurcation was in the middle of the popliteal fossa, it is of clinical and surgical importance.
Bilateral absence of foramen transversarium in atlas vertebra: a case report
Nayak S
Neuroanatomy , 2007,
Abstract: Atlas is the first cervical vertebra. It does not have a body like other cervical vertebrae. It has two transverse processes, each one of which bears a foramen transversarium. The vertebral artery passes through this foramen.We noticed a bilateral absence of foramen transversarium in an atlas vertebra during osteology demonstration classes. The knowledge of this variation may be of importance during the interventions to that area and also of interest for anthropologists.
Absence of musculocutaneous nerve associated with clinically important variations in theformation, course and distribution of the median nerve – a case report
Nayak S
Neuroanatomy , 2007,
Abstract: Variations in the nerves of the upper limb are not uncommon. We saw the variations in the origin, course anddistribution of the median nerve in the left upper limb. The musculocutaneous nerve was absent. The mediannerve was formed in the upper part of the arm, in front of the brachial artery. The nerve passed deep to thebrachial artery from lateral to medial side. Median nerve supplied the biceps, coracobrachialis and brachialismuscles and gave lateral cutaneous nerve of the forearm. The third part of the axillary artery was compressedby two abnormal bands connecting medial root of median nerve with its lateral root.
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