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Ranganathan Jaya,Rangarajan Sundaresan Mohan Kumar,Ramasamy Srinivasan 대한영상치의학회 2013 Imaging Science in Dentistry Vol.43 No.3
It has been a challenge to establish the accurate diagnosis of developmental tooth anomalies based on periapical radiographs. Recently, three-dimensional imaging by cone beam computed tomography has provided useful information to investigate the complex anatomy of and establish the proper management for tooth anomalies. The most severe variant of dens invaginatus, known as dilated odontome, is a rare occurrence, and the cone beam computed tomographic findings of this anomaly have never been reported for an erupted permanent maxillary central incisor. The occurrence of talon cusp occurring along with dens invaginatus is also unusual. The aim of this report was to show the importance of cone beam computed tomography in contributing to the accurate diagnosis and evaluation of the complex anatomy of this rare anomaly.
Ranganathan, Suresh,Raju, Prabu,Arunachalam, Vijayaraj,Krishnamoorty, Giribabu,Ramadoss, Manigandan,Arumainathan, Stephen,Vengidusamy, Narayanan Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.6
Poly(anthranilic acid) was synthesized by rapid mixing method using 5-sulphosalicylic acid as a dopant. The synthesized polymer was characterized by various techniques like FT-IR, UV-Visible, and X-ray diffraction $etc.$, The FT-IR studies reveal that the 5-sulphosalicylic acid is well doped within the polymer. The morphological property was characterized by field emission scanning electron microscopic technique. The electrochemical properties of the polymer were studied by cyclic voltammetric method. The synthesized polymer was used to modify glassy carbon electrode (GCE) and the modified electrode was found to exhibit electrocatalytic activity for the oxidation of uric acid (UA).
Ranganathan Sripriya,Sathi Rama Reddy 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.5
A quadratic boost converter (QBC) off ers a wide range of operations and reduced input current ripple that is suitable for hybrid PV/Wind systems. This paper presents a fast response sliding mode controller with more state feedback for the multi-input QBC system connected to DC micro-grid. The control scheme elaborates on the systematic process of arriving controllable canonical form, the advent of the sliding surface, determination of control law, and explanation of sliding mode existence manifold—the controllable canonical form obtained from state-space equations. The proposed controller ensures a model reference robust dynamics against changing operating conditions, variations of circuit parameters, and external disturbances. Obtained sliding surface satisfy Routh–Hurwitz property, and the switching law maintains the converter in sliding mode. The dynamics are studied using MATLAB/Simulink, and the stability of the system is analysed using the bode plot. A prototype is set up for the two-input QBC, and the experimental results are presented to validate the simulation results.
Jaya, Ranganathan,Kumar, Rangarajan Sundaresan Mohan,Srinivasan, Ramasamy Korean Academy of Oral and Maxillofacial Radiology 2013 Imaging Science in Dentistry Vol.43 No.3
It has been a challenge to establish the accurate diagnosis of developmental tooth anomalies based on periapical radiographs. Recently, three-dimensional imaging by cone beam computed tomography has provided useful information to investigate the complex anatomy of and establish the proper management for tooth anomalies. The most severe variant of dens invaginatus, known as dilated odontome, is a rare occurrence, and the cone beam computed tomographic findings of this anomaly have never been reported for an erupted permanent maxillary central incisor. The occurrence of talon cusp occurring along with dens invaginatus is also unusual. The aim of this report was to show the importance of cone beam computed tomography in contributing to the accurate diagnosis and evaluation of the complex anatomy of this rare anomaly.
Suresh Ranganathan,Prabu Raju,Vijayaraj Arunachalam,Giribabu Krishnamoorty,Manigandan Ramadoss,Stephen Arumainathan,Narayanan Vengidusamy 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.6
Poly(anthranilic acid) was synthesized by rapid mixing method using 5-sulphosalicylic acid as a dopant. The synthesized polymer was characterized by various techniques like FT-IR, UV-Visible, and X-ray diffraction etc., The FT-IR studies reveal that the 5-sulphosalicylic acid is well doped within the polymer. The morphological property was characterized by field emission scanning electron microscopic technique. The electrochemical properties of the polymer were studied by cyclic voltammetric method. The synthesized polymer was used to modify glassy carbon electrode (GCE) and the modified electrode was found to exhibit electrocatalytic activity for the oxidation of uric acid (UA).
Balamurugan Ranganathan,Kandasamy Palani 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
Pest control is a major challenging component in agricultural and horticultural crops. Recently, the light-emitting diode (LED) trap driven by solar energy is a growing eco-friendly technology in pest control. The study was aimed to design, fabricate and investigate the effectiveness of a portable solar-powered LED trap for monitoring insect pests. The trap is compressed into a photovoltaic panel, battery, LED array, solar rectifier, insect collection tray, and PVC legs. Four different coloured LEDs viz., ultraviolet (UV)-405 nm, blue-470 nm, green-525 nm and red-630 nm were studied. The study was conducted in a groundnut field during the autumn season for 15 days. The results showed that the UV LED trap captured significantly more insects than the blue, green, and red LED traps except for Helicoverpa armigera. The average attraction of Spodoptera litura, Aproaerema modicella, Amsacta albistriga, Scirtothrips dorsalis, Aphis craccivora, and Empoasca kerri population to UV LED trap was 77.17 ± 18.89, 64.67 ± 12.91, 39 ± 16.80, 43.33 ± 18.30, 38.33 ± 17.08 and 33.17 ± 10.94, respectively. The red LED trap captured the least number of insects; however, the attraction of A. albistriga to the red LED was higher than the blue and green LED traps. Arcsine transformation (AT) was applied to transform experimental trap efficiency. UV LED trap had a significantly higher AT value than other LED traps. Overall mean AT values for UV, green, blue, and red LED traps were 34.98, 31.06, 29.87 and 22.87, respectively. The proposed portable solar-assisted LED trap could be a promising and effective pest control tool in areas where inconsistent electricity supply.