Informatics Publishing Limited

E. Geetha Reddy , G. Srinivasa Rao ¹, K. Srinivasa Reddy ²

Affiliations
1 Vignans University, Guntur, Department of EEE, IN
2 NITS, Hyderabad, Department of ECE, IN

Abstract

The Hybrid electric vehicle (HEV) has become one of the most promising vehicles in the automobile industry due to its energy saving ability and low emission of harmful pollutants. Battery management system, which has acceptable life cycle, remains the major roadblock to large-scale production of Electric vehicles and Hybrid electric vehicles, which consists of high power density batteries. In the last few years the pollution problems and the increase of the cost of fossil energy (oil, gas) have become planetary problems. The car manufacturers started to react to the urban pollution problems in nineties by commercializing the electric vehicle. But the battery weight and cost problems were not solved. The batteries must provide energy and peaks power during the transient states. These conditions are severe for the batteries. To decrease these severe conditions, the super capacitors and batteries associate with a good power management present a promising solution. Simulink, a model is a collection of blocks which, in general, represents a system. This paper emphasis more on the management of the energy provided by super capacitor Packs. Each super capacitors module is made of 108 cells with a maximum voltage of 270V. The multi boost and multi full bridge converter topologies are tested to define the best topology for the embarked power management.. The experimental and simulated results validate the proposed two converter topologies presented in this paper.

Keywords

Power Management, Super Capacitors, Multi Boost and Full Bridge Converters, Hybrid Electric Vehicle.

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Chandra Shekhar Jha ¹, Rajashekar Gopalakrishnan ¹, Kiran Chand Thumaty ¹, Jayant Singhal ¹, C. Sudhakar Reddy ¹, Jyoti Singh ¹, S. Vazeed Pasha ¹, Suresh Middinti ¹, Mutyala Praveen ¹, Arul Raj Murugavel ¹, S. Yugandhar Reddy ¹, Mani Kumar Vedantam ¹, Anil Yadav ¹, G. Srinivasa Rao ¹, Gururao Diwakar Parsi ¹, Vinay Kumar Dadhwal ¹

Affiliations
1 Forestry and Ecology Group, National Remote Sensing Centre (ISRO), Balanagar, Hyderabad 500 037, IN

Abstract

ecological, economic and social effects worldwide. Globally, forest fires are considered as one of the major drivers of climate change having deleterious impacts on the earth and environment as studies reveal their significance in producing large amounts of trace gases and aerosol particles, which play a pivotal role in tropospheric chemistry and climate.

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Syed Sadarunnisa ¹, C. Madhumathi ¹, G. Srinivasa Rao ¹, B. Sreenivasulu ¹

Affiliations
1 Horticultural Research Station, Anantharajupet – 516105, IN

Abstract

A field experiment was conducted at Horticultural Research Station, Anantharajupet, to study the effect of fertigation on growth and yield of turmeric to standardize the quantum of fertilizers to be given through fertigation for improving the productivity of turmeric. This experiment was carried out in a randomized block design with 4 replications. The treatments consisted of T1 (100% RDF through drip), T2 (75% RDF through drip), T3 (50 % RDF through drip), T4 (100 % RDF through soil and drip irrigation) and control (100 % RDF through soil and conventional irrigation). RDF, i.e., recommended dose of fertilizers comprised of 180 Kg N, 60 Kg P2 O5 and 120 Kg K2O ha^-1. In the case of T1-T3, N and K alone was applied through drip, while, phosphorus was applied as basal dose. Data of three seasons showed that, there was significant difference between farmers' practice and fertigation treatments and it was observed that the treatment in which 100% fertilizers was applied through drip recorded the maximum plant height (99.36 cm), number of tillers per plant (3.41) and fresh rhizome yield (12.24 t acre^-1) this was on par with the treatment in which 75% fertilizers were applied through drip. The B:C ratio was highest (1.49) in plants supplied with 75% RDF through drip. This shows that, fertigation with 75% RDF through drip in turmeric is profitable.

Keywords

Fertigation, Turmeric, Growth, Yield.

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C. M. Bhatt ¹, G. Srinivasa Rao ¹, Asiya Begum ¹, P. Manjusree ¹, S. V. S. P. Sharma ¹, L. Prasanna ¹, V. Bhanumurthy ¹

Affiliations
1 RS Applications Area, Disaster Management Support Division, National Remote Sensing Centre, Indian Space Research Organisation, Balanagar, Hyderabad 500 037, IN

Abstract

Satellite images provide information on the flood disaster footprints, which is essential for assessing the disaster impact and taking up flood mitigation activities. The Brahmaputra floods that occurred during June-July 2012 devastated a large part of Assam. This article discusses the maximum spatial extent affected due to the flood event, villages marooned and population affected, with the aid of multi-temporal satellite images coupled with the hydrological observations and freely available gridded population data. The study shows that about 4.65 lakh ha area was submerged, 23 of the 27 districts in Assam had more than 5% of the total geographical area submerged, about 3829 villages marooned and 23.08 lakh people were affected. Identification of the spatial extent of areas most vulnerable to flooding, captured from the satellite images acquired during the peak flood period will be helpful for prioritizing appropriate flood control measures in the flood-affected regions.

Keywords

Disaster Footprints, Floods, GIS, Inundation, Population, Remote Sensing.

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P. Venkateswara Rao ¹, G. Srinivasa Rao ¹

Affiliations
1 Kakatiya Institute of Technology and Science, Warangal-506015, A P, IN

Abstract

Biodiesel is emerging as a promising substitute of an alternative fuel and has gained significant attention due to the predicted depletion of conventional fuels availability in near future and environmental pollution concern. Utilization of biodiesel produced from Jatropha oil by transesterification process is one of the most promising options to replace conventional fossil diesel fuel. The physical properties such as density, Kinematic viscosity, flash point, carbon residue, Pour point and Cetane number were found out for diesel, Jatropha oil and Jatropha Oil Methyl Ester (JOME) produced in the laboratory. Properties obtained for the Jatropha oil methyl ester are very closely matched with the values of conventional diesel fuel and can be used without any modification in the existing diesel engine.

Keywords

Jatropha Oil, JOME, Transesterification, Biodiesel, Characterization.

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G. Venkateswara Rao ¹, G. Veereswara Swamy ², G. Srinivasa Rao ¹, P. Madhusudhana Reddy ¹

Affiliations
1 Department of Information Technology, GIT, GITAM University, Visakhapatnam-45, IN
2 Department of Computer Science, GIS, GITAM University, Visakhapatnam-45, IN

Abstract

Now a day’s mobile technology plays key role, in various environments identification of objects can be done manually, to improve the efficiency of an identification of objects we are using RFID tags. RFID tags track objects in supply chains, and are working their way into the pockets, belongings and even the bodies of consumers. Tag collision occurs while two or more than two tags deliver their unique identification (UID) to the reader. Since collision, which would significantly affect the efficacy of RFID, has been one of the major study issues for RFID technology, we have developed a solution, bit competed algorithm (BCA), to solve the collision problem occurred in RFID system and consequently improve the efficacy of RFID. This paper briefly presents what are the components in RFID system, Architecture of a RFID system, what are the frequency ranges used in the RFID system and what are the problems occurred in the RFID system. Here we develop a system as a prototype for object identification. By using this technology objects can be tracks more efficiently, it provides more security, it save time and money.

Keywords

RFID, Sensors, BCA, UID.

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G. Srinivasa Rao ¹, M. Radhakrishna ¹

Affiliations
1 Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai-400076, IN

Abstract

In the recent past, several global geopotential models (GGM) were made available in the public domain but all these models have variable spatial resolution which is not always readily apparent on visual inspection. In the present study, evolution tests based on the statistical estimates, spectral analysis and Image enhancement filters have been performed to assess the spatial resolution and quality of Earth Gravitational models (EGM2008, GOCE, DTU13 and SSV23.1) and crustal magnetic field model (EMAG2) over the Indian shield and its surrounding offshore regions. Our study reveals that EGM2008 and satellite altimetry (DTU13 and SSV23.1) derived gravity models provide remarkable accuracies and wavelength resolutions (<19 km for EGM 2008; <4 km for DTU13 and SSV23.1) equal to the terrestrial (ground/shipboard gravity) measurements in the continental and oceanic regions respectively. It is also evident from both 2-d forward modeling and spectral analysis that the accuracy of GOCE derived global gravity models lies at longer wavelengths (i.e.,>125 km) which is useful for the delineating the subsurface density heterogeneities and deep crustal features such as suture/contact zones. Further image enhancement interpretation of these global geopotential models resolve the major structural trends, and provide new information on the crustal architecture.

Keywords

Global Potential Models, EGM08, GOCE, EMAG2, Satellite Altimetry, India Shield, Spectral Analysis, Image Enhancement Filters.

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