Informatics Publishing Limited

S. Raghu ¹, M. R. Ravi Kumar ², M. Santosh Reddy ², S. T. Vijayalaxmi ²

Affiliations
1 Department of Plant Pathology, College of Agriculture, University, of Agricultural Sciences, Dharwad Karnataka
2 Department of Plant Pathology, College of Agriculture, University, of Agricultural Sciences, Dharwad Karnataka, IN

Abstract

Rhizome wilt has been an important threat to the cultivation of ginger. To manage the disease, an in vitro evaluation of antagonistic microorganisms, botanicals and commercial neem based formulations were tested against Ralstonia solanacearum, an incitant of rhizome wilt. The investigation was carried out to evaluate commercially available plant based pesticides and biological control agents which are relatively safe, economical and non-hazardous and can be used successfully for the management of bacterial diseases in plants. The results of the experiment indicated that Soapnut + Meswak at 20 per cent showed highest inhibition of the bacterium with 1.41 cm inhibition, followed by the combined effect of cow urine + cow dung + lime (fermented for 48 - 72 hours) at 20 per cent which showed an inhibition of 1.25 cm and both the results were on par with each other and were found significantly superior over other treatments. Among the biocontrol agents, Pseudomonas fluorescens resulted in maximum inhibition of Ralstonia solanacearum and among the neem based commercial formulation, achook has shown significantly superior efficacy at all the concentrations with greater efficacy (1.31 cm) at 30 per cent concentration. Whereas, other products were less and moderately effective among interactions

Keywords

Rhizome Wilt, Biocontrol Agents, Botanicals, Neem Based Formulations, R. Solanacearum

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E. Sanjay ¹, A. Sachin ¹, M. Uma ¹, A. B. Raju ¹, N. Iyer ¹, S. Ajit ¹, S. Raghu ¹, S. Huddar ¹, G. Arun ¹, B. B. Kotturshettar ¹, B. L. Desai ¹, Ashok Shelter ¹

Affiliations
1 B V Bhoomaraddi College of Engineering and Technology, Hubli, IN

Abstract

In this era of technological advances many engineering solutions have improved the quality of living for mankind. The focus has been on innovative designs in engineering education. This process has to be strengthened by engineering the design across all domains of engineering. Engineering Design as a course has been offered by universities restricting the curriculum to Mechanical Sciences. particularly in the domain of Mechanical and Industrial Production Engineering. The need to evolve pedagogy for Electrical Sciences students is the challenge which has been addressed through this paper. Curriculum design and delivery, course outcomes and attainments of an undergraduate course for Electrical Sciences is presented here. Pedagogical practices include domain specific case studies, skill development in laboratory, activity based learning, course projects and continuous evaluation. The implementation of course is analyzed with respect to attainment of the outcomes (ABET a-k). Validation of some of the course outcomes is demonstrated through sample case studies as applied to the specific domain of Electronics & Communication, Electrical & Electronics, and Instrumentation Technology (ECE, EEE, IT).

Keywords

Engineering Design, Electrical Sciences, ABET Outcomes, Curriculum Design.

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C. Bharatiraja ¹, S. Raghu ¹, Anand Raj ¹, Prabhat Kumar ¹

Affiliations
1 SRM University, Chennai - 603203, Tamil Nadu, IN

Abstract

Objectives: Proposed impedance network also has more degrees of freedom for varying its voltage gain, and hence, improving the versatility of the inverter. A switching algorithm is applied to this topology to control the charging time and discharging interval of inverter inductor. Methods/Statistical Analysis: On the basis of the conventional Z-source inverter[ZSI], this paper offer a novel on new type impedance source inverter which only contains one capacitor with tightly coupled three winding transformer, whose obtained voltage gain is presently not matched by existing networks operated at small duty ratio. The inverter can increase the boost factor through adjusting shoot-through duty ratio and varying the number of turns in the three winding transformer. Findings: The proposed impedance network also has more degrees of freedom for varying its voltage gain, and hence, improving the versatility of the inverter. A switching algorithm is applied to this topology to control the charging time and discharging interval of inverter inductor. A simple control strategy is applied to this configuration which is responsible for regulating the transfer power to the maximum amount and also to justify the amount of Total Harmonic Dissortion (THD) in minimum point. The working principle of the proposed Y-Source Inverter has been demonstrated by mathematical analysis in detail. The MATLAB/Simulink Simulation results are conducted to validate the analysis. Application/Improvements: For regulating the transfer power to the maximum amount in PV applications

Keywords

MATLAB/Simulink, Switching Algorithm, Z-Source Inverter.

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M. Ramya ¹, R. A. Kalaivani ¹, S. Raghu ²

Affiliations
1 Department of Chemistry, VISTAS, Pallavaram, Chennai-600117, Tamil Nadu, IN
2 Centre for Energy and Alternative Fuel, VISTAS, Chennai-600117, Tamil Nadu, IN

Abstract

Purpose of microbial Fuel Cells (MFCs) might symbolize a completely new come near to waste substance behaviour with construction of possessions clean energy. In recent years, researchers have shown that MFCs is wont to turn out electricity from water containing totally dissimilar substrates. Studies on electricity generation from the wastewater as substrate are in development. In this paper the first stage of investigational path, leather effluent and sewage wastewater was used without any mediator and in the second stage leather effluent and sewage wastewater was used methylene blue as a mediator. Performance of the MFCs as reported with different wastewater with mediator and without mediator is presented. The Microbial fuel cell equipment represents a substitute type of power in which wastewater are utilized for power construction. In this experiment we used sewage water, Cow manure, Effluent water, and rice washing water operated for 5 days and successfully generated a maximum power of 482(mV), which is adequate to control small power devices. It is a less expensive cooperative and a substitute basis of energy which will be adopted for the prospect. If power production in MFC can be enlarged this tools may provide a innovative scheme to compensate wastewater management plant in use costs, with less unnecessary sludge fabrication.

Keywords

Anode, Bioelectricity, Cathode, Maximum Power Density, Wastewater.

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S. Raghu ¹, K. Kumar ¹

Affiliations
1 Department of Agricultural Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal 609603, Puducherry, IN

Abstract

The biodiversity of spiders in agroecosystem was studied at the Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal during kharif (2019) and rabi (2019-20). The spiders were collected at weekly intervals using in situ counts, net sweeping, pitfall traps and litter sampling. A total of 30 species under 22 genera, 15 families were observed. Biodiversity indices viz., Shannon-Weiner Index (2.809- kharif and 2.766- rabi), Simpson Index (0.926- kharif and 0.909- rabi), Margalef Index (4.135- kharif and 4.22- rabi) and Pielou’s Index (0.104- kharif and 0.095- rabi) were computed. Regression with weather parameters during kharif 2019, were non-significant for Thomisus sp. (0.107), Pardosa sumatrana Thorell (0.146), Oxyopes javanus Thorell (0.190), Tetragnatha javana Thorell (0.213) and Tetragnatha mandibulata Walckenaer (0.347); and during rabi 2019-20, for T. javana (0.516), Argiope anasuja Thorell (0.619) showed significance and O. javanus (0.192), Lycosa bistriata Gravely (0.370), T. mandibulata (0.437), these values were non-significant.

Keywords

Karaikal, Kharif, Rabi, Agroecosystem, Spiders, Biodiversity Indices, Population Dynamics, Correlation, Regression, Dominance, Species Richness, Abundance.

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