Assam Don Bosco University Journals
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PGPR FOR SUSTAINABLE RICE CULTIVATION
Get PDFAgriculture shares a sizeable allocation of national income and export incentives in several developing countries while ensuring food security and employment. Because of the global population boom, food demand is expected to rise by 3-5 times in the coming years. Rice is staple to more than half of the world’s population. Globally, plant growth and yield are being hampered by various biotic and abiotic stresses. Among abiotic stresses, soil salinity, wastewater and, heavy metal stress are causing serious threats to agriculture. Plant growth promoting rhizobacteria (PGPR) are soil bacteria occurring naturally in the plant root system which aid in their development. Plant growth promoting bacteria (PGPB) have myriad roles based on their long-term stability such as production of secondary metabolites, antagonistic activity and defense mechanisms against heavy metals stress. Hence PGPR help to maintain sustainable plants development and growth. Expansion of agriculture services via an ecologically sound approach is a major challenge in today’s scenario of increasing population. Plant growth promoting bacteria is considered as one of the best plans of action for sustainable agriculture, and an improved mechanism to meet the coupled challenges of global food security and environmental stability. Therefore, in this review we highlight the utilization of plant growth promoting bacteria for the development of a safe biological strategy to obtain sustainable rice productivity
Electrical Characteristics Inspection of Multiple PV Modules for Manufacturing Industry
Get PDFThis paper presents implementation of a real time system for inspection of electrical characteristics of multiple PV modules from certain distance. PV module may have manufacturing defects which affect the I-V characteristics. In this work an experiment is performed in which multiple PV modules are kept in sunlight for inspection of I-V characteristics for a day, their open circuit voltage and short circuit current are monitored from a distant node and displayed on computer screen. The measurements are taken after fixed intervals. Relay connected across PV module is switched ON and OFF to measure short circuit current and open circuit voltage. The measured electrical characteristics are monitored from distant. The characteristics are compared with known standard values and graph is displayed on workstation for examination. The system developed in this experiment offers several advantages like 1) it provides facility to online monitor the characteristics of multiple PV modules and compares it with standard characteristics 2) focus is on automation hence less human intervention is required and 3) facility of inspection of multiple PV modules simultaneously is provided in this work.
DETECTION OF SPATIOTEMPORAL CHANGES IN PALAR - PORUNDALAR DAM, DINDIGUL DISTRICT, TAMIL NADU, INDIA USING GEOMATICS TECHNOLOGIES
Get PDFWater is an essential natural resource which indicates the economic growth of a region along with its various sustainable development plans. However, the rapid development on demographic, economic, and technological trends results in demolishing the favorable environment condition for water availability and results it scarcity. Though, the global warming condition and the anthropogenic activities affects the climatic conditions, the natural water resources and its sustainability need to maintain for future generations. The impacts of global warming, climate change and manmade activities affects water resource availability and its quality. It is mandatory to monitor the water resources in order to manage the resource. So, it is important to detect the surface water bodies and to analyze the Spatio-temporal changes of water bodies. It helps to provide sustainable development plans in water resource management. In the recent researches, remote sensing is one of the cost effective technology which used to detect and analyze the changes of spatial features and also to monitor the natural resources present on the earth surface. The study area chosen for the analysis is the Palar- Porundalar Dam which is the largest water body present in Palani Taluk, Dindigul District, Tamil Nadu, India. The present study, strives to detect the water spread of the Palar-Porundalar Dam for the years 1997, 2009 and 2021 using multi temporal satellite images with the help of Normalized Difference Water Index (NDWI) and to identify the changes over the above said periods. The result indicates that for the year 1997 the surface water spread detected upto 4.84 sqkm, for the year 2009 the surface water spread detected upto 4.81 sqkm and in the year 2021 the surface water spread detected upto 4.88 sqkm. Finally, the validation of the result carried out using accuracy assessment method manually by using kappa coefficient formula. The validation result indicates that there is 85.08% of the match detected among the classified and the reference data. The overall accuracy is 92.59%
Mapping and Change Detection of Water Bodies in the Godavari Delta using Geospatial Technology
Get PDFGeospatial technology has been used to map the water bodies of the Godavari Delta in 2005, 2009, 2014, and 2019. The Normalized Water Difference Index (NDWI) and the Modified Normalized Water Difference Index (MNDWI) have been used to map water bodies in the summer months (April / May). The Godavari Delta has been divided into two regions. One is the upland, and the other is the coastal region. Comparing NDWI and MNDWI with the APSAC assessment of water bodies in 2019 (May) indicated that the MNDWI is close to the APSAC assessment in the Godavari delta. The MNDWI displayed that from the year 2005 to 2019, water bodies have been increased from 0.96% to 3.2% in the upland region and from 11.42% to 20.91% in the coastal region. The improved water bodies are compared with the local precipitation within the delta, and found that there has been no impact of rainfall on the increase of water bodies in the delta. This boom in the water bodies changes due to the construction of artificial drinking water ponds and conversion of paddy fields into aquaculture in the upland and coastal areas regions. Further investigations are required to identify freshwater and saline water bodies in the Godavari Delta
Active and Paleo floodplain mapping of Palam Cauvery using Geospatial Technology
Get PDFThis paper presents precise active floodplain and paleo floodplain mapping of the Palam Cauvery in its deltaic region implementing various Geospatial Techniques, as well as a comparative analysis to comprehend the changes that have occurred to the river course in the past. False Colour Composite (FCC), Normalized Difference Water Index (NDWI), Principal Component Analysis (PCA), Synthetic Aperture Radar (SAR) ALOS PALSAR L- Band and Digital Elevation Model of ALOS PALSAR has been used to carried out the detailed mapping. The active floodplain and paleo flood plains are mapped using the method proposed above and ten separate cross-sectional profiles were obtained along the river course, revealing that the paleo flood plain has an aerial extent that is 86% broader than the present flood plain. This clearly shows that the principal river was formerly running along the Palam Cauvery in this course and has progressively shifted or migrated
Application and Comparison of Optimal LQR Controllers for UPFC with wide range of Operating Conditions in Power System
Get PDFThis paper presents the design of Bryson, Bouderal multistage-based totally Linear Quadratic Regulator (LQR) optimal controllers to the Unified Power Flow Controller (UPFC) for mild, normal heavy loads to cowl huge range of running situations. The proposed controllers are applied and compared for the existing Phillips heffron model with UPFC installed using MATLAB/SIMULINK software
TRADITIONAL USES OF PLANT RESOURCES BY KHASI TRIBES IN NONGKHYLLEM WILDLIFE SANCTUARY, MEGHALAYA, INDIA
Get PDFAn investigation was carried out among the Khasi tribe residing nearby the Nongkhyllem Wildlife Sanctuary, Meghalaya to document the plants and their traditional uses in the area. A total of 90 species belonging to 83 genera and 53 families were recorded from the study area. Out of the documented species 40 were trees, 17 were shrubs, 13 were herbs, 10 were climber, 5 were climber shrub and the rest 1species was climber herb. These documented plants are used for a total of purposes including many diseases like jaundice, Stomach trouble, malarial fever, diarrhoea, dysentery etc. Meghalaya a state in North Eastern Region of India is a rich source of biodiversity which includes high potential of naturally occurring medicinal plants. Due to unscientific and over exploitation, these medicinal plants have become merely extinct and endangered. For that reason, management of these medicinally important plants should be viewed seriously
A Study on the Choice Criteria of Royal Enfield Motorbikes in Ranchi City, Jharkhand
Get PDFThe study was carried out to identify customer preferences towards the Royal Enfield brand of motorcycles in a restricted geographical location, Ranchi city. It studied the needs and wants of the customers and their expectations from the brand. The study also analysed customer preferences and service satisfaction levels of existing customers. The study not only investigated service factors which influence customers purchase decisions, but also identified customer expectations. For this study, 150 customers were selected, and their responses recorded via questionnaires. It was found that most customers choose a Royal Enfield vehicle because of the availability of spare parts, and vehicular features like appearance, design, engine quality etc