Selection of materials and manufacturing processes for green engineering

Pollution free environment is now-a-day considered as an important criterion of development for almost every country of the world. Thus, selection of materials and manufacturing processes for a particular product becomes very crucial and must pass through numerous regulations to achieve green atmosphere. In order to achieve this goal, close coordination among the designer, material scientist, manufacturing engineer and environmental expert is needed. Starting from the design to the final product including the recyclability and waste disposal, each and every step must be carefully considered, planned and coordinated before manufacturing starts. This is because; any change in design or material and associated technique during manufacturing becomes more and more expensive as work progresses. Agro-based and industrial nations of the world have started to show their interest on health hazard, recyclability and to generate clean and environment friendly energy. At the same time, emphasis must be given on pollution free green environment so that man-made disaster may not occur

Tribological (wear) properties of aluminum–silicon eutectic base alloy under dry sliding condition

Low expansion, low density and high resistance to corrosion at ambient temperature make the aluminum–silicon alloys very suitable for wear resistance components in the automotive industry. In this study, wear behaviors of both the as-cast and heat-treated Al–Si alloy have been investigated. The cylindrical shaped wear testing specimens were prepared from cast ingot and some of the specimens were then heat-treated according to ASTM standard. Wear experiments on both samples were conducted with a pin-on-disk type wear testing apparatus. The test variables were the rotational speed, input weight, and time/sliding distance. The extent of wear damage was estimated by means of weight loss technique. The full heat-treatment has shown a great influence on the wear properties of the aluminum–silicon piston alloy. In general, the increase in wear with an increase in speed, input load and sliding distance was observed for both as-cast and heat-treated specimens

Published In : Extended Summaries Vol. 3: 4th International Agronomy Congress on “Agronomy for Sustainable Management of Natural Resources, Environment, Energy and Livelihood Security to Achieve Zero Hunger Challenge”, Indian Society of Agronomy held at ICAR-IARI, New Delhi, 22-26 November 2016. pp: 275-276

Sher Singh; Pandey, B.M.; Tuti, M.D.; Bisht, J.K. and and Pattanayak, A. 2016. Weed wiper – A tool for drudgery reduction of hill farmer and resource conservation. In : Extended Summaries Vol. 3: 4th International Agronomy Congress on “Agronomy for Sustainable Management of Natural Resources, Environment, Energy and Livelihood Security to Achieve Zero Hunger Challenge”, Indian Society of Agronomy held at ICAR-IARI, New Delhi, 22-26 November 2016. pp: 275-276Not AvailableNot Availabl

Energy-use efficiency and economic analysis of vegetable cropping sequences under greenhouse condition

Not AvailableUnder off-seasonality, high-value vegetable cultivation in the greenhouse is more profitable and gaining more acceptances day by day. This study aims to analyze the energy requirement and energy input–output relationship with the economics of vegetable-based cropping sequences viz., tomato nursery–tomato–pepper–onion nursery (CS1), tomato nursery–pepper–soil treatment–cucumber (CS2), tomato nursery–tomato–soil treatment–cucumber (CS3), tomato nursery–cucumber–soil treatment–pepper (CS4), and tomato nursery–tomato–soil treatment–pepper (CS5) in greenhouse conditions of Indian sub-Himalayas. The five sequential treatments were statistically analyzed in randomized block design with four replications. Results reveal that cucumber production required highest input energy (1,059.9 MJ/100 m2) than tomato or pepper. The highest input (3,477.4 MJ/100 m2) and output (4,787.5 MJ/100 m2) energy was observed with CS3. Crop protection (28.9–55.7 %), manures and chemical fertilizers (17.5–33.1 %), and plant stacking, training and pruning (16.3–21.9 %) consumed the bulk of the energy for all cropping sequences. The CS3 with the highest tomato equivalent yield produced the highest net energy (1,310.1 MJ/100 m2), energy productivity (0.63 MJ/100 m2), energy intensiveness (0.297 MJ/100 m2), and benefit/cost ratio (1.82). Energy consumption in the form of indirect (70.6–80.2 %) and non-renewable (83.9–85.7 %) energy was higher than direct and renewable energy, respectively. Considering these, CS3 (tomato nursery–tomato–soil treatment–cucumber) cropping sequence will be a more suitable option for greenhouse cultivation.HMNEH-MM

Not Available

Not AvailableUnder off-seasonality, high-value vegetable cultivation in the greenhouse is more profitable and gaining more acceptances day by day. This study aims to analyze the energy requirement and energy input– output relationship with the economics of vegetablebased cropping sequences viz., tomato nursery–tomato– pepper–onion nursery (CS1), tomato nursery–pepper– soil treatment–cucumber (CS2), tomato nursery– tomato–soil treatment–cucumber (CS3), tomato nursery– cucumber–soil treatment–pepper (CS4), and tomato nursery–tomato–soil treatment–pepper (CS5) in greenhouse conditions of Indian sub-Himalayas. The five sequential treatments were statistically analyzed in randomized block design with four replications. Results reveal that cucumber production required highest input energy (1,059.9 MJ/100 m2) than tomato or pepper. The highest input (3,477.4 MJ/100 m2) and output (4,787.5 MJ/100 m2) energy was observed with CS3. Crop protection (28.9–55.7 %), manures and chemical fertilizers (17.5–33.1 %), and plant stacking, training and pruning (16.3–21.9 %) consumed the bulk of the energy for all cropping sequences. The CS3 with the highest tomato equivalent yield produced the highest net energy (1,310.1 MJ/100 m2), energy productivity (0.63 MJ/100 m2), energy intensiveness (0.297 MJ/ 100 m2), and benefit/cost ratio (1.82). Energy consumption in the form of indirect (70.6–80.2 %) and nonrenewable (83.9–85.7 %) energy was higher than direct and renewable energy, respectively. Considering these, CS3 (tomato nursery–tomato–soil treatment–cucumber) cropping sequence will be a more suitable option for greenhouse cultivation.Not Availabl

Published In : Proceedings: National Agronomy Congress on “Redesigning Agronomy for Nature Conservation and Economic Empowerment”, Pantnagar Agronomy Society held at GBPUA&T, Pantnagar, 20-22 February 2018. pp: 570-572.

Sher Singh; Mahanta, D.; Tuti, M.D.; Panday, S.C.; Mondal, T.; Yadav, R.P.; Meena, V.S. and Choudhary, M. 2018. Enhancing productivity and profitability of rainfed wheat with thiourea and dew harvesting in North-western Himalayas. In : Proceedings: National Agronomy Congress on “Redesigning Agronomy for Nature Conservation and Economic Empowerment”, Pantnagar Agronomy Society held at GBPUA&T, Pantnagar, 20-22 February 2018. pp: 570-572.Not AvailableNot Availabl

Design, synthesis, and antioxidant evaluation of monocarbonyl curcumin analogues tethered 1,2,3-triazole scaffold

Half- and full-skeletal of curcumin analogues containing mono- and bis-triazole scaffold have been successfully synthesized from simple aromatic aldehydes. The route is including aldol condensation, propargylation, and then continued with azide-alkyne [3 + 2] cycloaddition to afford the triazoled curcumin analogues 3a-3e. The structures of the synthesized compounds have been established on the basis of FTIR, 1H and 13C NMR, and HRMS. The antioxidant activity of all final compounds has been screened. All compounds were found to be moderate against DPPH radical, and 3b was denoted as the most active product with inhibition of 32.04 ± 0.30% at 100 ppm