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Engineering and Technology in India
Publisher:Rakesh Kumar Singh
Editor in chief:Dr. R. D. Singh
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Comparative Study Of Gross Tonnage Of Wooden Purse Seiners Of Ratnagiri, Maharashtra
Author:Siddhesh S. Desai, Makarand T. Sharangdhar And Ashish S. Mohite
Volume: 7 | Issue no: 2-2016 | Pagination: 84-86
For the wooden purse seiners having capacity ranging from 25 to 50 tons, the overall length ranged from 11.58 to 19.1 m, breadth at midship 2.28 to 7.90 m, depth of vessel 1.52 to 2.95 m, length of freeboard 0.6258 to1.2147 m, draught 0.8941 to 1.5705 m, length of keel 8.81 to14.28 m and horse power of engine between 94 to 198 hp. Whereas, for wooden purse seiners having capacity ranging from 50 to 100 tons, overall length ranged from 11.39 to 17.9 m, breadth at midship 3.4 to7.90 m, depth of vessel 1.58 to 3.4 m, length of freeboard 0.6505 to 1.4 m, draught 0.9294 to 1.5882 m, length of keel 8.16 to 13.68 m and horse power of engine between 99.24 to 151 hp. All wooden purse seiners were fitted with Ashok Leyland make six cylinder inboard diesel engines.
Effect Of Wbgt On Physiological Cost Of Operation For Agricultural Workers In Southern Rajasthan
Author:S. K. Singh, A. K. Mehta And S. S. Meena
Volume: 7 | Issue no: 2-2016 | Pagination: 78-83
Heat stress is a condition that is caused by worker over-exposure to the high temperature work environments often found in outdoor agriculture operations. Wet bulb globe temperature (WBGT) is a measure of heat stress especially when it is above 27 °C. Considering the range of temperatures prevalent in the Rajasthan state of India during the months of May and June, agricultural operations during these months and the associated heat stress on the agricultural workers, this study was designed to ascertain the effect of WBGT on physiological cost of operation for agricultural workers. Southern Rajasthan was selected to conduct this study. Different WBGT of 28°C, 29°C, 30°C, 31°C and 32°C were selected for this study. The study conducted on twelve farm workers reveals that WBGT induces heat stress on the bodies of workers. The resting, working and delta heart rates and resting and working oxygen consumption rates of workers increased with increase of WBGT from 28 ºC to 32 ºC. The resting hear rate, working heart rate and HR was found increasing linearly with wet Bulb globe temperature with higher correlation. Resting and working OCR were also having increasing linear relationship with wet bulb globe temperature.
Design And Technical Aspects Of Bottom Fish Trawl (64 M) Of Ratnagiri, Maharashtra
Author:Nilesh N. Sawant, Ashish S. Mohite And Makarand T. Sharangdhar
Volume: 7 | Issue no: 2-2016 | Pagination: 73-77
The present study deals with the design and technical aspects of bottom fish trawl (64 m) locally know as 32 Angali disco dol, operated along the Ratnagiri coast of Maharashtra. The material used for the fish trawl is HDPE (High density polyethylene) and the knot type used for construction is a single trawl knot. Blue colour multifilament netting twine was normally used, having twine diameter of 1.25 mm for construction of netting of wing and square section while 1.00 mm twine was used for the belly, lengthener and cod end section. The mesh size of the wing and square section was 600 mm and gradually reduced down to the cod end section (18 mm). The net was specifically used to catch Ribbonfish, Squid, Croaker, Pomfret etc.
Bobbing And Hand Line Fishing Methods Of Ratnagiri, Maharashtra
Author:Mayuri U. Dongare, Ashish S. Mohite, Makarand T. Sharangdhar And Shrikant T. Sharangdhar
Volume: 7 | Issue no: 2-2016 | Pagination: 65-72
The present study encompasses some line fishing methods practiced in Ratnagiri, Maharashtra. The bobbing line locally known as Sarsara was operated at a depth ranging from 10 to 18 m to catch Scad fish (Kokeri). Its main line was made up of PA monofilament twine of length varying from 6 to 12 m and diameter ranging from 0.16 to 0.25 mm. Bob was made up of 15 to 30 cm PA monofilament of same specification as that of the line. Hand line consisting of a line and bait with hook was operated at a water depth of 4.5 to 12 m and was made up of PA monofilament twine having a twine diameter varying from 0.23 to 1 mm of length ranging from 5 to 16 m. Barbed ?J? shaped steel hooks of 7 to 13 number were normally used.
Green Revolution- Phytoremediation Of Heavy Metals From Industrial Effluent By Water Hyacinth
Author:D. Pamila, A. Sivalingam And M. Thirumarimurugan
Volume: 7 | Issue no: 1-2016 | Pagination: 56-64
Heavy metals (Pb, Hg, As, Cd, Cr) present in many industrial effluents are non-biodegradable which affect the food chain and are hazardous to all living beings. Phytoremediation is a green revolution, innovative, economic, environmental friendly using metal accumulating plants to remove heavy metals. Water and plant factors such as physio-chemical characteristics, metal bioavailability, plant?s ability to uptake, accumulate, translocate and detoxify metal amounts for phytoremediation efficiency. Eichhornia Crassipies, Limnobium Laevigatum are aquatic floating macrophytic plants occurring in meso and eutropic water reservoirs have natural ability of hyperaccumulator or by inducing chelating agents, phytoremediation can be achieved. The accumulation potential in aquatic plants is calculated by bioconcentration and translocation factor.
Inboard Diesel Engine Fitted With Gill Netters Operating Along Ratnagiri Coast
Author:S.L. Bhandkoli, R.K. Sadawarte And A.S. Mohite
Volume: 7 | Issue no: 1-2016 | Pagination: 53- 55
Mirkarwada is one of the important mechanized fish landing center of Ratnagiri. It is well constructed major fishing harbour, which provides a birthing and fish landing facilities for all kinds of vessels, since 1988-89. Wooden gill netters (4), FRP gill netters (6) fitted with marine diesel engine were operated from Mirkarwada, Ratnagiri. Kirloskar W/C model diesel engines (90%) and of Ashok Leyland AL-370 model diesel engine (10%) were fitted on the gill netters. Overall length (OAL) of gill netters ranged from 28.30 to 38.62 ft, breadth 7.15 to 10.15 ft, depth 2.83 to 5.32 ft, gross tonnage 4.14 to 9.54 tonnes, net tonnage 3.6 to 8.29 tonnes, horse power 10 to 99.27 hp, RPM 500 to 1500 rpm, fuel consumption litres per hour 7 to 12 l/hr, propeller diameter 15 to 29.9 inch and propeller pitch 10 to 19.6 inch.
Performance Evaluation Of Manual Operated Single Row Weeder For Groundnut Crop
Author:Ram Bhavin, M.S. Khardiwar, Shailendra Kumar And B.P. Solanki
Volume: 7 | Issue no: 1-2016 | Pagination: 45-52
An experiment was conducted to evaluate the field performance of developed manual operated weeder was carried out at Department of Farm Machinery and Power of College of Agricultural Engineering and Technology, Junagndh. Various parameters such as field capacity, weeding efficiency, draft requirement and performance index of the weeder were considered during the test. The developed weeder can work up to 4.0 cm depth of operation with field capacity of 0.0285 ha/h. highest weeding efficiency was obtained (i.e. up to 80.42%). draft requirement was 34.4 kg for 20 cm width of the weeder and the performance index of the developed weeder was obtained 1210.53 .
Utilization Of Argemone Oil Biodiesel In Commercial Idici Engine
Author:Ashish Sagar, Nirpakash Uppal And Baljinder Singh
Volume: 7 | Issue no: 1-2016 | Pagination: 33-44
In this study the performance and emission characteristics of diesel engine fueled with diesel/Argemone biodiesel blends has been evaluated. An experiment was conducted on an indirect injection (IDI) compression ignition (CI) engine using diesel and diesel/Argemone biodiesel blends. The result shows that with an increase in Argemone biodiesel blend ratio (up to B30) the performance characteristics such as brake thermal efficiency, brake specific fuel consumption, indicated thermal efficiency, indicated mean effective pressure improved and resulted in significant reductions in CO and HC emissions. However, an increase in CO2 and NOx emissions was observed for all biodiesel blends. The maximum value of brake thermal efficiency of 33.57 per cent was obtained for B30 at full load @2500 rpm. The blends showed deterioration in brake thermal efficiency and brake specific fuel consumption at partial loads and high rpm conditions. The comprehensive analysis of experimental results shows substantial improvement in engine emissions and performance characteristics by the utilization of 30 per cent AOME and without carrying out any engine modification.
Physiological And Subjective Evaluation Of Tractor Operator Workplace
Volume: 7 | Issue no: 1-2016 | Pagination: 26- 32
Tractors are the major source of farm power. Tractor driving imposes a lot of physical and mental stress upon the operator. This study was aimed at evaluating the physiological and subjective response of tractor operators while driving a tractor. Five tractor models and three male tractor operators were randomly selected for the study. The physiological evaluation was carried out in terms of heart rate and data were analyzed on the basis of two Factor Completely Randomized Design. The results showed that the effect of tractors on the heart beat was significant but the effect of subjects was found to be nonsignificant. The energy expenditure rate was ranged from 6.34 to 10.94 kJmin-1; indicating that in some tractors, operation requires a lot of physical effort. Rated Perceive Exertion scores were also in match with the physiological evaluation. The results call upon the manufactures to ergonomically design the tractor workplace to make it more comfortable for the operator.
Performance Evaluation Of Power Chaff Cutter
Author:U.S. Kankal, D.S. Karale, V. P. Khambalkar And S.H. Thakare
Volume: 7 | Issue no: 1-2016 | Pagination: 18- 25
The ever increasing energy demand, unemployment in developing countries like India, Increased awareness of people towards the health are some of the driving forces for the development of powered machines. The experimentation has been carried out on a fodder cutter energized by electrical power. Fodder-cutter machines are used every day by farmers and their families in India for preparation of fodder for the livestock they own. This paper discus about the procedure of the testing of fodder cutter machine.
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