Effect of cutting edge thickness and state of wear of ploughshare on draught force and heart rates of Sanga oxen in Ghana

Comparative Analysis of Manual and Mechanised Yam Minisett Planting

“…It was observed that the mean heart rate, gross energy consumption, and rest periods could mean that the longer period of rest was needed to compensate for used energy. The association among energy consumption and the rest period were in line with findings by [12]; [10] that, physical work requires more rest periods. Within each column, means followed by the same subscript letter are significantly different at p≤0.05 Heart rate profiles during manual and mechanised yam minisett planting were presented in…”

“…Because mounting of the sensor brings stress, workers were given 20 min to rest after sensor attachment. HR data were set concurrently at a sample rate of 5 s pauses [10]. The same procedure was used for planting.…”

“…The use of HR is an active method of determining exercise oxygen agreement and energy expenditure for work done due to its solid connection with oxygen consumption [8], [9]. As [10] used HR to examine energy expenditure of oxen pulling an implement. An Individual's heart rate can also increase and drop just in response to answer, level of caffeine intake, ambient temperature, and health [11].…”

“…An Individual's heart rate can also increase and drop just in response to answer, level of caffeine intake, ambient temperature, and health [11]. Several accounts on drudgery for physical activities were reported by [12], [10], [8]. The most serious restraint for growing yam production is the pain in planting procedure.…”

The method of hardening soil rippers by surfacing and technical-economic assessment

“…Improved wear resistance yields both direct (worn parts should be replaced rarer) and indirect benefits (parts wear away slower and the nec essary geometrical shapes are retained). The cutting edge sharpness is particularly important in the chisel geometry; when the edge changes from 1 to 6 mm, the vehicle experiences more resistance, and the fuel con sumption may grow by as much as 41% [5,6].…”