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The paper presents applicability of the computer system to model and simulate fluid and gas flow to assess surface cavitation wear. Abstract tube models with a decreasing inside diameter were developed and fluid flow with varying flow velocities was simulated. This facilitated identification of areas particularly at risk of cavitation wear. Results of simulation analyses were verified by comparing...
In 2017 650 questionnaires were sent online to respondents in the Independent Farmers’ Opinion Poll (IFOP) system. The survey provided valuable data for analyses of the safety and ergonomics of tractors used on Polish farms. It showed farmers’ subjective preferences with a few parameters determining the overall evaluation of tractors’ quality. John Deere tractors were found to be the safest and most...
Analysis of consequences after changes in the system of maintenance and milking on a family farm has been carried out. In a conventional cowshed a herd of 30 cows was tethered, with littered cubicles and a pipeline milking system. In December 2014 the herd was taken to a modern, newly built shed. This shed was designed so as to use a free stall cow maintenance system and was equipped with 85 stands...