نتایج جستجو برای: chisel plough 25
تعداد نتایج: 355553 فیلتر نتایج به سال:
background: the aim of this study is to develop a new ergonomics chisel based on user centered design approach and to evaluate the effectiveness for reducing awkward posture using catia software for simulation analysis. methods: respondents were selected using purposive sampling – age 18 – 49 years old, men, experience using chisel (>1 month). a set of questionnaire were used to interview worke...
Direct-acting antivirals (DAAs) are either part of the current standard of care or are in advanced clinical development for the treatment of patients chronically infected with hepatitis C virus (HCV) genotype 1, but concern exists with respect to the patients who fail these regimens with emergent drug-resistant variants. In the present study, ultradeep sequencing was performed to analyze resist...
Abstract Chisel plows with a chisel as working body, loosen the soil without mixing layers. The analysis of conducted research concludes that most widespread is cylindrical surface body - constant radius curvature. It theoretically established at curvature bit up to 0.1 m, on will move chaotically, while does not affect percentage wrapped plant debris. As increases, force inertia decreases, the...
The applied methods of applying fertilizers for cotton in Uzbekistan do not fully ensure the supply nutrients to plant's root system. study aims substantiate technological process uniform distribution development zone and parameters coulters. When fertilizer is distributed tiers right ratio, coefficient their use increases, yield increases. research uses laws rules theoretical mechanics, mathem...
This study was conducted to study and compare the effects of different tillage systems on soil physical properties and wheat yield in dryland conditions. The experiment was carried out in Maragheh Dryland Research Station with 5 treatments and 4 replications based on RCBD for 3 years (2001-2003). The results showed that difference between the treatments in terms of wheat yield was significant, ...
The participation of women in agriculture and the role of women in society in the preindustrial period were remarkably different across ethnicities and strongly related to the type of agricultural technology adopted historically. The sexual division of labor was broadly associated to two technological regimes: shifting cultivation, where the majority of agricultural work was done by women, and ...
The article presents research results of a machine-tractor unit that performs two technological operations simultaneously: (i) chopping plant residues (sunflower stubble); (ii) covering the chopped stubble with soil. first operation is carried out front-mounted chopper, and second one rear-mounted plough. chopper’s working devices are rotated by tractor’s front power take-off (PTO), which has o...
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