Cotton production is an important sector in the development of West African countries, particularly Benin. This waste constitutes unused resource and a threat to environment. The aim this work design manufacture defibrator thermopress for valorisation into insulation panels. These two machines have been dimensioned designed using TopSolid, Schemaplic, Matlab RDM6 software. manual enables shredd...

The operating hourly cost of the machine is a suitable factor to analyze the cost fluctuation certain machinery in a changing environment and to find of economically feasible work concepts for the studied machine system. This paper, which is based on studies carried out in northern forests of IR-Iran, analyzed and compared costs of four skidding and excavation machines used in timber harvesting...

background: this study aimed to evaluate the workers safety behavior and to determine the importance of each unsafe behavior in an iranian steel manufacturing company. methods: this study was conducted in mobareke steel manufacturing company, which is located in the middle of iran, in 2007. the methodology was based on the safety behavior sampling (sbs) technique and entropy. after specifying t...

greenhouse gases emissions from burning fossil fuels and the effect of these gases on climate change is one of the most important ecological and political issues. in this study the energy consumption and greenhouse gas emissions from tillage and soybean planting were assessed in gorgan. this study is done on 13 soybean farms in 2012. information related to tillage and planting operations were p...

background: one of the most widely used equipments in harvesting hay and grains are four wheel mowers. the aim of the present study was to determine the levels of noise exposure in drivers and bystanders in different states, speeds and gear of four wheel mowers (bcs model 622).   methods: the iso 5131 and iso 6814 standards were used to assess noise exposure in drivers and bystanders, respectiv...

in this paper a new problem of three stage disassembly-assembly scheduling is introduced and reviewed. this problem, which was arisen from the aviation industry characteristics, is a generalization of the two stage assembly scheduling problem. products (helicopters) in the aviation industry return to assembler for annual overhaul repair services. in the first stage helicopters are disassembled ...