controlled environment may be adopted for a rapid multiplication of a large number of potato seed tubers. the controlled environment prevents seed tuber degeneration which may occur under field conditions. the objective of this study was to introduce new mini-tuber production system with high multiplication rate and low production cost. to evaluate the performance of culture systems in terms of...

this study was initiated to characterize urban and peri-urban sheep production systems and their economic importance in and around the towns of debre berhan and dessie, ethiopia. the study was undertaken using group discussions, structured questionnaire and personal observations. in both locations the majority of sheep producers were male household heads and predominantly traders in urban and f...

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In this study, solutions for machinery layout with the aim of reducing transportation costs will be discussed. To do this, imperialist competitive algorithm (ICA), which is a very complicated and effective meta-heuristic algorithm is introduced. In the offered algorithm, different kinds of machinery layout are considered in single-row as country and then the best possible layout is developed ba...

background: iodine-123 (123i) is regarded as one of the best radionuclides for in vivo medical studies using single-photon emission computed tomography (spect) due to its suitable physical property. materials and methods: to design a new system in order to replace cryogenically solidified xenon target by the gas one, some necessary calculations are needed to be done such as finding the excitati...

Aeroponic culture is an alternative method for optimizing growth of different plants in controlled conditions. Aeroponic systems are an efficient tool for the root studies and improving medicinal root production. In order to study the feasibility of valerian (Valeriana officinalis L.) production in aeroponic systems and assessing the effects of different NAA concentrations (0, 0.1, 0.3, and 0.5...

in recent years, fashion has been introduced as a prominent taste which is imposed by owners of this industry to the society. recently change of consumption patterns have been increased rapidly, while changes in fashion industry has also changed industries and economies of these countries as well. through changes in global relationships and structures, omitting industrial concentrated productio...