this paper considers the potential problems that may militate against the adoption of organic poultry production in nigeria. factors identified include: higher risk of diseases like coccidiosis and newcastle disease, disease prevention and control / herd health management, disease containment in times of outbreak, land acquisition (land tenure system), market economies / cost-benefit ratio, pas...

there is much discussion going on lately whether dam construction is economic or not in termsof social consequences. accordingly, various techniques and software have been released to estimate the real social cost of dam construction among which, the software simpacts has been used extensively by researchers, worldwide. the present version of simpacts software only focuses on adverse effects of...

there is much discussion going on lately whether dam construction is economic or not in termsof social consequences. accordingly, various techniques and software have been released to estimate the real social cost of dam construction among which, the software simpacts has been used extensively by researchers, worldwide. the present version of simpacts software only focuses on adverse effects of...

This paper presents an economic evaluation of gas to liquids (GTL) project using “South-Pars” gas field of Iran based on the latest actual performing GTL projects. Iran has the world’s largest reserves of natural gas and can satisfy the projected long-term market demand of GTL products which have lower pollution and higher quality than refinery products. The results of cost-benefit analysis sho...

The techniques and methods of developing cost models for respirators are discussed. Models are developed and implemented in this study for nineteen types of respirators in two major classes (air-purifying and supplied-air) and one LEV system. One respirator model is selected for detailed discussion from among the twenty models. The technical cost method is used in constructing the cost models f...

BACKGROUND In Niigata prefecture, Japan, a system has been developed based on a school-based fluoride mouth rinse program as follows; students with caries susceptible teeth are screened in a school dental examination, and encouraged to receive sealant placement in local dental clinics. However, the cost-effectiveness of sealant application in the public health has been questioned. The aim of th...