research on the heavy concrete technology expanded rapidly in the last decades. this kind of the concrete can be used for different purposes such as the protective shields of the medical centers and nuclear power plants. ilmenite, limonite, hematite, magnetite and barite are the common mineral aggregates which are used in the heavy concrete construction technology. in this research the mechanic...

A new low cost thin film substrate technology was developed within the EU research project LAP. The project’s substrate cost target of 1 US$/inch shall be obtained by using low cost materials and large area panel processing (LAP). This paper presents tests and measurements showing the process accuracy and the geometric variations resulting from low cost manufacturing. The second part is focusin...

rfid has lots of potential benefits for supply chain management; that`s why it has attracted many industry practitioners all around the world, especially in recent years. rfid is one of the key solutions that information technology has provided for industry. the main issue in implementing and also developing this unique technology in the supply chain management of every industry appears to be t...

Current spirometers on the market often have retail prices of over $1,000. As a result of this high cost, many physicians practicing in developing countries lack the resources to purchase spirometry equipment. The development of a low-cost, reliable spirometer would allow these physicians to make more quantitative assessments of their patients' pulmonary health. A standardized coaching program ...

in this paper the use of farm machinery in sugar beet farms in farsprovince was studied. the necessary data, with two-stage cluster sampling method in fasa, eghlid and darab cities on 2004- 2005 were collected. from 203 farmers selected for the study. 113 of them were in high level mechanization group and 90 of them were in low level mechanization group. in this study, the effect of farm machin...

To meet the need of gas monitoring in mine laneway environment, designed a gas monitoring system based on ZigBee technology, the chip of CC2430 is the core, and this system conquers the defect of wired sensor networks and avoids the high-energy cost of other wireless technology.The hardware design and software design method had been presented, and the result had been given. This system has the ...