Background: Assessment of activity concentrations of 238U, 232Th, 40K and gamma dose rate (DR) was carried out over a laterite mining field in Ilorin-south, Nigeria. Materials and Methods: A well calibrated Super-Spec (RS-125) gamma spectrometer was used to measure the activity concentrations of 40K, 238U, 232Th and gamma doses rate at 1 m above the ground level over the laterite mining field. ...

Vaulted structure has been in use for nearly 4000 years and believed to have been studied by scientists and builders for nearly 2000 years. There are few publications about the geometry and constructional aspects of arches and vaults before Renaissance age. One of the most interesting works on this subject belongs to Jamshid Kashani known as a mathematician. Ghiayth Al-Din Kashani, has made so...

the administrative system is a means of achieving the goals of political, economic, social and cultural systems of any society. it seems the nature and content of administrative management system affected by the construction and nature of governing system in every society. thus, there is a proactive relationship between these systems. therefore competency-based administrative system is equivale...

Development which is less attention to the environment, inefficient use of energy as well as the increasingly dense city make space for the concept of green building to grow even more in Indonesia . The purpose of this study was to determine the extent to which the implementation of green building principles in commercial buildings. There are three buildings complexes that were examined in this...

Waste minimization and recycling are principles of the concept of sustainable development that is now globally introduced. Construction in the sense of manufacturing goods and construction and exploitation of buildings generates a significant amount of waste. Therefore, the developing of the concept of waste management and the reverse logistics is implemented to the construction industry. A sta...