abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

Awareness of the available resources and economic potentials of the regions is essential for growth and development. One of the important economic indicators which shows efficient utilization of human and natural resources in a region is the economic growth, production and the value added of the various economic sectors. The purpose of the present study is to achieve the relative advantages of ...

Absorbing investment in urban area is an important factor affecting progress and prosperity of the urban economy. Investment in any province is affected by a set of major factors in the country and specific factors of that province. If it is not invested appropriately in any society, economic growth will be slowed or stopped. During last years, by notifying the policies of Article 44 of the con...

Background : Apples have been known as nutritious and natural medicines. The aim of this study was to determine the amounts of nutrients compounds of golden and red delicious apples produced in Lorestan, Iran. Materials and Methods: Apple cultivars were harvested from different locations throughout Lorestan province in September 2008. The samples were dried at 80 º C for two days. The dry mate...