This paper describes the seismic performance of a steel frame with additional LYP dampers. dampers provides passive energy dissipation device in structure, it also reduces lateral forces efficient way which is produced by wave. The structures needed design especially countries where activities occur. analysis accomplished FEM and software called SAP2000. only analyzed using numerical simulation...

The response of net O(2) exchange to light intensity by intact Anacystis nidulans cells in the presence of saturating NaHCO(3) concentrations followed a curve with an inflection near the light-compensation point. Addition of either KNO(3) or NH(4)Cl stimulated O(2) uptake in the dark and at light intensities below the light-compensation point. This resulted in steeper slopes of the curve calcul...

The design of cement slurry for horizontal wellbores is challenging as it must present very high quality cement slurry properties e.g. zero free water, less than 50 cc API fluid loss value, appropriate rheology and yield point for effective displacement, adequate compressive strength, which is critical for lightweight slurries, and finally stable cement column behind casing. The main objective ...

abstract:background and objectives:in arid and semi-arid regions, salinity is a serious and chronic problem for agriculture. due to the improved methods of irrigation and mechanization this methods to increase water use efficiency and enhance the uniformity of water distribution in the field, is very important. main area of farming cotton in iran is about 150000 ha, which in kerman province mos...

Organic agriculture is an ecological production management system aimed at sustainableproduction of safe food, environmental protection and maintenance of soil health. The objectiveof this study was to evaluate, in a period of organic transition, the effects of different organicfertilizers on wheat yield, grain quality and soil characteristics. The research was performedin an experimental farm ...