As inferred from earthquake engineering literature, considering soil structure interaction (SSI) effects is important in evaluating the response of transmission line towers (TLT) to dynamic loads such as impulse loads. The proposed study investigates SSI on TLT behavior. Linear and non-linear models are studied. In linear model, represented by complex impedances, dependent frequency, determined...

Soil quality and health are terms describing similar concepts, but the latter appeals to farmers and crop consultants as part of a holistic approach to soil management. We regard soil health as the integration and optimization of the physical, biological and chemical aspects of soils for improved productivity in an economic and sustainable manner. This paper describes the process used for the s...

this study was aimed to the examination of the effect of tillage row spacing and bush spacing on the performance and components of phaseou vulgaris var. (line: cos16). the investigation was conducted as cut terraces and in terms of complete random blocks in three replicates at brujerd agricultural research and natural resources in the agricultural year 2009-2010. here, the main terraces with th...

This paper is divided in two sections. The first one gives a procedure for the design of grounding systems, demonstrating the need of considering more complex soil structures, as the two layers soil model, in the design of safety grounding grids. The second section presents a transient model of a buried electrode based on the transmission line approach. The model enables to take into account th...