in order to evaluate the effect of nitrogen absorption and use efficiency in relay intercropping for winter wheat and maize, a field experiment was conducted during 2008-2009 at the agricultural research station of ferdowsi university of mashhad, iran. a randomized block design with three replications was used. treatments included four combinations of relay intercropping of wheat and maize (thr...

The rapid growth of mobile users and emergence of high data rate multimedia and interactive services have resulted in a shortage of the radio spectrum. Novel solutions are therefore required for future generations of wireless networks to enhance capacity and coverage. This thesis aims at addressing this issue through the design and analysis of signal processing algorithms. In particular various...

Improving the quality of 4H silicon carbide (4H-SiC) epitaxial layers to reduce leakage current 4H-SiC based high-power devices is a long-standing issue in development homoepitaxy. In this work, we compare effect different type dislocations, and discriminate dislocation lines dislocation-related pits on by combining molten-KOH etching tunneling atomic force microscopy (TUNA) measurements. It fo...

Purpose. To study the relation between leakage current and time, then to identify some limits of grid parameters ensure electrical safety as well explosion corresponding all operating modes relay in Vietnam underground mines. Methodology. In coal mines Vietnam, 660 V grids are characterized by ungrounded neutral point electric system. They require very serious strict operation conditions includ...

To overcome the energy-efficiency limitations imposed by finite sub-threshold slope in CMOS transistors, this paper explores the design of integrated circuits based on nanoelectro-mechanical (NEM) relays. A dynamical Verilog-A model of the NEM relay is described and correlated to device measurements. Using this model we explore NEM relay design strategies for digital logic and I/O that can sign...