according to the contradictory reports of researchers, tillers may have positive or negative effect on wheat yield. thus, this study was conducted to investigate the role of tillers on wheat yield under two row spacing of 12.5 and 25 cm and four plant densities of 125, 250, 375 and 500 plants per m2, at gorgan university of agricultural sciences and natural resources farm in anbare-ololum reign...

Research and technology in wireless communication systems such as radar and cellular networks have successfully implemented alternative design approaches that utilize antenna array techniques such as optimum combining, to mitigate the degradation effects of multipath in rapid fading channels. In ad hoc networks, these methods have not yet been exploited primarily due to the complexity inherent ...

In the present study, characterisation and quantitative microanalysis were identified for six expansive soils of which one is natural soil, i.e. black cotton (BC) soil remaining prepared by mixing BC with different percentage bentonite. The samples characterised X-ray diffraction (XRD) scanning electron microscope (SEM). regular or irregular mixed layers justified SEM images. There are superstr...

The required length of vertical ground heat exchangers (GHX) used in ground-coupled heat pump (GCHP) systems is determined so that the outlet temperature from the GHX remains within certain limits for the worst ground load conditions. These conditions may not necessarily occur after 10 or 20 years of operation, as is usually assumed, but often occur during the first year of operation. The prima...

Abstract This study was carried out with a view to establishing routine for the selection of optimum electrode spacing accurate measurement resistivity within unusually thin (5–100 cm) subsurface layer in agro geophysics. The Hummel’s image theory 2-Layer Wenner Vertical Electrical Sounding (VES) formed theoretical basis study. For purpose simulation, computer program developed using theory. si...