November 2017

Estimation of sedimentary thickness using spectral analysis of aeromagnetic data over Abakaliki and Ugep areas of the Lower Benue Trough, Nigeria

Aeromagnetic data over Abakaliki and Ugep areas of the lower Benue Trough were interpreted to determine the depth to magnetic source rocks of the area. The study area covered latitudes 5° 30' and 6° 30'N and longitudes 8° 00' and 8° 30'E with an estimated total area of about 6000 km2. Quantitative interpretation was carried out using spectral analysis method to compute for depth to...

Author(s): Alasi T. K., Ugwu G. Z. and Ugwu C. M.

November 2017

Solar wind plasma associated with Dst < -50 nT during solar cycle 24

This study analyzed the correlative study between the peak intensity of the geomagnetic storm, interplanetary magnetic field (IMF) and the peak value of various plasma parameters during the solar cycle 24. This study has been performed using hourly values of the geomagnetic storm time (Dst) < -50 nT for the period 2008 to 2016. 173 events of disturbance storm time with solar wind velocity ≥ 350 km/s were selected...

Author(s): P. R.Singh, S. Ahmad, B. Nigam, P. K. Chamadia, A. K. Saxena and C. M. Tiwari

November 2017

Evaluation of the impact of partial shading and its transmittance on the performance of crystalline silicon photovoltaic modules

This paper presents on the one hand, an evaluation of the impact of partial shading on the performance parameters of two photovoltaic modules respectively in poly and mono. The current-voltage characteristic (I-V), the short-circuit current (Icc), the open-circuit voltage (Vco) and the maximum power (Pmax) were studied. In this work, the measurements were carried out under the standard conditions (STC) in order to make...

Author(s): Issa Faye, Ababacar Ndiaye, Diouma Kobor, Moustapha Thiame, Cheickh Sene and Lat-Grand Ndiaye