Browsing College of Biological and Physical Sciences (CBPS) by Title

Now showing items 25-29 of 29

    • A Simplified Method for Parameter Determination of a Photovoltaic Module using Manufacturer’s data 

      Ndegwa, Robinson; Ayieta, Elijah; Simiyu, Justus; Odero, Nicodemus (University of Nairobi, 2020)
      Accurate and fast modelling and simulation of Photovoltaic module requires careful determination and identification of the unknown parameters required in fitting the voltage-current and power-voltage curves to replicate ...

    • A Simplified Simulation Procedure and Analysis of a Photovoltaic Solar System Using a Single Diode Model 

      Ndegwa, Robinson; Ayieta, Elijah; Simiyu, Justus; Odero, Nicodemus (University of Nairobi, 2020)
      A single diode model for a photovoltaic solar module is the most ideal and quick way of analyzing the module characteristics before implementing them in a solar plant. Solar modules manufacturers provide information for ...

    • Surface Photovoltage Study of Surface Defects on Co-Doped TiO2 Thin Films Deposited by Spray Pyrolysis 

      Wafula, Henry; Juma, Albert; Sakwa, Thomas; Musembi, Robinson; Simiyu, Justus (University of Nairobi, 2016)
      Surface photovoltage (SPV) spectroscopy is a powerful tool for studying electronic defects on semiconductor surfaces, at interfaces, and in bulk for a wide range of materials. Undoped and Cobalt-doped TiO2 (CTO) thin ...

    • Water and the UN sustainable development goals 

      Campos, Luiza C; Olago, Daniel; Osborn, Dan (University of Nairobi, 2022)
      Water is essential for life, but we need to balance human needs with those of the environment on which we depend for our wellbeing, our health and much of our wealth. Not all of us are lucky enough to have access to ...

    • Water quality issues in East Africa 

      O, Wandiga; O, Madadi (Department of Chemistry, University of Nairobi, 2009)
      The paper shows that in the analysis of a queuing system with fixed-size batch arrivals, there emerges a set of polynomials which are a generalization of Chebyshev polynomialsof the second kind. The paper uses these ...