November 2021

Use of effective microorganisms to enhance cost-effective biogas purification at the household level

This study investigated the use of effective microorganisms (EM) to enhance cost-effective biogas purification at household-level application. It involved experimental setups for biogas purification in two different runs: 4 L activated EM and 1 L dormant EM by bubbling biogas through EM purification units. Biogas composition was analyzed using an industry-standard biogas analyzer. The results indicated that EM has the...

Author(s): Selele Minza, Mgana M. Shaaban and Mbuligwe E. Stephen

November 2021

Analysis of the deposit conditions of sedimentary series of fluvio-lacustrine and aeolian origin in the Djourab desert, in Northern Chad

The detailed sedimentary study of the deposit sequences of the ancient hominid sector (SahelanthropustchadensisalisToumaï) of Toros-Menalla, presented here addresses new aspects of the sedimentary geology of the Chad Basin through an original field study of Moi-sediments: Pliocene of the northern basin of CHAD. This is an original contribution that sheds light on new knowledge of sedimentary series of...

Author(s): MOUSSA Abderamane, MAHAMAT NOUR Abdallah, ABDERAMANE Hamit, MACKAYE H. Taisso, LIKIUS Andossa, SCHUSTER Mathieu, DURINGER Philippe, GHIENNE Jean-François and VIGNAUD Patrick

November 2021

Improving future temperature projections with bias correction methods in Lake of Guiers/Senegal

Climate models are generally used to evaluate the climate change impacts. However, they have important biases at the regional or local scales. This study evaluates the future temperature projections in Lake of Guiers/Senegal. For this, the daily maximum and minimum temperature from the ensemble mean of five (5) Coordinated Regional climate Downscaling Experiment (CORDEX) regional climate models (RCMs) under the...

Author(s): Alioune Badara Sarr,

November 2021

Spatio-temporal dynamics of land use on the expansion of coffee agroforestry systems in Cameroon’s production basins

Diachronic analysis of satellite images was used to assess the spatiotemporal dynamics of land use and land cover change in the coffee production basins of Cameroon, located in the forest agro-ecological zones (Moungo and Haut-Nyong) and the highland humid savannah (Noun). A survey of farmers was carried out to identify land use and changes in the area of coffee agroforests over time. While the period 1980 to 2001 was...

Author(s): Marcien Kuete Fogang, Marie Louise Avana Tientcheu, Christopher Tankou and Eunice Ndo