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Even though ca 1746 people and over 3000 cattle were killed in 1986 by sudden release of about 800 million m3 of CO2 from Lake Nyos volcano in northwest Cameroon, the lake's formation history is not known. Here we report results of a lithostratigraphic and petrogenetic study of Nyos volcano that allows us to confirm its phreatomagmatic (maar) origin. Eruptive products are divided into 2 units, the phases of each of which are closely related in time. Unit A comprises 4 phases, the last (A-4)...

While Science teaching and learning is changing at an amazing pace in developed countries, same cannot be said of developing countries. Nigeria secondary school classrooms have remained ‘chalk and board’ affair with students seated in rows copying notes. In a developing country such as Nigeria, teachers need sustained support from colleagues at tertiary level who are compliant with the new technologies to help them learn how best to integrate technology into their teaching. In this paper, we...

The impact of chronic low back pain (CLBP) is disproportionally higher in rural Nigeria than in urban areas but lack access to rehabilitation. While exercise and education are commonly advocated interventions for the rehabilitation of CLBP, there is a paucity of community-based randomized clinical trials assessing their benefits among adults with CLBP in rural Nigeria. The purpose of this study is to investigate the effects of motor control exercise (MCE) and patient education (PE) in the...

The use of electronic resources in academic research remains low in many developing countries for various reasons, including inadequate funding [1]. Access to these resources are often limited by high prices, resulting in a wide range of scholarly research not reaching its full potential to impact on people's lives. The Open Access (OA) movement developed in response to such conditions, advocating worldwide unrestricted access to scholarly publications [2]. OA resources are thus a major...

We evaluate the long-term effects of a "girl-friendly" primary school program in Burkina Faso, using a regression discontinuity design.Ten years later, primary school-age children in villages selected for the program attend school more often and score significantly higher on standardized tests.We also find long-term effects on academic and social outcomes for children exposed earlier in the program.Secondary-school-age youths and young adults (those old enough to have finished secondary...

We evaluate the long-term effects of a “girl-friendly” primary school program in Burkina Faso, using a regression discontinuity design. Ten years later, primary school-age children in villages selected for the program attend school more often and score significantly higher on standardized tests. We also find long-term effects on academic and social outcomes for children exposed earlier in the program. Secondary-school–age youths and young adults (those old enough to have finished secondary...

The breakup of Africa from South America is associated with the emplacement of the Paraná-Etendeka flood basalt province from around 134 Ma and the Tristan da Cunha plume. Yet many additional volcanic events occur that are younger than the main pulse of the Paraná-Etendeka and straddle the rift to drift phases of the main breakup. This contribution reports on new geochronological constraints from the Angolan part of the African Margin. Three coastal and one inland section have been sampled...

A Thesis Submitted to the School Of Education in Partial Fulfillment of the Requirements for the Award of the Degree of Master, Kenyatta University. June, 2019

This paper is an outcome of a study that was conducted to find out the extent to which communication between parents and teachers influence pupils' academic performance in public primary schools in Ainabkoi Sub County, Kenya.Communication as portrayed in this paper can take the form of conferences/ meeting, telephoning writing notes, and face to face dialogue between parents and teachers.Founded on the theory of six types of parental involvement by Joyce Epstein's, the study adopted ex-post...

This paper is an outcome of a study that was conducted to find out the extent to which communication between parents and teachers influence pupils' academic performance in public primary schools in Ainabkoi Sub County, Kenya.Communication as portrayed in this paper can take the form of conferences/ meeting, telephoning writing notes, and face to face dialogue between parents and teachers.Founded on the theory of six types of parental involvement by Joyce Epstein's, the study adopted ex-post...

The World Federation of Neurosurgical Societies (WFNS) Rabat Training Center was established in 2002 following the efforts of Dr. Abdeslam El Khamlichi. This institution has paved the way to guide tremendous change and to improve neurosurgery training in Africa, especially Sub-Saharan Africa (SSA). The center has enabled so far the training of more than 58 neurosurgical candidates, from approximately 18 countries in SSA, including 30 neurosurgeons who are already back in their respective...

People from low- and middle-income countries are disproportionately affected by the global burden of adverse health effects caused by ambient air pollution (AAP). However, data from Sub-Saharan Africa (SSA) are still scarce. We systematically reviewed the literature to describe the existing knowledge on AAP and health outcomes in SSA.We searched PubMed, Medline-OVID, EMBASE and Scopus databases to identify studies of AAP and health outcomes published up to November 15, 2017. We used a...

We evaluate the long-term effect of a "girl-friendly" primary school program in Burkina Faso, using a regression discontinuity design.The intervention consisted of upgrading existing threeclassroom schools to six-classroom schools to accommodate more grades.After seven years, the program increased enrollment by 15.5 percentage points and increased test scores by 0.29 standard deviations.Students in treatment schools progress further through the grades, compared to students in non-selected...

Egypt is one of the countries suffering from water poverty, so researches must be increased about groundwater as a clean source of water. Aquifer vulnerability has assessed using the DRASTIC method, based on a Geographic Information System (GIS) to evaluate the relative importance of the model parameters for aquifer vulnerability in middle Delta Gharbiya Governorate (Egypt). An additional objective is to demonstrate the combined use of the DRASTIC with GIS system as an effective method for...

Recently the Republic of Rwanda has expanded the national TVET system in response to the country’s growing need for a skilled youth population. However, policymakers have generally overlooked that the quality of the TVET system as a whole largely depends on the quality of TVET trainers. Recognising this lack, we conducted a national survey on TVET trainer’s instructional competencies to gather information about the current status of TVET trainers’ teaching quality. Additionally, after...