Cameroon, United Kingdom
Cameroon, United Kingdom

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Abba P.,University of Yaounde | Djepang S.,University of Yaounde | Laminsi S.,University of Yaounde | Brisset J.-L.,University of Rouen | And 2 more authors.
2014 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2014 | Year: 2014

The treatment of industrial waste waters in many developing countries is very limited or even ignored although noticeable efforts of the authorities. The governments look for new efficient and cheap cleaning technologies and the electric techniques are quite able to fulfil the requirements. A good example is provided by a North-Cameroonian tannery factory. In an exploratory set of experiments, the aqueous effluents are exposed to a gliding arc discharge burning in humid air which favors the formation of Reactive Oxygen and Nitrogen Species (RONS), such as°OH and °NO whose derivatives present strong oxidizing character. The batch treatment of the effluents for 10 min induce abatements of Total Organic Carbon, Biological Oxygen Demand and Bacterial population by 30%, 20% and 3 and 4 logarithm units of Colony Forming Units respectively. © 2014 IEEE.

Eballe A.O.,University of Douala | Koki G.,University of Yaounde | Ellong A.,University of Yaounde | Owono D.,University of Yaounde | And 4 more authors.
Clinical Ophthalmology | Year: 2010

Aim: We performed a prospective, analytical study from 01 January to 31 March 2009 in the Ophthalmology Unit of the Gyneco-Obstetric and Pediatric Hospital of Yaounde, aiming to determine the profile of central corneal thickness (CCT) in the Cameroonian nonglaucomatous black population and its relationship with intraocular pressure (IOP). Results and discussion: Four hundred and eighty-five patients (970 eyes) meeting our inclusion criteria were selected for this study. The average CCT was 529.29 ± 35.9 μm in the right eye (95% confidence interval [CI]: 526.09-532.49), 528.19 ± 35.9 μm in the left eye (95% CI: 524.99-531.40) and 528.74 ± 35.89 μm in both eyes (95% CI: 526.48-531.00), range 440 to 670 μm. The average IOP was 13.01 ± 2.97 mmHg in both eyes (95% CI: 12.82-13.19). A rise in CCT by 100 μm was followed by an increase in IOP of about 2.8 mmHg (95% CI: 2.3-3.6) for both eyes taken together. Linear regression analysis showed that corneal thickness was negatively correlated with age and IOP was positively related with age. Conclusion: CCT in the Cameroonian nonglaucomatous black population was found to be lower compared with CCT values in Caucasian and Asian populations. On the basis of reference values ranging between 527 and 560 μm, an adjustment of IOP values by a correction factor is required for many Cameroonian patients. This will improve the diagnosis and follow-up of glaucoma by helping to detect true ocular hypertension.

Azanzi F.J.,University Of Yaounde | Temate S.,Toulouse 1 University Capitole | Broto L.,Toulouse 1 University Capitole | Hagimont D.,Toulouse 1 University Capitole | Tchuente M.,University Of Yaounde
ACM International Conference Proceeding Series | Year: 2012

An essential component in public administration (health systems management, municipality management, environmental protection, agriculture etc.) is the data collection service. Data collected concerns key information that can improve the living conditions of populations (epidemiological data, environmental data, weather data etc.). This collection is difficult in developing countries or in situations of crisis (notably natural disasters). Current solutions are inadequate, for they assume the availability of client terminals, the presence of outstanding (Internet) communication networks, or they provide a service based on a primitive communication via SMS and data furnishing through mobile phones which are prone to data entry errors. In this paper, we propose a compromise between these approaches. A dedicated language allows the definition of input masks with which are generated (i) HTML forms enabling a reliable entering of data from a computer (ii) in which formats of SMS messages have to be exchanged between the input terminal and the data processing server. The implementation of this approach is based on a Model-Driven Architecture (MDA) technology, and it has been applied to Health Information Systems (HIS). Copyright 2012 ACM.

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