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Alternate phenotype–genotype selection for developing superior high-yielding irrigated rice lines

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The Crop Journal 2018年第2期6卷 191-201页

作者： Yonnelle Dea Moukoumbi Raafat El-Namaky Koffi Djaman daouda Mbodj Baboucarr Manneh Irrigated Rice Breeding Unit Africa Rice Center(Africa Rice)Sahel Regional StationBP 96 Saint LouisSenegal National Institute of Agricultural Research Gros bouquetPMB 16169LibrevilleGabon Rice Research&Training Center(RRTC) 33717 Sakha Kafr SheikhEgypt

Increase grain yield potential is one of the most important objectives of any cereal crop breeding program. To efficiently develop superior rice lines by the introgression of favorable alleles for yield and yield component traits, a strategy of alternate phenotype–genotype selection was used. The present study aimed to(i) investigate the allelic diversity of loci associated with major yield-component traits and(ii) phenotype and genotype advanced populations derived from crosses between NERICA-L-20 and Giza178 for yield component traits using agro-morphological descriptors and GRi SP polymorphic markers to select superior high-yielding rice lines. A total of 100 F2:3 progeny were selected from 1000 F2 plants and genotyped with 16 polymorphic markers linked to four major yield-component traits. Four promising F2:3 lines(ARS 563–14, ARS 563–62, ARS 563–286, and ARS 563–41)bearing combinations of desirable alleles were selected. A selected set of 20 F2:4 lines showed moderate to high heritability for all target traits. Fourteen F2:5 lines derived from ARS 563–14 and 17 F2:5 from ARS 563–286 families were evaluated in preliminary trials to estimate yield gain. The three top lines, ARS 563–286–16-1-1, ARS 563–286–5-1-1, and ARS563–14–10-1-1, showed an increase of more than 10% grain yield over the best check, Sahel108, which is widely cultivated in the Senegal River valley. The 16 markers linked to the target yield component traits can be used to fast-track breeding programs targeting rice productivity.

关键词： Marker Rice Pedigree selection Yield

Assessment of HRP2-Based RDT in Diagnosing Malaria Cases

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Journal of Life Sciences 2012年第6期6卷 602-607页

作者： Yemou Dieng Doudou sow Therese Dieng Abdourahmane sow Babacar Faye Jean Louis Ndiaye daouda Ndiaye Roger Cl6ment Tine Khadime Sylla Oumar Faye Oumar Ndir Oumar Gaye Department of Parasitology-Mycology Dakar Universite Cheikh Anta Diop Dakar Fann 5005 Senegal Department of Parasitology-Mycology Dakar Centre HospitaIier Universitaire National de Farm Dakar 5035 Senegal

Background： HRP2-based Rapid Diagnostic Tests （RDTs） for malaria ensure a rational use of artemisinin-based combination therapy （ACT）. The HRP2 antigen can go through the cerebrospinal fluid （CSF）. Purpose： To assess the HRP2-based RDT in malaria and detect the HRP2 in CSF. Methods： From November 2006 to May 2007, all patients under 15 years showing clinical symptoms of malaria were included. RDT was performed on the CSF and peripheral blood. Results： Out of the 951 patients included, 131 （13.7%） were confirmed through RDT and 130 （13.6%） through thick blood smear. Sensitivity and specificity stood at 96.96% and 99.71% respectively, for uncomplicated cases and at 100% and 99.13% for severe cases. Tests to detect HRP2 in the CSF of 52 cases were negative. Conclusion： Tests to detect HRP2 in the CSF could make it possible to diagnose severe malaria cases when peripheral parasitemia would be below the detection threshold.

关键词： Malaria rapid diagnostic test paediatrics HRP2 antigen cerebrospinal fluid

Getting the Story Straight

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ChinAfrica 2014年第5期6卷 36-37页

作者： daouda Cissé the Center for Chinese Studies Stellenbosch University

QUESTIONS around China＇s Involvement in Africa arise in almost all spheres of debates or discus-sions in Europe and the United States. be it in the media, academia or other areas. There is hardly any positive coverage of the nature of China-Africa relations across different sectors of engagements： economic cooperation （trade and investment）, development cooperation （devel- opment assistance）, education or labor. Naturally, some challenges exist in all of the continent＇s engagements with the world. Yet, before China＇s growing presence in Africa,

关键词： Getting the Story Straight

Comparative Study of the Thermal Comfort of Four Materials Type Used in the Construction of a Building

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Journal of Energy and Power Engineering 2021年第7期15卷 231-242页

作者： daouda Sawadogo Ousmane Coulibaly Laboratoire de Physique et de Chimie de l'Environnement(LPCE) Department of PhysicsJoseph KI-ZERBO University03 BP 7021 Ouagadougou 03Burkina Faso

This research work consisted in making a comparative study of the thermal comfort of four materials types used in the construction of a building.A simulation of the building with the various materials on the KoZiBu software in reference and optimized situation was carried out.A study on the sensitive and air-conditioning loads as well as the curves of temperatures on a building of type F2 in situation of reference and in optimized situation was made on the one hand and the other hand a study on the same building without air-conditioning in reference and optimized ***,the analysis of the results favorizes the choice of the material having the best thermal *** conclusions of these works show that the material that can give the best comfort and the most economics in terms of energy is the adobe which offers temperatures(301.40K or 28.40°C)and a good indoor thermal environment compared to BLT(blocks of cut laterite),BTC(blocks of compressed earth)and cinder *** built with earthen materials offer a better indoor thermal environment than those built with modern construction materials,which are used more and more in the construction of houses in Burkina Faso.

关键词： Materials thermal comfort modeling air conditioning loads sensitive loads KoZiBu

Study of the Mechanical Properties of 3D-printed Onyx Parts: Investigation on Printing Parameters and Effect of Humidity

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Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers) 2023年第2期2卷 35-42页

作者： daouda Nikiema Pascale Balland Alain Sergent Laboratoire Systemes et Materiaux Pour la Mecatronique(SYMME) Universite Savoie Mont BlancAnnecyF-74000France

Recently,an increasing number of parts have been produced using additive manufacturing *** are no longer simply prototypes but structural parts whose mechanical characteristics must be known before *** of the weaknesses of 3D printing is the significant variability in the dimensions and geometrical and mechanical properties of the printed *** properties depend on specific printing parameters and environmental *** study aims to determine the influence of two printing parameters,namely,the orientation and positioning of the parts on the printing platform and the influence of humidity on the mechanical properties of the *** studied samples were fabricated with onyx using a Markforged X7 *** results showed that onyx could be considered an isotropic material to a certain extent because its mechanical properties do not vary sufficiently according to the orientation angle on the printing platform;a maximum deviation of 10%was observed between the different *** contrast to the orientation,the positioning(flat or XY,on-edge or XZ,and upright or ZX)of the workpieces significantly influenced the mechanical *** on the edge allowed the Young’s modulus to be up to 50% greater than that of flat and upright *** study of the sensitivity to humidity revealed that a specimen absorbs approximately 2%of the humidity and loses up to 65%of its Young’s modulus after 165 days of exposure,significantly influencing the mechanical properties of the *** should be given to this aging of onyx when using printed parts as structural parts.

关键词： 3D printing Onyx Printing parameters Moisture content Mechanical properties

Modeling of Residential Photovoltaic (PV) System Connected to Low Voltage (LV) Network: Application to Public Distribution Network of Burkina Faso

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Journal of Applied Mathematics and Physics 2022年第9期10卷 2698-2707页

作者： Abdoulaye Zongo daouda Konane Frédéric Ouattara Laboratoire de Recherche en énergétique et Météorologie de l’Espace (LAREME) Unités de Formations et de Recherches en Sciences et Technologies (UFR-ST) Université Norbert Zongo Koudougou Burkina Faso Laboratoire de Matériaux et Environnement (LAME) Université Joseph KI-ZERBO Ouagadougou Burkina Faso

Residential photovoltaic (PV) systems connected to the grid are used for self-consumption. Any surplus production is fed into the grid and contributes to improving the voltage. Several techniques are developed to model their connection. However, studies on methods of injecting energy production into the Low Voltage (LV) network are nowadays a problem. This paper proposes a mathematical model to determine the current to be injected and calculate each node’s voltage. The current equation is a recurrence relation with an initial condition. This initial condition is for the case of a single PV system connected to the LV grid. The equation can also be written in matrix form. Similarly, the voltage solution is a recurrence relation. It also has an initial condition for the first node. Both mathematical formulae with the proposed initial conditions are consistent and can be used for the determination of the current and voltage of the different nodes in the grid.

关键词： Residential PV System Low Voltage Grid Node Mathematical Model Electric Current

Study of the Factors Associated with Home Delivery in a Situation of Free Care in Senegal

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Open Journal of Epidemiology 2017年第4期7卷 326-336页

作者： Adama Faye Anta Tal-Dia daouda Faye Instute of Health and Development Cheikh Anta Diop University Dakar Sénégal Dental Public Health Service Cheikh Anta Diop University Dakar Sénégal

Introduction: Home delivery is still a health problem in Kolda (Senegal). The aim of this work is to study the factors associated with the place of delivery in a situation of free care delivery. Method: A descriptive and analytical cross-sectional study was carried out. Sampling was in two-stage clusters. The study focused on women who gave birth in the last 12months. The data were collected during an individual interview at home. The collection focused on knowledge, attitudes and practices about delivery. Logistic regression was used to explore the determinants of childbirth at the level of health facility. Results: The average age was 25.4 ± 6.5 years. Among the interviewed women, education was reported in 35% of the women and 55% of women estimate that the closest health facility is within 5 km to their home. The time to get to the nearest health facility is less than 15 minutes for 39% of the interviewed women. The prevalence of home delivery was 43.5%. Home delivery was related to the remoteness of the health facility (2.43 [1.75 - 3.37]) but also to incomplete antenatal care (2.52 [1.59 - 4.00]). Support groups highlighted difficulties of access to health facilities because of remoteness. Interviews revealed a lack of involvement of husbands in seeking care for women. Cultural barriers are still there. Conclusions: Despite the gratuity of delivery, the remoteness of health structures and socio-cultural factors are still barriers to access to care for pregnant women. These aspects must be taken into account in health policies. Multi-lateral interventions should be implemented to provide solutions for this health problem.

关键词： Home Delivery Free Care Health Facility Senegal

Global Harmonic Rate Assessment in the Electricity Distribution Network in Niamey City:Case Studies of Domestic,Industrial and Hospital Substations

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Energy and Power Engineering 2017年第12期9卷 786-801页

作者： Abdourahimoun daouda Saidou Madougou Abdoul Aziz Ibrahim Laboratoire d’Energétique d’Electroniqued’Electrotechniqued’Automatique et d’Informatique IndustrielleUniversite Abdou MoumouniNiameyNiger Societe Nigérienne d’Electricité(NIGELEC) NiameyNiger

Like others countries of the world, in Niger also, we are witnessing an increasing use of non-linear electric loads in the domestic, hospital and industrial sectors. However, these loads degrade the shape of the electrical signal and cause disastrous effects to the equipment of the distribution system and the devices which are connected to the network. This article highlights the presence of electric harmonics in the distribution network in Niamey city. In order to do this, measurements were taken at the secondary level of the substations using an energy quality analyze r (FLUKE 1735). By using this measuring instrument, we quantified the voltage and current Total Harmonic Distortion (THD) in the three substations. The results obtained show that, although the statutable rates set by the standards are not exceeded for phase conductors, the neutral contains a very critical percentage of distortion on the residential and hospital substations. Moreover, this assessment made it possible to observe the variation of harmonics in the presence of voltage drops.

关键词： Electric Power Distribution Network Harmonic Disturbance Total Harmonic Distortion(THD) Power Quality Distribution Network

Analysis of the Energy and Environmental Sustainability of a Built Space System: The Case of Patte d’Oie University Campus in Ouagadougou

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Energy and Power Engineering 2024年第5期16卷 197-215页

作者： daouda Sawadogo Ousmane Coulibaly Xavier Chesneau Belkacem Zeghmati Laboratoire de Physique et de Chimie de l’ Environnement (LPCE) Department of Physics Universit&#233 Joseph KI-ZERBO Ouagadougou Burkina Faso Multidisciplinary Modeling and Simulation Laboratory (LAMPS) Mechanics and Energetics Group (GME) Universit&#233 Perpignan Via Domitia Perpignan France

The aim of this study was to carry out a dynamic simulation of the energy and environmental performance of a built space system, with a view to assessing its energy and environmental class. The use of a simulation and modeling tool, supported by various methodological references, formed the basis of our approach. Adopting a systemic perspective, we described the structural and functional aspects of the systems making up built spaces, as well as the associated energy flows. Our approach was also based on a typology, taking into account typical days, structural and functional configurations at different scales and angles of observation. The analysis tool we developed in Java was applied to the built space system of the Patte d’Oie university campus in Ouagadougou. Annual electricity consumption was measured at 124387.34 kWh, closely aligned with the average annual electricity bill (125224.31 kWh), with a maximum relative deviation of 1%, followed by a carbon emission balance of 58337.66 kg eq CO2 per year. This validation confirmed the effectiveness of our tool. In addition, following the analysis of electricity consumption using our tool, the university campus was classified in energy class B and environmental class C. These results will be based on the emission factors of the energy mix of the West African Economic and Monetary Union (WAEMU) territory, with particular emphasis on Burkina Faso.

关键词： Energy Function Energy Class Carbon Footprint Built Space Consumption Item Systemic Approach Typological Approach