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Geomaterials 2023年第3期13卷 51-60页

作者： Mohamadou Moustapha Thiam Adama Dione Moumar Dieye Diakher Hélène Madioune diodio diouf Ecole Nationale Supérieure des Mines et de la Géologie Cheikh Anta Diop University Dakar Senegal Département de Géologie Cheikh Anta Diop University Dakar Senegal

Limestones of different facies in the Senegal basin are most commonly used as aggregates, regardless of their petrographic properties. These differences may influence their behaviour. The aim of this paper is to study the stratigraphy and characterise the limestones of the Bandia and Popenguine quarries. Sampling and geochemical and geotechnical characterisation were carried out on these limestones. The results show the presence of several very different facies in the Paleocene formation. The geochemical study shows that the Bandia limestones (Bd2) have the highest CaCO3 percentages (98.54%) and the highest SiO2 percentages were recorded in the Popenguine limestones (Pop2). The study also gives MDE values of 22.38 and LA of 22, which are acceptable for use in road construction. It is important to carry out a complete study in order to select the right materials for optimal use.

关键词： Stratigraphy Paleocene Geochemical Limestone Bandia Popenguine

Evaluation of the Influence of Plastic Waste in Improving the Mechanical Characteristics of Asphalt Mixes (Senegal, West Africa)

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Open Journal of Civil Engineering 2023年第3期13卷 517-527页

作者： Adama Dione Papa Sanou Faye Mohamadou Moustapha Thiam Birame diouf Cheikh Diallo Achim Becker diodio diouf Moussa Sow Malick Thiam Marème Ba National Hight School of Mining and Geology ex IST UCAD Dakar Senégal Science and Technology Department Iba Der Thiam University Thiès Senegal UFR Engineering Sciences Iba Der Thiam University of Thies Thies Senegal Speciesanalytik Laboratory Dakar Senegal Aventurin Waste ONG Bochum Germany Department of Geology UCAD Dakar Senegal Ecole Supérieure Polytechnique UCAD Dakar Senegal

The recovery of plastic waste has a positive impact on two fronts: The environment, through waste reduction, and the economy, through its use in road construction. This work involves recycling plastic variants such as Polypropylene (PP) 50% and LDPE (Low Density Polyethylene) 50% in proportions of 2% to 8%, incorporated into a 0/14 BBSG. The results of the Marshall test gave stability values ranging from 826 to 1523 kg and creep values from 5.5 to 2.45 mm. The Duriez test gave r/R values ranging from 0.769 to 0.786, with water absorption percentages from 2.24% to 0.69%. The PCG test at 80 gyrations gave void percentages ranging from 11.9% to 5.23%. The rutting test gives a rutting depth percentage that drops at 30,000 cycles from 11.5% to 1.3%. This study shows a considerable increase in the mechanical characteristics of asphalt mixes by adding plastic waste.

关键词： Plastic Waste Marshall Environmental Impact BBSG Recycling

Rhizobium-Based Biofertilizer for Rational Use of Mineral Nitrogen Fertilizers: Case Study of Common Bean Cultivation in Senegal

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American Journal of Plant Sciences 2025年第1期16卷 133-145页

作者： Adama diouf Facult des Sciences et Techniques Dpartement de Biologie Vgtale Universit Cheikh Anta Diop (UCAD) Dakar Sngal

Synthetic fertilizers are widely used to address the urgent challenge of ensuring food supplies for a growing world population in the context of climate change. However, their industrial production and use in agriculture have a negative impact on the environment and consequently on human health. While chemical fertilizers may not have to be abandoned in agricultural production systems, limiting their use could help to make agriculture sustainable and resilient to climate change. In Senegal, the level of mineral fertilizers used in market gardening has become alarming in the Niayes area. As a result, microbial biotechnologies have been promoted for biofertilizer production of common bean (Phaseolus vulgaris L.) cultivation. Rhizobial inoculums have thus been used to reduce the rate of chemical nitrogen fertilizers being applied in cropping systems. Several investigations in the laboratory, on experimental stations and in the field have shown a possibility of a significant reduction in the use of nitrogen fertilizers in common bean production. Conventional mineral fertilization use can be reduced from over 120 kg N/ha to 20 kg N/ha. This contributes both to a very significant reduction in the application rate with the same level of yield and to an improvement in the standard of living. In addition, the environmental impact of using chemical fertilizers can be mitigated. This study is a contribution to the promotion of biofertilizers adoption in agricultural systems.

关键词： Sustainable Agriculture Mineral Fertilizer Inoculation Rhizobium Common Bean

Vitamin D Status in Healthy Children Aged 6 to 59 Months at the Pikine-Guediawaye Institute of Social Pediatrics, Dakar Suburbs (Senegal)

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Open Journal of Pediatrics 2025年第1期15卷 101-110页

作者： Babacar Niang Aliou Ndongo Aminata Mbaye Serigne Saliou Mbacke Ablaye Ndiaye Khadidatou diouf Abou Ba Abdallah Diallo Djibril Boiro Oulimata Ndiaye Ousmane Ndiaye Centre Hospitalier National dEnfants Albert Royer Dakar Senegal Centre Hospitalier Abass Ndao Dakar Senegal Laboratoire Biochimie Dakar Senegal Hpital Dalal Jam Guediawaye Senegal Institut de Pdiatrie Sociale Pikine Senegal

Introduction: Vitamin D plays a key role in phosphocalcic metabolism, in normal functioning of the immune system and in the prevention of certain forms of cancer. Systematic vitamin D supplementation has been implemented in most Western countries, which has drastically reduced the prevalence of rickets. In Senegal, a country with enough sunshine, no large-scale data exists on vitamin D deficiency in children. In addition, there are no guidelines from the Ministry of Health and Social Action (MoHSA) on vitamin D supplementation. Our objective was to determine the prevalence of vitamin D deficiency in children aged 6 to 59 months and to analyze the factors associated with it at the Institute of Social Pediatrics in Pikine-Guédiawaye, a suburb of Dakar. Patients and Methods: This was a prospective, descriptive and analytical cross-sectional study over a 3-month period (from January to March 2024) at the Institute of Social Pediatric (IPS) of Pikine-Guédiawaye. The study population consisted of all children aged 6 to 59 months free from any acute or chronic pathology, whose parents had agreed to answer the questionnaires after having consented and signed the consent and children who had had a sample taken for vitamin D dosage. Results: We included 102 children, 35 of whom had vitamin D deficiency, i.e. a prevalence of 34.31% with a slight male predominance (sex ratio 1.05). Infants aged 13 - 24 months were more affected (41.67%), but the difference was not statistically significant (p-value = 0.385). Patients with acute malnutrition had a significantly higher prevalence of vitamin D deficiency (54.17% of cases versus 28.38%) in those without acute malnutrition (p = 0.02). On the other hand, chronic malnutrition, underweight and diversification foods were not significantly associated with vitamin D deficiency (p of 0.60, 0.42 and 0.09 respectively). Conclusion: Vitamin deficiency affects one-third of apparently healthy children under 5 and this deficiency has no signific

关键词： Vitamin D Deficiency Children Supplementation

Development of new cowpea(Vigna unguiculata)mutant genotypes,analysis of their agromorphological variation,genetic diversity and population structure

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BIOCELL 2021年第2期45卷 345-362页

作者： MADE diouf SARA DIALLO FRANÇOIS ABAYE BADIANE OUMAR DIACK DIAGA diouf Laboratoire Campus de Biotechnologies Végétales Département de Biologie VégétaleFacultédes Sciences et TechniquesUniversitéCheikh Anta DiopDakar-FannDakar10700Sénégal Facultédes Sciences et Technologies de l’Education et de la Formation UniversitéCheikh Anta DiopDakar-FannDakar10700Sénégal

Cowpea is one of the most important legume grains in the sub-Saharan region of Africa used for human consumption and animal feed,but its production is hampered by biotic and abiotic constraints raising the need to broaden its genetic *** this purpose,seeds of two cowpea varieties Melakh and Yacine were irradiated with 300 and 340 Gy of gamma-ray,*** developed mutant populations were agromorphologically characterized from M5 to M7,while the genetic diversity of the latter was evaluated using 13 ISSR *** on the agromorphological characterization,variation of flower color,pod length,seed coat color,and seed weight with 78.01,68.29,94.48,and 57.58%heritability,respectively,were recorded in the mutant *** analyses allowed to identify the elite mutants based on their agromorphological traits,while Pearson’s correlation results revealed a positive correlation between yield and yield component *** subpopulations were identified through STRUCTURE analyses,but the assignment of the individuals in each group was improved using DAPC(Discriminant Analysis of Principal Components)*** of Molecular Variance revealed that the majority(85%)of the variance rather existed within groups than among(15%)***,our study allowed us to select new promising mutant genotypes that could be tested for multi-locational trials to evaluate their agronomic performance.

关键词： Agromorphological characterization Induced mutagenesis ISSR Plant breeding

Modeling of the Photovoltaic Module Operating Temperature for Various Weather Conditions in the Tropical Region

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1275-1284页

作者： Mame Cheikh diouf Mactar Faye Ababacar Thiam Alphousseyni Ndiaye Vincent Sambou Efficiency and Energetic Systems Research Group Alioune Diop UniversityBambeySenegal Laboratoire Eau EnergieEnvironnement et Procédés Industriels(LE3PI)UniversitéCheikh Anta DiopBambeySenegal

The operating temperature is a critical factor affecting the performances of photovoltaic(PV)*** this work,relevant models are proposed for the prediction of this operating temperature using data(ambient temperature and solar irradiance)based on real measurements conducted in the tropical *** each weather condition(categorized according to irradiance and temperature levels),the temperatures of the PV modules obtained using the proposed approach is compared with the corresponding experimentally measured *** results show that the proposed models have a smaller Root Mean Squared Error than other models developed in the literature for all weather conditions,which confirms the reliability of the proposed framework.

关键词： Photovoltaic operating temperature PV module weather condition

Influence Through Confluence

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ChinAfrica 2023年第11期15卷 42-43页

作者： ALY diouf 不详

The construction of Africa’s third-largest UN office compound in Dakar set to raise diplomatic clout of Senegal A long line of buildings can be seen in Diamniadio, a new metropolis being developed 40 km east of Senegalese capital Dakar. The brand-new, intelligent city will ease congestion in the capital and will be ready in 10 years, housing an international industrial park, ministerial buildings.

关键词： capital housing Africa

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Senegal Kicks Off Vaccination The inoculation campaign in Senegal starts off well with arrival of Chinese vaccines

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ChinAfrica 2021年第4期13卷 38-39页

作者： Aly diouf 不详

On February 17,Senegal received 200,000 vaccines from the Chinese company *** vaccine offered a breath of relief to a country severely hit by the COVID-19 *** President Macky Sall personally traveled to the Blaise Dia... 详细信息

关键词： travel doses vaccines

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Winning Hearts

ChinAfrica 2024年第3期16卷 44-45页

作者： ALY diouf

Sinohydro and Senegal join forces to provide drinking water in ***,a subsidiary of PowerChina,is currently engaged in efforts to substantially enhance the potable water supply in Dakar,Senegal.A diligent group of Chinese and Senegalese workers is engaged in roundthe-clock efforts along the Avenue du Front de Terre prolongée,which marks the starting point of the Route des Pères Maristes,with the objective of improving the distribution network for potable water in the Dakar *** a population density of 7,277 inhabitants per square km and an estimated 1.18 million inhabitants in 2023,there is an evident and increasing need for potable *** need is further compounded by significant water loss caused by the advanced age of the pipelines,with some pipes dating back to the colonial era.

关键词： Avenue starting network

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Building Foundation

ChinAfrica 2020年第7期12卷 48-49页

作者： Aly diouf 不详

Chinese tile manufacturer sets up factory in Senegal On January 14, Senegalese President Macky Sall cut the ribbon and inaugurated the country’s first ceramic tile manufacturing plant. This plant is owned by Twyford Ceramics, a Chinese company owned by Keda Industrial Group and Sunda International Group, is located in Sindia, which is at the very heart of the triangle formed by Mbour, Thies and Dakar.

关键词： owned ceramic triangle