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Assessment of Upper Guinea’s Wind Energy Potential with a View to Identifying Exploitable Sites

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Journal of Energy and Power Engineering 2024年第1期18卷 9-17页

作者： Nènè Aïssata baldé amadou Lamarana Bah Idrissa Diaby Cellou Kanté Adama Moussa Sakho Department of Energy Science Higher Institute of Technology of MamouMamou BP 063Mamou Republic of Guinea Teaching and Research Laboratory in Applied Energy Gamal Abdel Nasser University of ConakryConakry BP 1147Republic of Guinea Technical Laboratory Department Higher Institute of TechnologyMamou BP 063Mamou Republic of Guinea

As part of the national strategy to further develop the wind energy sector,the eight prefectures of Upper Guinea have been *** meteorological data recorded over thirty years(1991-2021)at a height of 20 m,we assessed wind resources in terms of characteristic speeds,power and available *** this end,the Weibull distribution method was used and the following values were obtained:3.66 m/s for the average speed;1,102.83 W/m^(2)for the available power and 8,747.06 kWh/m^(2)/year for the annual available energy.

关键词： Wind energy Weibull distribution high Guinea

Natural Enemies and Pest Control in Field-Grown Crop in Southern Senegal

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Advances in Entomology 2022年第4期10卷 287-299页

作者： Etienne Tendeng Babacar Labou El Hadji Serigne Sylla amadou baldé Mamadou Diatte Oumar Seydi Issa Alé Ndiaye Pape Diop Serigne Omar Sène Saliou Djiba Karamoko Diarra UCAD Integrated Production and Protection Laboratory in Agroecosystems (L2PIA) Faculty of Science and Technology Cheikh Anta Diop University Dakar Senegal ISRA Entomology Laboratory of Djibélor Agricultural Research Centre Senegalese Institute for Agricultural Research Ziguinchor Senegal

Crop pests are a permanent threat to horticultural production. Several control methods are recommended for their control, including biological control. This method based on the use of natural enemies is not well established. The objective of this study was to assess the diversity and abundance of natural enemies of crop pests. A survey of crops associated with pests was carried out on 144 fields in southern Senegal to measure the diversity and abundance of natural enemies of various crop pests, determine the native parasitoid complex and assess parasitism rates. Ecological indices were calculated to assess the diversity of natural enemies. A total of 25 natural enemy species were identified, including 15 parasitoids and 10 predators. Predatory Hemiptera and Parasitoid Hymenoptera were high biodiversity. The parasitism rates vary between 0 and 50% depending on the abundance of pests and parasitoid species. Knowledge of the diversity of natural enemies and the understanding of trophic interactions with pests are important in the development of biological crop protection in order to preserve resilience in agroecosystems.

关键词： Biodiversity Agroecosystem Crop Protection Pests Market Gardening Biological Control

First Record of Pristomerus pallidus (Hymenoptera: Ichneumonidae: Cremastinae) (Kriechbaumer) Parasitizing Hellula undalis (F.) (Lepidoptera: Pyralidae) in Crucifer Crop in Senegal

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Advances in Entomology 2023年第4期11卷 256-263页

作者： Etienne Tendeng Etienne Tendeng Babacar Labou El Hadji Serigne Sylla amadou baldé Mamadou Diatte Oumar Seydi Issa Alé Ndiaye Pape Diop Serigne Omar Sène Saliou Djiba Karamoko Diarra Integrated Production and Protection Laboratory in Agroecosystems (L2PIA) Faculty of Science and Technology Cheikh Anta Diop University (UCAD) Dakar Senegal Entomology Laboratory of Djibé lor Agricultural Research Centre Senegalese Institute for Agricultural Research (ISRA) Ziguinchor Senegal

Cabbage is today an economically important crop grown in more than 90 countries around the world. Production is constantly threatened by pests including the cabbage webworm, Hellula undalis (F.) (Lepidoptera: Pyralidae) which just one or two larvae can cause severe damage by infesting the growing points or shoots of young plants. Hellula undalis is difficult to control by the use of chemical insecticides. The establishment of effective biological control is needed. The parasitoid species Pristomerus pallidus (Hymenoptera: Ichneumonidae: Cremastinae) was recorded for the first time in Senegal on larvae of Hellula undalis from cabbage fields infested with H. undalis. Laboratory observed parasitism was 7.4%. This is the first record of Pristomerus pallidus parasitizing Hellula undalis from Senegal. Furthermore, studies on the potential regulation of Hellula undalis under controlled and field conditions need to be evaluated for utilizing this parasitoid as a biocontrol agent against the cabbage webworm. .

关键词： Biological Control Parasitoid Pest Market Gardening Ziguinchor Casamance

Evaluation of Nutritional Composition of Two Fonio Ecotypes Grown in Casamance (Sénégal)

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Open Journal of Applied Sciences 2024年第2期14卷 533-544页

作者： amadou Bouye Seydi amadou Diop Animal Physiology Laboratory Department of Animal Biology Faculty of Science and Technology Cheikh Anta Diop University Dakar Senegal Analytical Chemistry and Bromatology Laboratory Faculty of Medicine Pharmacy and Odontology of Dakar Cheikh Anta Diop University Dakar Senegal

In order to better understand the cultural route, biochemical and nutritional composition of two ecotypes of fonio, a study was carried out in village of Tambananing located approximately 7 km from Sédhiou. The objective of studies was to determine nutritional composition of two ecotypes of fonio: the first called momo in short-cycle mandinka (75 - 90 days) and the other called medium-cycle dibong (90 - 110 days). For this, samples of two ecotypes were collected in an experimental field which was split into two equal parts, one sown with the momo ecotype and the other with the dibong ecotype. The nutritional composition (sugars, fats, proteins, minerals, ash, etc.) and the physicochemical properties (pH, humidity, water activity, color, etc.) of fonio’s were determined by appropriate physicochemical methods. The two ecotypes exhibited quite similar physicochemical properties. The levels of biochemical compounds were relatively close with protein contents of 7.05 ± 0.06 mg/100g for the momo ecotype and of 8.02 ± 0.04 mg/100g for the dibong ecotype, in carbohydrates (76.37 ± 1.2 mg/100g for momo and 78.7 ± 1.5 mg/100g for dibong) and in fat (2.92 ± 0.05 mg/100g for momo and 3.14 ± 0.004 mg/100g for dibong). Identical mineral element contents were found except for iron, an element for which the contents were 10.80 ± 0.008 mg/100g for the momo ecotype and 99.59 ± 0.005 mg/100g for the dibong ecotype. Thus, two ecotypes of fonio present a fairly interesting nutritional composition and their consumption deserves to be popularized and could contribute effectively to fight against the problems of malnutrition of certain vulnerable groups.

关键词： Biochemical Composition Ecotypes Fonio Casamance

Prevalence of Diabetes and Hypertension on World Diabetes Day 2022 in Guinea

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Open Journal of Endocrine and Metabolic Diseases 2024年第1期14卷 1-6页

作者： Mamadou Dian Mamoudou Diallo Mamadou Mansour Diallo Mamadou Chérif Diallo Mamadou Alpha Diallo Alpha Mamadou Diallo Mody Abdoulaye Barry Kadija Dieng Abdoul Mazid Diallo El’Hadj Zainoul Bah Kadidiatou Bah Amatoulaye Diallo amadou Kaké Naby Moussa baldé Oumou baldé Unité de Diabétologie H&#244pital régional de Labé Labe Guinea Université de Conakry Conakry Guinea Service de Diabétologie CHU Donka Conakry Guinea Fondation de Lutte Contre le diabète et MNT Conakry Guinea

Introduction: Diabetes mellitus and hypertension are chronic diseases that are on the rise and pose a major public health problem among the priorities of healthcare systems. Objectives: Determine the prevalence of diabetes and hypertension and describe the sociodemographic characteristics of those screened. Materials and Methods: This was a cross-sectional study organized during a diabetes and hypertension screening campaign that took place in Conakry and five (05) inland regions on November 14, 2022. Results: 2050 people were screened, of whom 33.12% were housewives, the average age was 44.78 ± 16.23 years, and 55.27% were women. The screening sites were the city of Conakry 741 (36.15%), the Labé region 424 (20.68%), the N’Zérékoré region 298 (14.54%), the Faranah region 241 (11.75%), the Mamou region 210 (10.24%) and the Boké region 136 (6.63%). The prevalence of diabetes and hypertension were respectively 12.5% and 43.38% for the Boké region;6.19% and 16.19% for the Mamou region;3.02% and 21.81% for the N’Zérékoré region;31.95% and 13.69% for the Faranah region;9.67% and 20.28% for the Labé region;2.83% and 20.28% for the city of Conakry. Conclusion: Despite the limitations of the study duration, our series highlighted the high prevalence of diabetes and hypertension among people screened on World Diabetes Day 2022. Raising public awareness of a healthy lifestyle is essential for the prevention and control of diabetes and hypertension.

关键词： Prevalence Diabetes Hypertension

Design of an Interconnection Architecture and Sizing of Two (2) EPC Core Networks: The Case of Orange-Guinea

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Journal of Energy and Power Engineering 2024年第2期18卷 59-70页

作者： Mamadou Sadigou Diallo Kadiatou Aissatou Barry amadou Lamarana Bah Mamadou Sanoussy Camara Janvier Fotsing amadou Barry amadou Oury Bah Gamal Abdel Nasser University of Conakry(UGANC) P.O.BOX 1147Conakry 001BP 1147Republic of Guinea National Advanced School of Engineering University of Yaoundé1Yaoundé1001BP 337Republic of Cameroon

With the arrival of the 4G and 5G,the telecommunications networks have experienced a large expansion of these *** enabled the integration of many services and adequate flow,thus enabling the operators to respond to the growing demand of *** rapid evolution has given the operators to adapt,their methods to the new technologies that *** complexity becomes more important,when these networks include several technologies to access different from the heterogeneous network like in the 4G *** dimensional new challenges tell the application and the considerable increase in demand for services and the compatibility with existing networks,the management of mobility intercellular of users and it offers a better quality of ***,the proposed solution to meet these new requirements is the sizing of the EPC(Evolved Packet Core)core network to support the 5G access *** the case of Orange Guinea,this involves setting up an architecture for interconnecting the core networks of Sonfonia and *** objectives of our work are of two orders:(1)to propose these solutions and recommendations for the heart network EPC sizing and the deployment to be adopted;(2)supply and architectural interconnection in the heart network EPC and an existing heart *** our work,the model of traffic in communication that we use to calculate the traffic generated with each technology has link in the network of the heart.

关键词： 5G network 4G network(EPS(evolved packet system)) 3G network(UMTS:Universal Mobile Telecommunications System) EPC network of the heart architecture dimensional Orange Guinea technology service

Identification of Antioxidant Additives in Food Products Sold in Dakar Markets

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Open Journal of Applied Sciences 2024年第1期14卷 51-62页

作者： Alé Kane Papa amadou Diakhaté Sokhna Ndao Modou Dieng Mady Cisse amadou Diop Laboratory of Biological Agronomic and Food Sciences and Complex Systems Modelling (LABAAM) University Gaston Berger (UGB) Saint-Louis Senegal UFR of Agronomic Sciences Aquaculture and Food Technology (UFR S2ATA) UGB Saint-Louis Senegal Analytical Chemistry and Bromatology Laboratory University Cheikh Anta Diop of Dakar Dakar Senegal Department of Chemical Engineering and Applied Biology University Cheikh Anta Diop of Dakar Dakar Senegal

The use of food additives in industrial production has the advantage of improving sensory properties, technological quality and extending the shelf life of foods. Among the most widely used additives are antioxidants, which prevent oxidation, browning and rancidity reactions in foods. However, the strong presence of these additives on the market is not without risks for human health, and should be controlled to guarantee food safety. Analysis of the risks associated with consumption of foods containing these additives requires, among other things, information on the frequency of use of these additives in various consumer products. The aim of this study is therefore to identify the antioxidants present in industrial food products distributed in Dakar. The methodology adopted consists of a qualitative analysis based on the identification of additives from food labels. Investigations were carried out in 9 stores, 4 superettes and 2 supermarkets located in different districts of Dakar. The results revealed the presence of 12 antioxidant additives, dominated by citric acid (53%) and ascorbic acid (29%). These studies have also highlighted the simultaneous use of several antioxidants in the same food product. Moreover, for some artificial antioxidants identified antioxydant such as BHA and BHT, health risks are associated with their consumption. The results of this study open up prospects for the development of information databases on food additives.

关键词： Additives Antioxidant Food Products Market Risk

Comparative Study of the Protein Contents of Local and Imported Rice Consumed in Senegal

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Open Journal of Applied Sciences 2024年第2期14卷 561-571页

作者： amadou Bouye Seydi Nadina Zuleika Leite Serigne Omar Sarr Yérim Mbagnick Diop amadou Diop Animal Physiology Laboratory Department of Animal Biology Faculty of Science and Technology Cheikh Anta Diop University Dakar Senegal Analytical Chemistry and Bromatology Laboratory Faculty of Medicine Pharmacy and Odontology Cheikh Anta Diop University Dakar Senegal

Protein is essential for the growth and maintenance of the body. They play a crucial role in different biological processes. This study focuses on comparing the protein contents of local rice grown in the Senegal River valley and rice imported from Asia. The objective is to evaluate the importance of the protein nutritional value of local rice compared to imported rice. Protein contents were determined using the Kjeldahl method. The results of the protein assays show that local rice varieties such as Sahel 108 and Sahel 134 grown in the Thilène basins had protein percentages comparable to those of imported rice. The protein percentages were 15.19% ± 0.91% for the Sahel 108 variety and 16.62% ± 0.01% for the Sahel 134 variety compared to 15.8% ± 0.01% on average for imported rice. Thus from the point of view of protein content, local rice has a nutritional value identical to that of imported rice which it can validly replace. It is important in Senegal to encourage local production, which would make it possible to reduce imports on the one hand and to make quality rice available to the local Senegalese market on the other. Sahel varieties with high protein contents deserve large-scale development to meet the country’s protein needs.

关键词： Proteins Rice Nutritional Value Kjeldahl Method River Valley Senegal

Contribution of Metabolic Imaging in the Exploration of Cognitive Disorders Related to COVID-19

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Advances in Molecular Imaging 2024年第1期13卷 1-5页

作者： Serigne Moussa Badiane amadou Barro Elhadji amadou Lamine Bathily Louis Augustin Diaga Diouf Biophysics and Nuclear Medicine Gaston Berger University Saint-Louis Senegal ENT Department Fann University Hospital Dakar Senegal Biophysics and Nuclear Medicine Cheikh Anta Diop University Dakar Senegal

On March 11, 2019, the WHO declared COVID-19 a pandemic disease. It is a respiratory tropism SARS COV 2 infection. In the emergency of the pandemic, in medical imaging, only computed tomography (CT) of the lungs was favored to assess lung lesions. In addition, many cases of post-COVID-19 cognitive disorders have been reported. As the curve dips and services restart correctly, other imaging techniques have been used to better explore the disease. The objective of this presentation is to illustrate the contribution of metabolic imaging in the exploration of post COVID-19 cognitive disorders and to discuss the pathophysiological mechanisms. Hypometabolism brain lesions are objective signs of functional impairment whose pathophysiological mechanism is not yet fully understood. Metabolic imaging with PET-SCAN is a suitable tool for exploring these disorders, both for the severity and extent of the lesions and for the topography of the brain damage.

关键词： COVID-19 Nuclear Medicine Cognitive Disorders PET-SCAN