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Profile of the Blood Count among People Living with HIV Monitored at the Institute of Social Hygiene and the Aristide Le Dantec Hospital in Dakar

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Open Journal of Blood Diseases 2022年第4期12卷 133-141页

作者： faye cheikh ibrahima Coly Mame Ngoné Makalou Demba Sène Abdoulaye Sall Abibatou Touré Awa Oumar Ly Fatouamata Hematology Laboratory of the Aristide le Dantec Hospital Dakar Senegal Health Sciences Training and Research Unit Hematology Laboratory of the Ziguinchor Peace Hospital Assane Seck University of Ziguinchor Ziguinchor Senegal Training and Research Unit in Health Sciences Hematology Laboratory of the Sickle Cell Disease Control Center of Saint Louis Gaston Berger University of Saint Louis Dakar Senegal Pharmacy and Odontostomatology Faculty of Medicine Cheikh Anta Diop University of Dakar Dakar Senegal Dermatology Department of the Social Hygiene Institute of Dakar Dakar Senegal

Introduction: The human immunodeficiency virus (HIV) is a pandemic of concern to the World Health Organization. It is all the more worrisome because if not properly managed, it can be responsible for several complications, including abnormal blood counts. These abnormalities may also be related to treatment. Objectives: The main objective of this study is to show that adequate antiretroviral therapy can correct various abnormalities exerted by HIV on patients’ blood counts. The specific objective is to determine all the abnormalities we can see in blood count before and during HIV treatment. Materials and Methods: Our study was conducted in the hematology laboratory and the dermatology departments of the Aristide Le Dantec Hospital and the Institute of Social Hygiene. It took place from December 2009 to October 2011. It is a retrospective descriptive and analytical study involving HIV-positive patients (HIV 1 and 2) and under antiretroviral treatment (at least six months of treatment). We included 110 patients in the study. Blood counts were performed at the hematology laboratory of the Aristide le Dantec hospital using a KX21 automaton. Each patient received three blood counts during the first six months of treatment (M0, M3 and M6). A univariate analysis was performed to determine the profile of the abnormalities of the blood count and the chi 2 test was used and a threshold of p 0.05 was considered significant. Results: The mean age of the patients was 38.6 ± 8.6 years (extremes of 18 and 64 years) with a sex ratio of 0.42 (77 females and 33 males). The prevalence of anemia was 80% (n = 88) at M0, 53, 63% at M3 (n = 59), and 38.20% at M6 (n = 42) (p = 0.02). We noted a favorable evolution with treatment. For the other abnormalities, the evolution was favorable for leukopenia (p = 0.011) and thrombocytopenia (p = 0.007). Conclusion: Our study showed a correction of blood count abnormalities in PLHIV with antiretroviral treatment.

关键词： Blood Count Abnormalities Antiretroviral Treatment PLHIV

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Effects of Chemical Treatment on the Physical Properties of Typha

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1409-1418页

作者： ibrahima Diaw Mactar faye Seckou Bodian Vincent Sambou Efficiency and Energetic Systems Research Group Alioune Diop UniversityBambeyBP 30Senegal Laboratoire Eau EnergieEnvironnement et Procédés Industriels(LE3PI)Cheikh Anta Diop UniversityDakar-FannBP 5085Senegal

Plant-based concretes are produced from plant aggregates and a *** fibers are mainly composed of saccharides(sugars)and these sugars can decrease the concentration of Ca2+ions in the cement pore solution and delay the formation of hydration *** improve the interfacial bond between fibers and matrix a chemical treatment is widely *** study investigates the effect of sodium hydroxide treatment on physical and hygroscopic properties of Typha *** particular,a 5%sodium hydroxide solution is used to treat these aggregates and their bulk and absolute densities,porosity,water content and water absorption are evaluated *** indicate that bulk and absolute densities increase after treatment from 56.44 kg/m^(3) to 122.57 kg/m^(3) and 541.93 kg/m^(3) to 555.17 kg/m^(3),*** treatment reduces porosity of Typha from 89.58%to 77.92%and decreases water content from 1.4%to 1%.The treatment with sodium hydroxide reduces substantially the water absorption of the aggregates.

关键词： Sodium hydroxide treatment typha aggregates hygroscopic properties physical properties

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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

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Determination of the Thresholds of the Climatic Classification According to the Discharges in the Upper Senegal River Basin

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Journal of Geographical Research 2022年第1期5卷 12-24页

作者： cheikh faye Department of Geography U.F.R.Sciences and TechnologiesAssane Seck University of ZiguinchorGeomatics and Environment LaboratoryBP 523 ZiguinchorSenegal

Floods are the most common type of natural disaster in the world and one of the most *** in weather conditions such as precipitation and temperature result in changes in *** better understand the floods and eventually develop a system to predict them,we must analyze in more detail the flow of *** purpose of this article is to analyze the discharges in the upper Senegal River Basin by focusing on determining the limits of the climatic classification according to past *** daily discharges from May 1,1950 to April 30,2018 were chosen as the study *** flow data have been grouped into annual discharges and classified as very wet,moist,medium,dry and very dry each ***,the flow data were divided into two seasons or periods each year:high water and low *** statistical variables used in this study are the average,the standard deviation,the coefficient of variation and the *** results of the climate classification that corresponds to a log-normal distribution indicate a total of 17 years classified as averages(25%of the series),14 classified as wet(20.6%),29 classified as dry(42.6%)and 8 classified as very wet(11.8%),very dry classifications being *** analysis showed that the months of the high water period,such as September,had the highest flow,and the period of low water,such as May,had the lowest *** results of the flow analysis were then compared with changes in *** results obtained show similar climatic classifications between rainfall and flow in the basin.

关键词： Limits Climatic classification Flow elapsed High basin Senegal River basin

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Microfacies and Depositional Environments of Miocene Isolated Carbonate Platforms from Central Luconia, Offshore Sarawak, Malaysia

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1778-1796页

作者： Hammad Tariq JANJUHAH José Antonio GáMEZ VINTANED Ahmed Mohamed Ahmed SALIM ibrahima faye Mumtaz Muhammad SHAH Deva Prasad GHOSH SEACARL Department of Geoscience University Technology PETRONAS Perak Malaysia 32610 Department of Geoscience University Technology PETRONAS Perak Malaysia 32610 Department of Fundamental and Applied Science University Technology PETRONAS Perak Malaysia 32610 Department of Earth Science Quaid-i-Azam UniversityIslamabad Pakistan 45320 CoE in CSIf Department of Geoscience University Technology PETRONAS Perak Malaysia 32610

The Luconia Province-offshore Sarawak-is a key geological unit for understanding the distribution of hydrocarbon resources in Malaysia. Nevertheless, little effort has been made to address the palaeoenvironmental characteristics of the Tertiary carbonates in the key sector of Central *** study the sedimentology and petrography of core samples from a well in Central Luconia, for which thirteen microfacies have been identified reflecting different depositional settings. This is the first microfacies scheme elaborated for Luconian carbonates. Lithofacies and microfacies distribution are compatible with deposition in a reef complex, originating around a framework reef, within the euphotic zone. Sediments were deposited in environments of backreef, reef crest, and forereef. The fair weather wave base is marked by the presence of coralline red algae, foraminifera, decreasing degree of bioclast fragmentation and other microfacies features. As a result, a depositional-environmental model is constructed, depicting a reef complex built around a framework reef developed on the margin of an isolated platform. In addition, an innovative, preliminary time series analysis of facies, microfacies and depositional environment data reveal the existence of seasonal cycles in the stacking patterns of facies and microfacies.

关键词： central Luconia sedimentology microfacies reef complex depositional environments time series

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The Magnetic Field as Trigger for Disturbances of a Flow of a Newtonian Fluid through a Cylindrical Pipe with a Horizontal Axis

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Modern Mechanical Engineering 2022年第4期12卷 83-97页

作者： ibrahima Kama Mamadou Lamine Sow cheikh Mbow Department of Physics University Cheikh Anta Diop (UCAD) Dakar Senegal

A Fourrier Petrov Galerkin spectral method is described for high accuracy computation of linearized dynamics for flow in a circular pipe. The code used here is based on solenoidal velocity variables. It is written in FORTRAN. Systematic studies are presented on the dependence of eigenvalues and other quantities on the axial and azimuthal wave number;the reynolds’ number Re and a new none-dimensional number Ne. The flow will be considered stable if all the real parts of the eigenvalues are negative and unstable if only one of them is positive.

关键词： Newtonian Fluids Magnetic Field Linear Stability Petrov-Galerkin Generalized Eigenvalue Problem

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Severity and Magnitude of Caries among Rural Populations in Ferlo in Senegal

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Open Journal of Epidemiology 2016年第1期6卷 10-15页

作者： Diouf Massamba Boetsch Gilles Cisse Daouda Lo cheikh Mouhamadou Mbacké Kanouté Aida Diop Mbatio Barro ibrahima faye Daouda Public Health Service Department of Dentistry Cheikh Anta Diop University Dakar Senegal CNRS-UMI “Environment Health Society” Marseille France

Oral diseases belong to non-communicable diseases. They are characterized by their importance especially in disadvantaged areas. The objective of this study was to measure the extent and severity of caries among rural populations of Widou, an area located in central Ferlo. It was a descriptive and cross-sectional study which involved 300 individuals selected using simple random sampling. The socio-demographic characteristics collected were sex, age, educational level and occupation. The dental status was rated by the prevalence of dental caries and DMF and its components. The data were analyzed with the software Epi info 3.4.5 with 5% of threshold statistical significance. The prevalence of dental caries was 89%. The mean DMF was 5.4 ± 5.6 with a maximum of 26. The mean of component “D” was 3.8 with a maximum of 24. Variables significantly associated with dental caries were sex (p = 0.012) and occupation (p = 0.03). The extent and severity of caries in rural areas of the Ferlo evoke a relatively low support or management and require efforts in prevention, directed on oral hygiene and dietary habits.

关键词： Dental Status Rural Population Ferlo Senegal

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Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskali,involved in schistosomiasis transmission

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Infectious Diseases of Poverty 2024年第1期13卷 98-99页

作者： Papa Mouhamadou Gaye EI Hadj ibrahima Ndiaye Souleymane Doucoure Doudou Sow Mapenda Gaye Ndiaw Goumballa Carole Cassagne Coralie L'Ollivier Oleg Medianikov cheikh Sokhna Stephane Ranque Aix-Marseille University IRD AP-HM SSA VITROME Marseille France VITROME International IRD-UCAD Campus Dakar Senegal Hospital-University Institut (IHU) Mediterranée Infection Marseille France Departement of Animal Biology Faculty of Sciences and Techniques UCAD Dakar Senegal Department of Parasitology-Mycology UFR Sciences de la Santé Université Gaston Berger Saint-Louis Senegal

Background Freshwater snails of the genera Bulinus spp.,Biomphalaria spp.,and Oncomelania *** the main intermediate hosts of human and animal *** of these snails has long been based on mor-phological and/or genomic criteria,which have their *** limitations include a lack of precision for the morphological tool and cost and time for the DNA-based ***,Matrix-Assisted Laser Desorp-tion/lonization Time-Of-Flight(MALDI-TOF)mass spectrometry,a new tool used which is routinely in clinical microbi-ology,has emerged in the field of malacology for the identification of freshwater *** study aimed to evaluate the ability of MALDI-TOF MS to identify Biomphalaria pfeifferi and Bulinus forskali snail populations according to their *** This study was conducted on 101 *** and 81 *** snails collected in three distinct geo-graphical areas of Senegal(the North-East,South-East and central part of the country),and supplemented with wild and laboratory *** which had previously been morphologically described were identified by MALDl-TOF MS[identification log score values(LSV)≥1.7],after an initial blind test using the pre-existing *** DNA-based identification,new reference spectra of ***(n=10)and ***(n=5)from the geographical areas were added to the MALDI-TOF spectral *** final blind test against this updated database was per-formed to assess identification at the geographic source *** MALDI-TOF MS correctly identified 92.1%of 101 *** snails and 98.8%of 81 *** *** the final blind test,88%of 166 specimens were correctly identified according to both their species and sampling site,with LSVs ranging from 1.74 to *** geographical source was adequately identified in 90.1%of 91 *** and 85.3%of 75 *** *** Our findings demonstrate that MALDI-TOF MS can identify and differe

关键词： Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry Snail Intermediate host Biomphalaria pfeifferi Bulinus forskali Schistosomiasis Senegal

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Effects of the Reynolds and Weissenberg’s Numbers on the Stability of Linear Pipe Flow of Viscous Fluid

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Modern Mechanical Engineering 2018年第4期8卷 264-277页

作者： ibrahima Kama Mamadou Lamine Sow Kodjo Kpode cheikh Mbow Department of Physics University Cheikh Anta DIOP-UCAD Dakar Senegal Department of Physics University of Kara Kara Togo

A Fourier-Chebyshev Petrov-Galerkin spectral method is described for high accuracy computation of linearized dynamics for flow in a circular pipe. The code used here is based on solenoidal velocity variables and is written in FORTRAN. Systematic studies are presented of the dependence of eigenval-ues and other quantities on the axial and azimuthal wave numbers;the Reyn-olds’ number of up to 107 and the Weissenberg’s number that is considered lower here. The flow will be considered stable if all the real parts of the ei-genvalues obtained are negative and unstable if only one of these values is positive.

关键词： Viscoelastic Fluids Oldroyd-B Model Linear Stability Petrov-Galerkin Generalized Eigenvalue Problem

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Hydrogeochemical Characterization of Aquifer Systems and Surface Water/Groundwater Relations in the Lower Senegal River Valley

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Journal of Geoscience and Environment Protection 2024年第6期12卷 232-254页

作者： Abibatou Camara Fatou Diop Ngom Moctar Diaw cheikh Tidiane Wade ibrahima Mall Department of Geology Cheikh Anta Diop University Dakar Senegal Department of Applied Geosciences and Environment Amadou Mahtar Mbow University Dakar Senegal

This study assesses the chemical quality of water resources in the Lower Senegal River valley, based on 35 samples collected in November 2022. Major ion concentrations in surface water and groundwater were analyzed using classical geochemical interpretation diagrams (Piper, GIBBS, etc.) and multivariate geostatistical analyses, including hierarchical cluster analysis (HCA) and principal component analysis (PCA). The results revealed three types of facies: Ca-Mg-HCO3-type facies, characteristic of poorly mineralized waters such as surface waters and groundwater from dune formations and the alluvial plain close to the hydraulic axis;Na-Cl type facies associated with well waters located in the alluvial plain that tap Inchirian or Nouakchottian shallow reservoirs and Maastrichtian deep borehole waters;and mixed Ca-Cl and Na-HCO3 type facies observed in certain floodplain and dune reservoirs. The results showed a strong correlation between sodium, chlorides, bromides, and electrical conductivity, indicating a significant contribution of these ions to groundwater mineralization. The various sources of water mineralization include mixing processes between surface water or rainwater, or calcite or dolomite dissolution processes (for weakly mineralized waters), basic exchanges or inverse basic exchanges between the aquifer and the water table (for moderately mineralized waters), and evaporation processes, halite dissolution, and paleosalinity during periods of marine transgression and regression (for highly mineralized waters). The study also highlighted the high vulnerability of the alluvial aquifer to pollution from intensive irrigated agriculture, as significant quantities of sulfates and nitrates were measured in some samples. These results also highlight the importance of water quality management in the Lower Senegal Valley, particularly as concerns the protection of the alluvial aquifer against pollution from irrigated agriculture.

关键词： Senegal River Valley Groundwater Pollution Agriculture Alluvial Aquifer

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