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Substitution of Kasila Group Basalt with the Archean Man Gneiss in Asphalt and Hydraulic Concrete Mix Design (Sierra Leone)

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Open Journal of Civil Engineering 2019年第4期9卷 291-310页

作者： ibrahima Sow ibrahima khalil cisse Doctoral School of the University of Thies Senegal & Comapagnie Sahélienned’ Entreprises Dakar Senegal Laboratoire de Matériaux Mécanique et Hydraulique (LMMH) Ecole Polytechnique de thiès Thiès Senegal

The study of the performances of the Archean of Man gneiss aggregates with the addition of filler to replace the basalt of Kasila group in the asphalt and concrete mix design of southern Sierra Leone is presented in this document. The goal is to compare the results of the asphalt and concrete mix design with gneiss and basalt aggregate. The applied methods and design used are 1) Volumetric design and Marshall method for the asphalt, 2) French Dreux-Gorisse Method for the concrete. We added 2% of gneissic filler and 2% portland cement type 42.5 R to the asphalt hot mix with the gneiss aggregates to follow the criteria variation. The Marshall, the diametric compression and the Duriez tests require us to perform four different types of mix design. The four mix designs meet the requirements but F2 and F4 give the best mechanical properties. F2 (gneiss + 2% filler) and F4 (basalt) have many similarities from which we can conclude their interchangeability. F2 gives 5255 of optimal bitumen content. In regards to hydraulic concrete, the results of the compressive strength test (cement content 350 kg CMI 42.5 R/m3) with the gneiss and basalt aggregates are respectively 40 MPa and 45 MPa at 28 days curing: these values are greater than 35 MPa required by the technical specifications. The use of the Super Fluid ® Thermoplast 120 admixture, to increase the concrete compressive strength, is justified by the requirement of a minimum of 80% Rc28 at 24 hours. For both types of concrete, we have at 24 hours, 34 and 35 MPa which are higher than the minimum of 32 MPa (in 24 h). These results meet the requirements of the technical specifications.

关键词： Gneiss Basalt Asphalt Concrete Hydraulic Concrete Marshall Duriez Diametric Compression

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Optimization of the Bitumen Content of a Basaltic Semi-Granular Bituminous Concrete

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Open Journal of Civil Engineering 2018年第4期8卷 460-472页

作者： Souleymane Mbengue Djibril Sow ibrahima khalil cisse Experimental Research and Study Center for Equipment Ministry of Infrastructure Thiès Senegal University Institute of Technology University of Thiès Thiès Senegal Polytechnic School of Thiès Ministry of Higher Education Research and Innovation Thiès Senegal

Various studies have been conducted in the past by researchers who have proposed diverse solutions to control the premature degradation noted on flexible pavements. It turns out that the binder content remains a parameter so far not mastered and its optimization remains an imperative to produce a quality mix capable of meeting the technical and economic requirements sought in a formulation study. This article mainly aimed to optimize the hydrocarbon binder content of a 0/14 granular class semi-granular bituminous concrete using the Marshall and Duriez method. In the first part of the study, the different constituents were characterized according to the standards in force. The second allowed to describe the methodology used to determine the mixture and calculated the theoretical binder content. A theoretical mixture, entering the reference zone was defined at first. Following the characterization of the mixture in the laboratory, the granulometry curve of the mixture was inserted into the reference zone. This mixture was then preserved for the rest of the study. Then, it was theoretically determined bitumen contents ranging from 5.13% to 5.75% for wealth modules ranging from 3.3% to 3.7%. Thus, the Marshall method was used to characterize the performance of the mixture as a function of the binder content. The results obtained led to the selection of two grades of binders 5.13% and 5.28% for the study of water resistance using the Duriez method. On the basis of the results obtained on the Duriez test, the mixture with a binder content of 5.28% satisfies a good part of the criteria selected. This content corresponds to a wealth module of 3.4%.

关键词： Optimize Binder Bituminous Concrete Spindle Marshall Duriez Wealth Module

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External Otitis: Epidemiological, Clinical, Etiological, and Therapeutic Aspects at the Oto-Rhino-Laryngology Department of Mamou Regional Hospital

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第3期13卷 213-224页

作者： Mamadou Mouctar Ramata Diallo Sayon Kourouma Oumou Amadou Diallo ibrahima Diallo Francine Haba Alsény cisse Raphan Madi Kaba Keita Abdoulaye Keita Alpha Oumar Diallo ENT Department Mamou Regional Hospital Mamou Guinea ENT Department Conakry Military Hospital Conakry Guinea ENT Department IgnaceDeen National Hospital Conakry Guinea ENT Department Donka National Hospital Conakry Guinea ENT Department Lab&#233 Regional Hospital Lab&#233 Guinea ENT Department N&#8217Z&#233r&#233kor&#233 Regional Hospital N&#8217Z&#233r&#233kor&#233 Guinea

Introduction: External otitis (OE) is an acute or chronic inflammation or infection of the external ear resulting from an imbalance in the external auditory canal secondary to microtrauma, maceration, eczema, or a foreign body in the external auditory canal. Objective: To study cases of external otitis at the Mamou Regional Hospital. Materials and Methods: This was a prospective descriptive study conducted over a period of six (6) months from July 1st to December 31st, 2016. It included all patients admitted to the ENT department of the Mamou Regional Hospital. Results: During the study period, 712 patients were admitted to the department for various pathologies, of which 103 met our selection criteria, representing a frequency of 14.46%. The mean age of the patients was 33.74 years with a range of 1 to 90 years. Males predominated in the sample, accounting for 59.22%. The vast majority of patients resided in urban areas, constituting 61.17% of the sample. In our study, all patients consulted for otalgia (100%), and over half (53.39%) for hypoacusis. We formally identified rhinitis in 66.66% of cases, while diabetes was found in only 4 patients (11.11%). Otomycosis was the most commonly identified condition (53.39%), followed by furuncles (33.98%). Ear drops containing antibiotics were administered to all patients, although 66.60% received antibiotic therapy. Conclusion: External otitis is a relatively common condition, particularly among children and the elderly. Diagnosis can be made based on pain upon traction of the pinna and pressure on the tragus.

关键词： External Otitis ENT Mamou Regional Hospital

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Valuation of Laterite in Low-cost Building in West Africa

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Journal of Architectural Environment & Structural Engineering Research 2020年第3期3卷 1-3页

作者： ibrahima Sow ibrahima khalil cisse Souleymane Mbingue Doctoral School of the University of Thies(ed2ds) Senegal&Comapagnie Sahélienne d’EntreprisesDakarSenegal Laboratoire de Matériaux Mécanique et Hydraulique(LMMH)Ecole Polytechnique de thièsThièsSénégal Doctoral School of the University of Thies(ed2ds) Senegal

The study of the performance of raw clay bricks has made it possible to develop laterite in Eco village construction *** tests(particle size analysis,Atterberg limits,Proctor,shrinkage limit,and sand equivalent)made it possible to characterize the laterite,the sand,and the E1 mixture(70%laterite and 30%sand).By adding binders to E1,three other types of mixtures E2,E3,and E4 have been *** improved E1 sample:(1)At 2.5%of cement gives E2;(2)At 10%of lime gives E3;(3)with 0.8%*** making the bricks using the samples E1,E2,E3,and E4,we perform uniform compression test at 3,7,and 21 *** samples have simple compressive strengths greater than 0.5 MPa(in accordance with standard NF EN 771-1)after 3 *** evolution from 0.5 to 2.5 MPa,between 3 and 7 days,shows a jump of *** 7 to 21 days the evolution curve of the Rc shows a slight ascension then a plateau pace(2.5,2.51,2.56 MPa).From these results,we concluded that they were used according to the area and the type of *** use of the sample E1 is proposed in arid zones or with low rainfall,the sample E2,and E3 in the rainy zones without risk of capillary rise and the sample E4 in the rainy zones with the risk of capillary rise.

关键词： Brick Cement Lime Lignosulfonates Simple compression Eco village

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Otorhinolaryngological (ORL) and Cervicofacial Injuries Resulting from Road Accidents within the Otorhinolaryngology (ORL) Department of the Regional Hospital of Mamou

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第1期13卷 16-28页

作者： Mamadou Mouctar Ramata Diallo ibrahima Diallo Alsény Camara Mamadou Aliou Diallo Raphan Madi Kaba Keita Abdoulaye Sow Alsény cisse Sory Sacko Mamadou Gouraissiou Diallo Abdoulaye Keita Alpha Oumar Diallo Ear Nose and Throat (ENT) Department Regional Hospital Mamou Mamou Guinea Ear Nose and Throat (ENT) Department National Hospital Donka Conakry Guinea Ear Nose and Throat (ENT) Department Regional Hospital N’zérékoré N’zérékoré Guinea Ear Nose and Throat (ENT) Department Regional Hospital Labé Labé Guinea Ear Nose and Throat (ENT) Department National Hospital Ignace Deen Conakry Guinea

Introduction: Otorhinolaryngological (ORL) and cervicofacial traumas encompass injuries affecting the neck, face, and ORL region, resulting from external influence. The objective of this study was to conduct an epidemiological and clinical analysis of ORL and cervicofacial injuries observed in victims of road accidents treated at the Otorhinolaryngology (ORL) department of the Regional Hospital of Mamou. Materials and Methods: This prospective and descriptive study was conducted over a period of 12 months, from January 1st to December 31st, 2021, within the Otorhinolaryngology (ORL) department of the Regional Hospital of Mamou. It included patients hospitalized for ORL and/or cervicofacial traumas resulting from road accidents during the study period. Results: A total of 348 cases were included, representing 36.22% of all traumas related to road accidents (AVP) within the Regional Hospital of Mamou. The average age of the patients was 26.44 years, with a sex ratio of 3.83, favoring males. The dominant socio-professional category was students, encompassing 32.47% of cases. Road accidents were mainly associated with motorcycle use (31.32% motorcycle-to-motorcycle, 24.43% motorcycle skidding, 13.51% motorcycle-pedestrian). Facial region injuries were the most common, accounting for 69.03% of cases, followed by rhinological injuries (17.28%) and otological injuries (13.69%). Associated injuries were predominantly closed head traumas (52.55%) and lower limb fractures (20.41%). Imaging was underutilized. Regarding surgical interventions, reconstructive surgery was the most predominant, accounting for 52.51% of cases, with a management timeframe of 30 minutes to 12 hours for 99.72% of patients. Conclusion: Road traffic accidents remain a serious public health issue, primarily affecting young males. Emphasis should be placed on road safety measures to reduce the frequency of these accidents.

关键词： ENT Injuries Road Accidents Regional Hospital of Mamou

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Analysing the Factors Affecting Prenatal Visits in Guinea: A Secondary Study of the 2018 Demographic and Health Survey (DHS)

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Open Journal of Obstetrics and Gynecology 2023年第8期13卷 1417-1431页

作者： Abdourahamane Diallo Almamy Amara Toure Aboubacar Sidiki Magassouba Diao cisse Younoussa Sylla ibrahima Barry Department of Gynaecology-Obstetrics Ignace Deen National Hospital Conakry Guinea Faculty of Health Sciences and Technologies Gamal Abdel Nasser University of Conakry Conakry Guinea National Center for Training and Research in Rural Health of Mafèrinyah Forécariah Guinea

Background: Despite persistent efforts to improve maternal health through various interventions, Guinea faces challenges in achieving adequate antenatal care coverage (ANC). This study aims to identify the key factors influencing prenatal consultation in Guinea. Methods: A secondary analysis was conducted on Guinea’s 2018 Demographic and Health Survey (DHS) data. The study sample comprised women aged 15 - 49 who participated in the survey. Logistic regression was employed to identify the determinants of ANC utilisation. Results: Most women in the sample (59.1%) were aged between 18 and 30, resided in rural areas (69.8%), had no formal education (71.0%), had low incomes (43.4%), were married (91.4%), relied on the radio for information (63.4%), and were employed at the time of the survey (68.0%). The study identified several factors acting as barriers to meeting the recommended four ANC visits, including low education levels, with odds ratios (OR) of 0.43 (p = 0.011) for those with no schooling and 0.48 (p = 0.046) for those with primary-level education. Lack of radio access also negatively influenced ANC utilisation with an OR of 0.72 (p = 0.012). Additionally, delayed timing of the first ANC visit in the second trimester had an OR of 0.36 (p 0.001), while in the third trimester, the OR was 0.04 (p 0.004). On the other hand, factors that facilitated achieving the recommended four ANC visits included having an average wealth quintile with an OR of 1.63 (p = 0.002) and being wealthy with an OR of 2.30 (p 0.001). Conclusion: This study underscores the negative association between low education level and poverty with ANC utilisation among pregnant women in Guinea. These findings emphasise the need for targeted interventions to address the barriers faced by vulnerable populations and improve maternal healthcare access and utilisation in the country.

关键词： Determinants ANC DHS Guinea

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Comparative Effect of Adding Synthetic Citric Acid to Natural Lemon Juice (Citrus aurantiifolia) on the Stability of Hibiscus Drinks Stored at 4°C and 37°C

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Food and Nutrition Sciences 2023年第6期14卷 495-508页

作者： Papa Guedel Faye ibrahima Diouf Medoune Gaye Sarr Oumou Hany Sourang Nicolas Cyrille Ayessou Mady cisse Water Energy Environment and Industrial Processes Laboratory (LE3PI) Polytechnic School of Dakar Chemical Engineering and Applied Biology Department Cheikh Anta Diop University Dakar Senegal Center for Studies on Food Security and Functional Molecules (CESAM) Dakar Senegal

The general objective of the work is to compare the effect of the addition of synthetic citric acid compared to the addition of natural fruit juice of Citrus aurantiifolia on the conservation of drink based on red chalice H. sabdariffa. The tests were carried out over a period of 5 weeks at 4°C and 37°C with seven batches of beverage samples prepared at the rate of a calyx/water ratio of 1/40 (kg·kg-1) and added respectively citric acid at 1, 2 and 4 g·L-1 and lemon juice at 10, 20 and 40 mL·L-1. The characterization of the different batches of beverages was carried out from day one. A follow-up of the residual anthocyanin content and the intensity of the red coloring were carried out over five weeks. The anthocyanin concentration was determined by the pH-differential method. The red color degradation index is determined based on the CIELAB color system (L*, a*, b* and L*). R and Minitab 18 software was used for data processing. The results of the monitoring of the parameters showed that the concentration of 1 g AC L-1 retains 2.7 mg more of the anthocyanins than adding 10 mL JC L-1 and longer maintains red color when stored at 4°C and 37°C/5 weeks. The 2 g AC L-1 and 4 g AC L-1 ratios have the same effects as the addition of 20 and 40 mL of lemon juice, all accelerating the degradation of anthocyanins and the red color. After 5 weeks of storage at 37°C, the effect of the temperature combined with the increase in the acidity of the samples (2 to 4 g AC L-1 and 20 to 40 ml JC L-1), have accelerated the total disappearance of the red color on all samples.

关键词： Stabilization Drink Citric Acid Citrus aurantiifolia Hibiscus sabdariffa Coloring

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A Study on an Extensive Hierarchical Model for Demand Forecasting of Automobile Components

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Journal of Management Science & Engineering Research 2021年第2期4卷 40-48页

作者： cisse Sory ibrahima Jianwu Xue Thierno Gueye School of Management Northwestern Polytechnical UniversityXi'an710072China School of Mechanical engineering Northwestern Polytechnical UniversityXi'an710072China

Demand forecasting and big data analytics in supply chain management are gaining *** is attributed to the wide range of big data analytics in supply chain management,in addition to demand forecasting,and behavioral *** this article,we studied the application of big data analytics forecasting in supply chain demand forecasting in the automotive parts industry to propose classifications of these applications,identify gaps,and provide ideas for future *** will then be classified and then applied in supply chain management such as neural networks,k-nearest neighbors,time series forecasting,clustering,regression analysis,support vector regression and support vector *** extensive hierarchical model for short-term auto parts demand assess-ment was employed to avoid the shortcomings of the earlier models and to close the gap that regarded mainly a single time *** concept of extensive relevance assessment was proposed,and subsequently methods to reflect the relevance of automotive demand factors were *** a wide range of skills,the factors and co-factors are expressed in the form of a correlation characteristic matrix to ensure the degree of influence of each factor on the demand for automotive ***,it is compared with the existing data and predicted the short-term historical *** result proved the predictive error is less than 6%,which supports the validity of the prediction *** research offers the basis for the macroeconomic regulation of the government and the production of auto parts manufacturers.

关键词： Demand forecasting Supply chain management Automobile components Algorithm Continuous time model Demand forecasting Supply chain management Automobile components Algorithm Continuous time model

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Risk factors for schistosomiasis in an urban area in northern Cote d’Ivoire

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Infectious Diseases of Poverty 2018年第1期7卷 460-471页

作者： Richard K.M’Bra Brama Kone Yapi G.Yapi Kigbafori D.Silue ibrahima Sy Danielle Vienneau Nagnin Soro Gueladio cisse Jurg Utzinger Unitede Formation et de Recherche des Sciences de la Terre et des Ressources Minieres Universite Felix Houphouet-Boigny01 BP V 34Abidjan 01Cpte d’Ivoire Centre Suisse de Recherches Scientifiques en Cpte d’Ivoire 01 BP 1303Abidjan 01Cote d’Ivoire Swiss Tropical and Public Health Institute P.O.BoxCH-4002BaselSwitzerland University of Basel P.O.BoxCH-4003BaselSwitzerland Institut de Gestion Agropastorale UniversitéPéléforo Gon CoulibalyBP 1328KorhogoCote d’Ivoire Centre d’Entomologie Medicale et Veterinaire Universite Alassane Ouattara27 BP 529Abidjan 27Cote d’Ivoire Unitede Formation et de Recherche Biosciences Universite Felix Houphouet-Boigny22 BP 522Abidjan 22Cote d’Ivoire Centre de Suivi Ecologique BP 15532DakarSenegal.

Background:Schistosomiasis is a water-based disease transmitted by trematodes belonging to the genus *** aim of this study was to assess the relationship between the prevalence of schistosomiasis and access to water,sanitation and hygiene(WASH)and environmental and socioeconomic factors in the city of Korhogo,northern Côte d'***:A cross-sectional study including 728 randomly selected households was conducted in Korhogo in March *** heads of the households were interviewed about access to WASH and environmental and socioeconomic *** children abed between 5 and 15 years living in the households were selected to provide stool and urine samples for parasitological diagnosis of Schistosoma mansoni and Schistosoma haematobium *** relationship between infection with *** and potential risk factors was analysed by a mixed logistic regression model with‘household’as a random *** ratio tests were used to identify factors that were significantly associated with a Schistosoma ***:The overall prevalence of schistosomiasis among school-aged children in Korhogo was 1.9%(45/2341)composed of 0.3%(3/1248)*** and 3.5%(42/1202)*** to the low prevalence of *** infection,risk factor analysis was limited to *** were 7.8 times more likely to be infected with *** than *** between 10 and 15 years of age were 3.8 times more likely to be infected than their younger counterparts aged 5-10 ***,living in a house further away from a water access point(odds ratio[OR]=0.29,95%confidence interval[CI]:0.13-0.70)and abstaining from swimming in open freshwater bodies(OR=0.16,95%CI:0.04-0.56)were significantly associated with decreased odds of *** *** socioeconomic status did not appear to influence the prevalence of ***:A strategy to reduce the incidence of schistosomiasis should focus on health education to change the b

关键词： Cote d’Ivoire Schistosomiasis School-aged children Urban agriculture Vulnerability index Water Sanitation and Hygiene(WASH)

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Influence of Beverage Consumption Made from Baobab Pulp (<i>Adansonia digitata L.</i>) on Postprandial Glycemia in Côte d’Ivoire

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Food and Nutrition Sciences 2021年第7期12卷 774-786页

作者： cisse ibrahima Akoa Essoma Edwige Flore Anin Atchibri Anin Louise Oulai Ali Laboratory of Industrial Processes of the Synthesis of the Environment and New Energies National Polytechnic Institute Félix Houphou&euml t-Boigny Yamoussoukro C&ocirc te d’Ivoire Laboratory of Biotechnology Department of Biosciences Félix Houphou&euml t-Boigny University Abidjan C&ocirc te d’Ivoire Laboratory of Nutrition and Food Safety Nangui Abrogoua University UFR STA Abidjan C&ocirc te d’Ivoire

The study’s aim was to assess the consumption influence of beverages from baobab pulp on postprandial blood sugar in Côte d’Ivoire. Thus, a consumer survey of baobab juice was carried out in the city of Abidjan. Beverages from baobab pulp collected in four localities of Côte d’Ivoire (Man, Boundiali, Bouake and Abidjan) were prepared. These beverages were consumed by 15 subjects over a period of 9 days to determine their glycemic index (GI), glycemic load (GL) and postprandial blood sugar. During the survey, baobab juice’s consumers’ respondents were composed more of females (53.3%) than males (46.7%). Baobab juice is generally consumed in the afternoon by 35% of respondents twice a week (34.5%). Among the preferred juices sold in Abidjan markets, baobab juice is ranked second by children (21.4%) and fourth by adults (13.4%). The results of the glycemic index (GI) and glycemic load (GL) showed that beverages made from baobab pulp with sugar from Abidjan had high glycemic index and glycemic load. On the other hand, beverages made from baobab pulp with sugar from three other localities showed medium values of GI and GL. However, the GI and GL of the baobab pulps without sugar of four localities are low. The consumption at the will of these beverages without added sugar may be useful for the prevention and control of diabetes. However, beverages made from pulp with added sugar should be consumed in moder

关键词： Baobab Juice Glycemic Index Glycemic Load Postprandial Blood Sugar

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