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Obstacles to the Integrated Care of Children Aged 6 to 59 Months Suffering from Acute and Severe Malnutrition at the Chu-Me and HATC of N’Djamena/Chad

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Open Journal of Nursing 2024年第4期14卷 127-138页

作者： Madjiadoumbeye Romain Imar Djibrine Soudy Ministè re de la Sant&#233 Publique et de la Pr&#233vention (Tchad) N&#8217Djamena Tchad laboratoire de recherche en Sciences des Aliments et Nutrition Facult&#233 des Sciences de la Sant&#233 Humaine (FSSH) Universit&#233 de N&#8217Djamena N&#8217Djamena Tchad

Introduction: the problem of Severe Acute Malnutrition (SAM) and its consequences concern and challenge all social actors worldwide. The objective of the study was to identify the real obstacles that actors face in the integrated management of children aged 6 - 59 months suffering from SAM at the University Hospital of Mother and Child (CHUME) and the Chad-China Friendship Hospital (HATC) of N’Djamena. Methodology: this is a cross-sectional descriptive and interpretative study conducted from January to October 2023 at the CHUME and HATC of N’Djamena. It is based on questionnaires and direct observation of two hundred and thirty-six (236) parents or guardians of malnourished children admitted to these health facilities. All 236 agreed to participate freely in this study. Results: it appears from this study that the obstacles to the integrated management of malnourished children were: poor care-care relationship (26.7%) permanent product breaks (22.9%), the direct costs of services ranged from 30,000 to 60,000 FCFA (41.53%), drugs used for the treatment of patients came from the street (66.10%), malaria and anemia occupy an important place (27.5%), 57.2% respondents had monthly income below 60,000 CFAF. Conclusion: the present study carried out has identified the real bottlenecks to the integrated management of children suffering from SAM in the therapeutic nutritional units of the city of N’Djamena. .

关键词： Integrated Management Child 6 - 59 Months SAM

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Risk Factors for Cardiovascular Disease among Hotel Workers, Bohicon, Benin

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Occupational Diseases and environmental Medicine 2024年第2期12卷 130-141页

作者： Mênonli Adjobimey Rose Mikponhoué Eméline Gbaguidi Esdras Hountohotegbè Hélène Sacca Paul Ayélo Vikkey Antoine Hinson Unité de Recherche et d&#8217Enseignement en Sant&#233 au Travail et Environnement FSS Cotonou Cotonou Benin Service de Santé au Travail du Centre National Hospitalier Universitaire de Pneumo Phtisiologie de Cotonou Cotonou Benin laboratoire d’ Epid&#233miologie des Maladies Chroniques et Neurologiques FSS Cotonou Benin

Introduction: Non-communicable diseases (NCDs) are on the increase in several sectors of activity. The aim of the study was to determine the frequencies of cardiovascular risk factors (CVRF) and factors associated with hypertension among hotel workers in the city of Bohicon. Methods: This was a descriptive and analytical cross-sectional study conducted in the period from december 2018 to January 2019. The variables studied were sociodemographic, occupational, anthropometric and behavioral. Participant recruitment was exhaustive. A standardized questionnaire inspired by the STEPS-WHO questionnaire was used for data collection. After the descriptive analysis, a bivariate analysis was performed using Pearson’s Chi-square test or Fisher’s test at the 5% threshold. Results: A total of 101 workers, 53 (52.47%) of them male, participated in the study. The mean age was 30.60 ± 8.20 years, with extremes of 18 and 55 years. The frequencies of the main risk factors were: 68.32% sitting position > 6 hours/day;38.61% shift work;21.78% high psychological demand, 82.18% low decision latitude, 24.75% low social support, 21.78% occupational stress;7 (6.93%) harmful alcohol consumption;6.93% tobacco consumption;48.51% insufficient physical activity;98.02% insufficient fruit and vegetable consumption;59.41% overweight;14.85% HTA. Factors associated with hypertension were: sex, age and marital status. Conclusion: Occupational factors need to be taken into account when assessing CVRFs. NCD control programs are needed in all sectors of activity. A larger study is needed in the hotel sector.

关键词： FDRCV Occupational Factors Hypertension Hotels Benin

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New 4-imino-4H-Chromeno[2,3-d]Pyrimidin-3(5H)-Amine: Synthesis, Cytotoxic Effects on Tumoral Cell Lines and in Silico ADMet Properties

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International Journal of Organic Chemistry 2024年第3期14卷 107-122页

作者： Marwa Dhiabi Sirine Karoui Mehdi Fakhfakh Souhir Abid Emmanuelle Limanton Rémy Le Guével Thierry Charlier Ludovic Paquin Jean-Pierre Bazureau Houcine Ammar laboratoire de chimie Applique: Htrocycles Corps et Polymres Facult des Sciences de Sfax Universit de Sfax Sfax Tunisie Institut des Sciences Chimiques de Rennes Universit de Rennes Campus de Beaulieu Rennes Cedex France department of Chemistry (Science and Arts): Al Qurayat Al-Jouf University Al Jawf Saudi Arabia S2Wave Platform ScanMAT UAR CNRS Universit de Rennes Campus de Beaulieu Rennes Cedex France ImPACcell Platform Biosit SFR UMS CNRS Inserm Campus de Villejean Rennes France Institut de recherche en Sant Environnement et Travail IRSET Inserm UMR_S Rennes France

The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was established according to their spectroscopic analysis, such as FT-IR, NMR and mass spectroscopy. These new compounds were tested for their antiproliferative activities on seven representative human tumoral cell lines (Huh7 D12, Caco2, MDA-MB231, MDA-MB468, HCT116, PC3 and MCF7) and also on fibroblasts. Among them, only the compounds 6c showed micromolar cytotoxic activity on tumor cell lines (1.8 50 50 > 25 μM). Finally, in silico ADMet studies ware performed to investigate the possibility of using of the identified compound 6c as potential anti-tumor compound.

关键词： 2-Amino-4H-Chromene 4H-Chromeno[2 3-d]Pyrimidin-3(5H)-Amine Microwave Irradiation Tumoral Cell Line in Silico ADMet

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Prevalence and Factors Associated with Diabetes among City Hall Workers, Bohicon, Benin

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Open Journal of Epidemiology 2024年第2期14卷 366-377页

作者： Adjobimey Mênonli Djohoun Frimège Mama Cissé Ibrahim Mikponhoué Rose Gounongbé Fabien Ayélo Paul Hinson Vikkey Antoine Unité de Recherche et d&#8217Enseignement en Sant&#233 au Travail et Environnement FSS Cotonou Cotonou Benin Service de Santé au Travail du Centre National Hospitalier Universitaire de Pneumo-Phtisiologie de Cotonou Cotonou Benin laboratoire d’ Epid&#233miologie des Maladies Chroniques et Neurologiques FSS Cotonou Benin Ecole de Mé decine Universit&#233 de Parakou Parakou Benin

Introduction: Living and working conditions are increasingly conducive to a sedentary lifestyle. Many administrative workers are exposed daily to long hours of work in a prolonged sitting position, which can favour the onset of diabetes. The aim of the study was to determine the prevalence and factors associated with diabetes among workers at a town hall in Benin in 2019. Methods: This was a descriptive cross-sectional study conducted from december 2018 to January 2019. Exhaustive recruitment was carried out. Data were collected during a face-to-face interview, using a standardized questionnaire including socio-professional factors, behavioral factors, anthropometric measurements, and blood glucose. Frequencies were calculated. Frequencies were compared using the chi-square and Fisher tests. The significance threshold was 5%. Results: A total of 85 workers were included. Their mean age was 41.55 ± 9.82 years, with a sex ratio of 6.1. = The prevalence of diabetes was estimated at 8.2% [95% CI: 3.38 - 16.23%] and 3 of the workers knew they had diabetes. A family history of diabetes was associated with diabetes (p = 0.032). Occupationally, 10.77% of permanent employees had diabetes, compared with 0.0% of non-permanent employees;12.50% of employees with at least 10 years’ seniority had diabetes, compared with 7.25% of those with less seniority;19.05% of employees who spent at least 6 hours a day sitting at work had diabetes, compared with 4.69% of those who spent less time sitting. Conclusion: Preventing chronic disease in the workplace is part of promoting workers’ health, and must take into account occupational factors such as prolonged sitting.

关键词： Diabetes Prolonged Sitting Workers-Benin

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detection of Burned Areas through Spectral Indices Analysis of Sentinel-2A Satellite Images in the Abokouamékro Wildlife Reserve (Central, Côte D’Ivoire)

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Open Journal of Applied Sciences 2024年第1期14卷 205-222页

作者： Bob Kouakou Kouadio Sié Ouattara Alain Clément Jean-Marc Gala Bi Zaouri Jean-Luc Kouadio Kouassi Jean-Luc Edouard Kouakou N’guessan laboratoire des Sciences et Technologies de la Communication et de l’Information (LSTCI) Institut National Polytechnique Houphou&#235t Boigny (INP-HB) Yamoussoukro C&#244te d’Ivoire laboratoire des Sciences Agronomiques et Génie Rural Institut National Polytechnique Houphou&#235t Boigny (INPHB) Yamoussoukro C&#244te d’Ivoire Ecole de Géomatique et du Territoire (EGT) Abidjan C&#244te d’Ivoire LARIS SFR MATHSTIC Université d’Angers Angers France Centre Universitaire de recherche et d’application en Télédétection (CURAT) UFR des Sciences de la Terre et des Ressources Minières Abidjan C&#244te d’Ivoire laboratoire de Botanique UFR Biosciences Université Félix Houphou&#235t Boigny Abidjan C&#244te d’Ivoire

In Côte d’Ivoire, the recurring and unregulated use of bushfires, which cause ecological damage, presents a pressing concern for the custodians of protected areas. This study aims to enhance our comprehension of the dynamics of burnt areas within the Abokouamékro Wildlife Reserve (AWR) by employing the analysis of spectral indices derived from satellite imagery. The research methodology began with the calculation of mean indices and their corresponding spectral sub-indices, including NDVI, SAVI, NDWI, NDMI, BAI, NBR, TCW, TCG, and TCB, utilizing data from the Sentinel-2A satellite image dated January 17, 2022. Subsequently, a fuzzy classification model was applied to these various indices and sub-indices, guided by the degree of membership α, with the goal of effectively distinguishing between burned and unburned areas. Following the classification, the accuracies of the classified indices and sub-indices were validated using the coordinates of 100 data points collected within the AWR through GPS technology. The results revealed that the overall accuracy of all indices and sub-indices declines as the degree of membership α decreases from 1 to 0. Among the mean spectral indices, NDVI-mean, SAVI-mean, NDMI-mean exhibited the highest overall accuracies, achieving 97%, 95%, and 90%, respectively. These results closely mirrored those obtained by sub-indices using band 8 (NDVI-B8, SAVI-B8, and NDMI-B8), which yield respective overall accuracies of 93%, 92%, and 89%. At a degree of membership α = 1, the estimated burned areas for the most effective indices encompassed 2144.38 hectares for NDVI-mean, 1932.14 hectares for mean SAVI-mean, and 4947.13 hectares for mean NDMI-mean. A prospective approach involving the amalgamation of these three indices could have the potential to yield improved outcomes. This study could be a substantial contribution to the discrimination of bushfires in Côte d’Ivoire.

关键词： Spectral Indices Wildfire Burned Areas Abokouamékro Wildlife Reserve Côte D’Ivoire

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Immunoprophylaxis failure and vaccine response in infants born to mothers with chronic hepatitis B infection in Djibouti

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World Journal of Hepatology 2024年第7期16卷 1039-1050页

作者： Sahal Darar Dirir Ambroise D Ahouidi Aboubacry Drame Warsama Osman Abdi Guelleh Youssouf Kayad Mohamed Houmed Aboubakar Makhtar Camara Coumba Toure Kane Halimatou Diop Ndiaye laboratoire Medical de la Caisse National de SécuritéSocial de Djibouti Caisse National de SécuritéSocial de DjiboutiDjibouti BP 696Senegal Parasitology Institut de Recherche en santéde Surveillanceépidémiologique et de FormationDakar 7325Senegal Ecole Doctoral UniversitéAlioune Diop de BambeyDakar 7325Senegal department of des Soins Caisse National de Securite SocialDjibouti 696Senegal Centre de Soin Caisse National de Securite SocialDjibouti 696Senegal laboratoire Medical Mer Rouge Djibouti 99399Senegal Centre Hospitalier Universitaire Aristide le Dantec Laboratoire Bactériologie-Virologie-Hôpital Aristide le DantecDakar 7325Senegal department of Virology Institut de Recherche en Santéde Surveillanceépidémiologique et de FormationDakar 7325Senegal Bacteriology and Virology Laboratory Le Dantec University Teaching HospitalDakar BP 7325Senegal

BACKGROUND In endemic areas,vertical transmission of hepatitis B virus(HBV)remains a major source of the global reservoir of infected *** mother-to-child transmission(MTCT)of HBV is at the heart of World Health Organization’s goal of reducing the incidence of HBV in children to less than 0.1%by *** screening for hepatitis B during pregnancy and neonatal vaccination are the main preventive *** To evaluate the efficacy of HBV vaccination combined with one dose of immunoglobulin in children born to hepatitis B surface antigen(HBsAg)-positive mothers in Djibouti *** We conducted a study in a prospective cohort of HBsAg-positive pregnant women and their *** study ran from January 2021 to May 2022,and infants were followed up to 7 mo of *** serological markers and viral load in pregnant women were measured using aVidas microparticle enzyme-linked immunosorbent assay(Biomérieux,Paris,France)and the automated Amplix platform(Biosynex,Strasbourg,France).All infants received hepatitis B immunoglobulin and were vaccinated against HBV at *** infants were closely monitored to assess their seroprotective response and for failure of *** logistic regression was also used to identify risk factors associated with immunoprophylaxis failure and poor vaccine *** statistical analyses were performed with version 4.0.1 of the R *** Of the 50 pregnant women recruited,the median age was 31 years,ranging from 18 years to 41 *** MTCT rate in this cohort was 4%(2/50)in HBsAg-positive women and 67%(2/3)in hepatitis B e antigen-positive women with a viral load>200000 IU/*** the 48 infants who did not fail immunoprophylaxis,8(16%)became poor responders(anti-HB100 mIU/mL).Factors associated with this failure of immunoprophylaxis were maternal HBV DNA lev

关键词： Hepatitis B surface antigen Infants Hepatitis B immunoglobulin Hepatitis vaccine Djibouti

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Thermal Performance Analysis of Plaster Reinforced with Raffia Vinifera Particles for Use as Insulating Materials in Building

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Journal of Minerals and Materials Characterization and engineering 2024年第2期12卷 112-138页

作者： etienne Malbila Danielle Manuella Djouego Tagne Bouto Kossi Imbga Lareba Adelaide Ouedraogo Sié Kam David Yemboini Kader Toguyeni Ecole Supé rieure d&#8217Ing&#233nierie (ESI) Universit&#233 de Fada N&#8217Gourma Fada N&#8217Gourma Burkina Faso laboratoire d’ Energies Thermiques Renouvelables (LETRE) Universit&#233 Joseph KI-ZERBO Ouagadougou Burkina Faso Institut Supé rieur des Techniques Industrielles et Commerciales (ISTIC) Bangangt&#233 Cameroun Unité de Formation et de recherche en Sciences et Technologies (UFR/ST) Université Norbert ZONGO Koudougou Burkina Faso laboratoire de Physique et chimie de l’ Environnemen (LPCE) Universit&#233 Joseph KI-ZERBO Ouagadougou Burkina Faso Ecole Polytechnique de Ouagadougou (EPO) Ouagadougou Burkina Faso

The present study focuses on the formulation of new composite consisting of plaster and raffia vinifera particle (RVP) with the purpose to reducing energy consumption. The aim of this study is to test this new compound as an insulating eco-material in building in a tropical climate. The composites samples were developed by mixing plaster with raffia vinifera particles (RVP) using three different sizes (1.6 mm, 2.5 mm and 4 mm). The effects of four different RVP incorporations rates (i.e., 0wt%, 5wt%;10wt%;15wt%) on physical, thermal, mechanicals properties of the composites were investigated. In addition, the use of the raffia vinifera particles and plaster based composite material as building envelopes thermal insulation material is studied by the habitable cell thermal behavior instrumentation. The results indicate that the incorporation of raffia vinifera particle leads to improve the new composite physical, mechanical and thermal properties. And the parametric analysis reveals that the sampling rate and the size of raffia vinifera particles are the most decisive factor to impact these properties, and to decreases in the thermal conductivity which leads to an improvement to the thermal resistance and energy savings. The best improvement of plaster composite was obtained at the raffia vinifera particles size between 2.5 and 4.0 mm loading of 5wt% (C95P5R) with a good ratio of thermo-physical-mechanical properties. Additionally, the habitable cell experimental thermal behavior, with the new raffia vinifera particles and plaster-based composite as thermal insulating material for building walls, gives an average damping of 4°C and 5.8°C in the insulated house interior environment respectively for cold and hot cases compared to the outside environment and the uninsulated house interior environment. The current study highlights that this mixture gives the new composite thermal insulation properties applicable in the eco-construction of habitats in tropical environments

关键词： Fibres Plaster Thermal Test Mechanical Test Insulating Material Indoor Comfort

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Effect of Thermal Cycles on Creep Behavior of Bituminous Binder in Hot Regions

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Journal of Civil engineering and Architecture 2024年第7期18卷 334-339页

作者： Bachir Glaoui Mahdjoub Bendjima M'hamed Merbouh Martin Van de Ven laboratoire de la Fiabilité des Matériaux et Structures en Régions Sahariennes(FIMAS) Université de Béchar B.P.417Béchar08000Algérie Laboratory of Road and Railway engineering TU DelftP.O.Box 50482600 GA DelftThe Netherlands

This research is devoted to the study of creep behavior of asphalt binder in hot *** binder was subjected to thermal cycles due to the variation of temperature from day to *** cycles produce a heating-cooling *** evaluate the effect of climate change in laboratory,the DSR(dynamic shear rheometer)was used,and the results found with the nine samples were *** thermal cycles led to aging and therefore hardening of the ***,a rheological model was proposed that can represent the curves obtained experimentally,where it is able to describe the creep behavior of binders tested.A new model is proposed that correlates well with the experimental curves,which is called A+2 K.

关键词： Bitumen temperature heating/cooling DSR BBR model

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New Approach to Rock Classification Based on Sparse Representations

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Open Journal of Applied Sciences 2024年第1期14卷 145-158页

作者： Wognin Joseph Vangah Bi G. Théodore Toa Alico Nango Jerôme Ouattara Sie Alain Clément Unité de recherche et d’expertise Numérique (URen) Université Virtuelle de C&#244te d’Ivoire (UVCI) Abidjan C&#244te d’Ivoire UFR Sciences et technologique Département de Physique Université polytechnique de Man (UPM) Man C&#244te d’Ivoire Classe Préparatoire des Grandes Ecoles (CPGE) Université de San Pédro (USP) San Pédro C&#244te d’Ivoire Institut National Polytechnique Houphouë t (INPHB) Yamoussoukro C&#244te d’Ivoire laboratoire Angevin de recherche en Ingénierie des Systèmes (LARIS) Institut Universitaire de Technologie (IUT) Université d’Angers Angers France

In geology, classification and lithological recognition of rocks plays an important role in the area of oil and gas exploration, mineral exploration and geological analysis. In other fields of activity such as construction and decoration, this classification makes sense and fully plays its role. However, this classification is slow, approximate and subjective. Automatic classification curbs this subjectivity and fills this gap by offering methods that reflect human perception. We propose a new approach to rock classification based on direct-view images of rocks. The aim is to take advantage of feature extraction methods to estimate a rock dictionary. In this work, we have developed a classification method obtained by concatenating four (4) K-SVD variants into a single signature. This method is based on the K-SVD algorithm combined with four (4) feature extraction techniques: DCT, Gabor filters, D-ALBPCSF and G-ALBPCSF, resulting in the four (4) variants named K-Gabor, K-DCT, KD-ALBPCSF and KD-ALBPCSF respectively. In this work, we developed a classification method obtained by concatenating four (4) variants of K-SVD. The performance of our method was evaluated on the basis of performance indicators such as accuracy with other 96% success rate.

关键词： Rock Recognition Dictionary Signature Color Texture K-SVD Variants KD-ALBPCSF et KG-ALBPCSF

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NH_3 Plasma Surface Treatments of engineering Fluoropolymers: A Way to enhance Adhesion of Ni or Cu Thin Films deposited by Electroless Plating

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材料热处理学报 2004年第5B期25卷 1092-1097页

作者： Maurice Romand Marlene Charbonnier Yves Goepfert laboratoire de Sciences et Ingenierie des surfaces and Laboratoire de Sciences et Ingenierie des Surfaces andUMR 5180 des Sciences Analytiques Universite Claude Bernard - Lyon 1 69622 Villeurbanne Cedex France

This paper describes the electroless Ni or Cu plating of some fiuoropolymer substrates through a tin-free activation process. Materials subjected to surface metallization are commercial Teflon() FEP, Nafion(), ACLAR() and LaRCTM-CP1 thin films which have recently gained a large scientific and technological interest due to their excellent thermal, chemical, mechanical and dielectric properties. The original approach implemented in the present work involves: (i)the grafting of nitrogen-containing functionalities on the polymer surfaces through plasma treatments in ammonia, (ii) the direct catalysis of the so-modified surfaces via their immersion in a simple acidic PdCl2 solution (i.e. without using a prior surface sensitization in an acidic SnCl2 solution), and finally (iii) the electroless metallization itself. However, prior to the immersion in the industrial plating baths, the chemical reduction of the Pd+2 species (species covalently tethered on the nitrogen-containing groups) to metallic palladium (PdO) is shown to be a key factor in catalyzing the electroless deposition initiation. This is made by immersion in an hypophosphite (H2PO2-) solution. Wettability measurements and X-ray photoelectron spectroscopy (XPS) experiments are used to characterize every surface modification step of the developed process. A cross-hatch tape test was used to asses the adhesion strength of the electroless films that is shown qualitatively good. In addition, a fragmentation test was developed in combination with electrical measurements. Its use allows to distinguish different adhesion levels at the metal/polymer interface and to evidence the influence of some processing parameters.

关键词：镍化学镀层铜化学镀层等离子表面处理表面催化 XPS 剥离试验

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