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Assessment of the Drafting Quality of Request Forms Submitted to the Malaria and Parasitology Units at the Institut Pasteur de Cote d’Ivoire

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Journal of Biosciences and Medicines 2024年第5期12卷 330-339页

作者： Yao Serge-stéphane Ako Ako Bérenger Aristide Sylvain Beourou Ouattara Yacouba N’Guessan Tiacoh Landry N’Dri Kouadio Thierry-Borel Toure André Offianan Malaria Unit Institut Pasteur de Cote d&#8217Ivoire Abidjan Cote d&#8217Ivoire Parasitology Unit Institut Pasteur de Cote d&#8217Ivoire Abidjan Cote d&#8217Ivoire

Biological tests provide information on the medical analysis requested by both the patient and the prescriber. It is a communication link between the prescriber and the laboratory staff. The lack of some information on request forms not only affects the drafting quality of the test and patient care, but could also make thousands of data produced by healthcare centers unusable. The aim of this study was to assess the drafting quality of request forms submitted to the Malaria and Parasitology Units at the Institut Pasteur de Côte d’Ivoire. Methods: It was a descriptive cross-sectional study to assess the drafting quality of request forms of various prescribers received at the Institut Pasteur de Côte d’Ivoire. This study was conducted at the Malaria and Parasitology Units, department of Parasitology and Mycology (Institut Pasteur de Côte d’Ivoire), from 6th December 2020 to 6th December 2021. The information on each request forms was recorded on a data collection form designed for this purpose. Each data collection form corresponds to a request forms and each test to a patient. Results: Out of a total of 1990 request forms received, the patient’s age and sex were missing on 18% and 26.8% of the tests respectively. More than half (51.80%) of request forms did not indicate the patient’s place of residence. Clinical information was not provided on 45.90% of the tests. Prescribers omitting their signatures were 51%, stamps were 50.3% and contacts were 71.2%. Only 5.4% of request forms were of good drafting quality. Providing all the required information on the forms could facilitate the use and analysis of data and samples.

关键词： Laboratory Quality Request Forms Information

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Mercury Levels Assessment in the Population of Aby and Frambo Villages in the Vinicity of Aby Lagoon in Côte d’Ivoire (West Africa)

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Journal of Water Resource and Protection 2024年第3期16卷 219-232页

作者： stéphane Jean Claon Serge Kouakou Kouassi Nina Laurette Ahouéfa Laurent Kipré Seri Arsène M’bassidjé Seka Joseph Allico Djaman Luc Kouakou Kouadio Analytical Sciences and Public Health Department University of Félix Houphou&eumlt-Boigny Abidjan C&ocircte d'Ivoire Water Quality Control and Analysis Laboratory (LACQUE) Office National de l’Eau Potable (ONEP) Abidjan C&ocircte d’Ivoire Biology and Health Laboratory University of Félix Houphou&eumlt-Boigny Abidjan C&ocircte d’Ivoire Laboratory of Nutrition and Food Safety Department of Science and Food Technology Nangui Abrogoua University Abidjan C&ocircte d'Ivoire Department of Medical and Fundamental Biochemistry Institut Pasteur of C&ocircte d'Ivoire Abidjan C&ocircte d’Ivoire Laboratory of Environmental Sciences (LSE) University of Nangui Abrogoua Abidjan C&ocircte d’Ivoire

The Minamata Convention in the aim to protect human life and the environment, seeks to reduce mercury (Hg) by monitoring it concentrations in the environment. Artisanal and Small-scale Gold Mining (ASGM) has been identified as the most important anthropogenic source of human exposure to Hg. In this context, the main goal of this study was to assess the level of mercury in hair of two (2) populations living along two lagoons respectively Aby and Tendo, in Ivory Coast. To reach this goal, hair samples of 138 residents were collected and analyzed by using Cold Vapor Atomic Fluorescence Spectrophotometry (CV-AFS) technique for mercury concentration. Results showed that for the entire population the Hg mean was 2.34 μg/g. Also, they were ranged between 0.15 to 8.53 μg/g and presented substantial differences amongst the villages. In Aby village, we observed the highest Hg concentrations (Mean = 2.62 μg/g). Our findings showed that almost the entire sample group (82%) exceed the USEPA recommended limit, furthermore 56% of them exceed the normal level of WHO and 2% of the respondent has the unhealthy levels of mercury (≥6 μg Hg/g) of hair by WHO standards. Gender differences in hair mercury varies greatly among reports. Lower levels in women’s hair compared to men were reported in the both village. Considering age, the lowest concentrations were observed with children. However, when we take in account the age groups, data suggested that the most exposed sub-population of [18-29] years old is from Aby village in opposite at Frambo village, the same case those who were ≥ 40 years old. It’s convenient to note that, the proportion of Mercury levels would not to be neglected among studied population especially with the resident from Aby village. So, some measures need to be taken at the political level to control mercury contamination.

关键词： Mercury Hair ASGM Population Exposure Côte d’Ivoire

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大陆俯冲界面之上大规模硅富集流体的地球物理学证据

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中国科学：地球科学 2024年第9期54卷 2848-2863页

作者：毛元彤赵亮 Marco G.MALUSÀ stefano SOLARINO Silvia PONDRELLI 孙宝璐 Coralie AUBERT Simone SALIMBENI Elena EVA stéphane GUILLOT 中国科学院地质与地球物理研究所岩石圈演化与环境演变全国重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049 Department of Earth and Environmental Sciences University of Milano-BicoccaMilan 20126Italy Istituto Nazionale di Geofisica e Vulcanologia Osservatorio Nazionale TerremotiGenova 16145Italy Istituto Nazionale di Geofisica e Vulcanologia Sezione di BolognaBologna 40127Italy UniversitéGrenoble Alpes UniversitéSavoie Mont BlancCNRSIRDUGEISTerreGrenoble 38000France

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地... 详细信息

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地球物理方法分析了西阿尔卑斯造山带地区的V_(P)/V_(S)比值,发现在俯冲区的上盘侧存在高V_(P)/V_(S)(>1.9)带,与部分蛇纹岩化的上覆地幔楔位置一致;而在下盘侧存在异常低的V_(P)/V_(S)(<1.7)带,异常深度浅于30km.本文认为,观测到的低V_(P)/V_(S)比值异常是由地壳内广泛分布的富硅岩脉导致,指示了在俯冲时期大陆俯冲界面之上可能存在的富硅流体流动.本文的结果暗示俯冲时期的流体流动可能降低了俯冲界面的有效应力,从而促进了大陆俯冲.

关键词：西阿尔卑斯造山带地壳精细结构接收函数 V_(P)/V_(S)波速比硅富集

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Assessment of Nitrates and Nitrites in Borehole Water from the Southern and the Northern Region of Côte d’Ivoire (West Africa)

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Open Journal of Modern Hydrology 2024年第2期14卷 87-105页

作者： Jean stéphane Claon Kouassi Kouakou Serge Sérikipré Laurent Seka M’Bassidjé Arsène N’Guettia Kossonou Roland Traoré Aïcha Djamanallico Joseph Kouadio Kouakou Luc Analytical Sciences and Public Health Department University of Félix Houphou&#235t-Boigny Abidjan C&#244te d’Ivoire Water Quality Control and Analysis Laboratory (LACQUE) Office National de l’Eau Potable (ONEP) Abidjan C&#244te d’Ivoire Biology and Health Laboratory University of Félix Houphou&#235t-Boigny Abidjan C&#244te d’Ivoire Department of Medical and Fundamental Biochemistry Institut Pasteur of C&#244te d’Ivoire Abidjan C&#244te d’Ivoire Laboratory of Environmental Sciences (LSE) University of Nangui Abrogoua Abidjan C&#244te d’Ivoire

This study aimed to evaluate the quality of water from village boreholes by measuring physicochemical parameters such as nitrates, nitrites, and total organic carbon (TOC). Forty-five (45) village pumps from the Southern (Basse Côte) and the Northern (Korhogo) region of Cte d’Ivoire (west Africa) were sampled. Physicochemical parameters such as temperature, pH, conductivity at 25˚C, and turbidity were determined in situ, while nitrite and nitrate were analyzed according to ISO 10304-1 (2007) standard and total organic carbon (TOC) by NF EN 1484 (1997) standard. The results showed that the borehole waters of the Basse Côte and Korhogo analyzed are acidic, with an average temperature of 27.51˚C ± 0.16˚C and 29.95˚C ± 0.51˚C respectively for the Basse Côte and Korhogo regions. The borehole waters of the Basse Côtedo not contain nitrites, while those of Korhogo have average nitrite contents of 0.32 mg/l. The average nitrate rate in the waters of the Basse Côte and Korhogo are 12.08 ± 2.11 mg/l and 11.03 ± 3.18 mg/l respectively. The average TOC concentration of the waters of the Basse Côte is 1.28 ± 0.32 mg/l and that of Korhogo is 0.56 ± 0.09 mg/L. The study showed that the borehole waters of the Basse Côte and Korhogo have average temperatures between 27.4˚C and 29.95˚C with a slightly acidic pH value and acceptable salinity. The TOC concentrations obtained at the different sampling points were all below the French standard (2 mg/L) except for certains pumps of the Basse Côte. The water samples from the Basse Côte were devoid of nitrite. On the other hand, those from Korhogo revealed the presence of nitrite. Also, the borehole waters of the regions of the Basse Côte and Korhogo contain relatively high nitrate contents, presumably due to anthropometric activity. Overall, our study on the quality of drinking water showed that the waters analyzed are in compliance with international standards and safe for consumption.

关键词： Drinking Water pH Turbidity TOC Nitrates Nitrites Health Effect

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statistical physics in QCD evolution towards high energies

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Science China(Physics,Mechanics & Astronomy) 2015年第8期58卷 1-32页

作者： MUNIER stphane Centre de physique thorique ′Ecole PolytechniqueCNRS Palaiseau France

The concepts and methods used for the study of disordered systems have proven useful in the analysis of the evolution equations of quantum chromodynamics in the high-energy regime: Indeed, parton branching in the semi-classical approximation relevant at high energies and at a fixed impact parameter is a peculiar branching-diffusion process, and parton branching supplemented by saturation effects(such as gluon recombination) is a reaction-diffusion process. In this review article, we first introduce the basic concepts in the context of simple toy models, we study the properties of the latter, and show how the results obtained for the simple models may be taken over to quantum chromodynamics.

关键词： quantum chromodynamics color dipole model color glass condensate stochastic fronts traveling waves reaction-diffusion

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Comparative study of abrasion via microindentation and microscratch tests of reinforced and unreinforced lamellar cast iron

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Friction 2019年第5期7卷 457-465页

作者： Mohammed MENDAS stéphane BENAYOUN Laboratory of Rheology and Mechanics(LRM) Hassiba Benbouali University of ChlefHay Essalem Chlef BP151(02000)Algeria LTDS UMR CNRS5513Ecole Centrale de LyonUniversity of LyonEcully Cedex F-69134France

This study compares micro-abrasive wear in two kinds of grey cast iron. Classical lamellar cast iron with fully pearlitic matrix(FGL1) and lamellar micro-alloyed cast iron with phosphorus and boron(FGL2) are used. FGL2 has a fully pearlitic matrix reinforced by the hard phosphorus eutectic phase. The microstructures of these two types of iron are mechanically characterized using nanoindentation tests. Vickers microindentation and microscratch tests are also performed on these iron samples. The indent and scratch images obtained via scanning electron microscopy were used to compare the scratch damage to the two kinds of iron. The friction coefficient is discussed in terms of applied load, indenter attack angle, and scratch damage. Nanoindentation tests show an improvement in graphite’s mechanical properties and an increase in the matrix hardness of the FGL2, relatively to FGL1. The same damage forms for both microindentation and microscratch testing were observed for the two iron samples. However, cracking of the hard phase is observed in FGL2. The results show that the scratching of the micro-alloyed iron(FGL2) leads to less matrix damage and to an extended microploughing wear mechanism. However, at low normal load, the reinforcement of the matrix can increase the friction coefficient.

关键词： grey cast iron indentation microscratch abrasive wear

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Women Breast Cancer: Knowledge, Attitudes, Practices and Factors Associated with Early Screening in the Municipality of Abomey-Calavi in Benin in 2018

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Open Journal of Epidemiology 2024年第1期14卷 131-156页

作者： stéphane Arold Bidossessi Senahoun Nicolas Hamondji Amegan Mahougnon Hugues Serge Dohou Hermann Comlanvi Agbedjinou Lucresse Corine Fassinou Tècle Edwige Korogone Armand Ibikounle Dieudonné Fambo Joël Gamêlé Mikponhoué Christiane Tshabu Aguemon Ecole Doctorale des Sciences de la Santé Université d’Abomey-Calavi Cotonou Bénin Ecole de Santé Publique de l’Université de Montréal Québec Canada Unité de Formation et de Recherche en Médecine Cardiovasculaire Faculté de Médecine de l’Université de Parakou Parakou Bénin Ecole de Santé Publique Université Libre de Bruxelles Bruxelles Belgique Ecole Nationale des Techniciens Supérieurs en Santé Publique et en Surveillance Epidémiologique Université de Parakou Parakou Bénin Faculté des Sciences de la Santé Université d’Abomey-Calavi Cotonou Bénin

Background: Breast cancer is the dominant cancer in women in both developed and developing countries. The objective of this study was to assess the knowledge, attitudes, practices and factors associated with early breast cancer screening among women in the Municipality of Abomey-Calavi in Benin. Methods: This was a cross-sectional, descriptive, analytical study with prospective data collection from October 1 to 8, 2018, involving 1740 women in the Municipality of Abomey-Calavi, aged 18 years or older and selected by WHO four-stage random cluster sampling. Consenting women who were mentally competent, 18 years of age or older at the time of the survey, and residing continuously in the Municipality of Abomey-Calavi for the last six months prior to the survey were included. On the other hand, women who belonged to a breast cancer prevention service, women in whom secondary screening was noted, or non-consenting women were not included. The initial minimum size was estimated by the Schwartz formula with a cluster effect of k = 2. Information was collected by questionnaire survey, entered with Epidata 3.1. Fr and analyzed with R studio 3.5.1. software. Results: The mean age of the women surveyed was 32.0 ± 11.5 years with a range of 18 and 71 years. Regarding knowledge, the clinical manifestation known by the majority of women was the presence of a nodule (68.50%). In the series, 1308 (75.17%) declared having heard about breast cancer once before, either on the radio, television or from friends and 726 (55.50%) had heard about breast cancer screening. Five hundred and twelve (70.52%) of the 726 who had heard of breast cancer said they knew that breast cancer could be screened earlier. Breast self-examination was the most cited screening method (67.58%). The disease is of natural origin according to 37.84% of them. Regarding attitudes and practices, the prevalence of early breast cancer screening was 12.93%, of which 11.67% declared that they had checked themselves to kno

关键词： Breast Cancer Early Screening Knowledge Practices Attitudes Associated Factors

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Effectiveness of chemical inactivation of infectious liquid biological waste:A randomized sample study of research laboratories in Switzerland

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Journal of Biosafety and Biosecurity 2024年第1期6卷 16-26页

作者： Alina CTeuscher Charlotte Ruhnau Nicole stöcklin Fabienne Wichmann Evelyn Ilg Hampe Claudia Bagutti state Laboratory Basel-City Biosafety LaboratoryBaselSwitzerland Novatis Lichtstrasse 354056 BaselSwitzerland1 IQVIA AG Kirschgartenstrasse 144051 BaselSwitzerland1 Becton Dickinson AG Binningerstrasse 944123 AllschwilSwitzerland1

Laboratory wastewater has been suggested as an important escape route for microorganisms from research *** reasons for the unintentional release of laboratory organisms are shortcomings in the handling of infectious liquid biological waste(LBW)and inadequate inactivation *** developed an analytical approach to investigate the use of chemical inactivation(CI)procedures in Swiss research laboratories by on-site random sampling of presumably inactivated infectious LBW and testing it for the presence of infectious lentiviruses(HIV-1)and adenoviruses(AdV).In addition,standard operating procedures(SOPs)for CI were collected and evaluated,and laboratorystaff knowledge of CI processes was assessed using a *** we found several deficiencies in the technical knowledge and training of laboratory staff on the CI of LBW,as documented by 27 returned questionnaires,no infectious viruses were detected in the eight LBW samples *** we acknowledge that the number of LBW samples and SOPs is small,we conclude that CI of LBW containing infectious lentiviruses and adenoviruses does not result in the systematic release of considerable amounts of infectious viruses into the environment from research laboratories in Switzerland.

关键词： Chemical inactivation Infectious liquid biological waste Lentivirus(HIV-1) Adenovirus

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Solar chemical looping reforming of methane combined with isothermal H2O/CO2 splitting using ceria oxygen carrier for syngas production

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Journal of Energy Chemistry 2020年第2期29卷 60-72页

作者： Srirat Chuayboon stéphane Abanades Sylvain Rodat Processes Materials and Solar Energy LaboratoryPROMES-CNRSFont-Romeu 66120France Department of Mechanical Engineering King Mongkut's Institute of Technology LadkrabangPrince of Chumphon CampusChumphon 86160Thailand Universite Grenoble Alpes Le-Bourget-du-Lac F-73375France CEA-LJTEN Laboratoire des Systemes Solaires Haute Temperature(LSHT) Grenoble F-38054France

The chemical looping reforming of methane through the nonstoichiometric ceria redox cycle(CeO2/CeO2-δ) has been experimentally investigated in a directly irradiated solar reactor to convert both solar energy and methane to syngas in the temperature range 900–1050 °C. Experiments were carried out with different ceria shapes via two-step redox cycling composed of endothermic partial reduction of ceria with methane and complete exothermic re-oxidation of reduced ceria with H2 O/CO2 at the same operating temperature, thereby demonstrating the capability to operate the cycle isothermally. A parametric study considering different ceria macrostructure variants(ceria packed powder, ceria packed powder mixed with inert Al2 O3 particles, and ceria reticulated porous foam) and operating parameters(methane flow-rate, reduction temperature, or sintering temperature) was conducted in order to unravel their impact on the bed-averaged oxygen non-stoichiometry(δ), syngas yield, methane conversion, and solar reactor performance. The ceria cycling stability was also experimentally investigated to demonstrate repeatable syngas production by alternating the flow between CH4 and H2 O(or CO2). A decrease in sintering temperature of the ceria foam was beneficial for increasing syngas selectivity, methane conversion,and reactor performance. Increasing both CH4 concentration and reduction temperature enhanced δ with the maximum value up to 0.41 but concomitantly favored CH4 cracking reaction. The ceria reticulated porous foam showed better performance in terms of effective heat transfer, due to volumetric absorption of concentrated solar radiation and uniform heating with lower solar power consumption, thereby promoting the solar-to-fuel energy conversion efficiency that reached up to 5.60%. The energy upgrade factor achieved during cycle was up to 1.19. stable patterns in the δ and syngas yield for consecutive cycles with the ceria foam validated material performance stability.

关键词： Chemical looping Methane reforming Ceria structure Concentrated solar power Syngas production H2O/CO2 splitting

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Detection of ARV-Resistant Mutants in HIV-1-Infected Individuals in a Context of Systematic Switching to an Association Based on Dolutegravir in Abidjan, Côte d’Ivoire

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American Journal of Molecular Biology 2024年第3期14卷 138-151页

作者： Odegue Kpadraux Danielle Kakou-Ngazoa Solange Dechi Jean-Jacques Renaud Diallo Zelica Sina Kouamé Mireille Sylla Aboubacar Tossea Koui stéphane Kouakou Venance Adagba Marius Apia N’Chouo Kouamé Basile Touré Offianan André Dosso Mireille Molecular Biology Platform Institut Pasteur Abidjan Cte dIvoire Laboratory of the Regional Blood Transfusion Center Yamoussoukro Cte dIvoire Department of Infectious and Tropical Diseases University Hospital Treichville Abidjan Cte dIvoire Laboratory of the Regional Blood Transfusion Center San-Pdro Cte dIvoire Department of Epidemic Virus Institut Pasteur Abidjan Cte dIvoire Department of Parasitology Mycology Institut Pasteur Abidjan Cte dIvoire Department of Bacteriology-Virology Institut Pasteur Abidjan Cte dIvoire

The emergence of antiretroviral resistance mutations represents a major threat to the achievement of national and global goals for the elimination of HIV-1 infection. The global strategy in 2019 in Cte d'Ivoire is a new national policy for the management of people living with HIV with the administration of dolutegravir (DTG)-based fixed-dose combination. The aim of our study was to evaluate HIV-1 resistance to antiretrovirals (ARVs) in infected adult subjects in Cte d’Ivoire in the context of a systematic switch to a DTG-based combination. Between February 2022 and October 2023, a cross-sectional survey with random sampling was conducted in 06 services caring for people living with HIV. A total of 139 participants were included in the study. Adults with a viral load ≥ 1000 copies/mL were tested for HIV-1 ARV resistance mutations. Molecular analyses were performed using protocol of ANRS-MIE (National Agency for Research on AIDS and emerging infectious diseases). The interpretation is performed by HIVGRAD (https://***/cms/grade/). The frequencies of HIV-1 resistance to non-nucleotide reverse transcriptase inhibitors (NNRTIs), nucleotide reverse transcriptase inhibitors (NRTIs), integrase inhibitors (IINTs) and protease inhibitors (PIs) were 82%, 73%, 19% and 11% respectively. The main mutations observed in the different classes were K103N (45%), M184V (64%), E157Q (19%) and L10V/M46I/A71V/I54V (6%) respectively. This study reveals the emergence of resistance to DTG-based fixed-dose combinations, favored by high rates of resistance to NRTIs and NNRTIs. This finding underlines the need for enhanced viral load monitoring and HIV-1 genotyping tests to guide the choice of NRTIs for combination therapy. In addition, monitoring for mutations to second-generation NRTIs is essential, given the scale-up of DTG-based regimens currently underway in Cte d’Ivoire.

关键词： Resistant Mutants Dolutegravir HIV-1 Antiretrovirals Côte d’Ivoire

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