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the Potential of Wacapou (Vouacapoua americana) Extracts to Develop New Biobased Protective Solutions for Low-Durability Wood Species

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Journal of Renewable Materials 2025年第1期13卷 79-100页

作者： Emma Kieny Kévin Candelier Louis Milhe Yannick Estevez Cyrielle Sophie Romain Lehnebach Jérémie Damay Daniela Florez Emeline houël Marie-France thévenon Julie Bossu CIRAD Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCNRSINRAEUniversitéde GuyaneKourou97379France CIRAD UPR BioWooEBMontpellierF-34398France BioWooEB Universitéde MontpellierCIRADMontpellierF-34398France CNRS Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCIRADINRAEUniversitéde GuyaneKourouGuyane Française97379France Sorbonne Université CNRSLaboratoire de Biodiversitéet Biotechnologies MicrobiennesLBBMObservatoire OcéanologiqueBanyuls-sur-Mer66650France

the valorization of Amazonian wood residues into active chemical compounds could be an eco-friendly,cost-effective and valuable way to develop wood preservative formulations to enhance the decay and termite resistance of low-durable wood ***(Vouacapoua americana.,Fabaceae)is a well-known Guianese wood spe-cies commonly used in local wood construction due to its outstanding natural durability,which results from the presence of a large panel of extractives *** addition,its industrial processing generates large amounts of *** residues were extracted by maceration using four different solvents(water/ethanol,ethyl acetate,hexane and dichloromethane/methanol),separately and *** yield of each extractive fraction was determined,and their chemical compositions were analyzed by Liquid Chromatography-mass Spectrometry(LC-MS).Ethyl acetate led to the highest extraction yield,and the active compounds were identiﬁed in the obtained extractive *** this sense,the fungicidal and termite-repellent properties of these extractives were then tested using a screening laboratory(with temperate and tropical microorganisms),according to the solution concentration(1%,2.5%,5%,8%and 10%).Finally,Virola michelii heckel wood samples(low durable species)were impregnated with the 8%concentration *** impregnated wood samples were then exposed to a soil bed *** results highlighted that the nature of the solvent used during wood maceration affects the con-tent of the obtained extractive ***-Performance Liquid Chromatography–high-Resolution mass Spectrometry(UhPLC-hRMS)analyses showed the inﬂuence of extraction parameters on the nature of the extracted *** extracts(from ethyl acetate maceration)showed good anti-fungal and anti-termite ***,the concentration in extractives had an impact on the anti-termite activity level for Reti-culitermesﬂavipes and Cryptotermes *** based on W

关键词： Anti-fungal and anti-termite activities conferred durability extractives French Guiana impregnation guianese species wood by-products

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Investigating Biological Relationships in Burkina Faso Using DNA Testing

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American Journal of Molecular Biology 2025年第1期15卷 97-109页

作者： Bapio Valérie Elvira Jean Télesphore Bazie Moussa Ouattara Serge théophile Soubeiga Abdou Azaque Zoure Prosper Bado Abel Sorgho Touwendpoulimdé Isabelle Kiendrebeogo Lassina Traore Soumaïla Sawadogo Luc Zongo théodora M. Zohoncon Florencia W. Djigma théophane Albert T. Yonli Mahamoudou Sanou Jacques Simpore Centre de Recherche Biomolculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Universit Joseph KI-ZERBO Unit de Formation en Sciences de la Vie et de la Terre Laboratoire de Biologie Molculaire et de Gntique (LABIOGENE) Ouagadougou Burkina Faso Centre National de la Recherche Scientifique et Technologique (CNRST) Institut de Recherche en Sciences de la Sant (IRSS) Ouagadougou Burkina Faso Faculty of health Sciences University Saint Thomas dAquin (USTA) Ouagadougou Burkina Faso Centre hospitalier Universitaire Pdiatrie Charles De Gaulle Universit Joseph Ki-Zerbo Ouagadougou Burkina Faso

DNA testing for biological relationships is becoming increasingly common in Burkina Faso. STR analysis remains the most reliable technique for resolving disputes or claims in court regarding biological relationships. this study aimed to establish the links of biological relationships between subjects by analyzing 21 STR loci. the participants were 14 individuals referred to CERBA by the Justice in 2022. Oral or blood samples were taken for each subject. DNA was extracted, and the analysis of DNA polymorphism by PowerPlex® 21 Kit (Part No. DC8902) was performed by capillary electrophoresis on the ABI PRISM 3130 sequencer. DNA profiles were compiled using the GeneMapper IDX software version 1.2. Of the fourteen subjects examined, twelve of these samples had complete genetic profiles, while the other two had partial and absent profiles. the results confirmed the inclusion of three cases of Paternity, one case of maternity, one case of a relationship of brotherhood, and the exclusion of one case of maternity and one case of a relationship of brotherhood. DNA tests improve the resolution of filiations, but they require ethical and cultural awareness and a strengthened legal framework to prevent and protect society.

关键词： DNA STR Identification Genetic Fingerprint Burkina Faso

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Evaluation of Diagnostic Performance of a Multiplex RT-qPCR Method for Detecting DENV Serotypes and ChIKV in Clinical Samples, Ouagadougou, Burkina Faso

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Journal of Biosciences and Medicines 2025年第1期13卷 13-20页

作者： Michel Kiréopori Gomgnimbou Louis Robert W. Belem Boukandou Passi L. Mongo Shoukrat O. T. Bello Armel Moumouni Sanou Albert théophane Yonli théodora Mahoukèdè Zohoncon Jacques Simpore Equipe Biologie Molculaire et Biotechnologies Laboratoire de Recherche Centre MURAZ Institut National de Sant Publique Bobo-Dioulasso Burkina Faso Centre dExcellence Africain en Innovations Biotechnologiques pour lElimination des Maladies Transmission Vectorielle (CEA/ITECh-MTV) Universit Nazi BONI Bobo-Dioulasso Burkina Faso Institut Suprieur des Sciences de la Sant (IN.S.SA) Universit Nazi BONI Bobo-Dioulasso Burkina Faso Centre de Recherche Biomolculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Laboratoire de Recherche sur les Maladies Infectieuses et Parasitaire (LR-MIP) Institut de Recherche en Science de la Sante Bobo-Dioulasso Burkina Faso Laboratoire de Biologie Molculaire et de Gntique (LABIOGENE) UFR/SVT Universit Joseph Ki-Zerbo Ouagadougou Burkina Faso Facult de Mdecine Universit Saint Thomas dAquin (USTA) Ouagadougou Burkina Faso

Introduction: Arbovirus diseases such as dengue and chikungunya threaten public health worldwide. Early and rapid diagnosis and surveillance of dengue virus (DENV) and chikungunya virus (ChIKV) infections are essential to the control of these diseases. In this study, we evaluate the diagnostic performance of our new in-house multiplex RT-qPCR method for detecting DENV serotypes and ChIKV in an external laboratory. Methodology: the evaluation study was conducted on 200 clinical samples of suspected patients for arbovirus disease infection, collected in Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), Ouagadougou, Burkina Faso. Our new multiplex RT-qPCR was compared to the commercial kit, the Zika, Dengue, and Chikungunya (ZDC) Real-Time PCR Assays kit (Bio-Rad, California, USA). Results and Conclusions: Among 200 samples, 21.5% (43/200) were DENV-positive by multiplex RT-qPCR, and 21.5% (43/200) were also DENV-positive by reference real-time RT-PCR. 157 (78.5%) samples tested negative for DENV by both tests (new mRT-qPCR and reference test). the sensitivity and specificity of mRT-qPCR were 100%. the DENV serotypes detected were DENV-1 60.5% (26/43) and DENV-3 39.5% (17/43). ChIKV was not detected in this study. Our new mRT-qPCR is sensitive, cost-effective, simple, and can be used in developing country laboratories.

关键词： Evaluation Multiplex RT-qPCR Dengue Virus Chikungunya Burkina Faso

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Vitamin B-reath easier:vitamin B6 derivatives reduce IL-33 to limit lung inflammation

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Cellular & Molecular Immunology 2023年第12期20卷 1527-1529页

作者： hēth R.Turnquist th.mas E.Starzl Transplantation Institute University of Pittsburgh School of MedicineDepartment of Immunologyand Department of SurgeryUniversity of Pittsburgh School of MedicinePittsburghPAUSA McGowan Institute for Regenerative Medicine University of PittsburghPittsburghPAUSA

It has been known for some time that low PLP blood levels are common in asthmatic patients,and supplementation with vitamin B6 may reduce the severity of asthma symptoms[12].In the current study,a comparison of PLP levels in the plasma of asthmatic patients(n=52)and healthy controls(n=58)confirmed lower PLP concentrations in asthmatic patients,which correlated with reduced lung function and increased circulating eosinophils,suggestive of increased type 2 *** several mouse models of acute lung inflammation,they confirmed that systemic or local administration of PLP reduced lung inflammation and eosinophil density,suggesting that PLP concentration may be directly controlling immune responses that lead to the development of allergic airway ***2s constitutively express ST2,and IL-33 profoundly promotes ILC2 expansion and secretion of IL-5 and IL-13 to mediate allergic reactions and support host defenses against parasitic *** reduces the number of type 2 innate lymphoid cells(ILC2s)and their expression of IL-5 and ***,diet-induced vitamin B6 deficiency in mice increased papain-induced lung inflammation,including increasing the proportion of IL5+and IL-13+*** authors revealed that PLP treatment decreased IL-33 levels in the bronchoalveolar lavage fluid(BALF)and lung and targeting IL-33 with an antibody during papain-induced lung inflammation did not reduce inflammation beyond that of PLP treatment *** important clue to the regulation of IL-33 was that PLP treatment did not modify IL-33 mRNA ***,pyridoxal(PL)treatment of a human alveolar basal epithelial cell line(A549)stably expressing full-length IL-33 with a hemagglutinin(hA)tag established that PL exposure potently decreased intracellular IL-33 protein *** researchers used this cell line to explore the underlying mechanisms and verified that PL conversion to PLP by pyridoxal kinase(PDXK)controlled the stability of *** with these data,th

关键词： vitamin inflammation inhibited

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Vulvovaginal Candidiasis: Profile of Antifungal Susceptibility Test of Candida Strains to Antifungal Drugs from 2018 to 2022, Ouagadougou, Burkina Faso

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Advances in Microbiology 2025年第1期15卷 58-69页

作者： Essi Etonam Dovo théodora Mahoukèdè Zohoncon Pegdwendé Abel Sorgho Estelle Ouedraogo Mamadou Baduon Prudence Gouti Marius Belemgnegre Paul Ouedraogo Jacques Simpore (Molecular Biology and Molecular Genetics Laboratory LABIOGENE) UFR SVT Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Saint Camille hospital of Ouagadougou (hOSCO) Ouagadougou Burkina Faso Faculty of health Sciences University Saint Thomas DAquin USTA Ouagadougou Burkina Faso

Background: Vulvovaginal candidiasis (VVC) is a common cause of significant morbidity, affecting millions of women worldwide. It is estimated that approximately 75%of women of childbearing age will have at least one episode of candidiasis in their lifetime. In the last decades, resistance to azoles has become a public health problem. Although studies on vulvovaginitis have been done, there is lack of VVC studies in our area. the aim of this study was to describe the etiological and resistance profiles of vulvovaginal candidiasis to standard antifungus at the Saint Camille hospital of Ouagadougou (hOSCO), Burkina Faso. Methods: We conducted a prospective study from January 2018 to December 2022. From vulvovaginal swabs, Candida species were identified using the ChromID® Candida Agar medium and the API® Candida gallery. Antifungal susceptibility testing was performed using Kirby-Bauer agar disk diffusion. Results: A total of 4789 women were sampled. the average age of sexually active women was 27.80+/−6.77 years, with extremes ranging from 15 to 64 years. Vaginal Candida infections accounted for 74.16% of the cases. the 20 - 29 age group was the most affected by vulvovaginal candidiasis. Pregnant women accounted for 28.76% of our study population. Women in the second (2nd) trimester of pregnancy had more Candida infections. Candida albicans was the most isolated species (55.12%), followed by Candida glabrata (27.64%), Candida tropicalis (6.91%), Candida famata (6.67%), Candida krusei (2.56%). All the Candida species isolated showed very high of resistance to Fluconazole (45.2%), Miconazole (23.7%) and Clotrimazole (45.7%). Conclusion: Species-specific antifungal results should always be considered to avoid antifungal resistance associated with vulvovaginal candidiasis. Identifying the causative species using vaginal fungal cultures can help guide therapy and improve outcomes for these patients.

关键词： Vulvovaginal Candidiasis Candida albicans Azole Resistance Burkina Faso

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A fouling suppression system in submerged membrane bioreactors using dielectrophoretic forces

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Journal of Environmental Sciences 2015年第3期27卷 139-145页

作者： Alaa h.hawari Fei Du Michael Baune Jorg thming Department of Civil and Architectural Engineering College of Engineering Qatar University Center of Environmental Research and Sustainable Technology University of Bremen

A novel method was developed to suppress membrane fouling in submerged membrane bioreactors. the method is based on the dielectrophoretic （DEP） motion of particles in an inhomogeneous electrical field. Using a real sample ofbiomass as feed, the fouling-suppression performance using DEP with different electrical field intensities （60-160 V） and different frequencies （50-1000 hz） was investigated. the fouling-suppression performance was found to relate closely with the intensity and frequency of the electrical field. A stronger electrical field was found to better recover the filtrate flux. this is because of a stronger DEP force acting on the biomass par[ides close to the membrane＇s surface. Above an intensity and frequency value of 130 V and 1 khz, respectively the permeate flux was reduced due to an electrothermal effect.

关键词： Submerged membrane bioreactor Dielectrophoresis Inhomogeneous electric field Fouling

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Lattice BGK Simulation of Multipolar Vortex Formation

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Advances in Applied Mathematics and Mechanics 2010年第5期2卷 533-544页

作者： Gábor házi Gábor Tóth theoretical thermohydraulics Group MTA KFKI Atomic Energy Research InstituteH-1525Konkoly Th29-33BudapestHungary Department of Physics and Chemistry Széchényi István UniversityH-9026Egyetem Tér 1GyörHungary

Analytical and numerical studies have shown that multipolar vortices can emerge in two-dimensional flow due to azimuthal normal mode perturbations of shielded *** has been found that mode 2 and 3 perturbations can lead to the formation of stable tripoles and quadrapoles,respectively,while higher order modes result in more complex unstable compound *** have used the lattice Boltzmann method to simulate the effect of azimuthal perturbations on shielded vortices at moderate Reynolds *** have found that azimuthal normal mode perturbations result in the formation of multipoles,which decay due to viscous *** could also observe that the outcome of such simulations is very sensitive to the displacement of perturbations above wavenumber-3 excitations,in spite of the significant viscosity we used.

关键词： Lattice Boltzmann method shielded vortex stability

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Influence of Fabric Parameters on Microstructure,Mechanical Properties and Failure Mechanisms in Carbon-Fibre Reinforced Composites

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Journal of Materials Science & Technology 2008年第6期24卷 953-959页

作者： B.Wielage D.Richter h.Mucha th.Lampke Chemnitz University of Technology Institute of Composite Materials and Surface TechnologyD-09107 ChemnitzGermany

the effects of fibre/matrix bonding, fabric density, fibre volume fraction and bundle size on microstructure, mechanical properties and failure mechanisms in carbon fibre reinforced composites （plastic and carbon matrix） have been investigated. the microstructure of unloaded and cracked samples was studied by optical microscopy and scanning electron microscopy （SEM）, respectively whereas the mechanical behaviour was examined by 3- point bending experiments. Exclusively one type of experimental resole type phenolic resin was applied. A strong fibre/matrix bonding, which is needed for high strength of carbon fibre reinforced plastic （CFRP） materials leads to severe composite damages during the pyrolysis resulting in low strength, brittle failure and a very low utilisation of the fibres strain to failure in C/C composites. Inherent fabric parameters such as an increasing fabric density or bundle size or a reduced fibre volume fraction introduce inhomogenities to the CFRP＇s microstructure. Results are lower strength and stiffness whereas the strain to failure increases or remains unchanged. Toughness is almost not affected. In C/C composites inhomogenities due to a reduced bundle size reduce strain to failure, strength, stiffness and toughness. Vice versa a declining fibre volume fraction leads to exactly the opposite behaviour. Increasing the fabric density （weight per unit area） causes similar effects as in CFRPs.

关键词： CFRPs C/C Fibre/matrix bonding Fabric density Fibre volume fraction Roving size Microstructure Failure behaviour

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Structural Characterization of Laser Bonded Sapphire Wafers Using a Titanium Absorber thin Film

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Journal of Materials Science & Technology 2015年第5期31卷 484-488页

作者： A.de Pablos-Martín S.Tismer th.hche Fraunhofer Institute for Mechanics of Materials IWM Walter-Hlse-Str.106120 HalleGermany

Two sapphire substrates were tightly bonded by irradiation with a 1064 nm nanosecond laser and using a sputtered 50 nm-titanium thin film as an absorbing *** laser irradiation,aluminum from the upper substrate is incorporated into the thin film,forming Ti-Al-O *** the irradiated region becomes transparent,the bond quality was evaluated by scanning acoustic microscopy.

关键词： Laser welding Absorbing film Sapphire wafer bondin

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动荡重塑的能源图景——对“十五五”时期国内外能源发展形势的若干判断

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国际石油经济 2025年第1期33卷 2-10页

作者： “15th Five-Year” planning and research team of CNPC Economics and Technology Research Institute 中国石油集团经济技术研究院“十五五”规划研究团队

“十五五”期间，世界将处于动荡变革期，大国博弈竞争升级，经济复苏进程曲折，产业链供应链重构。美国新一届政府对全球政治、经济、贸易、治理均将产生重大影响。但世界多极化的趋势和新一轮科技革命的浪潮，将带给我们一个持续重塑... 详细信息

“十五五”期间，世界将处于动荡变革期，大国博弈竞争升级，经济复苏进程曲折，产业链供应链重构。美国新一届政府对全球政治、经济、贸易、治理均将产生重大影响。但世界多极化的趋势和新一轮科技革命的浪潮，将带给我们一个持续重塑的能源新图景。中国的能源转型实践“蹄疾步稳”，加速建设新型能源体系，如期实现碳达峰承诺，将为推动全球能源转型、维护产业链供应链稳定和应对气候变化做出更大贡献。中国石油集团经济技术研究院“十五五”规划研究团队基于对地缘政治、经济、技术、国际合作、能源转型、油气市场和石油企业等方面的深入研究，形成了对“十五五”时期国内外能源发展形势的11个判断。

关键词：地缘政治能源转型油气市场新型能源体系新能源发展

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