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Agricultural Sciences 2021年第4期12卷 406-413页

作者： Serferbe Signaboubo Mbakop Nya christelle Gapili Naoura Research Unit of Applied Botany University of Dschang Dschang Cameroon Chadian Institute of Agricultural Research for Development N’Djamena Chad

Good practice in post-harvest operations depends on the contamination of groundnuts (Arachis hypogaea) by mycotoxins. The objective of this study is to identify farmers’ practices that pose a risk to the post-harvest preservation of the fruits of Arachis hypogaea in the province of Mayo Kebbi Ouest. Data collection was carried out using a farmer survey sheet based on a questionnaire on drying and storage techniques and losses related to groundnut harvesting. The study revealed that the fruits of Arachis hypogaea are dried on the fields and stored in shells or pods in polyethylene bags. The latter can be kept for up to 6 months in the shop (44%), in the attic (25.3%), in living quarters (18.7%) and both in the attic and in houses (12%). The level of post-harvest losses is due on the one hand to post-harvest diseases (60%) and the presence of insects on the crops (32%) and on the other hand to the germination of seeds (8%) after the harvest due to heavy rains. This loss on a scale of 2% to 10% is 74.7% and 10% to 50% is 25.3%. Drying and storage techniques in these localities represent a risk of mycotoxin contamination of groundnuts. Raising farmers’ awareness of harvest management techniques to preserve the sanitary quality of groundnuts would be important.

关键词： Arachis hypogaea Post-Harvest Technique Drying Storage Mycotoxin

Development of a standardized in vitro approach to evaluate microphysical,chemical,and toxicological properties of combustion-derived fine and ultrafine particles

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Journal of Environmental Sciences 2022年第3期34卷 104-117页

作者： Ana Teresa Juarez-Facio Clement Castilla Cecile Corbiere Helene Lavanant Carlos Afonso Christophe Morin Nadine Merlet-Machour Laurence Chevalier Jean-Marie Vaugeois Jerome Yon christelle Monteil Normandie Univ UNIROUENUNICAEN ABTE76000 RouenFrance Normandie Univ UNIROUENINSA RouenCNRSCOBRA76000 RouenFrance Normandie Univ UNIROUENINSA RouenCNRSGPM-UMR663476000 RouenFrance Normandie Univ UNIROUENINSA RouenCNRSCORIA76000 RouenFrance

Ultrafine particles represent a growing concern in the public health community but their precise role in many illnesses is still unknown. This lack of knowledge is related to the experimental difficulty in linking their biological effects to their multiple properties, which are important determinants of toxicity. Our aim is to propose an interdisciplinary approach to study fine(FP) and ultrafine(UFP) particles, generated in a controlled manner using a mini CAST(Combustion Aerosol Standard) soot generator used with two different operating conditions(CAST1 and CAST3). The chemical characterization was performed by an untargeted analysis using ultra-high resolution mass spectrometry. In conjunction with this approach, subsequent analysis by gas chromatography–mass spectrometry(GC–MS) was performed to identify polycyclic aromatic hydrocarbons(PAH). CAST1 enabled the generation of FP with a predominance of small PAH molecules, and CAST3 enabled the generation of UFP, which presented higher numbers of carbon atoms corresponding to larger PAH molecules. Healthy normal human bronchial epithelial(NHBE) cells differentiated at the air-liquid interface(ALI) were directly exposed to these freshly emitted FP and UFP. Expression of MUC5AC, FOXJ1, OCLN and ZOI as well as microscopic observation confirmed the ciliated pseudostratified epithelial phenotype. Study of the mass deposition efficiency revealed a difference between the two operating conditions, probably due to the morphological differences between the two categories of particles. We demonstrated that only NHBE cells exposed to CAST3 particles induced upregulation in the gene expression of IL-8 and NQO1. This approach offers new perspectives to study FP and UFP with stable and controlled properties.

关键词： In vitro Air-liquid interface MiniCAST Fine and ultrafine particles Organic compounds OC/TC

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Asian Journal of Andrology 2008年第2期10卷 177-187页

作者： Khaled Hamden Dorothee Silandre christelle Delalande Abdefattah El Feki Serge Carreau Animal Ecophysiology Faculty of Sciences Sfax-3018 Tunisia USC 20061NRA- EA 2608 Biochemistry Caen-14032 France

Aim： To examine the effects on rat aging of caloric restriction （CR1） and undernutrition （CR2） on the body and on testicular weights, on two enzymatic antioxidants （superoxide dismutase and catalase）, on lipid peroxidation and on the expression of testicular aromatase and estrogen receptors （ER）. Methods： CR was initiated in 1-month-old rats and carried on until the age of 18 months. Results： In control and CR2 rats an age-related decrease of the aromatase and of ER （α and β） gene expression was observed; in parallel a diminution of testicular weights, and of the total number and motility of epididymal spermatozo was recorded. In addition, aging in control and CR2 rats was accompartied by a significant decrease in testicular superoxide dismutase, catalase activities, and an increase in lipid peroxidation level （thiobarbituric acid reactive substance）, associated with alterations of spermatogenesis. Conversely, caloric restriction-treatment exerted a protective effect and all the parameters were less affected by aging. Conclusion： These results indicate that during aging, a low caloric diet （not undernutrition） is beneficial for spermatogenesis and likely improves the protection of the cells via an increase of the cellular antioxidant defense system in which aromatase/ ER could play a role. （Asian J Andro12008 Mar; 10： 177-187）

关键词： aging low caloric diet rat testis aromatase estrogen receptors antioxidants

Natural Solar Drying and Charcoal Production by Pyrolysis of Empty Shells of Cocoa Pods Using a Carbonisation Stove Fitted with a Chimney

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Journal of Energy and Power Engineering 2023年第4期17卷 109-120页

作者： Siaka Touré Adjo christelle Ogo Modibo Sidibé Solar Energy Laboratory FHB University of Cocody22 BP 582 Abidjan 22Côte d’Ivoire

The world’s production of cocoa highly has grown since *** West Africa,the production reached about 3,000,000 tons in *** than 50%of the world’s production of cocoa comes nowadays from Côte d’Ivoire and Ghana and Côte d’Ivoire is the biggest *** harvesting,the empty shells,considered as non-useful wastes,are abandoned in the fields where they become a source of *** yields millions of tons of biomass that can be converted into charcoal,instead of being sources of *** the present work,the drying kinetics of the empty wet shells were ***,charcoal production by pyrolysis of those empty shells of cocoa pods was performed,using a carbonisation stove fitted with a *** study showed that the empty shells have a high moisture *** different phases of the drying were *** study compared the drying rates and the diffusion coefficients of a small sample and a big *** experiences of carbonisation of the empty shells were successfully carried *** the first experiment,the pyrolysis temperatures were recorded and the charcoal mass efficiency *** the second experiment,the temperatures were higher and the result was colored *** colorations disappeared after some hours.

关键词： Shells of cocoa pods solar drying diffusion coefficient charcoal production carbonisation stove.

Why do some people dislike cheese? The effect of culture on consumer food perception and preference.

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Why do some people dislike cheese? The effect of culture on ...

Levels of insecticide resistance to deltamethrin,malathion,and temephos,and associated mechanisms in Aedes aegypti mosquitoes from the Guadeloupe and Saint Martin islands(French West Indies)

首届中国食品感官科学学术研讨会暨《食品感官科学》课程建设研讨会

作者： Dominique Valentin christelle Chrea UMR CSG 5170 CNRS Inraand Université de Bourgogne

Understanding cross-cultural differences in food sensory perception and preference is essential for developing products for international ***,there as been very little research on this *** present two studies aiming at better understanding the effect of culture on consumer food perception and *** the first one we show that the effect of culture reflects different olfactory environments and food and cosmetic habits which in turn determine olfactory *** the second study we show that the effect of culture is mediated by the age of the respondents.

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Infectious Diseases of Poverty 2017年第1期6卷 339-353页

作者： Daniella Goindin christelle Delannay Andric Gelasse Cedric Ramdini Thierry Gaude Frederic Faucon Jean-Philippe David Joël Gustave Anubis Vega-Rua Florence Fouque Laboratory of Medical Entomology Unit Environment and HealthPasteur Institute of Guadeloupe97183 Les AbymesGuadeloupe Vector control Service Regional Health AgencyDothemareLes AbymesGuadeloupe Alpine Ecology Laboratory(LECA) CNRSUMR 55532233 rue de la piscine BP5338041 GrenobleCedex 9France University of Grenoble Alpes GrenobleFrance Environmental and Systems Biology(BEeSy) University of Grenoble AlpesGrenobleFrance Vector Environment and Society Unit Special Programme for Research and Training in Tropical Diseases(TDR)World Health Organization20Avenue AppiaCH-1211 Geneva 27Switzerland

Background:In the Guadeloupe and Saint Martin islands,Aedes aegypti mosquitoes are the only recognized vectors of dengue,chikungunya,and Zika *** around 40 years,malathion was used as a mosquito adulticide and temephos as a *** the European Union banned the use of these two insecticide molecules in the first decade of the 21st century,deltamethrin and Bacillus thuringiensis *** are the remaining adulticide and larvicide,respectively,used in *** order to improve the management of vector control activities in Guadeloupe and Saint Martin,we investigated *** resistance to and mechanisms associated with deltamethrin,malathion,and ***:*** mosquitoes were collected from six different localities of Guadeloupe and Saint *** were used for malathion and temephos bioassays,and adult mosquitoes for deltamethrin bioassays,following World Health Organization *** resistance(Kdr)genotyping for V1016I and F1534C mutations,and expression levels of eight enzymes involved in detoxification mechanisms were examined in comparison with the susceptible reference Bora Bora ***:Resistance ratios(RR50)calculated for *** larvae showed high resistance levels to temephos(from 8.9 to 33.1-fold)and low resistance levels to malathion(from 1.7 to 4.4-fold).Adult females displayed moderate resistance levels to deltamethrin regarding the time necessary to affect 50%of individuals,varying from 8.0 to *** investigations on adult mosquitoes showed high resistant allele frequencies for V1016I and F1534C(from 85 to 96%and from 90 to 98%,respectively),as well as an overexpression of the glutathione S-transferase gene,GSTe2,the carboxylesterase CCEae3a,and the cytochrome genes 014614,CYP6BB2,CYP6M11,and ***:*** populations from Guadeloupe and Saint Martin exhibit multiple resistance to organophosphates(temephos and malathion),and pyrethroids(deltamethrin

关键词： Aedes aegypti Mosquitoes Insecticide resistance Deltamethrin Malathion Temephos Guadeloupe Saint Martin

VOCs Destruction by Plasma Catalyst Coupling Using AL-KO PURE Air Purifier on Industrial Scale

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Journal of Materials Science and Chemical Engineering 2015年第6期3卷 19-26页

作者： Zixian Jia christelle Barakat Binjie Dong Antoine Rousseau Laboratoire de Physique des Plasmas Ecole Polytechnique UPMC Universite Paris Sud 11 CNRS Palaiseau France R & D Department of AL-KO Therm GmbH Jettingen-Scheppach Germany

We have investigated in this study the destruction of acetone and toluene with AL-KO PURE air purifier (AL-KO PURE) on industrial scale. In the case of acetone, 100% pollutant abatement is achieved with AL-KO PURE over more than 80 hours (the test duration time) at the high level concentration of 0.5 ppm (1187 μg/m3, about 7 times higher than the average living room level). This corresponds to 0.2 μmol/s with a flow rate of 38.42 m3/h. The regeneration of a saturated catalytic filter was also tested. When the catalytic filter of AL-KO PURE is fully saturated with acetone, a 100% acetone destruction efficiency can be achieved at 0.46 ppm concentration with 25% fan speed. Moreover the second pollutant, toluene, has been also studied. 100% toluene abatement also is achieved with AL-KO PURE over more than 80 hours (the test duration time) at the high level concentration of 0.2 ppm (811 μg/m3, 0.087 μmol/s with a flow rate of 38.42 m3/h). Finally, the availability for the simultaneous removal of both pollutants, acetone and toluene, has been also studied.

关键词： Indoor Air Plasma Technology VOCs Removal Plasma-Catalyst Coupling

AsiaBlight Is a Pan-Asian Network Focused on Uncovering *** Population Dynamics and Improving the Management of the Late Blight Threat in Asia

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AsiaBlight Is a Pan-Asian Network Focused on Uncovering *** ...

Epidemiology of School-Related Injuries in Belgium. A Better Knowledge for a Better Prevention

2019年中国马铃薯大会

作者： christelle Lasserre Alberto Maurer International Potato Center(CIP) CIP-China Center for Asia Pacific(CCCAP)

Potato is a staple food that is crucial to fight malnutrition and combat severe rural poverty in *** blight(LB)is a major constraint to production throughout the *** results in lower potato yields,higher production costs and intensive use of *** Asia has numerous researchers working on different aspects of LB,their efforts lack ***,currently there is no overall picture of the Asian Phytophthora *** population,which means that information regarding its most effective control measures is *** overcome these problems,AsiaBlight,a pan-Asian Late Blight scientific community and network,was initiated in *** initially focused on establishing a coarse-scale map of *** in the *** study,performed by David Cook(James Hutton Institute)and Louise Cook(Queen’s University),has shown that the aggressive genotype 132(Blue 13),already reported from China and India,is widespread across continental Asia and is present in Georgia,Nepal,Bangladesh and *** contrast,this same genotype was not detected in the *** populations of the islands of Asia which were *** these islands(Japan,Taiwan,Indonesia and the Philippines),distinct and disparate *** populations were *** in 2018,the CIP-China Center for Asia Pacific(CCCAP)has focused on implementing a self-sustaining AsiaBlight *** September 2018,CCCAP has had many discussions with LB stakeholders in different Asian countries,to better understand how the new AsiaBlight network can respond to the expectations of the *** main goals for AsiaBlight are to train and build capacity among LB stakeholders,increase understanding of LB,and improve LB management through information,enhanced communication and collaboration,more coordinated research,and the introduction of new LB management *** a network,AsiaBlight strives to involve scientists,farmers,the agrochemical industry,government officials

关键词： late blight AsiaBlight Phytophtora infestans plant pathogen fungicide

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Open Journal of Preventive Medicine 2014年第6期4卷 408-420页

作者： christelle Senterre Michèle Dramaix Alain Levêque Research Centre of Epidemiology Biostatistics and Clinical Research School of Public Health Université Libre de Bruxelles Brussels Belgium

The landmark Convention on the Rights of the Child states that children around the World have right to safe environment. In Belgium, as in many countries, children spend, on average, 4.5 weekdays at school, during nearly 8 hours per day. Studies have shown that, the risk of school-related injury exceeds the risk during leisure time. Literature reports that school accidents account for 10 to 30% of all accidents among pupils. Despite that, few papers treat of the school-related injuries. Consequently, based on 1540 accidents forms from an insurance company, injury places, mechanisms involved, body parts injured and nature of injuries were described. Head injuries, upper and lower limbs injuries were investigated in more details. Pearson’s chi-square test was used to assess the relationships between the variables and multivariate logistic regression models were used to study the three specific types of injuries cited above. Gender ratio (M/F) was equal to 1.6 with 25.9% of children under 6 years, 29.4% of 6 - 9 years, 26.9% of 10 - 12 years and 17.8% from 13 years or more. The major places of injuries were the playground (56.9%) and the physical education (19.7%). Falls were observed in 52.1% of cases and contacts were reported in 24.3%. The head injuries account for 40.6%, the upper limbs for 32.0% and the lower limbs injuries for 20.2%. The bruises and the scratches were observed in 23.8% and the wounds in 21.5%. Fractures were reported in 16.1%. In conclusion, having a routine access to the data from the insurance companies could be an important source of information for an injury surveillance system in which the school injuries will be included. Taking into account this data will require an awareness of all the concerned persons about the relevance of such a system and a harmonization of the accidental forms.

关键词： School-Related Injuries Injury Determinants Cross-Sectional Survey Epidemiology

Epigenomic revolution in autoimmune diseases

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World Journal of Immunology 2015年第2期5卷 62-67页

作者： christelle Le Dantec Wesley H Brooks Yves Renaudineau INSERM ESPRI ERI29/EA2216SFR ScInBioSLabEx IGO "Immunotherapy Graft Oncology"Innovative Medicines Initiative PRECISESADSRéseau épigénétique et réseau canaux ioniques du Cancéropole Grand OuestEuropean University of Brittany Department of Chemistry University of South Florida Laboratory of Immunology and Immuno- therapy Brest University Medical School Hospital

Autoimmunity is believed to develop when genetically predisposed individuals undergo epigenetic modifcations in response to environmental factors. Recent advances in the understanding of epigenetic mechanisms suggest, in autoimmune diseases, a multi-step process involving environmental factors （e.g. , drugs, stress） and endogenous factors （e.g. , cytokines, gender）, both leading to the deregulation of the epigenetic machinery （DNA methylation, histone modifications, miRNA）, that in turn specifically affects the immune system and/or the target organ（s）. Such effect is reinforced in those patients with risk variants mapping to epigenetically-controlled regulators of immune cells. As a consequence, autoreactive lymphocytes and autoantibodies are produced leading to the development of the autoimmune disease. Potential new therapeutic strategies and biomarkers are also addressed.

关键词： Autoimmunity Epigenetics Epigenetic drugs DNA methylation Immunology