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Evaluation of the Effect of Four Levels of Shade on the Growth and Development of Desmodium adscendens with a View to Its Domestication as a Cover Crop in Côte d’Ivoire

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Agricultural Sciences 2024年第11期15卷 1179-1194页

作者： Konan Didier Kouame Kouadio jacques-Edouard yao Koffi Fernand jean-Martial Kassi Kouadio Yann Henoc Kouadio Klinnanga Noël Kone Daouda Kone UFR Biosciences UPR Plant Physiology University Flix Houphout-Boigny Abidjan Cte dIvoire UFR Agroforestry UPR Plant Physiology University Jean Lorognon Gud Daloa Cte dIvoire UFR of Biological Sciences University Peleforo Gon Coulibaly Korhogo Cte dIvoire

Desmodium adscendens is a plant in the Fabaceae family that is very important to man, both agronomically and medicinally. It is an important cover crop that contributes to improving soil fertility, reducing the risks associated with crop pests and weeds. However, very little research has been carried out into its domestication for use as a cover crop in banana plantations in Côte d’Ivoire. The general objective of this study was to evaluate, under semi-controlled conditions, the effect of different levels of shade on the growth and development of Desmodium adscendens. The studies were carried out on the experimental site of the UP-Plant Physiology Laboratory. Four shading levels were evaluated: 0 (NO), 20% (N1), 40% (N2) and 60% (N3) light levels. The Desmodium adscendens cuttings used were collected from a 3-month nursery. For each treatment, 10 tubs containing sterilized soil were used, and 50 cuttings were planted. After planting, growth and development parameters were assessed weekly on 10 plants. In addition, yield and fresh and dry mass were measured. Finally, the reproductive cycle of Desmodium adscendens was determined. The results showed that plant growth and development were greatest in plants grown under the 40% shade level, followed by the 20% and 60% shade levels. In contrast, plants in full light showed poor growth and development. The 40% shade level was the most favorable for growing Desmodium adscendens cuttings, with a cycle length of 67 days. Growing Desmodium adscendens under shade with 20% and 40% light levels could be recommended to farmers.

关键词： Desmodium adscendens Shade Levels Cover Crops Domestication—Côte d’Ivoire

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十二烷基(6)聚氧乙烯醚分子泡沫双层的X射线反射

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科学通报 2003年第12期48卷 1295-1297页

作者：沈强 Benattar jean-jacques 李欣刘少杰山东大学胶体与界面化学教育部重点实验室 Service de Physique del’Etat Condense CEA/SaclayF-91191 Gif-sur-Yvette CedexFrance 'Servicede Physique de'Etat Condense CEA/SaclayF-91191 Gif-sur-Yvette CedexFrance

采用X射线反射法(X-ray reflectometry)测定了十二烷基(6)聚氧乙烯醚(C_(12)E_6)分子所形成的自由站立式(free-standing)泡沫双层的结构参数。结果表明:此双层膜中的疏水碳氢链区、极性头区和表面活性剂分子单层之间3个区域的厚度分别为... 详细信息

采用X射线反射法(X-ray reflectometry)测定了十二烷基(6)聚氧乙烯醚(C_(12)E_6)分子所形成的自由站立式(free-standing)泡沫双层的结构参数。结果表明:此双层膜中的疏水碳氢链区、极性头区和表面活性剂分子单层之间3个区域的厚度分别为0.90,1.35和1.31nm;电子密度分别为2.4×10^(-3),2.6×10^(-3)和2.3×10^(-3)电子数/nm^3;区域之间的界面粗糙度为0.34nm。泡沫双层中两极性头区之间不含自由水,而且其厚度在红外光线的照射下可变薄0.40nm;这可能是由于结构水被破坏所致。

关键词：十二烷基(6)聚氧乙烯醚牛顿黑膜 X射线反射泡沫膜离子性表面活性剂

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Assessment of Sediment and Pollutants in Buyo Lake, Ivory Coast, Using SWAT （Soil and Water Assessment Tool） Model

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Journal of Chemistry and Chemical Engineering 2013年第11期7卷 1054-1059页

作者： Tanoh jean-jacques Koua jean Patrice Jourda Kan jean Kouame Kouao Armand Anoh Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology Fdlix Houphouet-Boigny University ofCocody-Abidjan Abidjan 22522 Ivory Coast Environment and Mechanical Engineering Department "'Vasile Alecsandri'" University of Bacau Bacau 600015 Romania

The changes in land use in the last 30 years in the territory of agro-forest watershed of Lake Buyo resulted in significant sediment into the lake. Sediments are a preferred means of transportation for certain pollutants, like phosphorus in excess. By mapping the source areas of erosion, the authors can determine the risk areas and help to prioritize interventions in the territory. This mapping is done using the SWAT （soil and water assessment tool） model. Several types of data, including topography, land use, soil and climate data are needed to run the model. In this paper, all different steps are presented, from the designing of HRU （hydrological response units）, basic units to run the SWAT model until the simulations. The establishment of HRU has three main stages： space discretization, land use and soil data integration and HRU distribution：（1） space discretization which consist in extracting the limits and the water network of the watershed from the DEM （digital elevation model） and in subdividing them into sub-basins; （2） land use and soil data integration： it consists in digitizing the physical maps of land use and of soils under Mapinfo 7.5 and in keeping them in ＂shape＂ format; （3） HRU distribution： it leads to subdivide the sub-watersheds in small units that combine a single soil type and one type of land use. It appears from this study to obtain 23 sub-watersheds and 71 HRU. Once the HRU designed, it is necessary to integrate climate data, data on physico-chemical characteristics of soils and agricultural practices, before starting the simulations. This will allow the model to assess the risk of sedimentation and eutrophication of the lake using the MUSLE （modified universal soil loss equation） and phosphorus cycle.

关键词： Erosion land use SWAT model phosphorus sediment.

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Multiscattering-enhanced absorbance to enable the sensitive analysis of extremely diluted biological samples: Determination of oxidative potential in exhaled air

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Medicine in Novel Technology and Devices 2022年第2期14卷 62-66页

作者： Sami Goekce Nicolas Concha-Lozano jean-jacques Sauvain Maud Hemmendinger Alejandro Portela Elise Sergent Pascal Andujar jean-Claude Pairon Pascal Wild Guillaume Suarez Center for Primary Care and Public Health Lausanne UniversityLausanneSwitzerland Forensic Toxicology and Chemistry Unit CURMLLausanne University HospitalGeneva University HospitalsSwitzerland International University of Catalonia Bioengineering Institute of TechnologyBarcelonaSpain CHI Creteil Service Pathologies Professionnelles et de L’EnvironnementCreteilFrance Universite Paris-Est Creteil Faculte de SanteInstitut Sante Travail Paris-Est CreteilFrance Inserm U955 Team 4CreteilFrance INRS Scientific ManagementVandoeuvre Les NancyFrance

Direct determination of the oxidative potential in exhaled air(OPEA)as a biological indicator of the redox balance status in airways requires an extremely sensitive sensing approach to counterbalance the high dilution of the exhaled air *** opposite to standard colorimetric assays based on Beer-Lambert Law,the use of simple multiscattering-enhanced absorbance(MEA)strategy results in an improved photonic sensing *** on this strategy and using the ferrous-xylenol orange assay,analytical performances allowing the detection of 3 pmol of H_(2)O_(2) could be *** comparative analysis of photometric configurations–standard vs MEA–highlights the large absorbance gain obtained for tiny H_(2)O_(2) amounts–from 0 to 30 pmol–whereas similar sensing trends are observed at higher concentration *** automated introduction of exhaled air sample into the reaction compartment via needle-impinger coupled with the MEA-based photonic cell enables ultrasensitive determination of OPEA in short time(<5 min).A pilot study conducted on healthy subjects(n=22)and chronic obstructive pulmonary disease(COPD)patients(n=23)volunteers shows a significant increase of the OPEA for COPD versus controls and strong negative correlation between OPEA and spirometry parameters(Tiffeneau index:FEV1/FVC)for ex-/*** perspectives to assess inflammatory episodes in obstructive lung diseases are thus made possible using this sensing approach.

关键词： Absorbance enhancement Photonic device Oxidative potential Exhaled air COPD Pilot study

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Precise assembly and joining of silver nanowires in three dimensions for highly conductive composite structures

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International Journal of Extreme Manufacturing 2019年第2期1卷 88-102页

作者： Ying Liu Wei Xiong Da Wei Li yao Lu Xi Huang Huan Liu Li Sha Fan Lan Jiang jean-François Silvain Yong Feng Lu Department of Electrical and Computer Engineering University of Nebraska-LincolnLincolnNE 68588-0511United States of America Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology1037 Luoyu RoadWuhan 430074People’s Republic of China School of Mechanical Engineering Beijing Institute of TechnologyBeijing100081People’s Republic of China Institut de Chimie de la Matière Condensée de Bordeaux Avenue du Docteur Albert SchweitzerF-33608 Pessac CedexFrance

Three-dimensional(3D)electrically conductive micro/nanostructures are now a key component in a broad range of research and industry *** this work,a novel method is developed to realize metallic 3D micro/nanostructures with silver-thiol-acrylate composites via two-photon polymerization followed by femtosecond laser *** 3D micro/nanoscale conductive structures have been successfully fabricated with∼200 nm *** loading of silver nanowires(AgNWs)and joining of junctions successfully enhance the electrical conductivity of the composites from insulating to 92.9 Sm^−1 at room ***,for the first time,a reversible switching to a higher conductivity is observed,up to∼10^5Sm^−1 at 523 *** temperature-dependent conductivity of the composite is analyzed following the variable range hopping and thermal activation *** nanomaterial assembly and joining method demonstrated in this study pave a way towards a wide range of device applications,including 3D electronics,sensors,memristors,micro/nanoelectromechanical systems,and biomedical devices,etc.

关键词： precise assembly joining silver nanowires nanofabrication three dimensional

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利用手性N-氰乙基-2-羟基蒎烷-3-酮亚胺合成光学活性2-乙基环丙烷氨基酸

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高等学校化学学报 1998年第8期19卷 1256-1261页

作者：苏桂发广西师范大学化学化工系

以２－羟基蒎烷－３－酮（１）与氨基乙腈缩合得到的手性酮亚胺（２）为中间体，经去质子化，在Ｐｄ（０）催化下与１，４－二氯－２－丁烯（３）发生串联反应，得到光学活性环丙烷衍生物（４），产率约为７０％，反应的非对映立体选择... 详细信息

以２－羟基蒎烷－３－酮（１）与氨基乙腈缩合得到的手性酮亚胺（２）为中间体，经去质子化，在Ｐｄ（０）催化下与１，４－二氯－２－丁烯（３）发生串联反应，得到光学活性环丙烷衍生物（４），产率约为７０％，反应的非对映立体选择性（ｄ．ｅ．）为１００％．化合物４经选择性还原后水解，即可制得光学活性２－乙基环丙烷氨基酸，产物的对映体过量（ｅ．ｅ．）为３３％．

关键词：手性乙基环丙烷氨基酸羟基蒎烷酮合成

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华南早更新世巨猿动物群的ESR／U-系年代

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第四纪研究 2016年第5期36卷 1224-1235页

作者：邵庆丰韩非 jean—jacques Bahain 南京师范大学地理科学学院南京210023 中国地震局地质研究所地震动力学国家重点实验室北京100029 Departement de Prehistoire du Museum National d'Histoire Naturelle Paris 75013 France

华南的第四纪喀斯特洞穴堆积含有丰富的哺乳动物群化石，其中以步氏巨猿（Gigantopithecus blacki）为代表的巨猿动物群化石一直备受学术界关注。为建立巨猿动物群演化的绝对年代框架，本文采用牙化石ESR/U-系结合测年法测定重庆龙骨坡... 详细信息

华南的第四纪喀斯特洞穴堆积含有丰富的哺乳动物群化石，其中以步氏巨猿（Gigantopithecus blacki）为代表的巨猿动物群化石一直备受学术界关注。为建立巨猿动物群演化的绝对年代框架，本文采用牙化石ESR/U-系结合测年法测定重庆龙骨坡、广西田东吹风洞和么会洞以及广西崇左三合大洞动物群的地质年代。牙化石ESR/U-系结合测年法是将牙化石样品的ESR分析（古剂量和年剂量）与U-系分析（U-Th同位素）相结合用来模拟牙齿各个组织在地质时期的U-吸附过程，以计算牙组织中的U对古剂量的贡献，因此ESR/U-系年代比常规ESR年代更准确。本文测定了28个大型哺乳动物牙化石的ESR/U-系年代，结果表明龙骨坡动物群的地质年代为上新世晚期至早更新世早期，可限定为2.86~1.95Ma；吹风洞和么会洞动物群的地质年代在误差范围内一致，为1.97~1.38Ma；三合大洞动物群的地质年代为早更新世晚期至中更新世之初，约910~600ka。

关键词：早更新世巨猿动物群绝对年代牙化石 ESR/U-系结合测年法

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Reliability of the MPPT Control on the Energy Parameters of a Photovoltaic Generator

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World Journal of Engineering and Technology 2020年第3期8卷 537-550页

作者： Batassou Guilzia jeannot Mandeng jean jacques Mane Mane jeannot Laboratory of Computer and Automatic Engineering UFD of Engineering Sciences ENSET University of Douala Douala Cameroon University Institute of Technology UIT University of Douala Douala Cameroon

This article describes a technique that allows a photovoltaic (PV) production unit to obtain the maximum power at all times. Here, we use the MPPT control via fuzzy logic on a DC/DC boost-type converter. In order to achieve our goals, we first proceeded to model a PV panel. The resulting model offers the possibility to better account for the influence of different physical quantities such as temperature, irradiation, series resistance, shunt resistance and diode saturation current. Thus, the maximum power to be provided by the PV system is acquired by fuzzification and defuzzification of the input and output variables of the converter. Subsequently, a virtual model of an 800 Watt PV prototype is implemented in the Matlab environment. The simulation results obtained and presented, show the feasibility and efficiency of the proposed technology. Indeed, for a disturbance caused by a variation in brightness, our system guarantees the maximum stable power after 1.4 s. While for a load variation, the maximum power is continuous.

关键词： Low Voltage Photovoltaic System Fuzzy Logic Maximum Power Point

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Clinical Comparison of Pencil Beam Convolution and Clarkson Algorithms for Dose Calculation

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Journal of Cancer Therapy 2013年第10期4卷 1485-1489页

作者： Abdulhamid Chaikh jean-Yves Giraud jacques Balosso Joseph Fourier University Grenoble France

Purpose: The purpose of this work is to study and quantify the differences in calculated dose computed with two algorithms available in treatment planning systems: Pencil Beam Convolution and Clarkson. Material and Methods: Four different types of treatment cases were analyzed: lung, head and neck, brain and prostate. For each case, the volume definition was based on a clinical CT-scan acquisition. The patients were treated with 3-dimensional radiation therapy. For each patient, 2 treatment plans were generated using exactly the same configuration of beams. In plan 1 and plan 2, the dose was calculated using the Clarkson and Pencil Beam Convolution algorithms, respectively, without heterogeneity correction. To evaluate the treatment plans, the monitor units, isodose curves, dose volume histograms and quality index were compared. A statistical analysis was carried out using Wilcoxon signed rank test. Results: The difference observed for monitor unites was 1.2% for lung and less than 1% for head and neck, brain and prostate. Wilcoxon test showed that there was “no statically significant difference, (p > 0.05)”. The dosimetric parameters derived from dose volume histograms were higher for organs at risks using Clarkson compared to Pencil Beam Convolution algorithm inviting clinician to make “safer” prescriptions. For quality index there was no statistically significant difference between both algorithms for all quality indexes, (p > 0.05). Conclusion: The clinical evaluation of a treatment plan should be made regarding the calculation algorithm which, in turn, is linked to the experience of the clinician.

关键词： Treatment Planning Dose Distribution Isodose Monitor Unit PBC Clarkson

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Prevalence of the Functional Dyspepsia and Associated Factors in the Chronic Hemodialysis Patients of the National Teaching Hospital “HKM” of Cotonou

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Open Journal of Nephrology 2015年第1期5卷 14-24页

作者： jean jacques Sehonou jacques Vigan Bruno Léopold Agboton Gbètondji Michel Massi University Clinic of Internal Medicine of the National Teaching Hospital “Hubert K Maga” (CNHU-HKM) Cotonou Benin University Clinic of Nephrology and Hemodialysis of the National Teaching Hospital “HKM” of Cotonou Cotonou Benin

Aim: To study the functional dyspepsia in chronic hemodialysis patients of CNHU-HKM of Cotonou. Methods: This descriptive, analytical and cross-sectional study ran from 1 September 2013 to 28 February 2014 in the University Clinic of Nephrology Dialysis of CNHU-HKM of Cotonou. It included all chronic renal failure patients on hemodialysis for at least 9 months prior to the survey. After identifying the patients with upper gastrointestinal disorders, we had submitted to clinical Rome III criteria for functional dyspepsia. Upper endoscopy was performed in patients with clinical criteria of functional dyspepsia. Clinical factors associated, paraclinical and therapeutic were sought by logistic regression in univariate analysis. Data were analyzed using EPI DATA version 3.1. Results: 1) One hundred and thirty-one haemodialysis patients had participated in the study (sex ratio: 1.5, average age 49.6 ± 12.4 years). 2) The prevalence was 71.8% for upper gastrointestinal disorders, 64.9% for dyspeptic syndrome and 1.5% for functional dyspepsia. 3) They were associated to clinical criteria of functional dyspepsia of Roma III, the presence of high blood pressure, hypocalcaemia, treatment with calcic inhibitors and iron supplementation. Conclusion: Functional dyspepsia is uncommon in hemodialysis. The search of an organic cause is imperative for every dyspepsia.

关键词： Benin Chronic Haemodialysis Functional Dyspepsia Dyspepsia Upper Gastrointestinal Disorders

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