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Estimation of the Actual Evapotranspiration by the SEBAL Method in the Irrigated Rice Perimeter of Zatta (Yamoussoukro—Côte d’Ivoire)

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Journal of Water Resource and Protection 2023年第10期15卷 539-556页

作者： Junias Léandre Kra Moïse Botou Adahi Brice Arthur konan-Waidhet jean-yves konan n’guessan Joël Doyéré Koné Emmanuel nogbou Assidjo Department of Geosciences and Environment Université Jean Lorougnon Guédé (UJLoG) Daloa C&ocircte d’Ivoire Department of Rural Engineering and Geographical Sciences Institut National Polytechnique Félix Houphou&eumlt-Boigny (INP-HB) Yamoussoukro C&ocircte d’Ivoire Department of Chemical and Food Engineering Institut National Polytechnique Félix Houphou&eumlt-Boigny (INP-HB) Yamoussoukro C&ocircte d’Ivoire

In this study, the SEBAL (Surface Energy Balance Algorithm for Land) model was used to map the spatio-temporal distribution of actual evapotranspiration in the Yamoussoukro department (Côte d’Ivoire). Like other regions of the country, the Yamoussoukro district is confronted with the phenomenon of evapotranspiration (ET). This is a very important component that comes into play in the water balance but also in the calculation of the water needs of agricultural crops. Consequently, its estimation is of paramount importance in research related to the rational management of water resources, particularly agricultural water. The objective of this study was to analyze the spatio-temporal distribution of actual evapotranspiration (AET) as a function of land cover and land use. The methodology used is based on the SEBAL model which uses remote sensing (Landsat 8_OLI/TIRS) and climatic data to estimate actual evapotranspiration and analyze the spatio-temporal distribution of AET. The results reveal that the AET varied from 0 to 5.44 mm/day over the period from December 2019 to February 2020 with an average value of 4.92 mm/day. The highest average values occurred for water bodies (4.90 mm/day) and flooded vegetation (4.88 mm/day) while the lowest values occurred in residential areas (2.04 mm/day). Furthermore, the results show that the difference between the SEBAL model and the FAO-Penman-Monteith method is minimal with an average RMSE of 0.36 mm/day for all the satellite images. This study demonstrates the considerable potential of remote sensing for the characterization and estimation of spatial evapotranspiration in the Zatta irrigated rice-growing area.

关键词： Evapotranspiration Water Balance Rational Management Remote Sensing SEBAL Model

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Evaluation of Particle Properties of MgO/TiO₂ Material by Monte Carlo Simulation Method

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Journal of Materials Science and Chemical Engineering 2024年第2期12卷 49-60页

作者： Koffi n’guessan Placide Gabin Allangba yves Kily Hervé Fagnidi Hermann n’guessan Zié Traoré Koffi Arnaud Kamenan Physics Pedagogical Unit Laboratory of Environmental Science and Technology University Jean Lorougnon Guédé Daloa C&#244te d’Ivoire Laboratory of Fundamental and Applied Physics University Nangui Abrogoua Abidjan C&#244te d’Ivoire Department of Medical Physics University of Trieste and International Centre for Theoretical Physics (ICTP) Trieste Italy Department of Science and Technology University Alassane Ouattara Bouaké C&#244te d’Ivoire nuclear Physics and Radiation Protection Team Laboratory of Material Sciences Environment and Solar Energy University Felix Houphouet-Boigny Abidjan C&#244te d’Ivoire Department of Mathematics Physics and Chemistry UFR Biological Sciences University Peleforo Gon Coulibaly Korhogo C&#244te d’Ivoire

The simulation by the Monte Carlo method executed by the software PyPEnELOPE proved effective to specify the particle propagation characteristics by calculating the absorption fractions, backscattering and transmission of electrons and secondary photons under the incidence of 0.5 to 20 KeV range of primary electrons. More than 99.9% of the primary electrons were transmitted in the 125 nm thick MgO/TiO2 material at 20 KeV. This occurred because several interactions took place in the transmitted primary irradiation such as characteristic, fluorescence, and bremsstrahlung produced when of the occupation of the KL3, KL2, KM3, and KM2 shell and sub-shell of titanium and magnesium which are the elements with a high atomic number in the material. The transmission particle characteristic of this material is therefore an indicator capable of improving the electrical performance and properties of the sensor.

关键词： Monte Carlo PyPEnELOPE Primary Electrons Transmission MgO/TiO2

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Assessment of Climate Change Impact on Water Requirement and Rice Productivity

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Rice science 2023年第4期30卷 276-293页

作者： konan jean-yves n’guessan Botou ADAHI Arthur-Brice konan-WAIDHET Satoh MASAYOSHI nogbou Emmanuel ASSIDJO Environmental Training and Research Unit Laboratory of Environmental Sciences and TechnologiesUniversitéJean Lorougnon GuédéBP 150 DaloaCôte d’Ivoire Department of Training and Research of Rural Engineering and Geographic Sciences Institut National Polytechnique FÉLIX HOUPHOUËT-BOIGNYBP 1093 YamoussoukroCôte d’Ivoire University of Tsukuba Ibaraki 305-8577Japan Department of Training and Research of Chemical and Food Engineering Laboratory of ModellingInformation and ProcessesInstitut National Polytechnique FÉLIX HOUPHOUËT-BOIGNYBP 1093 YamoussoukroCôte d’Ivoire

Assessing the impact of climate change(CC)on agricultural production systems is mainly done using crop models associated with climate model *** review is one of the few,with the main objective of providing a recent compendium of CC impact studies on irrigation needs and rice yields for a better understanding and use of climate and crop *** discuss the strengths and weaknesses of climate impact studies on agricultural production systems,with a particular focus on uncertainty and sensitivity analyses of crop *** the new generation global climate models(GCMs)are more robust than previous ones,there is still a need to consider the effect of climate uncertainty on estimates when using *** GCMs cannot directly simulate the agro-climatic variables of interest for future irrigation assessment,hence the use of intelligent climate ***,sensitivity and uncertainty analyses must be applied to crop models,especially for their calibration under different *** impacts of CC on irrigation needs and rice yields vary across regions,seasons,varieties and crop ***,integrated assessments,the use of remote sensing data,climate smart tools,CO_(2)enrichment experiments,consideration of changing crop management practices and multi-scale crop modeling,seem to be the approaches to be pursued for future climate impact assessments for agricultural systems。

关键词： climate change rice production irrigation crop model climate model

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Phenotypic, Cytological and Molecular (AFLP) Analyses of the Cotton Synthetic Allohexaploid Hybrid (G. hirsutum×G. longicalyx)²

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Open Journal of Genetics 2020年第2期10卷 35-49页

作者： n’guessan Olivier konan jean-Marie Jacquemin jean-Pierre Baudoin Guy Mergeai Laboratory of Crop Improvement Agroforestry Unit Jean Lorougnon Guédé University Daloa C&#244 te D’Ivoire Laboratory of Tropical Agroecology Gembloux Agro-Bio Tech Liège University Gembloux Belgium Department of Life Sciences Bioengineering Unit Walloon Agricultural Research Centre (CrAw) Gembloux Belgium

The wild cotton diploid species (2n = 2x = 26) are important sources of useful traits such as high fiber quality, resistance to biotic and abiotic stresses etc., which can be introgressed into the cultivated tetraploid cotton Gossypium hirsutum L (2n = 4x = 52), for its genetic improvement. The African wild diploid species G. longicalyx Hutchinson and Lee could be used as donor of the desirable traits of fiber fineness and resistance to reniform nematode. However, hybridization of wild diploid species and cultivated tetraploid cotton encounters a sterility problem of the triploid (2n = 3x = 59), mainly due to ploidy. The restoration of the fertility can be done by creating an allohexaploid (2n = 6x = 78) through the doubling with colchicine of the sterile triploid chromosomes. With this method, a synthetic allohexaploid hybrid (G. hirsutum × G. longicalyx)2 has been obtained. This genotype was studied using phenotypic, cytological and molecular (AFLP) analyses in order to confirm its hybridity and its caryotype, and also to verify the expression of the desirable traits coming from G. longicalyx. The studied genotype showed a quite good level of pollen fertility (83%), and apart from larger seeds and some minor seedling anomalies, most of its morphological characteristics were intermediate between the two parental species. It had 78 chromosomes, proving its hexaploid status. Molecular analysis revealed 136 AFLP loci in this hexaploid, all from G. hirsutum and G. longicalyx, demonstrating its hybrid status. In addition, the hexaploid exhibited the useful traits of G. longicalyx with regard to its remarkable fiber fineness and its high resistance to the reniform nematode. This allohexaploid hybrid constitutes an interesting agronomic material, which can be used as a bridge for the transfer of useful agronomic traits from wild species to varieties of G. hirsutum.

关键词： Gossypium spp Hexaploid Hybrid Chromosomes AFLP Marker Plant Breeding

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Influence of the Year and Growing Area on Maize (Zea mays L.) Production in the Central and north-Central Zones of Côte d’Ivoire (Departments of Bouake and Katiola)

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American Journal of Plant Sciences 2022年第8期13卷 1116-1125页

作者： Essy konan jean François Kouassi n’dri Jacob Kouame n’guessan Kouadio Yatty Justin Agricultural Production Improvement Laboratory UFR Agroforestry University of Jean Lorougnon GUEDE (UJLoG) Daloa C&#244 te d’Ivoire

Several studies conducted in recent years in Côte d’Ivoire reveal that agriculture is increasingly affected by the adverse effects of climate variability. The present study aims at evaluating the effect of the zone and the year of cultivation on the productivity of maize in the Central and north-Central zones of Cote d’Ivoire. It was carried out for two years (2020 and 2021). The experimental design used was a completely randomized block design with three replications. Observations were made on 12 agronomic parameters (plant size, internode size, collar diameter, number of leaves, number of internodes, cob insertion level, cob length, cob diameter, total kernels, cob dry weight, kernel dry weight, yield). The results showed that all agronomic traits of maize were significantly influenced by locality, except for the number of leaves. The highest values of the traits were observed in the locality of Bouaké. However, the year of cultivation did not influence the agronomic parameters of maize. This study will help to avoid yield decreases due to rainfall disturbances as a consequence of climate change.

关键词： Climate Variability Agronomic Parameters Growing Area

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Preliminary Study of Predation Effectiveness of the Assassin Bug Rhynocoris rapax Stal (Heteroptra: Reduviidae) on Fall Armyworm Spodoptera frugiperda Smith (Lepidoptera: noctuidae), a Major Pest of Maize Crops

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Advances in Entomology 2023年第1期11卷 10-17页

作者： Assiénin Hauverset n’guessan Brice Sidoine Essis Achi Laurent n’cho Hugues Annicet n’da Kouamé jean-noël konan n’guessan Alphonse Kouassi national Centre for Agronomy Research Research Station of La Mé Laboratory of Entomology Abidjan C&ocirc te d’Ivoire national Centre for Agronomy Research Food Crops Research Station Laboratory of Phytopathology Bouaké C&ocirc te d’Ivoire national Centre for Agronomy Research Research Station of Maize Millet and Sorghum Laboratory of Phytopathology Ferkessédougou C&ocirc te d’Ivoire national Centre for Agronomy Research Research Station of Maize Millet and Sorghum Plant Breeding Laboratory Ferkessédougou C&ocirc te d’Ivoire national Centre for Agronomy Research Research Station of La Mé Plant Breeding Laboratory Abidjan C&ocirc te d’Ivoire national Centre for Agronomy Research Research Station of La Mé Soil Science Laboratory Abidjan C&ocirc te d’Ivoire

Maize is a staple food in many sub-Saharan African countries, grown on large surfaces and with high production. However, maize’s cultivation is often confronted with attacks by the fall armyworm, which considerably reduces production. Thus, the use of biological agents in the control of the fall armyworm would contribute effectively to the sustainability of agriculture. It is in this context that this study, conducted at the La Mé station of the national Centre for Agronomy Research, aims to test the effectiveness of Rhynocoris rapax, a powerful predator of various insect families, on the fall armyworm Spodoptera frugiperda, for biological control of this maize pest in Côte d’Ivoire. Therefore, 3 batches of 1 adult individuals of Rhynocoris rapax were captured in trial plots set up at the La Mé station. These individuals were then put in contact with 3 batches of 5, 20 and 40 larvae of the pest in rearing boxes at an average temperature of 26.4°C and an average relative humidity of 60%, in order to evaluate the efficiency of the predation. The results showed that Rhynocoris rapax kills more larvae when these are in large numbers. The mortality of the high number of larvae was observed during the first three days, probably due to the voracity and aggressiveness of Rhynocoris rapax that period. So R. rapax is a potential predator of fall armyworm and should be protected.

关键词： Effectiveness Predation Rhynocoris rapax Spodoptera frugiperda Maize

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Study of Varietal Influence Post Conservation on Biochemical and Sensory Qualities of Attiékéand Boiled Cassava (Manihot esculenta Crantz)

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Agricultural Sciences 2016年第3期7卷 127-136页

作者： Pierre Martial Thierry Akely yves Djina Brou Roger konan Kady Irie Lucien Patrice Kouame n’guessan Georges Amani Laboratoire de Biochimie Alimentaire Technologie de Produits Tropicaux UFR STA UNA Abidjan Cote d’Ivoire Section Sciences de la vie et de la Terre Sciences et Technologie ENS Abidjan Cote d’Ivoire Laboratoire d’Enzymologie et Catalyse Enzymatique UFR STA UNA Abidjan Cote d’Ivoire

Cassava root is shortly preserved after harvesting due to its tanning and rapid physiological decomposition. Consequently, the commercial value is reduced and the craving of its finishes products. With an aim of improving physiological quality, post harvest food value “the effects of bleaching and conservation in silo-pits were evaluated. Four (04) varieties of cassava: Bocou1, Bocou2, Bocou3 and Yavo were collected fresh and healthy in 13 months of maturity. They were subjected to a bleaching (65°C /15 - 30 s) followed by a kinetic conservation (7 days of intervals) in silo-pit (1 × 0.6 × 0.5 m). Results show that Bocou2 variety has the high proteins content (2.64% ± 0.01%), followed by hydrocyanic acid (8.21 ± 0.01 mg/100 g) and total carotenoids (26.7 μg/100 g). The conservation influences positively the protein content, reducing sugars content, the dries matter content and the total phenolic compounds for all the varieties excluded Bocou2 variety whose protein content drops. As regard of the fat contents, a weak increase is observed. The sensory analysis reveals that the boiled cassava of the Yavo variety is more appreciated followed by Bocou1 variety. Concerning the Attiéké, Bocou3 variety gives the more appreciated dish followed by the Yavo variety. In conclusion, the silo-pit conservation after bleaching improves the physiological quality of the cassava and the sensory taste even during 14 days. This study has a huge impact of reducing the post harvests losses and increases the commercial value of cassava in the world.

关键词： Cassava Atttieke Boiled Post Conservation Silo-Pit Case Sensory Quality

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Juvenile Delinquency and Psychopathic Behavior: About a Case in Abidjan

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Open Journal of Psychiatry 2022年第4期12卷 285-295页

作者： Koffi Paulin konan Kouadio Raymond n’guessan Bla Désirée Sandrine Ziketo Brahima Samuel Traoré Yessonguilana jean-Marie Yeo-Tenena Department of Addictology and Mental Hygiene National Institute of Public Health Abidjan Ivory Coast UFR of Social and Human Sciences Jean Lorougnon Guédé University Daloa Ivory Coast UFR of Medical Sciences Félix Houphou&#235t-Boigny University Abidjan Ivory Coast

Violent and murderous juvenile delinquency born of the phenomenon of young people organized in gangs commonly called “microbes”, has become a real security problem for Ivorian society. It is in this context that this study has set itself the main objective of depicting the psychopathic behavior of a young “microbe” delinquent who has committed several violent crimes. It was a monographic study of the correlational-explanatory type that mobilized observation and semi-directive interviews for the production of data. The method of phenomenological analysis permits to detect traits of psychopathy in a 21-year-old youth through family history and accounts of criminal acts committed. The results of the study showed, on the one hand, a family dysfunction that gave the bed of behaviors such as the lack of empathy, the absence of remorse and the superficiality of the affects, thus translating a deficit on the level of the affective dimension. We also noted the presence of antisocial behavior such as living on the streets or in smoking rooms consuming and selling drugs. There were further implications such as theft, physical aggression and intentional homicide. According to the psychopathy literature, emotional insensitivity juxtaposed with behavior disorder was a primary combination of characteristics that help identify adolescents who exhibit psychopathic traits. Faced with this reality, this study pleads for the establishment of a special aid program to better control the deadly violence of these people.

关键词： Youth Delinquency Psychopathic Behavior Violence Abidjan

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Litho-Structural and Geochemistry Analysis of Granitoids from Mount Fouimba and Goma in Seguela Area (Central-Western Côte d’Ivoire)

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Open Journal of Geology 2023年第1期13卷 72-89页

作者： Allialy Marc Ephrem Houssou n’guessan nestor Kouadio Fossou jean Luc Davy Bedel Siogbo Kouassi Brice Roland konan Houphouet Felix UFR-STRM Felix Houphouet-Boigny University Abidjan-Cocody Abidjan C&#244 te d’Ivoire DGMG Abidjan C&#244 te d’Ivoire UFR-Biological Sciences Géosciences Department Peleforo Gon Coulibaly University of Korhogo Korhogo C&#244 te d’Ivoire

The petrogeochemical analysis of the granitoids of Mount Fouimba and Mount Goma in the Seguela region (central-western C?te d’Ivoire) is the subject of this study. This analysis combines remote sensing, geophysics, petrography and geochemistry, in order to determine the major characteristics of the granitoids in the study area, and above all to participate in the detailed mapping of all the Ivorian terrains. The granitoids encountered in this region are essentially two-mica granites, granodiorites and porphyry basalts. Chemical analysis indicates that these granitoids are of the ferrous and magnesian type with peraluminous to weakly metaluminous characteristics. They originate from the mantle and were emplaced in an active continental margin context.

关键词： Petrogeochemistry Granitoids Seguela Côte d’Ivoire

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Fouimba and Goma Mounts Greenstone Belts Litho-Structural Analysis Related to Côte D’Ivoire Birimian Geodynamic Setting and Implying in West-Africa Craton Gold Deposits

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Journal of Geoscience and Environment Protection 2023年第1期11卷 150-168页

作者： Marc Ephrem Allialy Brice Roland Kouassi n’guessan nestor Houssou Fossou jean Luc Kouadio Davy Bedel Siogbo Félix Oufouet konan UFR-STRM Felix Houphouet-Boigny University Abidjan C&#244 te d’Ivoire UFR-Biological Sciences Géosciences Department Peleforo Gon Coulibaly University of Korhogo Korhogo C&#244 te d’Ivoire Ministry of Mines Petroleum and Energy Abidjan C&#244 te d’Ivoire

Mount Fouimba and Mount Goma (Seguela) greenstone belts petro-structural studies combine remote sensing, geophysics, petrography and structural analysis. In view of establishing mapping details of paleoproterozoic geological formations, geological setting rocks observed are essentially magmatic formations, such as two-mica granite, granodiorites, and porphyritic basalts;and a few metamorphics which are metatonalite, amphibolites and amphibo-lopyroxenites. Remote sensing, such as Landsat 8 OLI satellite imagery and geophysical data, has been combined to show regional nnE-SW shear zone. Tectonic structures and microstructures have enabled to identify two main deformation phases: D1 phase corresponding to compression, and D2 is a transpression phase. Mechanisms responsible for deformations are respectively flattening and transpression. Geological formations derived from mantle origin but contain crustal components, and their tectonic setting occurred during subduction.

关键词： Petro-Structural Mapping Greenstone Belt Birimian Séguéla Côte D’Ivoire

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