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Contribution of GIS to Soil Landscape Mapping by Multi-Criteria Analysis Using Weighting: The Case of the Square Degrees of M’Bahiakro (Centre) and Daloa (Centre-West) in Ivory Coast

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Open Journal of Geology 2024年第1期14卷 101-116页

作者： Guy fernand.Yao Derving Baka Nestor Kouman Yao Kouakou Bala Mamadou Ouattara Kouadio Amani Jean Lopez Essehi Brou Kouame Albert Yao-Kouame Sustainable Soil Management and Water Control Program Central Laboratory Soils Water and Plants (LCSEP) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Department of Soil Sciences Training and Research Unit for Earth Sciences and Mining Resources (UFR STRM) University Félix Houphou&#235t-Boigny of Cocody-Abidjan Abidjan Ivory Coast Department of Geography Training and Research Unit (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast

As part of the drive to improve coffee and cocoa production in Ivory Coast, studies are carried out to identify soils that are favourable for these crops. It is therefore necessary to orientate soil investigations based on reliable criteria that best discriminate soil cover. With this in mind, this study is being carried out to help improve survey methods by mapping soil landscapes. It uses GIS and weighted multicriteria analysis. To do this, satellite images were processed and the geological map of the square degrees of M’Bahiakro and Daloa was reclassified. The results show that relief is the main factor in soil landscape differentiation, with respective weights of 0.58 and 0.67 for the forest and pre-forest zones. In contrast, the weight of geological formation in soil landscape differentiation remains low (0.05 for the forest zone and 0.07 for the pre-forest zone). The criteria used on the base of aggregation sum methods have made it possible to formulate soil landscape mapping prediction functions according to agro-ecological environments in the humid intertropical zone. This is essential for the orientation of soil survey work. Nevertheless, other comparative methods, such as the coding mapping method, could provide elements for discussion to validate the models.

关键词： GIS Multi-Criteria Analysis Soil Landscapes M’Bahiakro Daloa Ivory Coast

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Effects of Calcium and Magnesium on Phosphorus Availability in Ferralsols and Rice Production in Forest Zones of Côte d’Ivoire

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Journal of Agricultural Chemistry and Environment 2024年第1期13卷 33-53页

作者： Guy fernand.Yao Brahima Kone Kouadio Amani Franck Michaël Lemonou Bahan Jean Lopez Essehi Brou Kouame François Lompo Albert Yao-Kouame National Center for Agronomic Research (CNRA) Central Laboratory Soils Water and Plants (LCSEP) Sustainable Soil and Water Management Program Bouaké C&ocircte d’Ivoire Soil Water and Geomaterials Sciences Laboratory (LS2EG) Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&eumlt-Boigny University Abidjan C&ocircte d’Ivoire National Center for Agronomic Research (CNRA) Man Research Station Rice Program Man C&ocircte d’Ivoire Environment and Agricultural Research Institute (INERA) Ouagadougou Burkina Faso

Phosphorus bioavailability has long been a recurring problem in tropical acid soils. A pot experiment was carried out during three (3) successive rice production cycles at Adiopodoumé to evaluate the response of the NERICA 5 rice accession to various doses of calcium, magnesium and phosphorous. The experiment was conducted using a randomized split-plot design. The interactive effects of calcium carbonate (0, 25, 50 and 75 kg·Ca·ha-1) and magnesium sulfate (0, 25, 50 and 75 kg·Mg·ha-1) and Togo natural phosphate (0, 25, 50 and 75 kg·P·ha-1) were determined at each production cycle. The results showed that single-dose natural phosphate supplementation for three cropping cycles resulted in an average enrichment of around 2 mg·P·kg-1 after each trial following its continuous dissolution, with an increase in DSP (33.31% to 70.52%). The study revealed one strategy for managing and enhancing native P with cations and another for exogenous P: there would be a synergy of Ca/Mg on native P, whereas an antagonism would characterize the two parameters in phosphate fertilization.

关键词： Soil Acidity Native and Exogenous Phosphorus Free Iron Ca/Mg Balances Rice Growing Côte d’Ivoire

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Response of the Maize Variety EV87-28 to a Fertilization Strategy Involving Indorama Granular Urea on Ferralsol in the Central Ivory Coast

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Agricultural Sciences 2024年第1期15卷 187-208页

作者： fernand.Guy Yao Kouadio Amani Brou Kouame Jean Lopez Essehi Brahima Kone Kouadio Houphouet Cheikh Ahmed Diawara Bala Mamadou Ouattara Albert Yao-Kouame Central Laboratory Soils Water and Plants (LCSEP) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) University Félix Houphou&#235t-Boigny of Cocody-Abidjan Abidjan Ivory Coast Cotton Research Station National Agricultural Research Center (CNRA) Bouaké Ivory Coast Food Crops Research Station National Agricultural Research Center (CNRA) Bouaké Ivory Coast Department of Geography Unit of Training and Research (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast

In Côte d’Ivoire, the decline in soil fertility strongly impacts the productivity of maize (Zea mays L.) on heavily leached ferralitic soil. In this study, the general objective was therefore to improve the productivity of maize EV87-28 on the Ferralsols in pre-forested areas during different cropping seasons. Eight (8) micro-plots were set up according to a total randomization device with three repetitions. Two factors were studied: nitrogen fertilizer modalities (main factor) and crop season (secondary factor). Growth, flowering and yield parameters were measured and analyzed. The results showed that there was no interaction between the nitrogen fertilizer factor and the cropping season factor. In addition, this study showed the short rainy season had the most positive impact on growth, flowering and yield parameters than the long rainy season. The results also showed that the different nitrogen fertilizer modalities had no statistically different effects on growth, flowering and yield parameters. However, quantitative differences were reported, highlighting one nitrogen fertilizer modality, which is the combination of urea granule + farm manure (75% urea indorama granules and 25% farm manure). The combination of urea granule + farm manure (75% urea indorama granules and 25% farm manure) had the best effect on corn grain yield. So, the combination of urea (75%) and manure (25%), that resulted in yield gain, could be recommended for corn fertilization during the small rainy season.

关键词： Indorama Granular Urea Ferralsol Cultural Seasons Maize Ivory Coast

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Multicriteria Analysis by Codification for the Determination of Soil Landscape Units in Forest and Pre-Forest Zones of Cote D’Ivoire: The Case of the Square Degrees of M’Bahiakro and Daloa

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International Journal of Geosciences 2024年第1期15卷 12-24页

作者： Guy fernand.Yao Derving Baka Koffi Emmauel Kassin Bala Mamadou Ouattara Nestor Kouman Yao Kouakou Kouadio Amani Jean Lopez Essehi Brou Kouame Albert Yao-Kouame National Agricultural Research Center (CNRA) Central Laboratory Soils Water and Plants (LCSEP) Sustainable Soil Management and Water Control Program Bouaké Ivory Coast Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Soil Water and Geomaterials Sciences Laboratory (LS2EG) Félix Houphou&#235t-Boigny University Cocody-Abidjan Abidjan C&#244te d’Ivoire Mondelez International Abidjan C&#244te d’Ivoire Training and Research Unit (UFR) Communication Environment and Society Department of Geography University Alassane Ouattara Bouaké C&#244te d’Ivoire Soil Water and Geomaterials Sciences Laboratory (LS2EG) Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast

The present study, carried out in the forest (Daloa) and pre-forest (M’Bahiakro) zones of Cote d’Ivoire, aims to determine soil landscape units using the coding method. Geological maps and satellite images (SRTM and Landsat) were used for this purpose. The methodological approach adopted consisted in producing maps of slope, geology, land use and topography using the codification method. These various maps, integrated into a GIS using the coding aggregation method, were used to generate soil landscape maps. Twenty-seven (27) soil landscapes have been identified for the pre-forest zone (M’Bahiakro), with a strong dominance of acid rock over a moderate relief under savannah, forest/degraded forest and crops/fallow. However, the forest zone (Daloa), with forty-one (41) soil landscapes identified over the entire zone, is characterized by a majority of mafic rocks on a medium altitude under forest/degraded forest, water and crops/fallow. The criteria used from the codification method (sum of aggregations) made it possible to predict the spatial distribution of soil map units according to agro-ecological environments in the humid intertropical zone. This is essential for the orientation and reinforcement of soil survey tools. However, a comparative evaluation of the different multicriteria analysis methods for coding and weighting soil landscape unit mapping would enable us to identify the most suitable and efficient method for drawing up base maps for soil surveys.

关键词： GIS Multicriteria Analysis by Coding Soil Landscapes Daloa M’Bahiakro Cote D’Ivoire

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PSA screening for prostate cancer： why so muc ：ontroversy？

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Asian Journal of Andrology 2013年第5期15卷 603-607页

作者： fernand.Labrie Laval University Quebec Que. GIV 4M7 Canada

Since prostate cancer reaches the advanced and non curable stage in the absence of any specific symptom or sign, it seems reasonable to diagnose this cancer at an early and curable stage. Screening by prostate-specific antigen （PSA） has been the common technology used. The last follow-up of the first two prospective and randomized screening studies for prostate cancer, namely the Quebec and ERSPC （European Randomized Study of Screening for Prostate Cancer） clinical trials started in 1988 and 1991, respectively, have shown reductions of prostate cancer death of 62% （P〈0.002） and 21% （P〈0.001）（38% in the tenth and eleventh years of follow-up, P〈0.003）, respectively, while the PLCO （Prostate Lung Colorectal and Ovarian Cancer） screening trial reported no benefit. It has been estimated, however, that 85% of men in the planned ＇non-screened＇ group of the US study have been screened. With such a serious flaw, the PLCO study does not have the statistical power to reach any valid conclusion. In the Quebec study, only 7.3% of men were screened in the control arm. The important benefit observed in the ERSPC study was achieved using a less than optimal 4-year PSA screening interval which misses a significant number of cancers while the Quebec study used the optimal 1-year interval. With proper information obtained from their physicians or otherwise using data collected only from the clinical trials having the required statistical power, men should be in a good position to decide about being or not being screened for prostate cancer.

关键词： early diagnosis improved survival prostate cancer prostate-specific antigen screening

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Calcium-Magnesium Ca/Mg Ratios and Their Agronomic Implications for the Optimization of Phosphate Fertilization in Rainfed Rice Farming on Acidic Ferralsol in the Forest Zone of Ivory Coast

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Open Journal of Soil Science 2024年第1期14卷 81-96页

作者： fernand.G. Yao Brahima Kone Franck M. L. Bahan Kouadio Amani Jean L. Essehi Mamadou B. Ouattara Konan E. B. Dibi Brou Kouame François Lompo Albert Yao-Kouame Central Laboratory Soils Water and Plants (LCSEP) National Center for Agronomic Research (CNRA) Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Cocody-Abidjan Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast Department of Rice Program Man Research Station National Center for Agronomic Research (CNRA) Man Ivory Coast Department of Geography Unit of Training and Research (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast Food Crops Research Station (SRCV) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Institute of the Environment and Agricultural Research (INERA) Ouagadougou Burkina Faso

This study is a contribution to improving rice productivity on acidic plateau soils of the tropical rainforest zone. It is based on taking into account the cationic balances of the soil in order to optimize the phosphorus (P) nutrition of rice on these acidic soils, where this nutrient constitutes a limiting factor for agricultural production. Three (3) pot trials were conducted in Adiopodoumé in the forested south of Côte d’Ivoire. The interactive effects of calcium carbonate (0, 25, 50 and 75 kg Ca ha−1) and magnesium sulfate (0, 25, 50 and 75 kg Mg ha−1) were evaluated on the response of NERICA 5 rice at doses 0, 25, 50 and 75 kg P ha−1 of natural phosphate from Togo, applied only once at the start of the experiment. Additional fertilizers of nitrogen (N) (100 kg N ha−1) and potassium (K) (50 kg KCl ha−1) were added to each of the tests in a split-plot device. The test results revealed a paddy production potential of approximately 3 to 5 t⋅ha−1 for NERICA 5 on an acidic soil, under the effect of the interaction of P, Ca and Mg. The quadratic response of rice yield to the doses of these fertilizers would be more dependent on their balance, itself influenced by Ca nutrition. For the sustainability and maintenance of rice production in agro-ecology studied, it was recommended doses of 38 kg Ca ha−1, 34 kg Mg ha−1 in a Ca/Mg ratio (1/1) with intakes of 41 kg P ha−1, overall in a ratio 1/1/1 (P/Ca/Mg) more favorable to the availability of free iron considered a guiding element of mineral nutrition. Thus, these promising results should be confirmed in a real environment for better management of the fertilization of rice cultivated on acidic plateau soils in Côte d’Ivoire.

关键词： Soil Acidity Ca/Mg Ratios Phosphate Fertilization Rice Growing Ivory Coast

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Proactive reconciliation as a tool for integrating mining and milling operations

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International Journal of Mining Science and Technology 2019年第2期29卷 239-244页

作者： Ana Carolina Chieregati Luiz Eduardo Campos Pignatari Francis fernand.Pitard Homero Delboni Jr Department of Mining and Petroleum Engineering University of Sao Paulo EDEM Engenharia Mineral Francis Pitard Sampling Consultants

Historically, reconciliation has been viewed as a quality test of model estimates as well as a powerful tool for detecting and correcting problems in all stages of mine operations from resource estimation to metal production. If used correctly, reconciliation helps to better predict the life of mine(LOM), improves the adherence of production plans to the respective budget, and allows for effective control of the mining and milling processes. However, the accuracy of reconciliation results requires that all input data must be generated in accordance with the principles of sampling correctness. Furthermore, complete reconciliation systems can become extremely complex and must be carefully analyzed in order to provide realistic and helpful conclusions. Based on these concepts, this paper presents a successful proactive reconciliation system applied to a copper and gold mine in Brazil for monitoring and integrating mining and milling operations.

关键词： Reconciliation Prognostication Sampling Gold Copper

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Recent Strategies for the Development of Biosourced-Monomers, Oligomers and Polymers-Based Materials: A Review with an Innovation and a Bigger Data Focus

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Journal of Biomaterials and Nanobiotechnology 2016年第4期7卷 167-213页

作者： Serge Rebouillat fernand.Pla Currently with DuPont Int. Op. European Headquarters Geneva Switzerland Laboratoire Réactions et Génie des Procédés UMR 7274 CNRS-Université de Lorraine Nancy France

After setting the ground of the quantum innovation potential of biosourced entities and outlining the inventive spectrum of adjacent technologies that can derive from those, the current review highlights, with the support of Bigger Data approaches, and a fairly large number of articles, more than 250 and 10,000 patents, the following. It covers an overview of biosourced chemicals and materials, mainly biomonomers, biooligomers and biopolymers;these are produced today in a way that allows reducing the fossil resources depletion and dependency, and obtaining environmentally-friendlier goods in a leaner energy consuming society. A process with a realistic productivity is underlined thanks to the implementation of recent and specifically effective processes where engineered microorganisms are capable to convert natural non-fossil goods, at industrial scale, into fuels and useful high-value chemicals in good yield. Those processes, further detailed, integrate: metabolic engineering involving 1) system biology, 2) synthetic biology and 3) evolutionary engineering. They enable acceptable production yield and productivity, meet the targeted chemical profiles, minimize the consumption of inputs, reduce the production of by-products and further diminish the overall operation costs. As generally admitted the properties of most natural occurring biopolymers (e.g., starch, poly (lactic acid), PHAs.) are often inferior to those of the polymers derived from petroleum;blends and composites, exhibiting improved properties, are now successfully produced. Specific attention is paid to these aspects. Then further evidence is provided to support the important potential and role of products deriving from the biomass in general. The need to enter into the era of Bigger Data, to grow and increase the awareness and multidimensional role and opportunity of biosourcing serves as a conclusion and future prospects. Although providing a large reference database, this review is largely initiatory

关键词： Biomass Biosourced Monomers Advanced Biomaterials Chemical Building Blocks Design Strategy Metabolic Engineering Innovation Bigger Data

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Molecular genetic analysis of a Chinese patient with Fabry disease

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Chinese Medical Journal 2000年第2期113卷 90-92页

作者： Ching-Wan Lam Ying-Tat Mak Yuk-Ming Dennis Lo Sui-FanTong Ka-Fai To fernand.Mac-Moune Lai Department of Chemical Pathology Chinese University of Hong Kong Prince of Wales Hospital Hong Kong Hong Kong Dept. of Anat. and Cell. Pathology Chinese University of Hong Kong Prince of Wales Hospital Hong Kong Hong Kong

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A Review: On Smart Materials Based on Some Polysaccharides;within the Contextual Bigger Data, Insiders, “Improvisation” and Said Artificial Intelligence Trends

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Journal of Biomaterials and Nanobiotechnology 2019年第2期10卷 41-77页

作者： Serge Rebouillat fernand.Pla Currently with DuPont Int. Op. European Headquarter Geneva Switzerland Laboratory of Reactions and Process Engineering University of Lorraine Nancy France

Smart Materials are along with Innovation attributes and Artificial Intelligence among the most used “buzz” words in all media. Central to their practical occurrence, many talents are to be gathered within new contextual data influxes. Has this, in the last 20 years, changed some of the essential fundamental dimensions and the required skills of the actors such as providers, users, insiders, etc.? This is a preliminary focus and prelude of this review. As an example, polysaccharide materials are the most abundant macromolecules present as an integral part of the natural system of our planet. They are renewable, biodegradable, carbon neutral with low environmental, health and safety risks and serve as structural materials in the cell walls of plants. Most of them are used, for many years, as engineering materials in many important industrial processes, such as pulp and papermaking and manufacture of synthetic textile fibres. They are also used in other domains such as conversion into biofuels and, more recently, in the design of processes using polysaccharide nanoparticles. The main properties of polysaccharides (e.g. low density, thermal stability, chemical resistance, high mechanical strength…), together with their biocompatibility, biodegradability, functionality, durability and uniformity, allow their use for manufacturing smart materials such as blends and composites, electroactive polymers and hydrogels which can be obtained 1) through direct utilization and/or 2) after chemical or physical modifications of the polysaccharides. This paper reviews recent works developed on polysaccharides, mainly on cellulose, hemicelluloses, chitin, chitosans, alginates, and their by-products (blends and composites), with the objectives of manufacturing smart materials. It is worth noting that, today, the fundamental understanding of the molecular level interactions that confer smartness to polysaccharides remains poor and one can predict that new experimental and theoretical t

关键词： Polysaccharides Cellulose Hemicelluloses Chitosan Alginate Composites Blends Hydrogels Smart Materials Electro-Active Papers Sensors Actuators Bigger Data Innovation Science in Education Jazz 4C CRAC

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