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Costs of Schizophrenia at Psychiatric Hospital of Bingerville (Ivory Coast)
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作者 Madjara Anoumatacky Anna-Corinne Bissouma Drissa Kone 《Open Journal of Psychiatry》 2024年第1期1-10,共10页
Schizophrenia is classified as a priority mental disorder by the World Health Organization (WHO) and accounts for around 35% of diagnoses at the Bingerville Psychiatric Hospital (HPB). The aims of the study were to id... Schizophrenia is classified as a priority mental disorder by the World Health Organization (WHO) and accounts for around 35% of diagnoses at the Bingerville Psychiatric Hospital (HPB). The aims of the study were to identify the cost drivers for hospitalization and to calculate the costs of managing schizophrenia in hospital, with a view to planning household expenditure on care. This pilot cross-sectional study involved 31 patients with schizophrenia who had been hospitalized in the various third-category wards at the HPB between 1st January 2019 and 31st May 2020. Sampling was accidental. The methods used to estimate costs were based on the actual costs of drugs, hospitalization and additional examinations which prices were known, and on patients’ estimations for certain expenses such as food and transport. Results: The sex ratio was 3.42, the mean age was 29.52 years. The mean length of stay was 46.19 days, and the most frequent clinical forms were paranoid schizophrenia (41.9%) and schizoaffective disorder (29%). The combination of haloperidol and chlorpromazine was the most common medications for initial treatment (67.8%) and maintenance treatment (41.9%). The average cost of hospitalization at HPB for schizophrenia was XOF 164,412 (€249.90). The average direct medical cost was XOF 105,412 (€160.226) and the average direct non-medical cost was XOF 59,000 (€89.68). The average daily cost of antipsychotic treatment was XOF 795/day (€1.2084). The high cost of drugs as a proportion of hospitalization costs suggested the need of a reflection on the simplification of prescribing practices, assistance in psychiatric emergencies and the development of other alternatives to psychiatric hospitalization in Côte d’Ivoire. 展开更多
关键词 SCHIZOPHRENIA COST HOSPITALIZATION HPB Côte d’Ivoire
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Physico-Chemical and Nutritional Properties of a Food Broth Based on Nere (Parkia biglobosa)
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作者 Lassana Bamba Gervais Melaine M’Boh +5 位作者 N’Gbésso Amos Ekissi Kipré Laurent Séri Gnogbo Alexis Bahi Koffi Pierre Valery Niaba Allico Joseph Djaman Grah Avit Maxwell Beugre 《Food and Nutrition Sciences》 CAS 2024年第5期377-389,共13页
Purpose: Diet and eating habits are major risk factors for the health and the development of disease, such as, for example, metabolic disorder leading to cardiovascular pathology and cancer, decreased immunity exposin... Purpose: Diet and eating habits are major risk factors for the health and the development of disease, such as, for example, metabolic disorder leading to cardiovascular pathology and cancer, decreased immunity exposing to infections. This study of the physico-chemical and nutritional properties of a soumara-based food broth was carried out with the aim of promoting the consumption of organic broth made from nere seeds (soumara). That is to alleviate certain metabolic diseases, which is a matter of food safety, and also to limit the risk for the health about the consumption of some cooking stocks on the market. Methods: Several natural ingredients such as nere seeds (soumara), ginger, black pepper, parsley and garlic were used to create a nere-based stock. All these ingredients were freeze-dried and the powder obtained was used to make the broth, regarding their physical and chemical properties. Results: The broth had a good protein content of 17.41 ± 0.367 g/100g, a lipid content of 16.80 ± 0.08 g/100g and a fiber content of 8.66 ± 0.04 g/100g. In terms of nutritional values, the broth showed good levels of calcium 184.21 ± 0.09 mg/100g, potassium 50.04 ± 1.45 mg/100g and iron and zinc. In terms of antioxidant activity, the broth also showed good antioxidant activity. Conclusion: Regarding the properties of our food broth, whose composition is based on natural ingredients, could be recommended for consumption and, its properties, could play an important role in preventing and combating certain metabolic diseases. 展开更多
关键词 Food Broth Nere Physico-Chemical Properties NUTRITION Food Safety
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Contribution of SAR Radar Imagery in the Detection of Suspicious Vessels in the Ivorian EEZ
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作者 Koffi Cyprien Yoboue Jean-Baptiste Kassi +1 位作者 Eric Valère Djagoua Tiemelé Jacque-André 《World Journal of Engineering and Technology》 2024年第1期200-212,共13页
The present work proposed a method for match SAR and AIS data to detect vessels carrying out suspicious activity in the Ivorian EEZ. Two superposition methods, detected AIS and SAR data, based on point-to-point associ... The present work proposed a method for match SAR and AIS data to detect vessels carrying out suspicious activity in the Ivorian EEZ. Two superposition methods, detected AIS and SAR data, based on point-to-point association on the one hand and point-to-line on the other hand, were used to detect suspicious vessels in Ivorian marine waters. The results showed that most vessels detected in the Ivorian EEZ do not declare their positions to avoid being spotted. These funds are likely to practice illegal, undeclared and unregulated fishing (INN fishing). This clandestine activity is very recurrent in Ivorian waters. This is illustrated by the number of suspicious vessels detected by SAR radar imagery which is greater compared to declared or authorized vessels. 展开更多
关键词 INN Fishing CFAR Algorithm AIS Sentinel-1A Ivory Coast
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Radiation Dose from CT-Scan of Childhood’s Head: Results of the First Ivorian Survey in a Single Study Site
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作者 Koutoua Joseph Anouan Adjoua Sonia Dje +1 位作者 Idrissa Garba Yoh Esther Soro 《Journal of Applied Mathematics and Physics》 2024年第5期1725-1732,共8页
Objectives: This study aims to evaluate the level of X-ray doses used in childhood’s head as Local Diagnostic Reference Levels (LDRLs) in computed tomography (CT) at a university hospital in Côte d’Ivoire. The ... Objectives: This study aims to evaluate the level of X-ray doses used in childhood’s head as Local Diagnostic Reference Levels (LDRLs) in computed tomography (CT) at a university hospital in Côte d’Ivoire. The Diagnostic Reference Level (DRL) have been set up and used to prevent unusually high radiation doses used in radiology departments and is therefore an optimization tool for practices and procedures in medical X-ray imaging for the radiation protection of patients. Methods: A prospective study of volume CT dose index (CTDI<sub>vol</sub>) and dose length product (DLP) was performed on images of childhood’s head obtained from a CT-scanner of 64 bars equipped with the tube current modulation capability and manufactured by Hitachi Medical System. 122 CT-scan data from 55 childhood’s head were analyzed. The scan data were stratified in four age groups: Results: The 75th percentile of CTDI<sub>vol</sub> and DLP (set as LDRL) obtained with respect to the stratified age groups are: 22.5 mGy and 452.5 mGy∙cm, 27.7 mGy and 690.6 mGy∙cm, 28 mGy and 722.4 mGy∙cm, 33.6 mGy and 736.8 mGy∙cm respectively. These outcome values increase with respect to the age of pediatric patients and are comparable to DRLs values obtained internationally. Conclusions: Obtaining good image quality while using low dose in children’s head computed tomography for radiation protection require to setup more surveys in Côte d’Ivoire for regional and national DRL. We proposed through this survey LDRLs in terms of CTDI<sub>vol</sub> and DLP, comparable to international DRLs values. This survey will be strengthened by additional surveys in order to obtain national DRLs for the radiation protection of the child patient in Côte d’Ivoire. 展开更多
关键词 Radiation Protection Computed Tomography Imaging CHILDHOOD Diagnostic Reference Levels
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Primary Characterization of a Novel Soymilk-Cashew Fermented with an Improving of Its Antioxidant and Anti-Inflammatory Contents
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作者 Assamoi A. Antoine Atobla Koua +1 位作者 Ouattara H. Djeneba Gnagnini Tokro Ruth D’Avila 《Food and Nutrition Sciences》 CAS 2023年第5期421-435,共15页
Cashew nut (Anacardium occidental) milk was included as a functional ingredient in soybean (Glycine max L.) milk at 20/80% and was fermented comparatively to commercial yogurt starters by two strains TC6 and A4 (recen... Cashew nut (Anacardium occidental) milk was included as a functional ingredient in soybean (Glycine max L.) milk at 20/80% and was fermented comparatively to commercial yogurt starters by two strains TC6 and A4 (recently isolated from two Ivorian highly flavored neglected traditional staple foods (beer and garlic)) identified as Weissella paramesenteroides and Enterococcus faecalis, after the screening of their probiotic, antioxydant and anti-inflammatory potentialities, respectively. The primary characterization of these plant-milks showed a strong improvement in their sensory, antioxidant and anti-inflammatory abilities. While TC6 from traditional beer Tchapalo increases anti-inflammatory activity by almost eighteen times, A4 isolated from garlic increases antioxidant activity by two times. Due to their aromatic and organosensory potentialities certainly, milks L138, L180 and 130 fermented respectively by the combination of TC6 and A4, TC4 alone and A4 alone were the most appreciated than the plant-milk fermented by the two strains of commercial yogurt. These probiotics, anti-oxidant and anti-inflammatory plant-milks should be further characterized in terms of their biological activities and tested in animal models to confirm their nutrition-health claims. 展开更多
关键词 Probiotic Staple Food Soy-Milk Anti-Oxydant ANTI-INFLAMMATORY
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HPLC Profiling for Quality Control of Secondary Metabolites of Aqueous and Hydroethanolic Extract of Gardenia aqualla Stapf &Hutch
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作者 Claude Bérenger Ngantchouko Ngalemo Jean Kisito Kouame +5 位作者 Gisele Laurel Tchiengang Tchoua Blondin Gatien Tsawo Patrick Yamen Mbopi Théophille Dimo Christophe N’cho Amin François Nicaise Bony 《American Journal of Analytical Chemistry》 CAS 2023年第1期1-11,共11页
WHO strategy on traditional medicine is based on security and quality of phytomedicine. Commonly adulterated affecting mostly metabolic and sexual dysfunction drugs. Control quality of those phytomedicines requires de... WHO strategy on traditional medicine is based on security and quality of phytomedicine. Commonly adulterated affecting mostly metabolic and sexual dysfunction drugs. Control quality of those phytomedicines requires development of strategy and techniques applicable to them. Among the techniques, Reverse Phase Liquid Chromatography is the most used and has been developed in these studies to assess a protocol to characterize Gardenia aqualla leaves extract. The method consists in determining chromatographic conditions using organic and pH gradient models based on water and acetonitrile combined with pH modifiers made up of formic acid (AF) and ammonium hydroxide (NH<sub>3</sub>). Results show that extracts contain mainly acidic compounds quickly eluted by NH<sub>3</sub> and more retained by AF. Optimal pH range for separation is 3 - 7 corresponding to 1.59 mM of NH<sub>3</sub> and 6.55 mM of AF. In these conditions, elution of many polar compounds could be effective using a C18 based-deactivated column in a short period of time. 展开更多
关键词 Gardenia aqualla Extracts Quality Control Method Development Reverse Phase Liquid Chromatography
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Diophantine Quotients and Remainders with Applications to Fermat and Pythagorean Equations
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作者 Prosper Kouadio Kimou François Emmanuel Tanoé 《American Journal of Computational Mathematics》 2023年第1期199-210,共12页
Diophantine equations have always fascinated mathematicians about existence, finitude, and the calculation of possible solutions. Among these equations, one of them will be the object of our research. This is the Pyth... Diophantine equations have always fascinated mathematicians about existence, finitude, and the calculation of possible solutions. Among these equations, one of them will be the object of our research. This is the Pythagoras’- Fermat’s equation defined as follows.                                                                                         (1) when , it is well known that this equation has an infinity of solutions but has none (non-trivial) when . We also know that the last result, named Fermat-Wiles theorem (or FLT) was obtained at great expense and its understanding remains out of reach even for a good fringe of professional mathematicians. The aim of this research is to set up new simple but effective tools in the treatment of Diophantine equations and that of Pythagoras-Fermat. The tools put forward in this research are the properties of the quotients and the Diophantine remainders which we define as follows. Let a non-trivial triplet () solution of Equation (1) such that . and are called the Diophantine quotients and remainders of solution . We compute the remainder and the quotient of b and c by a using the division algorithm. Hence, we have: and et with . We prove the following important results. if and only if and if and only if . Also, we deduce that or for any hypothetical solution . We illustrate these results by effectively computing the Diophantine quotients and remainders in the case of Pythagorean triplets using a Python program. In the end, we apply the previous properties to directly prove a partial result of FLT. . 展开更多
关键词 Diophantine Equation Modular Arithmetic Fermat-Wiles Theorem Pythagorean Triplets Division Theorem Division Algorithm Python Program Diophantine Quotients Diophantine Remainders
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Consistency in <i>Z</i>-<i>R</i>Relationship Variability Regardless Precipitating Systems, Climatic Zones Observed from Two Types of Disdrometer 被引量:1
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作者 Bakary Bamba Abé Delfin Ochou +1 位作者 Eric-Pascal Zahiri Modeste Kacou 《Atmospheric and Climate Sciences》 2014年第5期941-955,共15页
Data from rain Drop Size Distributions gathered on five sites in Africa as well as those of the pilot site in Kourou (French Guyana, South America), located in different climatic zones, and collected by two types of d... Data from rain Drop Size Distributions gathered on five sites in Africa as well as those of the pilot site in Kourou (French Guyana, South America), located in different climatic zones, and collected by two types of disdrometer (the impact JW RD-69 disdrometer and the Optical Spectro-Pluviometer, OSP) are used to study the consistency of the reflectivity factor-rain rate at the ground (Z-R) relationship variability. The results clearly confirm that the relationship Z-R knows a large spatial variability, from a type of precipitation to another and within the same precipitation regardless the type of disdrometer used for DSD measurements. Base on the similarity of the relations reflectivity factor-rain rate and ratio median volume diameter over the total number of drops-rain rate, the variability of the Z-R coefficients (A, b) through the simultaneously implication of the size and number of drops which characterize the DSD was exhibited. It was shown that the relationships A-α and b-β designed to understand the involvement of parameters D0 and NT of DSD in the variability of the relationship Z-R are similar regardless the types of disdrometer used. However, the relations A-α in the Sahelian region appear to deviate from those of Guinean, equatorial and Soudanian zones. The plausible reasons were discussed. 展开更多
关键词 Drop Size Distributions CONSISTENCY in Z-R RELATIONSHIP VARIABILITY Squall Lines Thunderstorm Stratiform Rain JW RD-69 DISDROMETER Optical Spectro-Pluviometer OSP
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Design and Characterization of a Horizontal Double Impinging Jet Cell: Determination of Flow Modes at the Surface of a Flat Electrode 被引量:1
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作者 Désiré M. K. Abro Pierre Dable +3 位作者 Fernando Cortez-Salazar Véronique Amstutz Edith Kouassi Kwa-Koffi Hubert Girault 《Journal of Materials Science and Chemical Engineering》 2016年第8期18-28,共11页
An electrochemical cell consisting of a double horizontal Impinging Jet Cell (IJC) has been conceived and characterized. The purpose of this system is the simultaneous electrodeposition of a composite metal/particle c... An electrochemical cell consisting of a double horizontal Impinging Jet Cell (IJC) has been conceived and characterized. The purpose of this system is the simultaneous electrodeposition of a composite metal/particle coating on both surfaces of a metal sheet. The silica particles imprint in the nickel matrix has allowed to distinguish four different flow areas onto the electrode namely the stagnation area, the radial flow area characterized by a higher flow speed, the return flow area that involves gravity effect, and the drainage area with a constant draining speed. Based on the limiting current evolution as a function of the Reynolds number, three flow modes were extracted: the Laminar Low Flow (LLF), the Laminar High Flow (LHF) and the Disturbance. The IJC investigated ensures a laminar flow for a large range of flow rate from a nozzle-to-sample distance of 19 mm and creates an laminar flow ovoid plan merged with the sample for the high flows. 展开更多
关键词 Impinging Jet Cell HYDRODYNAMIC Flow Regimes Electrocodeposition
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Intra-Diverticular Bladder Tumor about a New Observation in the Urology Department of Chu Cocody—Abidjan, Côte d’Ivoire 被引量:1
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作者 Clément Cyrille Vodi Edy Edmond Gowé +6 位作者 Alain Didier Abouna Abroulaye Fofana Gnakouri Alain Pacome Gnabro Nikan Félicité Kramo Ali Drabo Paul Gérard Konan Angoran Hyjins Dekou 《Open Journal of Urology》 2021年第9期326-331,共6页
This case report is about a 61 years old woman who consulted for hematuria, the cystoscopy performed revealed an intra-diverticular bladder tumor. After tumor resection, an anatomopathological exam revealed the urothe... This case report is about a 61 years old woman who consulted for hematuria, the cystoscopy performed revealed an intra-diverticular bladder tumor. After tumor resection, an anatomopathological exam revealed the urothelial carcinoma pT1. A few months later she presented with a local reccurence of bladder tumor. We proposed her anterior pelvectomy but she refused it and she was lost to follow-up. The aim of this study is to show the anatomopathological and evolutionary characteristics and the therapeutic difficulties of IDBT. These tumors are in the majority of cases infiltrating from the outset with a high potential for recurrence after transurethral resection of bladder (TURB). The standard treatments are TURB and total cystectomy. 展开更多
关键词 Tumor BLADDER DIVERTICULUM TURB
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Cartography for the Aquifer Potential Recharge Areas of the Base of the Department of Aboisso(South-East Cote d’Ivoire) 被引量:1
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作者 Gabriel Etienne Ake Kan Jean Kouame +3 位作者 Daouda Fofana Oularé Sekouba Affoué Bénédicte Koffi Jean Patrice Jourda 《Journal of Geoscience and Environment Protection》 2019年第8期49-68,共20页
The study highlights the potential recharge areas of the aquifers of the Department of Aboisso for an adequate and rational management of their use. The methodology used consisted in the identification of parameters (... The study highlights the potential recharge areas of the aquifers of the Department of Aboisso for an adequate and rational management of their use. The methodology used consisted in the identification of parameters (land use, soil types, drainage density, slope, induced permeability and alteration thickness) allowing infiltration and their expression as thematic maps. A weighting of these parameters was made by the multicriteria analysis method of Saaty. The integration to GIS conducted to elaborate the map of the potential recharge area of the aquifers for the Department of Aboisso. It brings to light five recharge level classes (bad: 20%;mediocre: 19%, medium: 45%;good: 15% and very good: 1%) in the study area. That map reveals the dominance of good recharge areas covering 61% and practically all over the studied area. They are generally characterized with gentle slopes coupled with mosaics of cultivations and forests, and high induced permeability allowing better infiltration. The zones of low recharge cover 39% of the department’s area, and are mainly located in urban areas inside the streams. This study exhibited that the land use is the preponderant parameter influencing the recharge in base area. This map could be considered as an excellent support for all kinds of activities especially to implement planning in the Department of Aboisso, the setting up of drilling broadbands and the choice of future sites for landfills or landfill of wastes to protect groundwater from any pollution. 展开更多
关键词 RECHARGE CARTOGRAPHY Multicriteria Analysis Aboisso Cote d’Ivoire
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Pyramidal and Granule Cells Distribution through Hippocampal Fields: An Index for Sensory Information Processing
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作者 Abdoulaye Ba 《Journal of Behavioral and Brain Science》 2015年第5期173-184,共12页
Background: This work aims at investigating the histology of hippocampus formation as structural model of information processing. The study addressed the question whether the pattern of cellular type distribution with... Background: This work aims at investigating the histology of hippocampus formation as structural model of information processing. The study addressed the question whether the pattern of cellular type distribution within hippocampal fields could be used as support of information processing in the hippocampus. Method: Pyramidal-shaped neurons presenting both cytoplasm and nucleus outlined clearly were measured systematically on brain slides, using a light microscope connected to a microcomputer equipped with a scanner software for measuring particles. Morphological types of cells were identified following class sizes and their distribution determined through hippocampal fields. Results: A battery of statistical tests: Sturges’ classification, class sizes distribution around overall mean, Bartlett’s sphericity test, principal components analysis (PCA) followed by correlations matrix analysis and ANOVA allowed two cellular groups to be identified in the hippocampus: large and small pyramidal-shaped cells. Conclusion: The results show that sensory information processing in the hippocampus could be built on two classes of pyramidal neurons that differed anatomically with probably different physiological functions. The study suggests combination ensembles clustering large and small pyramidal cells at different rates, as fundamental signaling units of the hippocampus. 展开更多
关键词 Rat Hippocampus PYRAMIDAL and GRANULE Cells DISTRIBUTION MORPHOMETRIC Measurements Population Coding Information Processing
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HPLC Quantification of Dexamethasone Palmitate in Bronchoalveolar Lavage Fluid of Rat after Lung Delivery with Large Porous Particles
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作者 Alain N’Guessan Armand Koffi +5 位作者 Ismaë l L. Dally Christophe N’Cho Amin Claire Gueutin Nicolas Tsapis Elias Fattal 《American Journal of Analytical Chemistry》 2019年第9期404-414,共11页
A high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of dexamethasone palmitate (DXP) in bronchoalveolar fluid lavage samples (BALF). DXP in rat BALFs containin... A high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of dexamethasone palmitate (DXP) in bronchoalveolar fluid lavage samples (BALF). DXP in rat BALFs containing the internal standard (IS), testosterone decanoate (TD), was extracted using a mixture of chloroform and methanol (9:1, v/v). Extracts were then centrifuged, dried and dissolved in acetonitrile. A chromatographic separation based on an isocratic elution was done using acetonitrile and water (85:15, v/v) as a mobile phase at a flow rate of 1.2 mL/min. The graph of the developed method was linear within the tested calibration range of 0.5 - 40 μg/mL. The overall extraction recovery of DXP from BALF samples was 84.3% ± 1.6%. The accuracy (relative error) and precision (coefficient of variation) values were within the pre-defined limits of ≤15% at all concentrations. This methodology has been applied to determine levels of DXP in BALF samples collected from rats treated with DXP large porous particles. The measured concentrations were successfully evaluated using a non-compartment pharmacokinetic model. Since the developed method requires only a microvolume (100 μL) of BALF sample for analysis, it is therefore particularly suitable for the evaluation of drug biodistribution in lung. 展开更多
关键词 DEXAMETHASONE PALMITATE Bronchoalveolar LAVAGE FLUID HPLC
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Classification of Hourly Clearness Index of Solar Radiation in the District of Yamoussoukro
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作者 Siaman Paule Carine Yeboua Yao N’Goran Kouakou Konan 《Energy and Power Engineering》 2019年第5期220-231,共12页
The exploitation of systems using solar energy as a source of energy is not fluctuations free because of short passage of clouds on solar radiation. The amplitude, the persistence and the frequency of these fluctuatio... The exploitation of systems using solar energy as a source of energy is not fluctuations free because of short passage of clouds on solar radiation. The amplitude, the persistence and the frequency of these fluctuations should be analyzed with appropriate tools, instead of focusing on their location over time. The analysis of these fluctuations should use the instantaneous clearness index whose distribution is given as a first approximation which is independent not only of the season but also of the site. It is important to evaluate the potential solar energy in a region. Indeed such evaluation helps the decision-makers in their reflections on agricultural or photovoltaic solar projects. Then this study was conducted for a predictive purpose. The method used in our work combines the classification method which is the hierarchical ascending classification and two partitioning methods, the principal component?analysis and the K-means method. The partitioning method enabled to?achieve a number of well-known situations (in advance) that are representative of the day. The study was based on the data of a climatic weather station in the district of Yamoussoukro located in the center region of C&ocirc;te d’Ivoire during the 2017 year. Using the clearness index, the study allowed the classification of the solar radiation in the region. Thus, it showed that only 346 days of the 365 days in 2017 were classified (95%). We identified three clusters of days, the cloudy sky (29%), the partly cloudy sky?(32%) and the clear sky (39%). The statistical tests used for the characterization?of these clusters will be detailed in a future study. 展开更多
关键词 CLEARNESS Index HIERARCHICAL Clustering Principal Component Analysis K-MEANS Method CLASSIFICATION
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Construction of the rat brain spatial cell firing model on a quadruped robot
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作者 Naigong Yu Yishen Liao +1 位作者 Hejie Yu Ouattara Sie 《CAAI Transactions on Intelligence Technology》 SCIE EI 2022年第4期732-743,共12页
Physiological studies have shown that rats in a dark environment rely on the limbs and vestibule for their self-motion information,which can maintain the specific firing patterns of grid cells and hippocampal CA3 plac... Physiological studies have shown that rats in a dark environment rely on the limbs and vestibule for their self-motion information,which can maintain the specific firing patterns of grid cells and hippocampal CA3 place cells.In the development stage of rats,grid cells are considered to come from place cells,and place cells can be encoded by hippocampal theta cells.Based on these,the quadruped robot is used as a platform in this paper.Firstly,the sensing information of the robot's limbs and inertial measurement unit is obtained to solve its position in the environment.Then the position information is encoded by theta cells and mapped to place cells through a neural network.After obtaining the place cells with singlepeak firing fields,Hebb learning is used to adjust the connection weight of the neural network between place cells and grid cells.In order to verify the model,3-D simulation experiments are designed in this paper.The experiment results show that with the robot exploring in space,the spatial cells firing effects obtained by the model are consistent with the physiological research facts,which lay the foundation for the bionic environmental cognition model. 展开更多
关键词 ROBOT NEURAL FIRING
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Forced Electrocodeposition of Silica Particles into Nickel Matrix by Horizontal Impinging Jet Cell
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作者 Désiré M. K. Abro Pierre Jean Marie Richard Dable +2 位作者 Véronique Amstutz Edith Kouassi Kwa-Koffi Hubert Girault 《Journal of Materials Science and Chemical Engineering》 2017年第2期51-63,共13页
The improvement of silica particle codeposition into a nickel electrodeposited composite coating (ECC) by a double face horizontal impinging jet cell (IJC) has been studied. The microstructure of coatings was examined... The improvement of silica particle codeposition into a nickel electrodeposited composite coating (ECC) by a double face horizontal impinging jet cell (IJC) has been studied. The microstructure of coatings was examined by means of scanning electron microscopy performed in backscattered electron mode. The embedded particles distribution was shown to be the densest and the most uniform in laminar low flow mode and when the nozzle is at a distance of 5 mm close from the cathode. Excrescences observed on the composite surface are due to the wave-like flow of the jet on the cathode surface. The silica content of the nickel composite coatings was assessed by energy dispersive X-ray spectroscopy. The amount of particles embedded in the coating decreases with an increasing Reynolds number and as the nozzle-to-sample distance d becomes larger. A maximum rate of 4.43 wt% of silica has been successfully loaded at a distance d equal to 5 mm in the Ni-SiO2 composite coating. 展开更多
关键词 Electrocodeposition Nickel-Silica Composite Coatings IMPINGING Jet CELL HYDRODYNAMICS
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Nicotinamide Inhibition Properties for Copper Corrosion in 3.5% NaCl Solution: Experimental and Theorical Investigations
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作者 Coulibaly Nagnonta Hippolyte Brou Yapi Serge +2 位作者 Akpa Sagne Juan Creus Trokourey Albert 《Journal of Materials Science and Chemical Engineering》 2018年第3期100-121,共22页
This work reports the inhibition properties of nicotinamide (NAM) for copper protection during its applications in seawater systems such as water pipelines, shipbuilding, seawater desalination and heat exchange system... This work reports the inhibition properties of nicotinamide (NAM) for copper protection during its applications in seawater systems such as water pipelines, shipbuilding, seawater desalination and heat exchange systems. The efficiency of NAM as a copper corrosion inhibitor in simulated seawater (3.5% NaCl solution) was investigated by Tafel extrapolation and linear polarization methods in the temperature range from 20℃ to 50℃. The corrosion parameters and the adsorption isotherms were determined using potentiodynamic polarization techniques. It was found that the inhibition efficiency (η) and the coverage rate (θ) increase up 80% at 25℃ for nicotinamide concentration of 10 mM but decrease as the temperature of the solution increases. Moreover, the obtained thermodynamic parameters using Langmuir model suggested a physical adsorption type. A correlation was found between the corrosion inhibition efficiency and the global theoretical parameters obtained by the functional density method B3LYP/ 6-31 + G (d, p). Local parameters such as condensed Fukui functions [f(r)] and condensed local softness [s(r)] indices have also been determined to obtain a chemical insight into atoms that have a significant tendency toward donation or acceptance of whole or fraction of electrons. 展开更多
关键词 NICOTINAMIDE Copper Corrosion INHIBITION Electrochemical Techniques
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Estimation of Methane Emission from Kossihouen Sanitary Landfill and Its Electricity Generation Potential (Côte d’Ivoire)
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作者 Kouakou Adjoumani Rodrigue Kra Essi +1 位作者 Kouadio Marc Cyril Trokourey Albert 《Journal of Power and Energy Engineering》 2018年第7期22-31,共10页
In order to solve the problem of the management of municipal solid waste in Abidjan (Cote d’Ivoire), a sanitary landfill has been designed in Kossihouen. Despite the adverse greenhouse effects of the methane, this ga... In order to solve the problem of the management of municipal solid waste in Abidjan (Cote d’Ivoire), a sanitary landfill has been designed in Kossihouen. Despite the adverse greenhouse effects of the methane, this gas has a potential of electrical energy. The estimation of methane emissions from the waste can be an economic and useful way for more accurate control and management of waste disposal in Kossihouen. Therefore, conducting this study is essential. Methane emissions were estimated based on the methane generation constant K and the methane generation potential L0 using LandGEM 3.02. The results show that the quantity of methane emissions was 7.97E+07 m3/year. Based on this result, the methane content can generate 10% of total electricity consumed in Abidjan in 2026. This paper could serve as a source of scientific information for decision making on environmental sustainability in waste-to-energy projects in Cote d’Ivoire. 展开更多
关键词 METHANE LandGEM Kossihouen LANDFILL GAS
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An Infinite Family of Number Fields with No Inert Primes
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作者 François Emmanuel Tanoé 《Advances in Pure Mathematics》 2022年第12期744-756,共13页
The goal of this paper is to show that there are infinitely many number fields K/Q, for which there is no inert prime p ∈ N*, i.e. &#8704;p ∈ N* a prime number, prime ideal of K such that where: Zk</sub> i... The goal of this paper is to show that there are infinitely many number fields K/Q, for which there is no inert prime p ∈ N*, i.e. &#8704;p ∈ N* a prime number, prime ideal of K such that where: Zk</sub> is the Dedekind domain of the integer elements of K. To prove such a result, consider for any prime p, the decomposition into a product of prime ideals of Zk</sub>, of the ideal . From this point, we use on the one hand: 1) The well- known property that says: If , then the ideal pZ<sub>k</sub> decomposes into a product of prime ideals of Zk</sub> as following: . (where:;is the irreducible polynomial of θ, and, is its reduction modulo p, which leads to a product of irreducible polynomials in Fp[X]). It is clear that because if is reducible in Fp[X], then consequently p is not inert. Now, we prove the existence of such p, by proving explicit such p as follows. So we use on the other hand: 2) this property that we prove, and which is: If , is an irreducible normalized integer polynomial, whose splitting field is , then for any prime number p ∈ N: is always a reducible polynomial. 3) Consequently, and this closes our proof: let’s consider the set (whose cardinality is infinite) of monogenic biquadratic number fields: . Then each f<sub>θ</sub>(X) checks the above properties, this means that for family M, all its fields, do not admit any inert prime numbers p ∈ N. 2020-Mathematics Subject Classification (MSC2020) 11A41 - 11A51 - 11D25 - 11R04 - 11R09 - 11R11 - 11R16 - 11R32 - 11T06 - 12E05 - 12F05 -12F10 -13A05-13A15 - 13B02 - 13B05 - 13B10 - 13B25 -13F05 展开更多
关键词 Fields Extensions Splitting Fields Polynomials Finite Fields Extensions Polynomials of Fp[X] Dedekind Ring Ramification Theory Monogeneity Quadratic & Biquadratic Fields Irreducible Polynomials of Degree 3 & 4
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Cultural Practice in Cote d'Ivoire: An Ethnography of the Feminization of Funeral Expenses
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作者 Akissi Amandine KONAN Sylvestre Bouhi TCHAN BI Kando Amédée SOUMAHORO 《Cultural and Religious Studies》 2020年第2期92-101,共10页
The“Letagonins”:a concept socially constructed to designate the“beating”women of Ivorian society,evokes those who have as their leitmotif,a self-realization through work.The purpose lies in their ability to free t... The“Letagonins”:a concept socially constructed to designate the“beating”women of Ivorian society,evokes those who have as their leitmotif,a self-realization through work.The purpose lies in their ability to free themselves from male domination.This concept means in one of the local Ivorian languages,notably the Gouro1:female boy.These women of Gouro ethnicity show a deep passion for the marketing of food products in Abidjan.However,behind this passion for food is their commitment to funeral expenses;a cultural activity customary lying with agnatic parentage.The transgression of custom by the latter under the prism of their social repositioning is the symbolic manifestation of the destandardization of the traditional relationship between man and woman in the organization of funerals in Gouro country,in the central West Ivorian.Understanding this relational reconfiguration has fuelled our passion as a researcher.In fact,ethnography has been mobilized as a method of observing the funeral practices of these women.In this regard,the study traces the strategies for negotiating access to the land as well as those used to negotiate access to information. 展开更多
关键词 funeral expenses destandardization ETHNOGRAPHY negotiating strategies Cote d'Ivoire
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