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Study of Some Biodemographic Parameters of Caryedon serratus Olivier (Coleoptera: Chrysomelidae) Insect Pest of Tamarind (Tamarindus indica Lin.) Fruit, in Burkina Faso

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Advances in entomology 2024年第2期12卷 67-77页

作者： Kilo Francine Marina Ki Koï Wenceslas Kam emmanuel Kabore Antoine Sanon Zakaria Ilboudo Laboratoire d’entomologie fondamentale et appliqu&eacute e (LEFA) UFR/SVT Universit&eacute Joseph KI-ZERBO Ouagadougou Burkina Faso Institut Sup&eacute rieur du D&eacuteveloppement Durable Universit&eacute de Fada N’gourma Fada N’gourma Burkina Faso

The lack of food security leads us to turn to the riches of the forest, namely non-timber forest products (NTFP) and timber forest products (TFP). In Burkina, these products are a source of income for families, improving their living conditions. Tamarindus indica L. that is a NFTP, is widely used in both rural and urban areas. Unfortunately, tamarind is subject to attack by Caryedon serratus. Its biological activity begins on the fruit before the harvest. The aim of our study is to evaluate some biodemographic parameters of the insect pest C. serratus Olivier. First100 healthy T. indica pods were placed in contact with ten pairs of C. serratus for 24 hours. 25 pods, each carrying a maximum of two eggs, were divided into five batches of 5 pods. Then a pair of C. serratus aged less than 24 h was placed in contact with 4 healthy pods for 24 h. every day, the pair was removed and transferred to another box containing 4 new healthy pods. A total of 20 replicates were performed. The results showed that C. serratus has an average lifespan of 14 days. However, the female (16 days) lived longer and laid an average of 34 eggs during her lifetime. The egg-laying period lasted 14 days, the number of eggs increased until reaching a maximum peak on the 4th day. C. serratus has an embryonic development time of 3 days and an emergence rate of 66.63%. However, the weight of males and females differed significantly (p = 0.0108). We found an intrinsic rate of natural increase of 0.12 and a population doubling time was 5.68 days. These results have enabled us to gain a better understanding of its development cycle and its capacity for regeneration. This allows us to implement control strategies for better stock protection.

关键词： Biodemographic Parameters Stock Caryedon serratus Tamarindus indica

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A Hybrid Learning Algorithm for Breast Cancer Diagnosis

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Journal of Intelligent Learning Systems and Applications 2024年第3期16卷 262-273页

作者： Alio Boubacar goga Harouna Naroua Chaibou Kadri Laboratoire dInformatique fondamentale et applique-Sciences de lIngnierie (LIFA-SI) Dpartement de Mathmatiques et Informatique Facult des Sciences et Techniques Universit Abdou Moumouni Niamey Niger

In many fields, particularly that of health, the diagnosis of diseases is a very difficult task to carry out. Therefore, early detection of diseases using artificial intelligence tools can be of paramount importance in the medical field. In this study, we proposed an intelligent system capable of performing diagnoses for radiologists. The support system is designed to evaluate mammographic images, thereby classifying normal and abnormal patients. The proposed method (DiagBC for Breast Cancer Diagnosis) combines two (2) intelligent unsupervised learning algorithms (the C-Means clustering algorithm and the gaussian Mixture Model) for the segmentation of medical images and an algorithm for supervised learning (a modified DenseNet) for the diagnosis of breast images. Ultimately, a prototype of the proposed system was implemented for the Magori Polyclinic in Niamey (Niger) making it possible to diagnose (or classify) breast cancer into two (2) classes: the normal class and the abnormal class.

关键词： Image Diagnosis Segmentation DenseNet Unsupervised Learning Supervised Learning Breast Cancer

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Using Optical Tweezers to Study the Friction of the Red Blood Cells

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Advances in Bioscience and Biotechnology 2024年第2期15卷 100-111页

作者： edoukoua Jean Michel Konin Pavel Yale Abadê Ange-Boris N’guessan Kouassi Benoit Kouakou Abaka Michel Kouacou eugene Megnassan Département des Sciences et Techniques Université Alassane Ouattara Bouaké C&#244te d’Ivoire Laboratoire d’Instrumentation Image et Spectroscopie (L2IS) Institut National Polytechnique Félix Houphou&#235t-Boigny (INPHB) Yamoussoukro C&#244te d’Ivoire Classes préparatoires aux grandes ecoles Université de San Pedro San Pedro C&#244te d’Ivoire Laboratoire de Physique fondamentale et appliquée Université Nangui Abrogoua (UNA) Abidjan C&#244te d’Ivoire

In the last two decades the study of red blood cell elasticity using optical tweezers has known a rise appearing in the scientific research with regard to the various works carried out. Despite the various work done, no study has been done so far to study the influence of friction on the red blood cell indentation response using optical tweezers. In this study, we have developed a new approach to determine the coefficient of friction as well as the frictional forces of the red blood cell. This approach therefore allowed us to simultaneously carry out the indentation and traction test, which allowed us to extract the interfacial properties of the microbead red blood cell couple, among other things, the friction coefficient. This property would be extremely important to investigate the survival and mechanical features of cells, which will be of great physiological and pathological significance. But taking into account the hypothesis of friction as defined by the isotropic Coulomb law. The experiment performed for this purpose is the Brinell Hardness Test (DB).

关键词： Friction Indentation Optical Tweezers Tribology Red Blood Cells

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Bismuth(Ⅲ) Salts:green Catalysts for Organic Transformations

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复旦学报（自然科学版） 2005年第5期44卷 787-788页

作者： C. Le Roux Laboratoire Hétérochimie fondamentale et appliquée Université Paul Sabatier 118 Route de Narbonne 31062 Toulouse Cedex 4 France

Bismuth, the heaviest stable element in the periodic table, stands out from other heavy elements (such as mercury, thallium and lead) due to its relatively non-toxic character which confers on bismuth the enviable status of being an eco-friendly element. Therefore, bismuth and its compounds hold considerable promise as useful catalysts for green chemistry. The research presented in this communication is devoted to the applications of bismuth( Ⅲ ) salts as catalysts for organic *** some general comments about bismuth and a short presentation of the various applications of bismuth( Ⅲ ) salts in organic synthesis, this communication will focus on the works done in our research group during the last several years which deals mainly with electrophilic substitutions. When appropriate, some mechanistic details will be given.

关键词：铋盐催化剂有机变换合成方法有机化学

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The global Standard Stratotype-section and Point （gSSP） for the base of the eocene Series in the Dababiya section （egypt）

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episodes 2007年第4期30卷 271-286页

作者： Marie-Pierre Aubry Khaled Ouda Christian Dupuis William A., Berggren John A. Van Couvering 无 Department of earth and Planetary Sciences Rutgers University 610 Taylor Road Piscataway New Jersey 08554 USA8 Department of geology University of Assiut Assiut Egypt géologie fondamentale et appliquée Mons PolytechnicsRue de Houdain 9 B-7000 Mons Belgium The Micropaleontology Project 256 Fifth Avenue New York NY 10001 USA the Members of the Working group on the Paleocene/eocene Boundary

The gSSP for the base of the eocene Series is located at 1.58 m above the base of Section DBH in the Dababiya Quarry, on the east bank of the Nile River, about 35 km south of Luxor, egypt. It is the base of Bed 1 of the Dababyia Quarry Beds of the el Mahmiya Member of the esna Formation, interpreted as having recorded the basal inflection of the carbon isotope excursion （CIe）, a prominent （3 to 5%） geochemical signature which is recorded in marine （deep and shallow） and terrestrial settings around the world. The Paleocene/eocene boundary is thus truly a globally correlatable chronostratigraphic level.

关键词：层型断面始新世第三纪下层埃及

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Dynamics Study of the Deformation of Red Blood Cell by Optical Tweezers

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Open Journal of Biophysics 2017年第2期7卷 59-69页

作者： Konin e. Jean Michel Yale Pavel Megnassan eugene Michel A. Kouacou Jeremie T. Zoueu Laboratoire d’Instrumentation Image et Spectroscopie UMRI EEA INP-HB Yamoussoukro Cote d’Ivoire Laboratoire de Physique fondamentale et appliquée UNA Abidjan Cote d’Ivoire

In recent years, extensive research has been carried out on red blood cells in order to investigate their mechanical properties. The interest in these studies has been possible thanks to the technological innovations made in the field of micro or nano manipulation of biological and non-biological particles without physical contact. In the present project, we have developed a new approach to study the deformation of red blood cells moving against a trapped microbead by applying a sinusoidal voltage (DC offset 3.5 Vpp) to the stage at 0.4 Hz frequencies. The oscillating movement imposed on the stage highlights the indentation test and the tensile test known for the study of mechanical behavior of materials. The mechanical properties found are: the modulus of elasticity (Young Modulus), the shear modulus, the coefficient of hardening and erythrocyte resistance coefficient. The axial shear modulus 25.00 ± 1.5 μN/m and the transversal shear modulus 15.7 ± 4.63 μN/m were compared to those in the literature. These values were respectively determined by Hooke’s law and the Hertz model.

关键词： Optical Tweezers elasticity Mechanical Properties Tensile Indentation

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effectiveness of Hermetic Storage Using PICS Bags and Plastic Jars for Post-Harvest Preservation of <i>Acacia macrostachya</i>Seeds

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Advances in entomology 2021年第1期9卷 20-29页

作者： Marcellin Yamkoulga Antoine Waongo Zakaria Ilboudo Fousséni Traoré Antoine Sanon Institut de l’environnement et de Recherches Agricoles (INeRA) Ouagadougou Burkina Faso Laboratoire d’entomologie fondamentale et appliquée UFR/SVT Université Joseph Ki-Zerbo Ouagadougou Burkina Faso

In Burkina Faso, the availability of Acacia macrostachya “Zamnè” seeds throughout the year is threatened by the attacks of pests. So, the effectiveness of airtight (hermetic) storage for the preservation of these seeds was evaluated using 20-litre plastic jars and 50 kg PICS bags as hermetic containers with 50 kg polypropylene bags as controls. Seeds of Acacia macrostachya (17.5 kg) were stored in each of these storage devices for six months under ambient conditions in the laboratory. The number of storage pest Bruchidius silaceus increased significantly in polypropylene bags from 235 to 715 individuals on average/500 g of seeds. But in PICS bags and plastic drums, the number of this pest did not vary significantly (191 and 239 individuals on average/500 g of seeds for plastic jars and PICS bags respectively). In both hermetic devices, we found few individuals of another major storage pest

关键词： Airtight Storage Acacia macrostachya Bruchidius silaceus Caryedon furcatus Seed Quality

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DFT Study, Linear and Nonlinear Multiple Regression in the Prediction of HDAC7 Inhibitory Activities on a Series of Hydroxamic Acids

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Computational Molecular Bioscience 2019年第3期9卷 63-80页

作者： Doh Soro Lynda ekou Bafétigué Ouattara Mamadou guy-Richard Kone Tchirioua ekou Nahossé Ziao Laboratoire de Thermodynamique et de Physico-Chimie du Milieu UFR SFA Université Nangui Abrogoua Abidjan C&#244 te-d’Ivoire Laboratoire de Physique fondamentale et appliquée Université Nangui Abrogoua C&#244 te d’Ivoire

In this work, we conducted a QSAR study on 18 molecules using descriptors from the Density Functional Theory (DFT) in order to predict the inhibitory activity of hydroxamic acids on histone deacetylase 7. This study is performed using the principal component analysis (PCA) method, the Ascendant Hierarchical Classification (AHC), the linear multiple regression method (LMR) and the nonlinear multiple regression (NLMR). DFT calculations were performed to obtain information on the structure and information on the properties on a series of hydroxamic acids compounds studied. Multivariate statistical analysis yielded two quantitative models (model MLR and model MNLR) with the quantum descriptors: electronic affinity (Ae), vibration frequency of the OH bond (ν(OH)) and that of the NH bond (ν(NH)). The LMR model gives statistically significant results and shows a good predictability R2 = 0.9659, S = 0.488, F = 85 and p-value . electronic affinity is the priority descriptor in predicting the activity of HDAC7 inhibitors in this study. The results obtained suggest that the descriptors derived from the DFT could be useful to predict the activity of histone deacetylase 7 inhibitors. These models were evaluated according to the criteria of Tropsha et al.

关键词： Hydroxamic Acids Histones Deacetylases DFT Histones Deacetylases Inhibitors QSAR

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Use of Fluorescence and Reflectance Spectra for Predicting Okra (<i>Abelmoschus esculentus</i>) Yield and Macronutrient Contents of Leaves

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Open Journal of Applied Sciences 2017年第10期7卷 537-558页

作者： Wilfried g. Dibi Jocelyne Bosson Irié Casimir Zobi Bi Tra Tié Jérémie T. Zoueu Laboratoire d’Instrumentation Image et Spectroscopie Unité Mixte de Recherche et d’Innovation en Electricité et Electronique Appliquées Ecole Supérieure d’Industrie Institut Nationale Polytechnique Houphouet-Boigny Yamoussoukro C&ocirc te d’Ivoire Laboratoire de Physique fondamentale et appliquée Unité de Formation et de Recherche en Sciences Fondamentales et Appliquées Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire Laboratoire de Pédologie Ecole Supérieure d’Agronomie Institut Nationale Polytechnique Houphouet-Boigny Yamoussoukro C&ocirc te d’Ivoire

In-field proximal sensing of most major crops nutrients still remains an economical and technical challenge. For this purpose, the use of effective multi-excitation fluorescence and reflectance wavelengths is explored in this work on Okra plant. Visible-near infrared (400 - 1000 nm) reflectance and multi-fluorescence data were collected at leaf scale in a chemically fertilized field by using an USB spectrometer mounted with an Arduino-based LeD driver clip. N, P, K and Ca content of samples leaves were measured using reference methods. Average pods yield and leaves macronutrients content were calibrated using IRIV-PLS regression after spectra pretreatments. Single informative wavelengths bands in reflectance, red and far-red fluorescences were selected for building yield and macronutrient content models. We showed that flowering stage was more suitable for yield prediction. Moderately useful macronutrient models were found in Ca content (RPDval = 1.93, rP = 0.818) and potassium content with RPDval = 1.8, rP = 0.88. P and N yielding prediction performance of RPDval = 1.61 (rP = 0.718 ) and RPDval = 1.46 (rP = 0.56) respectively were less accurate. This study demonstrates potentiality of fluorescence and reflectance spectroscopy for accurate estimation of leaf macronutrient content and crop yield. High selectivity obtained from resulted spectral bands could lead to the development of reliable, rapid and cost-effective devices for nutrient diagnosis.

关键词： Proximal Sensing Fluorescence and Reflectance Fertilized Field Macronutrients Content Pods Yield

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Rainfall Variability and Trends in West Africa

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Atmospheric and Climate Sciences 2023年第1期13卷 72-83页

作者： Anoumou Réné Tano François-Xavier Djézia Bella Bouo Justin Koffi Kouamé Yao Tchétché Sylvain Djédjé Zézé Bafétigué Ouattara equipe de la Physique pour l’environnement Laboratoire de Physique Fondamentale et Appliquée Université NANGUI ABROGOUA Abidjan C&#244 te d’Ivoire Laboratoire de Physique Université de Man Man C&#244 te d’Ivoire

Rainfall variability associated with climate change has enormous impacts on ecosystems, agriculture and people in West Africa but few studies have been devoted to it. Monthly rainfall data from 1901 to 2013, provided by the global Precipitation Climatology Center dataset, were analyzed using segmentation and empirical modal decomposition (eMD) methods to increase our knowledge on past and recent spatio-temporal rainfall trends and their impacts on the West African region. The results obtained showed that the peak of rainfall during the short rainy season is observed in September in Côte d’Ivoire, ghana and Liberia. The temporal variability of this rainfall is marked by several breakpoints whose durations range from 2 to 70 years. The periods of change in the rainfall regime, characterized by the appearance of breakpoints, vary from one country to another and are of unequal duration. The main breakpoint appears after 1960. Periods of relative or normal increase or decrease in precipitation are observed before and after 1960. The long-term variability of this rainfall is characterized by a decrease in the amount of rainfall over all West African countries. The results of this study can be used as a tool to help raise awareness among populations for sustainable management of water resources in response to climate change and its adverse effects.

关键词： Rainfall Variability Segmentation Method empirical Mode Decomposition Method West Africa

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