European Journal of Scientific Research

Volume 154 No 1
September, 2019

Structure et Distribution Spatiale de Henneguya camerounensis Fomena et Bouix, 1987 et Henneguya ntondei Fomena, Lekeufack Folefack et Bouix, 2008 Parasites Branchiaux Chez Schilbe mystus (Linné, 1758) dans le Fleuve Mbam au Cameroun
6-20
Lekeufack Folefack Guy Benoît, Djotcha Florence Larissa, Feudjio Dongmo Bienvenu and Fomena Abraham
Abstract:
L’étude de la structure et de la distribution spatiale des Myxosporidies parasites de Schilbe mystus a été menée. Les poissons, capturés dans le fleuve Mbam, ont été regroupés en fonction de la taille et du sexe. Le système branchial a été arbitrairement subdivisé en régions. La méthode standard de recherche et d’indentification des Myxosporidies a été utilisée. Henneguya camerounensis et Henneguya ntondei , retrouvées dans les branchies de S. mystus , ont adopté une distribution agrégative et sont apparues peu fréquentes. La charge kystique moyenne a été forte pour H. camerounensis et faible chez H. ntondei . La charge kystique de H. camerounensis a augmenté avec l’âge du poisson. Le sexe de S. mystus n’influe pas sur la distribution des espèces parasites récoltées. Le modèle d’occupation des holobranchies par ces espèces d’Henneguya a été l’équipartition. L’holobranchie IV héberge moins de kystes des deux espèces d’ Henneguya . Les hémibranchies antérieures des holobranchies I et III hébergent plus de kystes de H. ntondei . Les zones médiane et postérieure des holobranchies II et IV hébergent plus de kystes de H. camerounensis . La structure et la distribution de H. camerounensis et H. ntondei sur le système branchial de S. mystus sont déterminés par des facteurs biotiques et abiotiques.
Motsclés: Henneguya camerounensis, Henneguya ntondei, Schilbe mystus, branchies, distribution spatiale, écologie.


Effets des Huiles Essentielles de Ocimum gratissimum L. et de Cymbopogon citratus Stapf sur les Paramètres de Croissance et de Production du Cotonnier en Côte d’Ivoire
21-35
Koffi Christophe Kobenan, Brou Julien Kouakou, Kouadio Kra Norbert Bini, Malanno Kouakou, Acka Emmanuel Dick and Ochou Germain Ochou
Abstract:
L’objectif du travail effectué, était de montrer l’action des huiles essentielles, de deux plantes aromatiques avérées pesticides (Ocimum gratissimum et Cymbopogon citratus), sur les paramètres agromorphologiques du cotonnier. Les huiles essentielles ont été extraites et caractérisées. Au champ, les cotonniers ont été soumis aux effets des extraits huileux et d’un insecticide chimique par pulvérisation foliaire toutes les deux semaines du 45ème au 115ème jour après la levée. Les résultats ont révélé que l’extrait de O. gratissimum renfermait de fortes proportions en monoterpènes hydrocarbonés tandis que celui de C. citratusétait riche en éléments oxygénés. A la concentration de 5 %, les huiles essentielles ont significativement freiné la croissance caulinaire des cotonniers (0,49 cm/j). A cette teneur, les cotonniers traités avec l’extrait de C. citratusont obtenu le nombre le plus faible de capsules vertes (9,61 capsules/plantes) contrairement à celui de O. gratissimum (12,55 capsules/plante) et du produit chimique (13,15 capsules/plante). A la production, les cotonniers traités avec l’insecticide de synthèse ont présenté de plus fortes valeurs de poids moyen capsulaire (2,03 g), de rendement en graine (53,63 %), de poids de 100 graines ou seed index (7,55 g) et de meilleur rendement en coton-graine (963,28 kg/ha). Cependant, l’application des huiles essentielles a induit l’obtention d’un bon rendement en fibres (44,16 %). Relativement à la chute des organes, les produits évalués n’ont pas provoqué de façon significative l’abscission des capsules vertes. Globalement, les cotonniers protégés avec l’extrait de O. gratissimum ont été plus productifs que ceux traités avec celui de C. citratus.
Motsclés: Pesticides, huiles essentielles, cotonnier, croissance, production, Côte d’Ivoire.


Seasonal Variation of Pesticides in the Water-Sediment and Tilapia Oreochromis Niloticus Matrix, Raised in the Ponds in the South-East of Côte d'Ivoire
36-46
Safiatou Coulibaly, Kouame Hiver Yao and Boua Célestin Atse
Abstract:
The aim of this study was to determine the level of contamination in the water-sediment matrix and in the flesh of tilapia Oreochromis niloticus raised in ponds located 5 km from the village of Offoumpo in the city of Agboville. Samples of water, sediment and fish were collected monthly from February to July 2017 in three ponds. Pesticide residues were determined by high performance liquid chromatography coupled with a mass spectrometer. The results showed that the water-sediment-fish matrix contained pesticides from the family of Herbicides, Insecticides, Rodenticides and Fungicides. A total of thirty (30) active molecules was detected. Twenty-one (21) molecules were found in water and sediment. On the other hand, in the flesh of tilapia, twenty-four (24) active molecules have been identified. Monolinuron and Diuron were found only in sediment while Buturon, Isoproturon and Methabenzthiazuron were only found in the flesh of fish. Seasonal variations showed a difference between dry seasons and rainy seasons in most of the active molecules identified. Also, the average values of the active molecules showed significant differences (p < 0.05) between water, sediments and fish. The presence of pesticides in the flesh of ready-to-eat farmed fish could have impacts on human health.
Keyword: Pesticides, Farm Fish, Oreochromis niloticus, Seasonal Variation, Ivory Coast

Issues of Coexistence of PCI-DSS and ISO 9001 Standards Electronic Banking and Certification in Morocco: Potential, Risks and Perspectives
47-57
Adil Chebir, Adil Echchelh and Omar Taouab
Abstract:
The main payment systems require the compliance with the security requirements that make up PCI-DSS standard. This standard applies to any company that stores, processes or transmits card data. Naturally, this includes banks, merchants, or payment service providers. Nevertheless, the bank holds a very important position among other stakeholders including its customers and the card networks. Satisfying these two stakeholders involves managing the risks associated with their interests. This data is mainly reflected in the regulatory risk related to the non-compliance with the requirements imposed by the main payment systems as well as the operational risk related to the loss of a part of its customers.
To address those constraints, the institutions issuing payment cards are led to adopt strategies based on modern techniques of quality management including the adoption of principles based on the international standard ISO 9001 while confirming PCI-DSS standard. It is through ISO 9001 and PCI-DSS that these institutions can refer to recognized standards of quality and compliance. The major challenge of these institutions is to have a Quality approach allowing the cohabitation of ISO 9001 and PCI-DSS standards. It is in this context that this article intervenes.
Keyword: Quality Management, Payment, Holders, Security, Card, Transactions, ISO 9001, PCI-DSS, Risk


Comparative Study on the Antibacterial Activities of Neem Oil, Mustard oil and Black Seed Oil Against Pathogenic Staphylococcus aureus, Klebsiella pneumoniae, Salmonella Typhi and Pseudomonas Aeruginosa
58-67
Sharmin Sultana, Nishat Anzum Shova, Akash Ahmed and M. Mahboob Hossain
Abstract:
The study was aimed to determine the antimicrobial activity of commercially available Neem oil, Mustard oil and Black seed oil against some disease causing organism such as Staphylococcus aureus, Klebsiella pneumoniae, Salmonella typhi and Pseudomonas aeruginosa. The antibacterial activity of these oil against selected pathogens were determined by dilution method, disc diffusion and agar well diffusion method. Pathogens were collected from a tertiary hospital and the pathogenicity was determined by DNAse, Coagulase and Blood Agar hemolysis test. All three essential oil tested showed antibacterial activity against Staphylococcus aureus, Klebsiella pneumonia and Salmonella typhi. Black seed oil and Neem oil showed the highest rate of antibacterial activity even at very low concentration. In case of all three pathogens, inhibition of growth caused by Neem oil was more than 99%. Black seed oil inhibited the growth of Staphylococcus aureus by 100% and by 99.97% in case of Klebsiella pneumonia. Mustard oil exhibited antibacterial activity against the tested bacteria by dilution method but no zone of inhibition was found by agar disc diffusion or agar well diffusion method. Pseudomonas aeruginosa exhibited very low degree of sensitivity to Mustard oil and Black seed oil. However, Neem oil showed antibacterial activity against Pseudomonas aeruginosa by dilution method only. The results showed that all these oils can be a good source of antibacterial agent. The encouraging results also indicate that these oils should be exploited as natural antibiotic for the treatment of many infectious diseases caused by these pathogens, and will be helpful in understanding the relations between ancient cures and current medicines.
Keywords: Natural Antimicrobial agent, Disc diffusion method, well diffusion method, pathogenic bacteria, zone of inhibition


The Relation between National Culture and Organizational Culture within the Public Administration
68-82
Leonardo Antonio Siervo da Motta and Josir Simeone Gomes
Abstract:
This study aims to present different approaches related to culture, national culture and organizational culture, proposing a reflection on the influence of national culture on organizational culture, contextualizing the discussion within the Brazilian public administration. Initially, the concepts related to the issue are listed, with the later exposition of the typologies of Hofstede and Barros and Prates. Next, the article addresses specific aspects of Brazilian culture, with emphasis on personalism, paternalism and the Brazilian way. In the continuity of the study, an analysis of the public management in Brazil is carried out and theoretical currents are presented that approach the relation between national culture and organizational culture, complemented by data of the public administration. In conclusion, the article points to the importance of considering the relationship between national culture and organizational culture and broadening the discussion to the public administration.
Keywords: Culture; national culture; organizational culture; public administration