European Journal of Scientific Research

Volume 160 No 4
December, 2021

Production et Caractérisation Physico-Chimique, Microbiologique et Sensorielle D’une Bière Artisanale A Base de Miel

YAO Konan Mathurin, KAMBIRE Ollo, KARAMOKO Detto, DIAKITE Moussa Moro and Rose KOFFI-NEVRY
Abstract:
Ce travail est une contribution à l’amélioration de la qualité d’une bière artisanale à base de miel. L’objectif principal était de produire et de faire une caractérisation physico-chimique, microbiologique et sensorielle de cette bière. La démarche méthodologique a consisté à produire sept différentes bières (B10%, B20%, B30%, B40%, B50%, B60% et B70%) à base de miel en utilisant 1% de levure (Saccharomyces cerevisiae) pour la fermentation alcoolique. Les méthodes conventionnelles ont été utilisées pour déterminer les paramètres physico-chimiques, microbiologiques et sensoriels des bières produites. Les microorganismes recherchés et détectés dans le miel au cours de cette étude sont les germes aérobies mésophiles, les coliformes, les levures et moisissures. L’espèce Staphylococcus aureus n’a pas été retrouvée dans le miel. Toutes les bières produites ont un pH acide qui varie entre 4,04 et 3,73 et les valeurs de l’acidité titrable sont comprises entre 1,3 et 7,41 méq/mL. Les teneurs en sucre totaux varient selon la concentration du miel dans la bière et elles se situent entre 2,78 à 14,65 mg/mL. Le taux d’alcool enregistré pour les différentes bières produites varie entre 1,92 et 5,05. La bière B60% a été la plus appréciée suivie de B70% par les panelistes. Ces bières ont été acceptées respectivement par 83,33 et 66,67 % des panelistes au niveau de l’arôme. Pour ce qui est de la saveur, ces bières ont été acceptées respectivement par 83,33 et 73,33 % des dégustateurs. Sur le plan hygiénique, les différentes bières produites ne renferment pas de germes pathogènes. En tenant compte du taux d’alcool et du résultat de l’analyse hédonique, la bière B60% est la meilleure. La dilution de 60 % constitue donc la dilution optimale pour la production finale de la bière artisanale à base de miel.
Keywords: Miel, bière, dilution, qualité, fermentation alcoolique, Saccharomyces cerevisiae.


Theoretical Half-life Time and Alpha Energies of the Elements: Part-9; Z=109 (Mt)—Island of Stability

Bahjat R. J. Muhyedeen
Abstract:
This paper is the ninth part of a series of eighteen of QAM-UQAM-NMT-2017-Ver-3&4. The atomic masses of Meitnerium are calculated based on the novel mass quantization and the variable neutron mass concepts of my new nuclear theory, the Nuclear Magneton Theory of Mass Quantization, NMT. Three methods for prediction of the α-decay half-life formulae, the Viola-Seaborg, the Royer GLDM, and the Sobiczewski-Parkhomenko, are applied to evaluate the alpha half-life of the atomic masses theoretically calculated. NMT found out 14 isotopes belong to Meitnerium (Mt) element that have long alpha half-lives T1/2 and three of them exceed 10E5 years. NMT considered them as part of the Island of stability. In the previous article, NMT found out 20 isotopes belonging to Z=108 (Hs) that have long T1/2 and 3 isotopes exceed 10E10 year.
Keywords: half-life, alpha decay atomic masses, new isotopes, superheavy nuclei


Impact of Teenage Outmigration on Child Wellbeing in a Tourism Destination of Cross River State

Frank, M. Attah., Ushie, M. A.,Edem Edong., Odey Stephen Adi., Inah Emmanuel Mkpe.,Eja Eja Iwara
Abstract:
Teenage outmigration has become a serious issue that has reduced youth population in most communities in Cross River State. This paper is anchored in the impact of teenage outmigration on child wellbeing in Cross River State taking into consideration Obudu Local Government Area. Questionnaire was used as an instrument for data collection. Random sampling technique was used in the administration of the questionnaires. A total of sixty copies of questionnaire were administered to the respondents which constitute the sample size used for the study. One hypothesis was stated and tested using the analyses of variance. The research finding reveals that lack of parental care and early marriage were the major causes of teenage outmigration in the study area. The result from the stated hypothesis shows that there is no significant influence of child well-being and outmigration in the study area. However, it is on this note that adequate measure be put in place to reduce and monitor the menace of teenage outmigration in the area.
Mots-Clefs: Outmigration, Communities, Child well-being, Teenager, Population.


Spatial Distribution of Healthcare Services and Population Needs in Calabar Metropolis, Nigeria

Emeka Josephat O., Arwen Vincent Otesse., Ushie Christiana Aleye, Itu Prince-Charles Omin.,Eteng Edet Enang., Eja Iwara Eja
Abstract:
Population growth and health services provision is fundamental issue that needs urgent attention in Calabar Metropolis. This research is anchored on spatial distribution of population growth and healthcare provision in Calabar Metropolis. A total of one hundred and thirty eight healthcare facilities provided were sampled and Global Positioning System (GPS) was used to map out the spatial distribution of the sampled facilities. Seven hundred and seventy one structured questionnaires were administered to sampled household. The data collected and analyzed revealed that no part of the metropolis is without any health facility. It was noticed from the result/findings that primary and secondary healthcare services are concentrated in the central part of Calabar South and Calabar Municipality even though the primary healthcare services have a wider spread and more evenly distributed compared to the secondary healthcare services in the study area. The research finding also indicate that poor funding, poor service delivery, lack of medical personnel and untrained staff were the major challenges that are associated with the healthcare services delivery in the study area. It is on premise that adequate measure must be put in place to ensure effective healthcare service provision and service delivery in the study area.
Keywords: Population growth, Healthcare Services, Spatial Distribution, Global Positioning System, Calabar Metropolis.


Advancing Food Security and Household Income in Rural Southern Cross River: Descriptive Analysis of the Impact of Commercial Agricultural Development Project (CADP)

Iloeje, Ijeoma A., Ering, Simon O., Osonwa, Kalu O., Ojong, Felix Eb., Agb, A. M. Ogaboh, and Angioha, Pius U.
Abstract:
The study examines the impact of the World Bank Sponsored Commercial Agriculture Development (CADP) Project on food security and household income in Southern Cross River State, Nigeria. To achieve the study's objective, data was collected from 400 participants out of 1217 beneficiaries in Southern Senatorial District of Cross River State. The samples were selected using stratified, proportional and purposive sampling techniques. The data needed for the study was collected using a self-developed structured questionnaire. Data collected was analyzed using descriptive statistics such as simple percentages, frequency distribution and table, and simple regression at 0.05 level of significance. The finding showed that the commercial agriculture development project has a significant impact on advancing food security and improving household income. Based on these findings, the study recommends expanding the commercial agriculture development project to include more beneficiaries and value chains.
Keywords: Commercial Agriculture Development Project, Food Security, Household income, Southern Cross River


Monitoring Shoreline Changes Using Digital Aerial Photographs, Quick-Bird Image and DGPS Topographic Survey: Case of the East Coast of Algiers, Algeria

Makhlouf Boutiba and Salim Bouakline
Abstract:
The aim of this paper is to map and analyze the historical shoreline changes of the east coast of Algiers.
The rates of shoreline changes along the east coast of Algiers was obtained from the corrected aerial photographs from different (1959, 1972, 1980, 1984, 2003) missions, the Quick-Bird data acquired in 2006 and the Differential Global Positioning System (DPGS) topographic risings measured between 2007 and 2008. The information obtained from the above methods were brought into a designed GIS environment, which allowed rapid display, reprojection, digitization and simultaneous measurements of data acquired at different time periods.
The results of this study showed that the coast exhibited a tendency toward generalized erosion; the net rate of shoreline loss recorded during the mid-centennial period 1959-2008, varied between -0.18 m/yr and -1.66 m/yr according to the locations. Importantly, the difference between these two values indicates a longitudinal sedimentary transfer that operated along this coast. The recorded annual sediment balance along this coast is negative (i.e. denoting a loss of sediment) at about -17328 m3/yr.
Keywords: Coastal erosion, Shoreline (changes), Aerial Photographs, Quick-Bird, Cartography, DGPS, GIS.