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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 428 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
AAS Open Research     Open Access   (Followers: 2)
ABC Journal of Advanced Research     Open Access  
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 18)
Acta Materialia Transilvanica     Open Access  
Acta Nova     Open Access   (Followers: 1)
Acta Scientifica Malaysia     Open Access  
Acta Scientifica Naturalis     Open Access   (Followers: 3)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 13)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 10)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access   (Followers: 1)
Advances in Science and Technology     Full-text available via subscription   (Followers: 17)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 8)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 2)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 4)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 2)
American Academic & Scholarly Research Journal     Open Access   (Followers: 6)
American Journal of Applied Sciences     Open Access   (Followers: 27)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 15)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Anadolu University Journal of Science and Technology A : Applied Sciences and Engineering     Open Access  
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Anales del Instituto de la Patagonia     Open Access  
Annali dell'Istituto e Museo di storia della scienza di Firenze     Hybrid Journal  
Applied Mathematics and Nonlinear Sciences     Open Access  
Apuntes de Ciencia & Sociedad     Open Access  
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 6)
Archives of Current Research International     Open Access   (Followers: 1)
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 7)
ARPHA Proceedings     Open Access   (Followers: 4)
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access   (Followers: 1)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Journal of Advanced Research and Reports     Open Access   (Followers: 2)
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 2)
Asian Journal of Scientific Research     Open Access   (Followers: 3)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 7)
Australian Field Ornithology     Full-text available via subscription   (Followers: 4)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 7)
Avances en Ciencias e Ingeniería     Open Access  
Avrasya Terim Dergisi     Open Access  
AZimuth     Full-text available via subscription   (Followers: 2)
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 3)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 10)
Berkeley Scientific Journal     Full-text available via subscription  
BIBECHANA     Open Access   (Followers: 2)
BibNum     Open Access  
Bilge International Journal of Science and Technology Research     Open Access   (Followers: 1)
Bioethics Research Notes     Full-text available via subscription   (Followers: 16)
Bistua : Revista de la Facultad de Ciencias Básicas     Open Access  
Bitlis Eren Üniversitesi Fen Bilimleri Dergisi     Open Access  
Bitlis Eren University Journal of Science and Technology     Open Access   (Followers: 1)
Black Sea Journal of Engineering and Science     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Butlletí de la Institució Catalana d'Història Natural     Open Access  
Celal Bayar Üniversitesi Fen Bilimleri Dergisi     Open Access   (Followers: 1)
Central European Journal of Clinical Research     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia & Natura     Open Access   (Followers: 1)
Ciencia Amazónica (Iquitos)     Open Access   (Followers: 1)
Ciencia en Desarrollo     Open Access   (Followers: 2)
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Ciencia y Tecnología     Open Access  
Ciencia, Docencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 2)
CienciaUAT     Open Access   (Followers: 1)
Citizen Science : Theory and Practice     Open Access   (Followers: 1)
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Communications in Applied Sciences     Open Access  
Comprehensive Therapy     Hybrid Journal   (Followers: 3)
Comunicata Scientiae     Open Access   (Followers: 1)
ConCiencia     Open Access  
Conference Papers in Science     Open Access   (Followers: 2)
Configurations     Full-text available via subscription   (Followers: 10)
COSMOS     Hybrid Journal  
Crea Ciencia Revista Científica     Open Access   (Followers: 3)
Cuadernos de Investigación UNED     Open Access  
Cumhuriyet Science Journal     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 15)
Current Research in Geoscience     Open Access   (Followers: 8)
Dalat University Journal of Science     Open Access  
Data     Open Access   (Followers: 4)
Data Curation Profiles Directory     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Dharmakarya     Open Access  
Diálogos Interdisciplinares     Open Access  
Digithum     Open Access   (Followers: 2)
Eastern Anatolian Journal of Science     Open Access  
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Elkawnie : Journal of Islamic Science and Technology     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access   (Followers: 1)
Epiphany     Open Access   (Followers: 4)
Episteme Transversalis     Open Access  
Ergo     Open Access  
Estação Científica (UNIFAP)     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 6)
Ethiopian Journal of Science and Technology     Open Access  
Ethiopian Journal of Sciences and Sustainable Development     Open Access   (Followers: 7)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 12)
European Scientific Journal     Open Access   (Followers: 10)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 2)
Extensionismo, Innovación y Transferencia Tecnológica     Open Access   (Followers: 5)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fırat Üniversitesi Fen Bilimleri Dergisi     Open Access  
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access  
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 378)
Frontiers for Young Minds     Open Access  
Frontiers in Climate     Open Access   (Followers: 3)
Frontiers in Science     Open Access   (Followers: 1)
Futures & Foresight Science     Hybrid Journal   (Followers: 4)
Gaudium Sciendi     Open Access   (Followers: 1)
Gazi University Journal of Science     Open Access  
Gaziosmanpaşa Bilimsel Araştırma Dergisi     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Global Journal of Science Frontier Research     Open Access   (Followers: 2)
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access  
Himalayan Journal of Science and Technology     Open Access   (Followers: 1)
Hoosier Science Teacher     Open Access  
Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / Journal of the Institute of Science and Technology     Open Access  
Impact     Open Access   (Followers: 2)
Indonesian Journal of Fundamental Sciences     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 3)
Indonesian Journal of Science and Technology     Open Access  
Ingenieria y Ciencia     Open Access   (Followers: 1)
Innovare : Revista de ciencia y tecnología     Open Access  
Instruments     Open Access  
Integrated Research Advances     Open Access  
Interciencia     Open Access   (Followers: 1)
Interface Focus     Full-text available via subscription  
International Annals of Science     Open Access  
International Archives of Science and Technology     Open Access  
International Journal of Academic Research in Business, Arts & Science     Open Access   (Followers: 2)
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Advancement in Education and Social Sciences     Open Access   (Followers: 1)
International Journal of Advances in Engineering, Science and Technology     Open Access   (Followers: 3)
International Journal of Applied Science     Open Access  
International Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
International Journal of Computational and Experimental Science and Engineering (IJCESEN)     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Engineering, Technology and Natural Sciences     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 12)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 5)
International Journal of Innovative Research in Social and Natural Sciences     Open Access   (Followers: 1)
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Recent Contributions from Engineering, Science & IT     Open Access   (Followers: 1)
International Journal of Research in Science     Open Access   (Followers: 2)
International Journal of Science & Emerging Technologies     Open Access   (Followers: 1)
International Journal of Sciences : Basic and Applied Research     Open Access  
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 7)
International Letters of Social and Humanistic Sciences     Open Access   (Followers: 1)
International Review of Applied Sciences     Open Access  
International Scientific and Vocational Studies Journal     Open Access   (Followers: 1)
InterSciencePlace     Open Access   (Followers: 1)
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigación Valdizana     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access  
Issues in Science & Technology     Free   (Followers: 7)
İstanbul Ticaret Üniversitesi Fen Bilimleri Dergisi / İstanbul Commerce University Journal of Science     Open Access  
Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze     Open Access  
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription   (Followers: 2)
Journal for New Generation Sciences     Open Access   (Followers: 3)
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 12)
Journal of Advanced Research     Open Access   (Followers: 3)
Journal of Al-Qadisiyah for Pure Science     Open Access   (Followers: 1)
Journal of Analytical Science & Technology     Open Access   (Followers: 6)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 3)
Journal of Big History     Open Access   (Followers: 3)
Journal of Composites Science     Open Access   (Followers: 3)
Journal of Critical Thought and Praxis     Open Access   (Followers: 2)
Journal of Deliberative Mechanisms in Science     Open Access  
Journal of Diversity Management     Open Access   (Followers: 4)

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Journal of Applied Sciences and Environmental Management
Number of Followers: 3  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1119-8362
Published by African Journals Online Homepage  [265 journals]
  • Toxicity comparison of water-accommodated fraction and chemically enhanced
           fraction of bonny light crude oil and dispersit SPC 1000 to mudskipper
           (Periophthalmus papilio) fish

    • Authors: E.J. Koranteng–Addo, M Horsfall Jnr., O.F. Joel, J.K. Bentum
      Abstract: This study assessed the physicochemical characteristics and toxicity of water-accommodated fraction (WAF) and chemically enhanced WAF (CEWAF) of Bonny Light Crude oil and Dispersit SPC 1000 (dispersant) to Mudskipper fish (Periophthalmus Papilio). There were variations in the levels of the physicochemical parameters. The coefficient of variation (CV) indicated that the temperature show the least variation of 2.24% and salinity the highest 98.12%.Hypothesis test for significant differences at p < 0.05 significance level however, showed that there were no significant differences in the levels of the measured parameters over the 96 hours. All the mudskippers fish samples exposed to the water accumulated water fraction of 10% bonny oil survived beyond 96 hours. An increase in toxicity of the oil was observed after 72-96 hour exposures of the mudskipper to the oil and dispersant CEWAF. For dispersant concentrations of 540 ml/L and 630 ml/L the survival of mudskippers was 80%. These mortalities might be due to the toxic effect of the dispersant, Dispersit SPC 1000.The Total Petroleum Hydrocarbon (TPH) and the Polycyclic Aromatic Hydrocarbon (PAH) in the test media were respectively 7.66-63.18 ppm and 0.82-5.26 ppm.10% Bonny light crude oil WAF had no effects on mudskipper survival. Exposures to 540 ml/L and 630 ml/L Dispersit SPC 1000 dispersed oil WAF (CEWAF) resulted in 20 % mortality. The lethal dose concentration was 885.5 ml/L (88.55%). The lowest observed effect concentration (LOEC) was found to be 540 ml/L.Keywords: Water-accommodated fraction, chemically enhanced fraction, Dispersant, Mudskipper fish
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Haemato-biochemical variations in estuarine crabs from a lagoon ecosystem

    • Authors: R.O. Moruf, A.O. Lawal-Are
      Abstract: Haematological profiles are often applied as an index of physiological condition of various organisms and thus provide information about the health status of local populations. The haematological and biochemical parameters of the estuarine crabs, Callinectes amnicola, Goniopsis pelii, Sersama huzardii and Uca tangerii from the polluted creek of Lagos Lagoon were examined using standard methods. C. amnicola (121.7±0.21) were significantly heavier than G. pelli (24±2.11 g), S. huzardii (16.15±15.19 g) and U. tangeri (8.8±0.5 g). Mean haematological values of the crabs revealed significant variations in total haemocyte count (THC), haemocyte sedimentation rate (HSR) and haemocyte subpopulation. THC in the circulating haemocytes of the crabs was similar for both G. pelli (2150±56.69 mL) and S. huzardii (1975.00±74.46 mL). HSR was lowest in G. pelli (1.50±0.71 mm/hr) and highest in U. tangeri (5.70±0.82 mm/hr). Haemocyte sub-population variables showed that eosinophil and basophil did not differ considerably among the crabs. Significant differences were however recorded for granulocyte, agranulocyte and monocyte with G. pelli having the highest sub-population of granulocyte (33.00±1.41 %) but lowest agranulocyte (67.00±1.41 %). Non-significantly higher sub-population of monocytes was recorded for C. amnicola (3.3±0.03). In the mean values of the serum biochemicals, U. tangeri showed lowest values for all except aspartate aminotransferase (22.8 U/L) and Urea (32.48 mg/dl). G. pelli showed highest values for serum protein (14.36mg/dl), Globulin (67.49 mg/dl) and phosphatase alkaline phosphatase (34.50 U/L). The study gave an indication of stress on the health status of the estuarine crabs, hence the need for periodic monitoring of the ecosystem.Keywords: Haematology, serum biochemistry, crab, Lagos Lagoon
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Solid waste characterization in Ethiope East Local Government Area of
           Delta State, Abraka, Nigeria

    • Authors: Obiajulu Peretomode
      Abstract: On-site waste characterization was carried out on four dumpsites in Abraka municipality with standard methods used. Results obtained show that the mean composition of organic waste was significantly higher in station 1 (38.15±2.03) than other stations, while paper waste (18.97±0.43), glass waste (1.84±0.18), metal waste (3.03±0.12) and other miscellaneous wastes were significantly higher in station 2 than other stations. Plastic waste was significantly higher in station 4 (7.85±0.29) than other stations. Wastes disposed carelessly spread to the road and to surrounding water bodies. Community participation in waste disposal can be a catalyst in community development work, because it gives residents a feeling of self-esteem, generates income through recycling and reduce waste material transported for disposal.Keywords: Solid waste; Municipal; Characterization; Composition
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Effect of degumming and catalyst type on physiochemical and biodiesel
           properties of tropical-almond (Terminalia catappa) seed oil

    • Authors: L Sani, V.O. Ajibola, S.E. Abechi
      Abstract: This study investigates the effect of degumming process and catalyst type on physiochemical and biodiesel properties of tropical-almond (Terminalia catappa) seed oil (TCSO) extracted via mechanical pressing and solvent extraction method. The oil was degummed using 4% citric acid in amount of 10% by volume of the oil to reduce the acid value, ash content, and water and sediment value of the degummed oil compared to the raw oil. Data obtained show that degumming process reduces the acid value, ash content and water and sediment value from 7.57 mg KOH/g, 0.86 %w/w and 2.48% to 3.82 mg KOH/g, 0.65 %w/w and 2.40% respectively, and the percentage oil yield was 56.30±1.50%. Biodiesel was produced using a two-step reaction system from raw and degummed TCSO catalyzed by NaOH, KOH and CaO/Al2O3. The process yielded a higher yield (97.20±0.35) of biodiesel from degummed oil catalyzed by CaO/Al2O3. The fuel properties of the biodiesels were found to fulfill both ASTM D6751 and EN14214 biodiesel standard except the raw biodiesel. this study confirm that degumming process improves the susceptibility of oil for biodiesel production and that heterogeneous base catalyst produce higher yield and quality fuel than their homogenous counterpart.Keywords: Degummed, Transeterification, Biodiesel, Catalyst, Raw oil, unsaturation
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Land Use/land cover change analysis using Markov-Based model for Eleyele
           Reservoir

    • Authors: H.O. Bello, O.I. Ojo, A.S. Gbadegesin
      Abstract: Land Use and Land Cover (LULC) are important components of the environmental system and changes in it mirror the impacts of human activities on the environment. These impacts needed to be determined in order to get a clear picture of the extent at which different land use practices affect hydrologic regime and water quality. Therefore, this study analyzed the effects of LULC on Eleyele reservoir for a period of 32 years. Landsat images of 1984, 2000 and 2016 covered by path 191 and rows 55 were acquired, a modified version of Aderson scheme of LULC classification was used to stratify the images, while the LULC map was analyzed and projected until year 2032 using IDRISI Selva 17.0 and ERDAS 2013 softwares respectively. Changes that have occurred within the study area were determined using LULC MARKOV. Land Use Land Cover built up area increased from 688.30 ha to 952.68 ha and from 952.68 ha to 2164.5 ha between years 1984 to 2000, and 2000 to 2016 respectively. LULC maps of 2000 and 2016 showed the open water also reduced from 101.6 ha in year 2000 to 61.74 ha in 2016. DEM showed that 8.5%, and 1.9% transitioned to vegetation cover and built up area in 1984 and 2000 respectively. Land Use Land Cover MARKOV chain analysis shows that by projection, the reservoir area will reduce further to 39.08 ha by the year 2032. The study has established that reserved forest zone suffered degradation with a noticeable increase in encroachment on the reservoir. LULC approach can be used to predict the effect of land use on reservoirs.Keywords: land use; land cover; analysis; model; Eleyele; reservoir
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Effects of storage on borehole water quality stored in plastic containers
           for prolong periods

    • Authors: E.I. Atuanya, O.M. Adeghe, E Iyahen
      Abstract: Water may become contaminated at any point between collection, storage and usage. This study examined the effects of storage on borehole water quality stored in plastic containers for prolong periods. Three brands of plastic containers filled with borehole water were collected from homes in Ugbowo, Benin city. Physicochemical parameters were determined using standard methods. Total bacterial and coliform counts were determined using the pour plate technique. Conductivity, TDS, Chloride, Sulphate and Nitrate were within the recommended standards while turbidity and total iron were above recommended standards. The isolates identified include: Klebsiella sp, Bacillus sp, E. coli, Pseudomonas aeruginosa, Aspergillus flavus, Saccharomyces sp and Aspergillus niger. The total bacterial count in the water samples ranged from 1.4×103cfu/ml to1.8×103cfu/ml at week four while fungal counts was 1.3×102cfu/ml to 1.6×102cfu/ml. Bisphenol A was discovered to leach at detectable levels from the plastic containers as storage increased. The result of the BPA analysis revealed that BPA congeners ranged from 0.023mg/l within days of collection to 0.251ml/l at the fourth week of storage. This study has shown that storage of borehole water in plastic containers for prolonged period affects the bacteriological and chemical properties of the water, hence storage of borehole water in plastic for prolonged periods should be discouraged and discontinued.Keywords: Plastic contaminant, borehole water, bisphenol A
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Pain coping strategies with functional disability and quality of life in
           patients with knee osteoarthritis in Lagos, Nigeria

    • Authors: A.I. Aiyegbusi, T Ishola, S.R.A. Akinbo
      Abstract: The significant impact of coping strategies on the experience of pain and disease outcome has been associated with cultural and environmental factors. There is a dearth of studies in this environment on the association of coping strategies with clinical symptoms in patients with OA knee. This study investigated the relationship among pain coping strategy, functional disability, pain and quality of life among patients with knee osteoarthritis in Lagos, Nigeria. Involved were 102 participants diagnosed with either bilateral or unilateral Knee OA. Numerical pain rating scale (NPRS), The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC osteoarthritis index), Pain coping inventory (PCI) and SF-36 Health survey were used to evaluate participants’ pain, functional disability, pain coping strategy and quality of life (QoL) respectively. Results showed a passive pain coping index (PPCI) score of 45.89±6.49 as against 26.5±43.61 for the active pain coping index (APCI). PPC strategies were significantly related positively with pain and functional disability (p<0.001; r = 0.380 and p= 0.001; r=0.334 respectively) but correlated negatively (p<0.001) with all domains of QoL except for mental health. On the other hand, APC strategies correlated negatively with pain and functional disability (p=0.092; r = -0.168 and p= 0.334; r= -0.131). Our findings thus suggest a significant association between PPCS and severe pain, functional disability and poor QoL while APCS was associated with a better quality of life in patients with knee OA. It is thus suggested that active pain coping strategies be  incorporated into the management of patients with OA knee.Keywords: Pain coping strategy, Knee osteoarthritis, Pain coping index, Numerical pain rating scale
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Assessment of Cr, Cd and Pb levels in tobacco leaves and selected
           cigarette samples from Ilorin Metropolis Kwara State, Nigeria

    • Authors: S.O. Azeez, I.O. Saheed, I.O. Ashiyanbola
      Abstract: The levels of Cr, Cd and Pb in tobacco leaves and some cigarette samples from Ilorin metropolis, Kwara State, Nigeria were collected and analyzed after wet digestion with a freshly prepared 65% HNO3 and 35% HCl using atomic absorption spectrophotometry Model No PM 8251 single pen recorder. The results obtained reveal the presence of Cr and Cd in all samples including tobacco leaves. However, Pb was not found in all the samples within the limit of determination. The concentration ranges of Cr and Cd in the samples are 60-100 μg/g and 4-20 μg/g respectively, which was found to be lower than the WHO standard.Keywords: Cigarettes, Tobacco, Heavy metals, Digestion
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Optimal routing for automated emergency vehicle response for incident
           intervention in a traffic network

    • Authors: L Ogunwolu, A Sosimi, O Jagun, C Onyedikam
      Abstract: Congestion constitutes a major problem in modern urban traffic networks if not well managed. Its monstrous effects, on occasions, can paralyze a traffic network eating deep into the productive hours of commuters as well as vehicles and persons on essential services. Particularly affected are incidence-intervention vehicles such as emergency vehicles and fire-fighting vehicles. Whatever the cause of the congestion, its effect is counter-productive and an indication of an inefficient traffic network. This work, as presented in this paper, is concerned about the issue of traffic route management for emergency service (emergency vehicle) for which a delay of few minutes may cause tremendous loss of lives and properties. The route management scheme built for this purpose integrates information obtained from the use of Radio Frequency Signals for Traffic Light Preemption at Intersections in a Proteus Simulator environment and the use Arc GIS as a mode of routing the emergency vehicle from base to the incidence location, then to Health Facilities and from thence back to the emergency vehicle base in an optimal routing time. Traffic information are loaded into the Arc GIS environment which predicts the required tri-legged optimal routing and its duration using Dijkstra’s algorithm. Different scenarios of emergency vehicle, incidence and health facility locations were exploited using the scheme and compared with situations without their implementation. The proposed scheme outperforms the trial and error routing of emergency vehicles and can be embedded into traffic advisory system or as stand-alone emergency vehicle management system.Keywords: GIS, Dijkstra’s algorithm, Facility Location, Emergency-Vehicle, Optimal Routing
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Evaluation of malaria infection among primary school pupils in urban and
           

    • Authors: A.N.C. Amadi, P.A.C. Ndukwe, U.J. Ekanem
      Abstract: Malaria Prevalence was studied among 250 pupils in two selected primary school between May to September 2015. Various blood samples were collected from pupils between the ages of 2 to 13 years. Thick and thin blood smears were prepared stained and examined microscopically for malaria parasites. Structured questionnaires were used to gather socio-demographic data, knowledge, attitude and practices of respondents regarding malaria. Out of 250 pupils examined 193 (77.20%) were infected with plasmodium, St. Theresa’s Primary School Ikot Osurua had a higher (71%) prevalence than those of St. Peter’s Primary School Ikot Inyang (81.40%). This was statistically significant (P<0.05). More females (82.90%) than males (70.81%) were infected though the difference was not statistically significant (P>0.05). Age groups 5 – 7 years had the highest (84.62%) prevalence, followed by 2 – 4 years (79.41%) than 8 – 10 years (76.19%) while 11 -13 years had the lowest (66.67%). This was not statistically significant. (P>0.05). Responses from questionnaires revealed that most respondents (83%) reported mosquito bites to be the cause of malaria infection, some (9.9%) attributes malaria to oily food while few (5%) reported the cause of malaria to be drinking dirty water. Many of the respondents should have adequate knowledge of the signs and symptoms. Fever (44.5%), dizziness (15.5%), Nausea (11%), cough (10%), vomiting (7.5%) were some of the symptoms reported. Preventive measures adopted by respondents revealed that majority (39%) use mosquito coils, some (31%) use insecticide spray, few (18.5%) use insecticide bed nets while others (11.5%) makes use of mosquito window nets. For treatment and management of malaria, most respondents visit patent medical store, while some ((48.5%) diagnose malaria in children through selfexamination and child’s complain (10.5%). While very few carry out laboratory tests. This study has shown that knowledge on management and preventive practices on malaria are very low in endemic areas. There is need for public health education programme and awareness for proper control of malaria.Keywords: Malaria, Pupils, Caregivers, Knowledge, Management Practices
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Total petroleum hydrocarbon content in surface water and sediment of
           Qua-Iboe River, Ibeno, Akwa-Ibom State, Nigeria

    • Authors: S.E. Inyang, A.B. Aliyu, A.O. Oyewale
      Abstract: The total petroleum hydrocarbon content in surface water and sediment of Qua Iboe River, Akwa Ibom State, Nigeria was assessed by randomly collecting samples from five sampling points of the study area and from a control site. The samples were extracted with dichloromethane (DCM) by liquid-liquid partition for water and Soxhlet extraction for sediments followed by subsequent clean up on column chromatography and analyzed by gas chromatography-flame ionization detection (GC-FID) for the determination of total petroleum hydrocarbons (TPH). The results showed variation of total petroleum hydrocarbon (TPH) content from 90 to 250 μg/L in the water and 270 to 830 mg/kg in the sediments, with mean value of 168.33±59.29 μg/L and 606.83±229.48 mg/kg respectively. The average amount of TPH in the water samples collected from all the sampling points was generally lower than the EU standard limit of 300 μg/L. However, the levels in the sediments exceeded the EGASPIN target value (50 mg/kg) for mineral oil but were below the intervention value (5,000 mg/kg), this indicates a serious impact of oil industrial activities on the area. Hence, our findings have indicated evidence that Qua Iboe River is under pollution threat and underscore the need for early remediation if adverse health defects are to be prevented.Keywords: Total petroleum hydrocarbon, GC-FID, surface water, sediments
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Synthesis and characterization of Cu (II) complexes of salicylate ligands

    • Authors: U.P. Ogodo, O.O. Abosede
      Abstract: This work evaluates the synthesis and characterization of Cu (II) complexes of salicylate ligands using green method. The complexes were synthesized by direct mixing of the metal salt (CuCO3) dissolved in water and a corresponding ligand dissolved also in water. The complex was obtained in excellent yields (80%) by moderate heating in distilled water. The complexes were characterized by Ultra-Violet Spectrophotometer (UV-Vis), solubility, melting point and X-ray diffraction. Metal complex with formula of Cu (II)-L2 where L = acetylsalicylic acid and salicylic acid were obtained. The ligands gave crystalline complexes as it bonds to the central metal (copper).Keywords: salicylicate, copper, coordination complex, UV/Vis spectrophotometery
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Opportunity costs of forest conservation in Wilberforce Island, Niger
           Delta, Nigeria

    • Authors: C.E. Andrew, P.A. Bariweni
      Abstract: The objectives of this study is to assess the acceptability and opportunity cost of forest conservation program as well as the impact of alternative source of income on forest conservation in the Wilberforce Island. Data were obtained from five communities through self-administered questionnaires and analysed as Proportions and ranked. Results showed that only 40.8% of the population favoured forest conservation, while 51.2% rejected forest conservation. However, when asked if forest conservation program would be accepted if an alternative source of income, equivalent to the net present value of forest conservation was provided, 64.0% of the respondents accepted forest conservation. In spite of increased acceptance of forest conservation following the provision of an alternative source of income, only 46.4% of the respondents believed this would help in preventing further deforestation in the Wilberforce Island. An assessment of the income level of respondents showed an average monthly income of ₦33,640.00 (₦403,680.00/$1,122.00 @₦360.00/$ per annum). For farmers and loggers, average monthly income was ₦23,648.00 (₦283,776.00/$788.00 per annum) and ₦46,577.00 (₦558,924.00/$1,553.00 per annum). This income level was estimated to be the opportunity cost of forest conservation in the Wilberforce Island. It was concluded that additional measures and an alternative income higher than currently earned can make forest conservation possible in the area.Keywords: Forest Conservation, deforestation, opportunity cost, Wilberforce Island
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Prevalence: knowledge, attitude and management practices of diabetes
           mellitus and hypertension in Amaoba Ikwuano Abia State Nigeria

    • Authors: A.N.C. Amadi, O.C. Amoke, P.O. Agbai
      Abstract: Screening study of diabetes mellitus and hypertension was carried out in Amaoba Ikwuano, Abia State, Nigeria to determine the prevalence of diabetes mellitus and hypertension and to access management practices of the diseases among the subject. Accu-check glucometer strip, blood pressure monitor, weighing balance, height metre were used for the study. Out of 260 subjects. 136(52.30%) were males and 124(47.70%) were female. The overall prevalence of diabetes mellitus and hypertension in the study area was 35.38% and 32.31% respectively. The prevalence of diabetes mellitus in the study area indicated that males (41.3%) were more affected than females (29.03%). Also male subjects are more hypertensive (38.25%) than females (28.81%). There is no significant difference with respect to sex (p< 0.05). Incidence of diabetes mellitus and hypertension showed that males within the age group of 61-70 years have the highest (38.89%) followed by females in the same age group (26.78%) and the least (2.94%) was among age group 20 -30 years in the study area. There was a significant difference between age and sex (p < 0.05). Body Mass Index (BMI) according to sex in relation to diabetes mellitus and hypertension showed that majority of overweight males (67.85%) and females (65.38%) are diabetic. Questionnaire analysis showed that majority of respondents were aware of diabetes mellitus. Most subjects (64.62%) have not been previously diagnose of diabetes mellitus. Knowledge on hypertension showed that most (96.15%) are aware of the disease and majority (67.69%) have not been previously diagnosed of the disease. Some respondent believed that diabetes is mainly caused by consumption of starchy food (31.62%), others identified the cause of hypertension to be obesity (39.26%). Management of diabetes mellitus were identified to be adhering to diet (29.31%). Whereas the management of hypertension were identified to be maintaining normal weight (33.57%). High blood pressure, diabetes mellitus and overweight are prevalent in the study area. There is need for proper health education in the communities for regular screening test and management practices to minimize or avert the risk of complications of late diagnosis.Keywords: Prevalence, Diabetes Mellitus, Hypertension, Management Practices
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Design and performance evaluation of a soundproof enclosure for a 2.5kVA
           generator

    • Authors: A.E. Amos, Y.P. Olisa, K Kotingo
      Abstract: The high level of noise that radiates from domestic generators in most parts of the neighbourhoods in Nigeria is becoming very much uncomfortable and constitutes nuisance to public serenity thereby creating noise pollution. This paper reports the design and performance evaluation of a soundproof enclosure for a 2.5 kVA generator. The purpose of this work was to reduce the sound pressure level (SPL) of the generator from a control value of 102 decibel to a comfortable noise level of about 86 decibel at a distance of 4 m. Material selection was done based on absorptivity, sound reduction coefficient of acoustic materials and the sizing of the absorber was done to determine the thickness required for lining the enclosure. Panel made of steel and sound absorbing material were used to control the noise propagation at its transmission path. Performance test of the soundproof device was carried out and SPL from the generator before and after the application of the enclosure were measured. This reveals a sound attenuation of 9.5, 12.9, 11.6, 12.2, 15.1, 14.5, and 15.5 dB at distances of 0.6, 1.2, 1.8, 2.4, 3.0, 3.6, 4.2 m respectively by using mineral wool with a noise reduction coefficient (NRC) of 0.78.Keywords: Attenuation, Decibel, Absorber, Sound pressure level
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Examining the physicochemical and microbial qualities and mineral content
           of selected brands of bottled water marketed and consumed in Asaba, Delta
           State, Nigeria

    • Authors: H.I. Owamah
      Abstract: The quality of bottled water sold in Asaba, Delta State, Nigeria, was investigated in this study. Six (6) brands of highly consumed bottled water were randomly selected for evaluation of physicochemical parameters, metallic and nonmetallic inorganic constituents, and microbial properties. The study revealed that physicochemical parameters such as pH, TDS and Chloride ranged between 6.63±0.03-7.54±0.02, 3.3±0.8-88.4±6.1 and 2.48±0.6-39.3±3.6 respectively, while the metal contents were highly variable amongst the bottled water examined. The study also showed from bacteriological analysis, that 5.2 % of tested samples had Klebsiella sp., Streptococcus faecalis and Pseudomonas aeruginosa. Values for the physicochemical and non-metal inorganic elements were below the prescribed maximum limits of the World Health Organization (WHO) and Standard Organization of Nigeria (SON). Generally, the bottled waters were found to be microbiologically safe, going by the results of total coliform and heterotrophic plate count and were also not contaminated by heavy metals. A direct comparison of the values obtained with the mineral water categorization system showed low mineral content and hence most suitable for low-sodium diets. The study recommends regular monitoring and analysis of bottled waters sold and consumed in Nigeria for quality assurance.Keywords: Bottled Water, Water Quality, Public Health, Regular Monitoring, Asaba
      PubDate: 2019-01-15
      Issue No: Vol. 22, No. 12 (2019)
       
  • Estimation of global solar radiation for Ikeja, Enugu and Kano, Nigeria

    • Authors: J.A. Akinpelu, O.K. Olawale, O.T. Omole
      Abstract: Estimations of global solar radiation based on a model of using normalized clearness index and normalized sunshine duration for a period of up to 25 years (1985-2010) for Ikeja (06.39°N, 03.20°E), Enugu (06.280N, 07.350E), and Kano (12.03 N, 08.32E), Nigeria for each climatological stations were established. The monthly average total solar radiation was also estimated. The reliability index of the calculation varies from 2.4 to 2.6 percent. The overall results show that for Kano, the received radiation on the plane surface is higher than for Ikeja and Enugu.Keywords: Global solar radiation, Clearness index, Sunshine duration, Reliability index
      PubDate: 2019-01-14
      Issue No: Vol. 22, No. 12 (2019)
       
  • Evaluation of biofilm and enterotoxin producing capacity of
           

    • Authors: C.O. Anie
      Abstract: This study is aimed at investigating biofilm and enterotoxin producing capacity of methicillin-resistant Staphylococcus aureus isolated from nostrils of healthy students of Delta State University Oleh campus. Three hundred (300) nasal samples were collected using sterile swab stick and the isolates were identified using relevant biochemical tests. Determination of methicillin-resistant Staphylococcus aureus was carried out with the aid of Oxacillin sensitivity disc to test the presence of penicillin binding protein2a (PBP2a). The Methicillin-resistant Staphylococcus aureus (MRSA) isolates were screened to determine their biofilm producing ability using crystal binding assay. Latex agglutination test was carried out to detect the presence of enterotoxins among the MRSA isolates. The incidence of MRSA colonization among healthy individuals in the community of the S. aureus isolated was 47 (48.9%). Enterotoxins B was mostly detected, only three Enterotoxin C were detected. All the MRSA isolates tested for the presence of biofilm showed positive results. It has been observed that MRSAs are capable of producing biofilms and enterotoxins which pose the risk antibiotic resistance and human Staphylococci toxicity.Keywords: Enterotoxins, Biofilm, Staphylococcus aureus
      PubDate: 2019-01-14
      Issue No: Vol. 22, No. 12 (2019)
       
  • Effect of Cola nitida on immediate post moderate-exercise cardiopulmonary
           response in young adult male

    • Authors: A Omorogiuwa, B.O. Eiya
      Abstract: The study aimed at evaluating post-exercise cardiopulmonary responses in young adult males who masticated and ingested Cola nitida prior to moderate exercise. The cardiopulmonary responses studied were heart rate, pulse pressure and respiratory rate. A total of 20 apparently healthy male volunteers were studied. They were subdivided into 4 subgroups A, B, C and D. The subjects in Group A served as control and were not given Cola nitida, while the subjects in groups B, C and D were given 100mg/kg, 200mg/kg and 400mg/kg of Cola nitida respectively. Prior to the exercise baseline cardiopulmonary parameter were recorded using standard clinical methods. The subjects subsequently chewed and ingested appropriate doses of Cola nitida. Ninety minutes post ingestion; they warmed up for 5 minutes and then mounted the threadmill at an inclination of 2% at 5mph for 30 minutes. Thereafter the immediate cardiopulmonary responses such as pulse rate, pulse pressure and respiratory rate were recorded one minute post exercise. Results were presented as Mean ± SD and analyzed using appropriate ANOVA with post hoc Tukey HSD test and p < 0.05 was considered statistically significant. Overall, Cola nitida potentiated (p < 0.05) the percentage increase in cardiopulmonary responses observed in this study. However, irrespective of the dose of Cola nitida ingested the percentage increase in pulse rates were not different (p > 0.05) amongst test groups. Cola nitida increases the post-moderate-exercise pulse rate, pulse pressure and respiratory rate in young male adults.Keywords: exercise, cola nitida, cardiopulmonary, young male
      PubDate: 2019-01-14
      Issue No: Vol. 22, No. 12 (2019)
       
 
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