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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 426 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: 20)
Acta Materialia Transilvanica     Open Access  
Acta Nova     Open Access   (Followers: 1)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
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  
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)
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: 14)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
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  
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 6)
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  
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  
BJHS Themes     Open Access  
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  
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: 2)
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: 2)
Cuadernos de Investigación UNED     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: 3)
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)
Discover Sustainability     Open Access   (Followers: 3)
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: 6)
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)
Experimental Results     Open Access  
Extensionismo, Innovación y Transferencia Tecnológica     Open Access   (Followers: 3)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access  
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 372)
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  
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)
History of Science and Technology     Open Access  
Hoosier Science Teacher     Open Access  
Iberoamerican Journal of Science Measurement and Communication     Open Access  
Impact     Open Access   (Followers: 2)
Indian Journal of History of Science     Hybrid Journal  
Indonesian Journal of Fundamental Sciences     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 4)
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 Culture and Modernity     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 12)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 6)
International Journal of Innovative Research in Social and Natural Sciences     Open Access   (Followers: 2)
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: 3)
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  
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   (Followers: 1)
Issues in Science & Technology     Free   (Followers: 7)
Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze     Open Access  
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     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 Alasmarya University     Open Access  
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: 6)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of Integrated Science and Technology     Open Access  
Journal of Interaction Science     Open Access   (Followers: 1)
Journal of Kerbala University     Open Access   (Followers: 1)
Journal of King Saud University - Science     Open Access   (Followers: 1)
Journal of Law, Information and Science     Full-text available via subscription   (Followers: 20)

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Global Journal of Pure and Applied Sciences
Number of Followers: 0  
 
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ISSN (Print) 1118-0579
Published by African Journals Online Homepage  [263 journals]
  • Effects of vitamin C, E and garlic on serum enzymes and lipid profile of
           tramadol-induced toxicity in Wistar rats

    • Free pre-print version: Loading...

      Authors: L.K. Eban, G.I. Ekpo, R.U. Ukpanukpong, P.O. Aigbadumah, M.U. Eteng
      Pages: 1 - 9
      Abstract: This research work was aimed at investigating the effects of vitamin C, E and garlic interaction on tramadol induced toxicity in Wistar rats. Thirty five (35) rats were used for the study and rats were shared into five study groups namely; the positive control group fed with water and rats pellets, the negative control group was induced with tramdol only, the TmVC group in which 0.2mg of tramadol was induced and 0.2ml of vitamin C were administered, The TmVE group in which 0.2 mg of tramadol was induced and vitamin E was administered. The TmG group in which 0.2mg of tramadol was induced and garlic was administered. The body weight, organ weights and serum enzyme activities of the rats were monitored during the experimental period. The enzyme activity level of ALT remained constant in the positive control and negative control groups but began to rise in  the TmVC group in which vitamin C was administered and kept rising in the TmVE group and the most significant increase came in the TmG group in which garlic was administered. AST was lower in all of the groups in which tramadol was administered compared to the positive control (group one) with the highest drop in the TmG group in which garlic was administered. ALP, however, showed significant decrease in all the groups except TmG when compared to the positive control at (P<0.05). High density lipoprotein was relatively low in negative control when compared to positive control at (P<0.05). High density lipoprotein was high in antioxidants treated groups compared to negative control at (P<0.05). The low density lipoprotein was high in negative control when compared to positive control. The antioxidant treated groups showed no significant decrease in low density lipoproteins when compared to negative control group.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.1
      Issue No: Vol. 27, No. 1 (2021)
       
  • Phytochemical and proximate analysis of ipomoea cairica tuber

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      Authors: Godson N. John, Godpower C. Onwugbuta, Daniel Chima
      Pages: 11 - 16
      Abstract: The analyses for nutrients of Ipomoea cairica tuber were carried out and the phytochemical and proximate parameters were determined. The phytochemical analyses looked into the alkaloid, flavonoid, cyanogenic glycoside, tannin, phytate and saponin contents of Ipomoea cairica tuber while the proximate composition determination was aimed at the protein, carbohydrate, moisture, lipid, ash and fibre contents. The methods applied for these analytical determinations were mainly those of the Association of Official Analytical Chemist (AOAC, 2005). Each type of analysis (whether proximate or phytochemical) were carried out in triplicate and the mean values determined. The phytochemical analyses showed that Ipomoea cairica tuber had; flavonoid (1.52±0.03 %), Alkaloid (2.10±0.28 %), Tannin (0.05 %), Saponin (1.24±0.04 %), Cyanogenic glycoside (0.05 %), and phytate (0.02 %). The proximate analysis showed that Ipomoea cairica tuber had; Carbohydrate (11.7±0.1 %), protein (4.2±0.2 %), ash (0.6±0.1 %), lipid (0.51±0.07 %), moisture (72.7±0.2 %), and fibre (10.3±0.6 %). These results show that Ipomoea cairica tuber can be used as a substitute for other mostly consumed carbohydrate foods like yam and cocoyam.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.2
      Issue No: Vol. 27, No. 1 (2021)
       
  • Assessing attitudes and high-risk practices to HIV/AIDS infection among
           the people of Lake Chad basin, Borno State, Nigeria

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      Authors: A.J. Onoja, S.B. Mohammed, Y. Ya'aba, M. Liman, J. Njab
      Pages: 17 - 26
      Abstract: A cross sectional quantitative survey that obtained information on high risk behaviours which expose individuals to sexually transmitted infections (STIs) especially HIV was carried out in Lake Chad Basin of Borno among 1,790 volunteers. A well-structured questionnaire was developed and used to collect the desired baseline sociodemographic characteristics by direct interview of respondents in their houses among the populations living in the ordinary households, the mobile population and vulnerable population group (VPG) not living in the households were interviewed in their places of abode with discretion. The mean age range of the participants was 32.5 years (SD + 2.21) ranging from 15 to 49 years. 1,234 (68.9%) of the respondents were males while 556 (31.1%) were females. The prison inmates had the highest prevalence of STIs, 37% of the respondents didn’t know that they were at risk of contracting HIV. The knowledge of HIV status was higher among the males (80.2%) than the females (19.3%). The use of male and female condom was higher among the rural (19.2%) than the urban (10.8%) respondents. This study revealed high risk practices among the respondents even though there is tremendous HIV test intake across both the general and vulnerable populations, there is need for more awareness as rate of risk perception is very low.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.3
      Issue No: Vol. 27, No. 1 (2021)
       
  • Duration of exposure dependent effect of carbamate treated net on serum
           lipid profile of Wistar rats

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      Authors: R.U. Ukpanukpong, L.K. Eban, G.I. Ekpo, U.I. Aletan, D.D. Asuquo
      Pages: 27 - 34
      Abstract: The duration of exposure dependent effect of Carbamate treated net on serum lipid profile of female Wistar rats was investigated in this study. Eighteen (18) animals were randomly divided into three (3) study groups with six (6) rats each. Group 1 was designated as the control group while groups 2 and 3 constituted the experimental groups containing rats exposed to Carbamate treated net for 30 and 60 days respectively. The rats were exposed daily to Carbamate treated net by whole body and nose inhalation mode of exposure. The body weight of rats was measured at the commencement of the experiment and at the end of the experiment. The organ weight result obtained indicated that the body weight increased significantly in the rats of the experimental groups when compared to the rats in the control group at p<0.05. The result obtained indicated that the body weight increased significantly in the rats of the experimental groups when compared to the rats in the control group at p<0.05. The total cholesterol (TC), triacylglycerol (TG), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) concentrations in the sera of the rats were determined at the end of the experiment. The result obtained showed that the TC, TG, HDL-C and LDL-C levels increased significantly in the rats of the experimental groups when compared to the rats in the control group at p<0.05. The observation from this study suggests that long-term exposure to Carbamate treated net in household setting may alter the level of the serum lipid profile of the experimental animals, thereby leading to various health complications.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.4
      Issue No: Vol. 27, No. 1 (2021)
       
  • The class of (n,m)power-A-quasi-hyponormal operators in semi-Hilbertian
           space

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      Authors: Djilali Bekai, Abdelkader Benali, Ali Hakem
      Pages: 35 - 41
      Abstract: The concept of K-quasi-hyponormal operators on semi-Hilbertian space is defined by Ould Ahmed Mahmoud Sid Ahmed and Abdelkader Benali in [7]. This paper is devoted to the study of new class of operators on semi-Hilbertian space H, ∥. ∥Acalled (n,m)power-A-quasi-hyponormal denoted [(n,m)QH]A.We give some basic properties of these operators and some examples are also given .An operator T ∈ BA(H) is said to be (n,m) power-A-quasi-hyponormal for some positive operator A and for some positive integers n and m if T⋕((T⋕)mTn— Tn(T⋕)m)T≥A or equivalently AT⋕((T⋕)mTn— Tn(T⋕)m)T≥0
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.5
      Issue No: Vol. 27, No. 1 (2021)
       
  • A new Weibull Exponentiated Inverted Weibull Distribution for modelling
           positively-skewed data

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      Authors: J.O. Braimah, J.A. Adjekukor, N. Edike, S.O. Elakhe
      Pages: 43 - 53
      Abstract: An Exponentiated Inverted Weibull Distribution (EIWD) has a hazard rate (failure rate) function that is unimodal, thus making it less efficient for modeling data with an increasing failure rate (IFR). Hence, the need to generalize the EIWD in order to obtain a distribution that will be proficient in modeling these types of dataset (data with an increasing failure rate). This paper therefore, extends the EIWD in order to obtain Weibull Exponentiated Inverted Weibull (WEIW) distribution using the Weibull-Generator technique. Some of the properties investigated include the mean, variance, median, moments, quantile and moment generating functions. The explicit expressions were derived for the order statistics and hazard/failure rate function. The estimation of parameters was derived using the maximum likelihood method. The developed model was applied to a real-life dataset and compared with some existing competing lifetime distributions. The result revealed that the (WEIW) distribution provided a better fit to the real life dataset than the existing Weibull/Exponential family distributions.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.6
      Issue No: Vol. 27, No. 1 (2021)
       
  • Comparison of outlier detection techniques in non-stationary time series
           data

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      Authors: Sampson Twumasi-Ankrah, Simon Kojo Appiah, Doris Arthur, Wilhemina Adoma Pels, Jonathan Kwaku Afriyie, Danielson Nartey
      Pages: 55 - 60
      Abstract: This study examined the performance of six outlier detection techniques using a non-stationary time series dataset. Two key issues were of interest. Scenario one was the method that could correctly detect the number of outliers introduced into the dataset whiles scenario two was to find the technique that would over detect the number of outliers introduced into the dataset, when a dataset contains only extreme maxima values, extreme minima values or both. Air passenger dataset was used with different outliers or extreme values ranging from 1 to 10 and 40. The six outlier detection techniques used in this study were Mahalanobis distance, depth-based, robust kernel-based outlier factor (RKOF), generalized dispersion, Kth nearest neighbors distance (KNND), and principal component (PC) methods. When detecting extreme maxima, the Mahalanobis and the principal component methods performed better in correctly detecting outliers in the dataset. Also, the Mahalanobis method could identify more outliers than the others, making it the "best" method for the extreme minima category. The kth nearest neighbor distance method was the "best" method for not over-detecting the number of outliers for extreme minima. However, the Mahalanobis distance and the principal component methods were the "best" performed methods for not over-detecting the number of outliers for the extreme maxima category. Therefore, the Mahalanobis outlier detection technique is recommended for detecting outlier in nonstationary time series data.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.7
      Issue No: Vol. 27, No. 1 (2021)
       
  • A two-pronged truncated deferred sampling plan (TTDSP) for log-logistic
           distribution

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      Authors: S.O. Elakhe, J.O. Braimah, E.M. Ogbeide, O. Ikpotokin
      Pages: 61 - 68
      Abstract: This paper is aimed at developing a new truncated sampling plan that uses information from precedent and successive lots for lot disposition with a pretention that the life-time of a particular product assumes a Log-logistic distribution. A new Two-pronged Truncated Deferred Sampling Plan (TTDSP) for Log-logistic distribution is proposed when the testing is truncated at a precise time. The best possible sample sizes are obtained under a given Maximum Allowable Percent Defective (MAPD), Test Suspension Ratios (TSR) and acceptance numbers (c). A formula for calculating the operating characteristics of the proposed plan is also developed. The operating characteristics and mean-ratio values were used to measure the performance of the plan. The findings of the study show that: Log-logistic distribution has a decreasing failure rate; furthermore, as mean-life ratio increase, the failure rate reduces; the sample size increase as the acceptance number, test suspension ratios and maximum allowable percent defective increases. The study concludes that the new minimum sample sizes were smaller which makes the plan a more economical plan to adopt when cost and time of production is costly and the experiment being destructive.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.8
      Issue No: Vol. 27, No. 1 (2021)
       
  • Simulation of geoelectrical responses of structures buried in freshwater
           and brackish water environments

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      Authors: Opeyemi Joshua Akinrinade, Tolulope Emmanuel Oginni, Elnalee Buyagao Baguya
      Pages: 69 - 83
      Abstract: Marine geoelectrical simulation offers the opportunity to predict matrix type, interstitial fluid and geometry of buried structures. In this research, simulation of geoelectrical responses over buried structures in freshwater and brackish water environments were tested. A model tank made of acrylic and housed within an iron frame was built for the experiment. The tank was filled with water and sieved sediment having grain sizes ≤1.18 mm, corresponding to very coarse sand to colloid. Four models were designed namely freshwater static model (FSM), brackish water static model (BSM), freshwater model with buried structures (FMBS), and brackish water model with buried structures (BMBS). A bamboo pipe, metal pipe and granite block were buried in the FMBS and BMBS. Physico-chemical parameters of the water which includes temperature (22.74 – 26.06 °C), salinity (0.07 – 15.72 psu), conductivity (153 – 25,420 μS/cm  and resistivity (5.6 x 103 – 6.6 x 103 Ω-cm) were measured. Dipole-dipole array using inter-electrode separation (a) of 5 cm and 1≤n≤5 was adopted. Resistivity measurements obtained were processed and inverted using non-linear least-square optimization technique. We present obtained results as contoured 2D resistivity structures. FSM and FMBS were characterized by relatively high resistivity values compared with the BSM and BMBS. The buried  materials were effectively resolved in the freshwater models, compared to the brackish water model due to higher contrast in resistivity between the material and saturating fluid. The bamboo pipe was not effectively delineated in the brackish water medium, as a result of the low resistivity contrast which exists between the medium and the material. Zones with high compaction are characterized by high resistivity values, while concealed channel structures were characterized by low compaction. Estimated depth were exact for the freshwater models but was over estimated by `∼12.5% in the brackish water models. Marine electrical resistivity method shows great potential in mapping structures buried in medium with high contrasting resistivity values, and sedimentary structures with varying degree of
      compaction.
      PubDate: 2021-03-05
      DOI: 10.4314/gjpas.v27i1.9
      Issue No: Vol. 27, No. 1 (2021)
       
 
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