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Characterisation for <i>Radioelements</i>over an Escarpment Feature(S): A Case Study of the Duku-Tarasa Gwandu Ridge Area of Birnin Kebbi NW Nigeria

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International Journal of Geosciences 2020年第8期11卷 529-543页

作者： A. Adamu o. ologe A. L. Ahmed A. Y. Sunusi Department of Applied Geophysics Federal University Birnin Kebbi Birnin Kebbi Nigeria Department of Physics Ahmadu Bello University Zaria Nigeria Department of Physics Usmanu Danfodio University Sokoto Nigeria

The paper presents results of radiometric investigations of an area (Duku-Tarasa) near the capital city of the State of Birnin Kebbi, NW Nigeria. The area of study is about 440 m × 420 m and encloses an Escarpment Feature/Structure on a sedimentary rock generally referred to as the Gwandu Formation. The Gwandu Formation (though not described in the paper) consists of continental lacustrine sediments and is the youngest Palaeogene Formation present in the Sokoto sector of the larger Iullemmeden Basin. The study measured, along some selected profiles across this escarpment feature, radiometric signatures using a Sim-Max G411 portable field gamma-ray spectrometer (giving counts for U, Th and K relative to the background values over the area), the ground total-field magnetic data (using the proton precession magnetometer) along those profiles and collected some (5) rock samples for flame photometry and AAS analyses towards the target proposition. Activity concentration levels due to potassium (K), uranium (U) and thorium (Th) were measured in the area along the five established profiles spaced at 50 metres. The results from these measurements and analyses were displayed (in Tables/histograms and gray level maps/images of concentrations of Uranium, Thorium and Potassium prospects) and interpreted (dismissing the magnetic data as seemingly passive as no filter was applied to the mapped data).

关键词： Gwandu Ridge Iso-Radiometric Contour Map Gamma Activity Gamma-Ray Spectrometry and Radioelements

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Characterisation for Radioelements over an Escarpment Feature(S): A Case Study of the Duku-Tarasa Gwandu Ridge Area of Birnin Kebbi NW Nigeria

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International Journal of Geosciences（地球科学国际期刊） 2020年第8期

作者： A.Adamu o.ologe A.L.Ahmed A.Y.Sunusi

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Haematological and Hepatic Responses of the African Catfish Clarias gariepinus to Sublethal Exposure of Industrial Effluents from ologe Lagoon Environs,Lagos,Nigeria

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Journal of Food Science and Engineering 2018年第5期8卷 198-209页

作者： Akintade o.Adeboyejo Edwin o.Clarke Ayofe M.Hammed Roseline o.Adaramoye Department of Fisheries Faculty of ScienceLagos State UniversityOjo-LagosNigeria

The present study is on the haematological and hepatic responses of the African catfish fingerlings Clarias gariepinus to sublethal toxicity of industrial effluents(IE)from the environment of ologe Lagoon,Lagos,*** fish were cultured in five concentrations of industrial effluents:0%(control),5%,15%,25%,and 35%.Trials were carried out in triplicates for twelve(12)*** culture system was a static renewable bioassay and was carried out in the fisheries laboratory of the Lagos State University,*** physico-chemical parameters:Temperature(°C),pH,conductivity(ppm)and dissolved oxygen(Do in mg/L)were measured in each treatment *** parameters:packed cell volume(PCV),red blood cells(RBC),white blood cell(WBC),neutrophil and lymphocytes etc.,and hepatological alterations were measured after 12 *** physico-chemical parameters showed that the pH ranged from 7.82±0.25~8.07±*** ranged from 1.92±0.66~4.43±1.24 mg/*** conductivity values increased with increase in concentration of *** the temperature difference remained insignificant with mean value range between 26.08±2.14~26.38±*** Do showed significant differences at pological results showed that *** had PCV ranging from 13.0±1.7~27.7±0.6,RBC ranged from 4.7±0.6~9.1±0.1,and neutrophil ranged from 26.7±4.6~61.0±1.0 amongst *** highest values of these parameters were obtained in the control and lowest at 35%.While the reverse effects were observed for WBC and lymphocytes,the liver shows normal liver cells in the control(0%),but at higher toxic levels,there were:vacoulation,destruction of the hepatic parenchyma,tissue becoming eosinophilic(*** towards Carcinogenicity)and severe disruption of the hepatic cord *** study therefore shows that disposal of effluents into the aquatic environment affects the health of fishes by impairing normal hepatic functions and hindering v

关键词： Haematology hepatology sublethal toxicity industrial effluents Clarias gariepinus ologe Lagoon

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