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Articles by A.A. Adeniyi
Total Records ( 3 ) for A.A. Adeniyi
  A.O. Ogunfowokan , O.I. Asubiojo , A.A. Adeniyi and E.A. Oluyemi
  Moss samples Barbula lambarenensis (P. Vard) were taken along major and minor roads of Ile-Ife, in the South Western part of Nigeria and were analysed after triple acid digestion for the trace metals: Lead, Zinc and Copper by Graphite Furnace Atomic Absorption spectrophotometry. The triplicate field data were averaged to yield mean concentrations at each sample location. The lead and zinc levels ranged from 196.8 (0.04)-108.5 (0.03) μg g-1 and from 593.1 (0.02)-35.0 (0.10) μg g-1 dry weight, respectively in the moss samples. These results from the analysis of the moss samples show that Pb and Zn levels were generally higher in areas with relatively high traffic density than low traffic density areas. Similar studies on Copper gave lower values (47.0 (0.01)-10.1 (0.01) μg Cu g-1) dry weight in the samples which did not show any correlation with traffic density. Analysis of standard plant reference materials (BCR:CRM 062) gave results Pb 26.7 (0.10); Zn 17.4 (0.46) and Cu 45.8 (0.40) which are found to be in good agreement with the certified values for Pb 25.0 (1.5); Zn 16.0 (0.7) and Cu 46.6 (1.8). The average traffic volumes of the study area are 990 vehicles per hour and 520 vehicles per hour for high and low traffic density areas, respectively.
  B.I. Onyeanusi , A.A. Adeniyi , C.G. Onyeanusi , J.O. Ayo and C.S. Ibe
  A morphometric study was carried out on the kidney of the Wistar Rat (WR) using standard laboratory procedures. The mean live weight of the Wistar rat was found to be 140.625±3.078 g. The average kidney weight was 0.605±0.012 g. The right kidney, with a mean weight of 0.632±0.012 g, was significantly (p<0.05) heavier than the left (0.596±0.022 g). The male kidneys were larger than those of the female and the values obtained were 0.633±0.091 g and 0.572±0.132 g, respectively. The relative thickness of the medulla was 5.6. This value (5.6) indicates a high index for the length of the loop of Henle, which acts as a counter current multiplier system and directly increases the ability of the kidney to produce hypertonic urine. This high index thus suggests that the Wistar rat is anatomically adapted within its urinary system (kidney) for water conservation. Furthermore, the present study has provided a baseline morphometric data on the kidney of the Wistar rat in the Northern Savannah zone of Nigeria.
  B.I. Onyeanusi , A.A. Adeniyi , J.O. Ayo , C.S. Ibe and C.G. Onyeanusi
  A comparative study was carried out on the urinary system of the African Giant Rat (AGR) and the Wistar Rat (WR) using standard laboratory procedures. The mean liveweight of the AGR and WR were 863.590±33.740 and 140.625±6.078 g, respectively. The mean kidney weight of the male and female AGR and WR were 2.119±0.062, 2.053±0.009, 0.633±0.091 and 0.572±0.132 g, respectively. It was observed that the mean kidney weight in the male was higher than that of the female in both AGR and WR but the difference was not significant (p>0.05). The mean weight of the right kidney was heavier than that of the left kidney in both the AGR and WR. The mean weight of the right kidney of the AGR was 2.21±0.051 g while, the left was 2.00±0.055 g. The mean weight of the right kidney in the WR was 0.633±0.012 g while, the left was 0.596±0.022 g. No significant difference (p>0.05) was obtained in the thickness of the bladder and its length in both AGR and WR but there was a high significant difference (p<0.001) between the ureter length of the AGR and the WR. The length of the right ureter was longer than the left and the female had a slightly longer ureter than the male in both rats. The relative thickness of the medulla, which is an indicator of the length of the loop of Henle, was 4.297 in the AGR while, that of the WR was 5.6. The higher relative thickness of the medulla (5.6) signifies that the kidney of the WR has an anatomical adaptation for the concentration of urine and thus, better conservation of water in the arid zone while, the lower relative thickness of the medulla (4.2) of the AGR suggests lack of appropriate anatomical adaptation in the kidney for conservation of water. The study has also provided a baseline morphometric data on the urinary system of both the AGR and WR in the Northern Guinea Savannah zone of Nigeria.
 
 
 
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