Temat: Abuja - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Appraisal of Abuja Master Plan Using GIS: A Case Study of Abuja Phase I, Federal Capital Territory, Abuja, Nigeria
Autorzy:: Amusa, Idowu Adigun
Ibe, Philip Ongboku
Akolo, Festus Olusanya
Powiązania:: https://bibliotekanauki.pl/articles/1178353.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Abuja
Geographic Information Systems and Database
Master plan
Opis:: The study designed and created a geospatial database for the entities in the study area. The database was subjected to test by issuing single criterion and multiple criteria queries. The single criterion query was issued to test the database on the number of parcels in the study area that are equal to or less than 1500 m2. This is the standard area of a plot when the Abuja Master plan was conceptualized. The query returned 642 parcels out of the 1490 parcels in the study area representing 43.09 percent of the total. The multiple criteria query was issued to show those parcels with more than 25,000 m2 and are developed. The query returned less than 1 percent; that is 11 parcels fall into this category. Buffering was carried out to see the level of compliance of buildings with the 3.0m setback from the fencing walls and the result returned 1725 buildings out of the 3822 buildings within the study area that did not comply with this rule. The parcels were also subjected to a setback of 20m from the river channels in the study area. The rivers were buffered with 20m and overlaid with the parcels. 133 parcels fall within the buffer zone. This is about 8.92 percent of the total parcels in the study area. The implication is that over 90 percent are safe in case there is flooding that spreads around that distance. Graduated colour renderer was used to classify the parcels using the sizes as parameter for the classification.
Źródło:: World Scientific News; 2017, 77, 2; 144-162
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Spatial Variation of Air Quality in Mpape Area of Abuja, Nigeria
Autorzy:: Ekoh, Harrison Charles
Powiązania:: https://bibliotekanauki.pl/articles/1031920.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Atmospheric Pollutant
Mpape Area of Abuja
Particulate Matters
Variables
Opis:: The study assessed air quality along selected area of interest in Mpape Area of the FCT, Nigeria. Particularly, it examined air quality variation in the heavily built areas, industrial areas, and control sites areas in Mpape. The experimental research was employed and air quality variables such as NH3, NO2, SO2, H2S CO2 and PM10 and PM25 were quantitatively gathered in the field using standard methods and equipments such as Minivol Portable Air Sampler, A set of Crow Can Dictator Meter, and GPS. Traffic volume along selected land uses in the three locations was obtained through traffic count approach. Data obtained were analyzed using averages, ANOVA, Pearson’s correlation, cluster analysis and Factor analysis. Across the studied locations, high content of carbon monoxide (CO2) was recorded in Arab Quarry District followed by Millennium Avenue and with mean values of 1.76 ppm and 1.50ppm respectively, while in the lowest concentration of CO2 was recorded in the Control site with a mean value of 1.18ppm. The range of SO2 in the present study is above FEPA recommended level of 0.10ppm. The range is also within WHO’s 24hrs allowable limit of 20ppm, the concentration of nitrogen dioxide (NO2) varied significantly among the different locations (F = 30.540, p<0.05). The concentration of ammonia (NH3) is ranged from 0.04 to 0.06ppm. The contents of atmospheric particulate matters (PM), PM2.5 and PM10 also varied among the selected locations. For PM2.5, it value ranged from 0.18 to 0.27μg/m3 which is slightly above the threshold of 0.25μg/m3 recommended by FEPA, mostly for ambient air quality in Angwan Gwari and Millennium Avenue areas. The range of PM2.5 is within WHO’s limit of 20μg/m3 for 24hrs mean concentration. Result of ANOVA showed that the concentration of PM2.5 varied significantly among the various locations (F = 10.758 p<0.05). Furthermore, for PM10, it value ranged from 0.16 to 0.26μg/m3 which is also slightly above the threshold of 0.25μg/m3 recommended by FEPA, mostly in Arab Quarry District and to some extent Angwan Gwari/ Millennium Avenue. These areas have increased concentrations of PM10. The range of PM10 reported in the present study is within WHO’s limit of 24hrs mean concentration of 50μg/m3. Also, result of ANOVA showed that the concentration of PM10 varied significantly among the various locations (F = 9.880 p<0.05). The result therefore means that Arab Quarry District and Angwan Gwari/ Millennium Avenue have high PM10 and PM2.5 concentrations. Cluster analysis classifies the principal pollutants of Mpape into two homogenous groups (SO2 and PM, and NO2) and also identifies anthropogenic activities (principally the combustion of fuel) as the primary source of emission of these groups of gases or pollutants into the atmosphere. Factor Analysis identified anthropogenic activities as the main sources of pollution of PM, NO2, SO2, NO and CO2 in Mpape environs. From the result of this research, there should be regular monitoring of atmospheric pollutants around the area in order to prevent the potential health and atmospheric related impacts of such air toxics in the region; Government should assist in the development of these new technologies that will enhance engine efficiency and reduce fuel consumption through the funding of research.
Źródło:: World Scientific News; 2020, 140; 79-112
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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