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Wyszukujesz frazę "Ajayi, O. O." wg kryterium: Autor

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    Wyświetlanie 1-9 z 9
    Tytuł:
    Determination of heavy metals of road deposited sediment in Ado-Ekiti, Nigeria using XRF Technique
    Autorzy:
    Ogunmodede, O. T.
    Ajayi, O. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/411774.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    X –Ray fluorescence (XRF) technique
    heavy metals
    soil pollution
    anthropogenic
    Opis:
    In this work x-ray fluorescence(XRF) technology was used to evaluate the soil pollution with heavy metals (K, Ti, Cr, Mn, Fe, Cu, Zr) in rain run-off deposited metal sediment of road side soil in Ado Ekiti, Nigeria. The investigated sediment of road side was collected in open places along the road at different districts in Ado Ekiti. XRF was carried out at the laboratory of Obafemi Awolowo University centre for energy research using handheld thermo scientific energy-dispersive XRF analyzer. The experimental result indicate that the concentration of heavy elements in Adebayo road is the highest level detected while the road at new Iyin road is lowest and they are greater than the level detected in a control soil collected from a zone situated far from the road. For the majority of metals, pronounced maximum, concentrations were detected in the site. Anthropogenic releases give rise to highest concentrations of the metals relative to the normal background values and in some locations their levels exceed the alert level admitted by the Nigeria guideline.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 2; 36-40
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On maximum induced matching numbers of special grids
    Autorzy:
    Adefokun, T. C.
    Ajayi, D. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/357751.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    induced matching
    grid
    maximum induced matching number
    strong matching number
    skojarzenie
    krata
    liczba skojarzona
    Opis:
    A subset M of the edge set of a graph G is an induced matching of $G$ if given any two edges $e_{1}; e_{2} \in M$, none of the vertices on $e_{1}$ is adjacent to any of the vertices on $e_{2}$. Suppose that $Max(G)$, a positive integer, denotes the maximum size of $M$ in $G$, then, $M$ is the maximum induced matching of $G$ and $Max(G)$ is the maximum induced matching number of $G$. In this work, we obtain upper bounds for the maximum induced matching number of grid $G = G_{n,m}, n \geq 9; m \equiv 3 \mod 4; m \geq 7, and nm$ odd.
    Źródło:
    Journal of Mathematics and Applications; 2018, 41; 5-18
    1733-6775
    2300-9926
    Pojawia się w:
    Journal of Mathematics and Applications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Clinical Manifestations of Plasmodium berghei ANKA Infection in Juvenile Mice: A Short Case Report
    Autorzy:
    Ajayi, J. B.
    Agbeyangi, A. O.
    Daniel, A.
    Omobolaji, I.
    Mogaji, H. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1113684.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    ECM
    Juvenile
    Malaria
    Mice
    Neonates
    Plasmodium berghei
    Opis:
    Malaria is an important health and development challenge in Africa, Animal models most particularly mice, have long been employed to study malaria pathogenesis. This paper describes clinical manifestations due to Plasmodium berghei ANKA infection in juvenile mice as a model for understanding the complications of congenital malaria in neonates. Forty-five juvenile mice (5-7 days old) were acquired from University College Hospital, Ibadan and injected with 2×107 (0.2 ml) Plasmodium berghei ANKA parasitized red blood cells (PRBCs). The mice were then transported to the study site, kept in well-ventilated cages and fed daily with a balanced ration. Post-P. berghei infection, the mice were monitored daily for mortality. Clinical manifestations of experimental cerebral malaria (ECM) were assessed and confirmed if at least ruffled fur, hunching, wobbly gait, limb paralysis, convulsions, or coma was observed. Each sign was given a score of 1. Animals with scores ≥4 were considered to have severe ECM. In the experiment, 20 (44%) mice were lost due to natural cause (i.e. stress) at day 2. Between day 4 and 9, 25 (56%) of the study mice presented clinical signs of ECM. This included: ruffled fur – 25 (100%), hunching - 21 (84%), wobbly gait - 17 (68%), limb paralysis - 20 (80%), convulsions - 25 (100%). Survival rate and severity of ECM in the mice differs, 22 (88.0%) had severe ECM and 3 (12.0%) had mild ECM. This study has shown that parasite establishment and malaria complications can manifest as early as 4 days’ post P. berghei infection in 5-7 days old mice.
    Źródło:
    World News of Natural Sciences; 2017, 14; 90-96
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regional Distribution of Malaria in Ekiti State, Nigeria
    Autorzy:
    Salau, Opeyemi R.
    Ewumi, Taofeek
    Owolabi, Bunmi E.
    Ajayi, Gabriel O.
    Ajayi, Oluwaseun E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192596.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Malaria
    Mosquito
    Rainfall
    Temperature
    Ekiti State
    Ado – Ekiti
    Population
    Plasmodium
    Opis:
    The impacts of fluctuations in weather and climate on malaria prevalence under a future climate change have been an issue of major interest because the disease is a public health problem. Thus, this study investigates the impacts of rainfall on the regional variations of malaria in Ekiti State, Nigeria using 2001-2011 data. The data are for the Central, Eastern, Northern, Western and Southern parts of Ekiti State which are represented by Ado, Ekiti East, Oye, Ekiti South West and Ijero LGAs respectively based on the available data. The results indicate that the total infections over the study period in Ado, Ekiti East, Oye, Ekiti South West and Ijero LGAs are 207033, 67890, 80827, 55986 and 87521 cases respectively. The malaria disease is most rampant among the youths in all the LGAs while the observed cases within the female populations are also slightly higher than the mean infections in the male group. Similarly, an increase in rainfall intensity will lead to corresponding rise in the malaria cases while the spread of the disease seems to also depend on population distribution with the highest seen in the highly populated Ado LGA and among the youths that has the most population in the age groups. However, the disease could be reduced through improved personal hygiene, good drainage system, sleeping under insecticide treated mosquito nets, spraying of insecticides and access to good and affordable medical services. These findings might be used in establishing good immunization system for the vulnerable children and other age groups so as to curb the spread of the disease.
    Źródło:
    World Scientific News; 2016, 55; 89-100
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Breeds influence on growth ability and predicting body weight from linear body measurements of ducks at various ages
    Autorzy:
    Ologbose, F. I.
    Benneth, H. N.
    Ajayi, F. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031794.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Body weight prediction
    Duck Genotypes
    Growth performance
    Mallard
    Muscovy
    morphometric traits
    Opis:
    A total of one hundred and twenty ducklings (i. e. 60 Muscovy and 60 Mallard) were used for the study to evaluate the breeds effect on growth performance and prediction of body weight using linear body measurements of two breeds of ducks with the aid of General Linear Model and stepwise regression procedure of SPSS. Data on individual body weight (BW), body height (BH), body length (BL) breast circumference (BC), thigh length (TL), bill length (BIL), wing length (WL)and shank length (SL) of 120 ducks were collected on Muscovy and Mallard ducks and used to predict body weight at 4 and 8 weeks. The results showed that Muscovy (56.6t ± 6.7 – 1037.5 ± 30.29g) was significantly superior (P<0.05) to Mallard (51.8 ± 1.66 – 875.44 ± 70.30g) in body weight and in all the linear body measurements from day old to week 10. Individual body weight and linear body measurements was predicted at various ages (4 and 8 weeks) by genetic groups. The values of the coefficient of determination (R2) ranged from (88.6 – 97%) and (81.8 – 90.3%) in Muscovy and Mallard respectively at week 4. While, (R2) ranged from (58.7 – 92%) and 80.1 – 86.9%) in Muscovy and Mallard respectively at week 8. Since linear body measurements that can readily predict body weight without ducks being slaughtered, it is therefore, highly desirable as it will ensure the selection of animals that will reach market weight and size at relatively faster rate. This will also serve as a tool for breeders in selecting animals destined for use as breeding stock. These Muscovy and Mallard can be improved by exploiting the principle of phenotypic plasticity to obtain strains to complement other breeds of duck. Muscovy can also be used to upgrade some other indigenous ducks for better performance in a systematic breeding program.
    Źródło:
    World News of Natural Sciences; 2020, 29, 3; 282-289
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Knowledge Attitude and Practices of Caregivers on Management and Treatment of Childhood Malaria in Ogun State, South-Western Nigeria
    Autorzy:
    Agbeyangi, O. A.
    Sam-Wobo, S. O.
    Ekpo, U. F.
    Akinloye, O. A.
    Mafiana, C. F.
    Ajayi, J. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1179169.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ogun State
    South-western Nigeria
    home management of malaria
    treatment seeking behaviours
    Opis:
    Home management of malaria involves presumptively treating febrile children at clinic or near home with antimalarial drugs distributed by trained members of the community provide medications and educate primary caregivers about treatment of malaria and recognition of severe illness. Structured questionnaires were administered to the parents, health workers and patent medicine vendors to determine acceptability of rectal artesunate and treatment seeking behaviours. Data obtained were analyzed using SPSS version 20 to assess association with p-value of < 0.05. Current first line antimalarial drug for treating childhood malaria at the PHCs was artesunate derivatives (90.3%) with no usage of chloroquine derivatives (0%) and common route of administration was intra-muscular (81.4%) with least usage of rectal (6.2%). Patent medicine vendors showed that the common drug derivatives purchase for treating childhood malaria was chloroquine derivatives (89.2%) with oral (91.9%) as most common route of administration and no awareness of rectal route (0%). Cases of resistance of malaria parasites to anti-malarial drugs, mostly chloroquine derivatives (89.3%) and least with artesunate derivatives (7.1%) observed by health workers. Incomplete dosage (95.6%) and fake drug (84.9%) were described as main factors responsible for malaria parasite resistance. Patent medicine vendors have come across cases of resistance of malaria parasites to anti-malarial drugs mostly chloroquine derivatives (93.2%) with drug abuse (89.2%) and fake drug (82.4%). Treatment of malaria is challenged by inadequate health-care infrastructure and community-based interventions.
    Źródło:
    World Scientific News; 2017, 83; 62-74
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Participatory development of demand-driven curriculum for career-ready e-extension services in Nigeria
    Autorzy:
    Deji, O.F.
    Opayinka, A.O.
    Ajayi, A.O.
    Adesoji, S.A.
    Adisa, B.O.
    Ojo, T.F.
    Alabi, D.L.
    Ayinde, J.O.
    Agboola, A.F.
    Filusi, O.J.
    Oladele, O.I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081174.pdf
    Data publikacji:
    2021
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    participatory curriculum
    career- ready
    e- extension services
    stakeholders
    Nigeria
    Opis:
    This paper described and contextualized participatory development of demand-driven curriculum for career-ready e-extension services in Nigeria as introduced by the Sasakawa Africa Fund for Extension Education. The stages of participatory development were participatory need assessment, participatory stakeholders’ workshop and validation among 124 stakeholders selected as key informants in relation to agricultural extension training, delivery, end users and policy makers. The stakeholders were grouped as follows: community leaders and policy makers; extension agencies / organisations / institutions / employers; farmers; input suppliers / marketers / agro-based traders / other value actors; and potential candidate groups. Stakeholder meetings were held separately with different groups three times, and then a combined meeting took place. The aggregated major decisions/consensus were subjected to content analysis using ATLAS.ti. The validation process included reading of each agreed decision to all participants, then participants indicated their agreement or otherwise, which led to either rejection or acceptance of the decision. This paper concludes that participatory curriculum development has enhanced the stakeholders to identify areas of demand-driven training in response to community needs. The stakeholders preferred more online than face-to-face training. The major perceived advantages of e-extension were reduced risk, time and cost effectiveness while infrastructural and human challenges were the perceived challenges that could possibly hinder the smooth running of eextension.
    Źródło:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2021, 21[36], 3; 14-23
    2081-6960
    Pojawia się w:
    Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of a UAV-based system for the semi-automatic estimation of the volume of earthworks
    Autorzy:
    Ajayi, Oluibukun G.
    Oyeboade, Timothy O.
    Samaila-Ija, Hassan A.
    Adewale, Taiwo J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1444927.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    Unmanned Aerial Vehicle
    earthworks
    stockpile volume estimation
    spatial data
    Digital Elevation Model
    bezzałogowy statek powietrzny
    roboty ziemne
    dane przestrzenne
    cyfrowy model wysokości
    Opis:
    One of the challenges faced by surveyors in acquisition of accurate spatial data for mining applications is the risk involved in acquiring data in rugged terrains and difficult or inaccessible areas. With the advent of modern technology, accurate geospatial data can now be safely obtained for proper mining documentation periodically. The use of Unmanned Aerial Vehicles (UAVs) for data acquisition in mine surveying has been a viable means of obtaining reliable geospatial data rapidly and efficiently. The main goal of this study is to develop a semi-automatic UAV-based system for the acquisition of spatial data required for the estimation of the volume of earthworks. A DJI Phantom 4 quadcopter was used for the acquisition of image data of the project site, while the images were processed into a Digital Elevation Model (DEM) using Pix4Dmapper v2.0.1, which was then imported into the MATLAB-based system developed for the automatic estimation of the volume of earthworks. The volume obtained from the automated system was thus compared with the volume obtained directly from the Pix4Dmapper software, having specified a contour interval of 1 and an allowable error rate of ±3% as the standard error. While ±1.02% error was observed in the volume estimated using the Pix4Dmapper, the developed automated system yielded an estimated precision of ±0.81% in its volume estimation, which proves to be more robust for automatic volume estimation in terms of accuracy and precision.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2020, 110; 21-28
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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