Publications

Export 595 results:
Sort by: Author Title Type [ Year  (Desc)]
Submitted
Oke, MO, Martins O, Idowu OA, Fabiyi FD.  Submitted.  DETERMINATION OF RAINFALL - RECHARGE RELATIONSHIP IN ONA RIVER BASIN USING SOIL MOISTURE BALANCE METHOD. Ife Journal of Science. 16(2)oke_mo_et_al_9.pdf
Sorsa, T, Gursoy UK, Nwhator SO, Hernandez M, Tervahartiala T, Leppilahti J, Gursoy M, Könönen E, Emingil G, Pussinen PJ, Mäntylä P.  Submitted.  Analysis of matrix metalloproteinases, especially MMP-8. in gingival crevicular fluid, mouthrinse and saliva for monitoring periodontal diseases. 70:142–163., Number 1 Abstract
n/a
Samuel, T, Olagunju O, Nwhator S, Adara-Ali A, Obadipe J, Magbagbeola O.  Submitted.  An investigation on the seminal and periodontal bacteria diversity among subfertile males in Lagos. Unilag Journal of Medicine, Science and Technology. 7:1–17., Number 2 Abstract
n/a
Heikkinen, AM, Nwhator SO, Rathnayake N, Mäntylä P, Vatanen P, Sorsa T.  Submitted.  Pilot study on oral health status as assessed by an active matrix metalloproteinase-8 chairside mouthrinse test in adolescents. Journal of Periodontology. 87:36–40., Number 1 Abstract
n/a
2022
Daromosu, H, Morgan R, Adewara B.  2022.  Assessment of Retinal Nerve Fiber Layer Thickness in Nigerian Adults Using Spectral-Domain Optical Coherence Tomography, 2022/08/31. 30:63-68. Abstract

Objective: To measure the circumpapillary retinal nerve fiber layer (RNFL) thickness in normal eyes of Nigerian adults using spectral-domain optical coherence tomography (SD-OCT). Materials and methods: This was a cross-sectional study of normal eyes of Nigerian adults between July and September 2016 at the eye clinic of a tertiary hospital in Nigeria. Sociodemographic data, clinical history, and examination findings were obtained. Dipstick urinalysis and blood pressure measurements were performed. Circumpapillary RNFL thickness was measured with the Topcon 3D OCT-1 Maestro version 8.30 (Topcon Medical Systems, Inc., Oakland, NJ, USA), using the 3D optic nerve head analysis. Data were analyzed using the International Business Machine (IBM) Statistical Package for the Social Sciences (SPSS)Statistics, version 25.0 (IBM Corp., Armonk, NY, USA) and the level of significance was set at P < 0.05. Results: The study included 120participants (240 eyes) with an age range of 18 to 53 years and a mean age of 34.06 ± 7.64 years. There were 59 (49.17%) males and 61(50.83%) females. The average RNFL thickness in the right and left eyes was 112.26 ± 9.6 and 110.53 ± 9.14 mm, respectively. The average RNFL thickness for the Igbo ethnic group was 117.5 ± 7.69 and 115.04 ± 7.18 mm in the right and left eyes, respectively. The mean RNFL thickness for the inferior, superior, nasal, and temporal quadrants was 148.92 ± 15.77, 142.59 ± 16.48, 85.3 ± 15.39, and 71.89 ± 9.35 mm in the right eyes and 149.28 ± 16.03, 141.69 ± 13.33, 81.82 ± 13.59, and 68.8 ± 10.17 mm in the left eyes, respectively. Conclusion: This study showed the normal circumpapillary RNFL thickness values in Nigerian adults using SD-OCT. There were variations based on ethnicity that suggest it may be important to use ethnic-specific benchmarks when interpreting OCT results for the management of glaucoma.

2021
Famurewa, BA, Oginni FO, Adewara BA, Fomete B, Aniagor C, Aluko-Olokun B, Morgan RE, Amedari MKI.  2021.  Epidemiology of Blindness From Facial Trauma: A Multi-Centre Nigerian Study, dec. Craniomaxillofacial Trauma {&} Reconstruction. :194338752110609.: {SAGE} Publications AbstractWebsite
n/a
Talabi, A, Sowande O, Mosaku K, Owojuyigbe A, Amosu L, Adejuyigbe O.  2021.  Effect of parental presence on anxiety during induction of anaesthesia in children undergoing elective day case surgery, 2021/12/01. 17 Abstract

BackgroundSurgical operation and anaesthesia induction are fearful events which may interfere with the smooth conduct of anaesthesia and postoperative recovery in children. Indeed, the fear of needles, syringes and unknown hospital environment often compound their anxiety. Various modalities such as use of clowns, music, low intensity light in the induction room, pharmacological agents and parental presence during induction of anaesthesia have been utilized with the aim of gaining the cooperation of the children during induction. However, their use has yielded conflicting results. This prospective study was conducted among children whose ages were between 2 and 15 years. They were randomized into parental presence and parental absence (un-accompanied) or control groups. The anxiety levels of children and parents in both groups were compared at baseline, separation and during induction of anaesthesia.
Results
The ages of the children ranged between 2 and 15 years with a mean age of 6.78 ± 2.50 years. The mean age of patients in the parental presence at induction (PPIA) was 7.14 ± 3.68 years while in the control group was 6.42 ± 3.31 years. The difference was not statistically significant, p < 0.05. The mean anxiety score of patients in the PPIA at reception, separation and induction of anaesthesia were 26.6 ± 9.2, 38.4 ± 18.3 and 54.1 ± 22.8 compared to 27.3 ± 8.04, 41.4 ± 21.7 and 58.6 ± 23.1 in the control group respectively, p < 0.05. The mean anxiety score of parents in the PPIA at reception, separation and induction of anaesthesia were 52.2 ± 6.7, 51.7 ± 7.8 and 51.9 ± 7.9 compared to 53.0 ± 6.5, 52.4 ± 6.2 and 52.9 ± 7.9 in the control group respectively, p < 0.05. Among the cohort of preschool age group, children in the control group were more anxious at induction compared to the PPIA group, p = 0.01. As the age increases, the anxiety state of the children decreases, t = − 0.398, p < 0.001. The mean score of parental satisfaction in the PPIA and the control groups were comparable, 8.1 ± 7.1 vs 7.3 ± 1.1 respectively, p = 0.395.
Conclusion
The presence of parents during induction of anaesthesia did not influence the anxiety states of children in our study. Anxiety at induction tends to reduce as the age of patients increases.

Michael, O, Pitondo-Silva A, Silva L, Santos Ré A, Marcato P, Massaro T, Polizello A, Aires C.  2021.  Effect of Chitosan-Coated Nanostructured Lipid Carrier on Escherichia coli Biofilms, 2021/09/01. 11:1-8. Abstract

Antimicrobial delivery systems are useful tools to control biofilm growth on abiotic surfaces such as urinary catheter. The present study examined whether nanostructured lipid carriers coated with chitosan (NLC-chitosan) affected the growth of uropathogenic biofilms of Escherichia coli. NLC-chitosan was prepared using the emulsion and sonication method, and further characterized with respect to particle size, polydispersity index, and zeta potential. After determining the minimum inhibitory and bactericidal concentrations, E. coli biofilms were grown on catheter specimens (following a preliminary study in which E. coli was found to adhere better to the catheter surface than glass slide and plate). At the 48, 72, 96, and 120 h of growth, they were exposed to 0.9% NaCl solution (negative control), 0.12% chlorhexidine solution (positive control), or NLC-chitosan (final chitosan concentration of 0.28%). After 24 h of treatment, the biofilms were collected to analyze their bacterial viability. NLC-chitosan preparation had bimodal particle size distribution with mean size of 292.9 ± 2.5 nm and polydispersity index of 0.24 ± 0.03 and positive zeta potential (+19.1 ± 0.2) indicating the nanoparticle coating by chitosan. Compared with the control groups, NLC-chitosan affected bacterial viability of biofilms at all ages studied (p<0.05). NLC-chitosan can effectively control the growth of young and mature biofilms of uropathogenic E. coli.

Folayan, M, Arowolo O, Mapayi B, Chukwumah N, Alade M, Yassin R, El Tantawi M.  2021.  Associations between mental health problems and risky oral and sexual behaviour in adolescents in a sub-urban community in Southwest Nigeria, 2021/08/16. 21 Abstract
n/a
Folayan, M, Olanrewaju I, Brown B, El Tantawi M, Uzochukwu B, Ezechi O, M. Aly N, Abeldaño G, Ara E, Ayanore M, Ayoola O, Osamika B, Ellakany P, Gaffar B, Idigbe I, Ishabiyi A, Jafer M, Khan A, Khalid Z, Nguyen A.  2021.  Differences in COVID-19 Preventive Behavior and Food Insecurity by HIV Status in Nigeria, 2021/08/13. :3. Abstract
n/a
Folayan, M, Olanrewaju I, Brown B, El Tantawi M, Uzochukwu B, Ezechi O, M. Aly N, Abeldaño G, Ara E, Ayanore M, Ayoola O, Osamika B, Ellakany P, Gaffar B, Idigbe I, Ishabiyi A, Jafer M, Khan A, Khalid Z, Nguyen A.  2021.  Differences in COVID-19 Preventive Behavior and Food Insecurity by HIV Status in Nigeria, 2021/08/13. :3. Abstract

The aim of the study was to assess if there were significant differences in the adoption of COVID-19 risk preventive behaviors and experience of food insecurity by people living with and without HIV in Nigeria. This was a cross-sectional study that recruited a convenience sample of 4471 (20.5% HIV positive) adults in Nigeria. Binary logistic regression analysis was conducted to test the associations between the explanatory variable (HIV positive and non-positive status) and the outcome variables-COVID-19 related behavior changes (physical distancing, isolation/quarantine, working remotely) and food insecurity (hungry but did not eat, cut the size of meals/skip meals) controlling for age, sex at birth, COVID-19 status, and medical status of respondents. Significantly fewer people living with HIV (PLWH) reported a positive COVID-19 test result; and had lower odds of practicing COVID-19 risk preventive behaviors. In comparison with those living without HIV, PLWH had higher odds of cutting meal sizes as a food security measure (AOR: 3.18; 95% CI 2.60-3.88) and lower odds of being hungry and not eating (AOR: 0.24; 95% CI 0.20-0.30). In conclusion, associations between HIV status, COVID-19 preventive behaviors and food security are highly complex and warrant further in-depth to unravel the incongruities identified.

Folayan, M, Ibigbami O, Brown B, El Tantawi M, Uzochukwu B, Ezechi O, M. Aly N, Abeldaño G, Ara E, Ayanore M, Ayoola O, Osamika B, Ellakany P, Gaffar B, Idigbe I, Ishabiyi A, Jafer M, Khan A, Khalid Z, Nguyen A.  2021.  Differences in COVID-19 Preventive Behavior and Food Insecurity by HIV Status in Nigeria, 2021/08/13. :3. Abstract

The aim of the study was to assess if there were significant differences in the adoption of COVID-19 risk preventive behaviors and experience of food insecurity by people living with and without HIV in Nigeria. This was a cross-sectional study that recruited a convenience sample of 4471 (20.5% HIV positive) adults in Nigeria. Binary logistic regression analysis was conducted to test the associations between the explanatory variable (HIV positive and non-positive status) and the outcome variables-COVID-19 related behavior changes (physical distancing, isolation/quarantine, working remotely) and food insecurity (hungry but did not eat, cut the size of meals/skip meals) controlling for age, sex at birth, COVID-19 status, and medical status of respondents. Significantly fewer people living with HIV (PLWH) reported a positive COVID-19 test result; and had lower odds of practicing COVID-19 risk preventive behaviors. In comparison with those living without HIV, PLWH had higher odds of cutting meal sizes as a food security measure (AOR: 3.18; 95% CI 2.60-3.88) and lower odds of being hungry and not eating (AOR: 0.24; 95% CI 0.20-0.30). In conclusion, associations between HIV status, COVID-19 preventive behaviors and food security are highly complex and warrant further in-depth to unravel the incongruities identified.

Adewinbi, S, Taleatu B, Maphiri V, Fasakin O, OMOTOSO E, Oyedotun K, Manyala N.  2021.  Characterization of two-way fabricated hybrid metal-oxide nanostructured electrode materials for photovoltaic and miniaturized supercapacitor applications, 2021/07/27. 119:106699. Abstract

Portable electronic devices require a small volume self-powered energy system that can combine fabrication of energy harvesting and storage devices in one plane. This study focuses on fabricating novel all-oxide photovoltaic and supercapacitor devices based on MoO 3 , V 2 O 5 , and Co x O y thin electrodes prepared by a two-electrode cell arrangement. The fabricated devices were tested using solar simulator and potentiostat at ambient temperature. The power conversion efficiencies of the fabricated photovoltaic devices were found in the range of 0.17-0.39% depending on buffer layer characteristics. It therefore suggests that V 2 O 5 and MoO 3 can buffer photovoltaic processes by lowering the conduction band offset in the proximate Co x O y absorber. Pseudocapacitive behavior of MoO 3 /Co x O y ||MoO 3 /Co x O y and V 2 O 5 /Co x O y ||V 2 O 5 /Co x O y planar devices showed that they delivered maximum specific areal capacity values of 0.694 and 0.778 μAhcm − 2 respectively at discharge current density of 0.1 mAcm − 2. They also showed considerably low reduction in energy density (about 38.7%) even at a remarkable increase in power density of about 450% (at a high current density of 1.0 mAcm − 2). In addition, the symmetric microsupercapacitors showed excellent retention of capacity even after 5000 cycles. These results generally indicate the reliability of the fabricated devices in the development of portable electronic components for energy application.

Folayan, M, Olanrewaju I, El Tantawi M, Brown B, M. Aly N, Ezechi O, Abeldaño G, Ara E, Ayanore M, Ellakany P, Gaffar B, Al-Khanati N, Idigbe I, Ishabiyi A, Jafer M, Khan A, Khalid Z, Lawal F, Lusher J, Nguyen A.  2021.  Factors Associated with Financial Security, Food Security and Quality of Daily Lives of Residents in Nigeria during the First Wave of the COVID-19 Pandemic, 2021/07/27. 18:7925. Abstract
n/a
Folayan, M, Ibigbami O, El Tantawi M, Brown B, M. Aly N, Ezechi O, Abeldaño G, Ara E, Ayanore M, Ellakany P, Gaffar B, Al-Khanati N, Idigbe I, Ishabiyi A, Jafer M, Khan A, Khalid Z, Lawal F, Lusher J, Nguyen A.  2021.  Factors Associated with Financial Security, Food Security and Quality of Daily Lives of Residents in Nigeria during the First Wave of the COVID-19 Pandemic, 2021/07/27. 18:7925. Abstract

An online survey was conducted to identify factors associated with financial insecurity, food insecurity and poor quality of daily lives of adults in Nigeria during the first wave of the COVID-19 pandemic. The associations between the outcome (experience of financial loss, changes in food intake and impact of the pandemic on daily lives) and the explanatory (age, sex, education level, anxiety, depression, HIV status) variables were determined using logistic regression analysis. Of the 4439 respondents, 2487 (56.0%) were financially insecure, 907 (20.4%) decreased food intake and 4029 (90.8%) had their daily life negatively impacted. Males (AOR:0.84), people who felt depressed (AOR:0.62) and people living with HIV -PLHIV- (AOR:0.70) had significantly lower odds of financial insecurity. Older respondents (AOR:1.01) had significantly higher odds of financial insecurity. Those depressed (AOR:0.62) and PLHIV (AOR:0.55) had significantly lower odds of reporting decreased food intake. Respondents who felt anxious (AOR:0.07), depressed (AOR: 0.48) and who were PLHIV (AOR:0.68) had significantly lower odds of reporting a negative impact of the pandemic on their daily lives. We concluded the study findings may reflect a complex relationship between financial insecurity, food insecurity, poor quality of life, mental health, and socioeconomic status of adults living in Nigeria during the COVID-19 pandemic.

Maphiri, V, Rutavi G, Sylla N, Adewinbi S, Fasakin O, Man-Yala N.  2021.  Novel Thermally Reduced Graphene Oxide Microsupercapacitor Fabricated via Mask-Free AxiDraw Direct Writing, 2021/07/27. 11:1909. Abstract

We demonstrate a simple method to fabricate all solid state, thermally reduced Graphene Oxide (TRGO) microsupercapacitors (µ-SCs) prepared using the atmospheric pressure chemical vapor deposition (APCVD) and a mask-free axiDraw sketching apparatus. The Fourier transform in-frared spectroscopy (FTIR) shows the extermination of oxygen functional groups as the reducing temperature (RT) increases, while the Raman shows the presence of the defect and graphitic peaks. The electrochemical performance of the µ-SCs showed cyclic voltammetry (CV) potential window of 0-0.8 V at various scan rates of 5-1000 mVs −1 with a rectangular shape, depicting characteristics of electric double layer capacitor (EDLC) behavior. The µ-SC with 14 cm −2 (number of digits per unit area) showed a 46% increment in capacitance from that of 6 cm −2 , which is also higher than the µ-SCs with 22 and 26 cm −2. The TRGO-500 exhibits volumetric energy and power density of 14.61 mW h cm −3 and 142.67 mW cm −3 , respectively. The electrochemical impedance spectroscopy (EIS) showed the decrease in the equivalent series resistance (ESR) as a function of RT due to reduction of the resistive functional groups present in the sample. Bode plot showed a phase angel of −85° for the TRGO-500 µ-SC device. The electrochemical performance of the µ-SC devices can be tuned by varying the RT, number of digits per unity area, and connection configuration (parallel or series).

Mahmoud, B, Mirghni A, Oyedotun K, Fasakin O, Manyala N.  2021.  Nanoplatelets ammonium nickel-cobalt phosphate graphene foam composite as novel electrode material for hybrid supercapacitors, 2021/06/01. 883:160897. Abstract

Nanoplatelets NH4(NiCo)PO4·H2O and NH4(NiCo)PO4·H2O/GF composites were synthesized through a hydrothermal approach and used as actively positive electrode for hybrid supercapacitor. Electrochemical performances of the samples were carried out in both the 3and 2-electrode measurements in 1 M KOH solution. The composite NH4(NiCo)PO4·H2O/GF exhibited an improved specific capacity of 111 mAh g⁻¹ over the pristine NH4(NiCo)PO4·H2O material with a 100 mAh g⁻¹, which was obtained at 0.5 Ag⁻¹. Moreover, an assembled hybrid device NH4(NiCo)PO4·H2O/GF//AC revealed maximum specific energy of 47 Wh kg⁻¹ and specific power of 468 W/kg at 0.5 Ag⁻¹. The device was subjected to a long-term stability test of over 10,000 GCD cycles and could retain about 70% of its initial capacity and also proved a columbic efficiency of 99.8% at 10.0 A g⁻¹. Interestingly, the device could preserve a 1.14 V of its initial potential window of 1.4 V after being subjected to a 72 h self-discharge test, showing an efficiency of 81.4%. Based on the results discussed on this work, the NH4(NiCo)PO4·H2O/GF composite could be an excellent candidate as future energy storage material, specifically supercapacitors.

Chen, KJ, Duangthip D, Gao S, Huang F, Anthonappa R, Oliveira B, Turton B, Durward C, El Tantawi M, Attia D, Heima M, Muthu S, Maharani D, Folayan M, Phantumvanit P, Sitthisettapong T, Innes N, Crystal Y, Ramos-Gomez F, Chu C-H.  2021.  Oral Health Policies to Tackle the Burden of Early Childhood Caries: A Review of 14 Countries/Regions, 2021/06/01. 2:670154. Abstract
n/a
Nguyen, A, Brown B, El Tantawi M, Ndembi N, Okeibunor J, Mohammed A, Folayan M.  2021.  Time to Scale-up Research Collaborations to Address the Global Impact of COVID-19 – A Commentary, 2021/06/01. 8:277-280. Abstract
n/a
Oyedotun, K, Mirghn A, Fasakin O, Mahmoud B, Tarimo D, Manyala N.  2021.  Activated Carbon Derived from Biomass-Waste Okra As High-Performance Electrodes for Use in Supercapacitors, 2021/05/30. MA2021-01:495-495. Abstract
n/a