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Geochemical characterization of soils, sediments and waters around active and abandoned dumpsites in Lagos

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Chinese Journal Of Geochemistry 2006年第B8期25卷 131-132页

作者： Akinlolu F. Abimbola abiodun m. odukoya University of Ibadan Department of Geology Ibadan Nigeria Olabisi Onabanjo University Department of Earth Sciences Ago-Iwoye Nigeria

Distribution and geochemical significance of dibenzofurans,phenyldibenzofurans and benzo[b]naphthofurans in source rock extracts from Niger Delta basin,Nigeria

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Acta Geochimica 2020年第6期39卷 973-987页

作者： abiodun B.Ogbesejana Oluwasesan m.Bello Department of Applied Chemistry Federal University Dutsin-MaP.M.B.5001Dutsin-MaKatsina StateNigeria

The distribution and geochemical significance of dibenzofurans,phenyldibenzofurans and benzo[b]naptho-furans in source rocks from Niger Delta basin,Nigeria,were investigated by Rock-Eval pyrolysis and gas chro-matography--mass spectrometry(GC--mS).The data obtained from the source rocks evaluation showed that the rock samples contained type 1/III kerogen capable of generating oil and gas and were within immature to early mature *** relative abundance of the Cor,C1-and C2-dibenzofurans range from 1.75%to 29.82%,27.60%to 40.52%and 29.66%to 6889%,*** diben-zofurans were dominated by *** the C1-dibenzofurans,2-+3-methyldibenzofuran was the most abundant in the rock samples while 1-methy ldibenzofuran appeared to be the *** relative abundance of benzo[b]naphtho[1,2-d]furan(1,2]BNF),benzo[b]naph-tha[2,1-d]furan(2.1]BNF)and benzo[b]naphtha[2,3-d]fu-ran([2.3]BNF)in the rock extracts range from 12.01%to 52.58%,32.61%to 75.219%and 10.27%to 52.43%.The wide range of values recorded for the three isomers of benzo[b lnapthofurans in the samples suggest source rocks formed from mixed organic *** the pheny ldibenzofuran isomers,4-pheny ldibenzofuran was the most abundant while 1-phenyldibenzofuran was the *** ratio-1(PhFR-1)and pheny ldibenzofuran ratio-2(PhFR-2)values range from 0.13 to 1.20 and 0.11 to 2.11,*** resuls showed that the relative abundance of PhFR-1 and PhFR-2 increase gradually with increasing burial depth and maturity(VRo≤0.77%,mPI-1≤*** s 443℃),and have a good correlations with calculated vitrinite ***-I and maximum Temperature(Tmax)-This range of values suggested immature to early mature source *** source rocks were found to have shale and coul lithologics and deposited in a lacustrine/fuvial deltaic settings within immature to early mature stages based on the distribution of dibenzofurans,pheny ldiben-zofurans and benzo[b]naphthofurans in the source rock

关键词： Dibenzofurans Benzo[b]napthofurans Source rocks Niger delta Gas chromatography-mass spectrometry

Geochemical characterization of soils, sediments and waters around active and abandoned dumpsites in Lagos

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Acta Geochimica 2006年第S1期 131-132页

作者： Akinlolu, F. Abimbola abiodun, m. odukoya University of Ibadan Department of Geology Ibadan Nigeria Olabisi Onabanjo University Department of Earth Sciences Ago-Iwoye Nigeria

Acceptance of COVID-19 vaccine and its related determinants in Nigeria:An online survey

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World Journal of Virology 2024年第4期13卷 89-110页

作者： Eyiuche D Ezigbo Seyi S Enitan Esther N Adejumo abiodun E Durosinmi Richard Y Akele michael O Dada Grace E Itodo Abah m Idoko Okeoghene m Edafetanure-Ibeh Edwin N Okafor Adedeji A Abdulsalam Oyekan I Oyedoyin Polit U Yelpoji Ogunwola O Opeyemi Ogbuji S Nmesomachi Adesola O Oyekale Chisom B Onyeji Haemostasis and Thrombosis Unit Department of Medical Laboratory SciencesUniversity of NigeriaEnugu CampusEnuguEN 400241Nigeria Department of medical Laboratory Science School of Public and Allied HealthBabcock UniversityIlishan-RemoOG 121109Nigeria Department of medical Laboratory Science State HospitalIjebu-OdeOG 120221Nigeria Department of Biomedical Science School of Applied ScienceUniversity of BrightonBrightonES BN24ATUnited Kingdom Department of microbiology Federal Teaching Hospital LokojaLokojaKO 260006Nigeria Department of Hematology and Blood Group Serology Federal College of Veterinary and Medical Laboratory TechnologyVomPL 930101Nigeria Department of Environmental and Occupational Health Texas A and M University School of Public HealthGarlandTX 75049United States Division of Chemical Pathology Department of Medical Laboratory SciencesUniversity of NigeriaEnugu CampusEnuguEN 400102Nigeria School of molecular Bioscience Sciences College of MedicalVeterinary and Life SciencesUniversity of GlasgowGlasgowSCO G128QQUnited Kingdom Department of medical Laboratory Science State Hospital Ijebu-OdeIjebu-OdeOG 360101Nigeria Department of medical Laboratory Science Faculty of Health Sciences and TechnologyUniversity of JosJosPL 930103Nigeria Department of medical Laboratory Science Bola Tinubu Health and Diagnostic CenterLagosLA 100102Nigeria Department of Pathology 68 Nigerian Army Reference HospitalYabaLA 1211001Nigeria Department of medical Laboratory Science Ladoke Akintola University of TechnologyOgbomosoOS 2111105Nigeria

BACKGROUND Vaccine hesitancy is a major challenge in the fight against the coronavirus disease 2019(COVID-19)*** the sociodemographic factors associated with vaccine acceptance among Nigerians is crucial for improving vaccine *** To assess the acceptance rate of COVID-19 vaccine and its related determinants among *** An online cross-sectional survey(observational study)was conducted between February 2021 and may 2021,using a questionnaire hosted on *** invitation to take part in the poll was sent out to participants through social networking platforms.A logistic regression was used to determine which sociodemographic factors were associated with vaccine acceptance *** A total of 1800 persons responded to the survey,a larger proportion of whom were males(53.9%)and within the age group of 21-30 years(29.4%)and earned an average income of less than$500 per month(43.3%).Only 0.56%of participants had a high perceived risk of COVID-19 infection,while only 1.11%had a perceived risk of dying from *** perception rate of the COVID-19 vaccine among participants was 51.1%,while the acceptance rate was 63.9%.There was no significant association between the COVID-19 vaccine acceptance rate and related determinants assessed,particularly age(χ²=3.049,P=0.550),sex(χ²=0.102,P=0.749),average income(χ²=3.802,P=0.875),and religion(χ²=2.819,P=0.420).Participants with chronic conditions demonstrated a higher acceptance rate compared to the general *** Despite the positive perception observed and substantial vaccine acceptance rate among the study participants,more public health interventions are still needed to enhance vaccine acceptability in Nigeria.

关键词： Acceptance COVID-19 Determinants Hesitancy Nigerians Online survey Vaccine

Origin and depositional environments of source rocks and crude oils from Niger Delta Basin: Carbon isotopic evidence

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China Geology 2020年第4期3卷 602-610页

作者： abiodun B Ogbesejana Oluwasesan m Bello Tijjani Ali Department of Applied Chemistry Federal University Dutsin-MaP.M.B.5001Dutsin-MaKatsina StateNigeria

Thirty-nine crude oils and twenty-one rock samples from Niger Delta Basin,Nigeria have been characterized based on their isotope compositions by elemental analysis-isotope ratio mass spectrometry and gas chromatography-isotope ratio mass *** bulk carbon isotopic values of the whole rock extracts,saturate and aromatic fractions range from–28.7‰to–26.8‰,–29.2‰to–27.2‰and–28.5‰to–26.7‰,respectively while the bulk carbon isotopic values of the whole oils,saturate and aromatic fractions range from–25.4‰to–27.8‰,–25.9‰to–28.4‰and–23.5‰to–26.9‰,*** average carbon isotopic compositions of individual alkanes(nC12-nC33)in the rock samples range from–34.9‰to–28.2‰whereas the average isotopic values of individual n-alkanes in the oils range from–31.1‰to–23.8‰.Theδ13C isotope ratios of pristane and phytane in the rock samples range from–29.2‰to–28.2‰and–30.2‰to–27.4‰respectively while the pristane and phytane isotopic values range from–32.1‰to–21.9‰and–30.5‰to–26.9‰,*** isotopic values recorded for the samples indicated that the crude oils were formed from the mixed input of terrigenous and marine organic matter and deposited under oxic to sub-oxic condition in lacustrine-fluvial/deltaic *** stable carbon isotopic compositions were found to be effective in assessing the origin and depositional environments of crude oils in the Niger Delta Basin.

关键词： Crude oils Source rocks Isotopic compositions Origin Niger Delta Basin Depositional environment Nigeria

Geochemical significance of tricyclic and tetracyclic terpanes in source rock extracts from the Offshore Niger Delta Basin,Nigeria

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Acta Geochimica 2021年第2期40卷 184-198页

作者： abiodun B.Ogbesejana Oluwasesan m.Bello Tijjani Ali Uduma A.Uduma Kamaluddeen S.Kabo Oluwadurotimi O.Akintade Department of Applied Chemistry Federal University Dutsin-MaP.M.B.5001Dutsin-MaKatsina StateNigeria Department of Chemical Sciences Koladaisi UniversityIbadanOyo StateNigeria

Tricyclic and tetracyclic terpanes are important constituents of crude oil and source rock ***,they have not been reported in the Offshore Niger Delta Basin,***,the present study investigated the geochemical significance of tricyclic and tetracyclic terpanes in source rock extracts from the Offshore Niger Delta Bain,Nigeria with gas chromatography-mass spectrometry(GC-mS).The total relative abundances of tricyclic terpanes,C_(19)TT-C_(21)TT,and C_(23) TT in the rock samples ranged from 82.50 to 96.37%,50.08 to 74.17%,and 25.83 to 49.92%,*** values showed the source rocks were formed from a mixed origin(terrestrial and marine).Among the tricyclic and tetracyclic terpanes identified in the rock extracts,the conventional(C_(20)TT,C_(23)TT,C_(24)TT,C_(24)TeT)and recent(Y1,X1,Z1)were more prominent than all others,indicating mixed input of terrigenous and marine organic *** C_(24)TT/C_(23)TT,C_(24)TeT/(C_(24)TeT+C_(26)TT),C_(19)TT/C_(23)TT,C_(20)TT/C_(23)TT,C_(25)TT/C_(24)TeT,C_(25)TT/C_(26)TT,C_(19)TT/C_(20)TT,C_(24)TeT/C_(26)TT,Z1/(Z1+C_(24)TT),and Y1/(Y1+C_(24)TT)in the rock samples range from 0.33 to 1.30,0.76 to 0.90,0.18 to 0.73,0.34 to 1.05,0.33 to 1.74,0.30 to 1.39,0.31 to0.89,1.66 to 4.33,0.36 to 0.83,and 0.34 to 0.79,*** values further showed that the rock samples were formed from mixed input of terrigenous and marine organic matter and deposited under oxic to suboxic conditions in lacustrine-fluvial/deltaic ***,the C_(24)TeT/C_(20)-26TT,C_(24)TeT/C_(30)HOP,and C_(23)TT/C_(30)HOP ranged from 0.16 to 0.45,0.02 to 0.42,and 0.01 to 0.48,*** range of values suggests that source rocks were within immature to early mature ***,this study showed that tricyclic and tetracyclic terpanes were effective in determining the origin,depositional environments,and thermal maturity of source rocks in the Niger Delta Basin,Nigeria.

关键词： Tricyclic terpanes Tetracyclic terpanes Source rocks Niger delta Gas chromatography-mass spectrometry(GC-mS)

Influence of mulch and poultry manure application on soil temperature,evapotranspiration and water use efficiency of dry season cultivated okra

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International Soil and Water Conservation Research 2023年第2期11卷 382-392页

作者： mutiu Abolanle Busarit Ganiyu Olawale Bankole Idris Adebanjo Adiamo Rasaq Olayiwola abiodun Olanrewaju Hammed Ologunde Department of Soil Science and Land management Federal University of AgricultureAbeokutaPM.B2240AbeokutaNigeria

Sustainable vegetable production especially during the dry season requires adequate conservation of soil *** study was conducted to evaluate the sole and interactive effects of mulching(m)and poultry manure(Pm)application on soil temperature(ST),crop evapotranspiration(ETc)and water use efficiency(WUE)of *** experiment was a Randomized Complete Block Design(RCBD)with three *** treatments were m at 0 and 6t ha^(-1)and Pm at 0,10 and 20t ha^(-1).Soil temperature was measured using digital thermometer while ETc was determined by water depletion method using a Time Domain *** at field capacity was applied manually at 2-day *** appli-cation of mulch significantly lowered ST while joint application of 20t ha^(-1)Pm(Pm20)and m signifi-cantly(p≤0.05)reduced ST at 5 cm and 10 cm soil depth compared with the unmulched plots in both *** of 10t ha^(-1)Pm(Pm10)without m recorded the highest ETc(43.7 mm),while joint application of Pm20 and m reduced ETc by about 93%compared with Pm10 *** used water most efficiently when Pm20 was applied under mulched *** was 62.2%increase in WUE under mulched plots compared with the control while the residual effect of Pm10 and m significantly increased WUE by 65.5%.It was evident that m alongside application of Pm is a good strategy for regulating ST,moderating ETc and increasing okra WUE,especially during dry season farming.

关键词： Evapotranspiration Soil temperature Volumetric water content Water depletion method Water use efficiency

Curcuma longa normalized cimetidine-induced pituitarytesticular dysfunction: Relevance in nutraceutical therapy

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Animal models and Experimental medicine 2019年第3期2卷 191-200页

作者： Ngozi Joy Onwuemene Christian Eseigbe Imafidon abiodun Oladele Ayoka Department of Physiological Sciences Faculty of Basic Medical SciencesObafemi Awolowo UniversityIle‐IfeOsun StateNigeria Department of Physiology Faculty of Basic Medical and Health SciencesBowen UniversityIwoOsun StateNigeria

Background:The increasing incidence of chemically induced infertility is both a social threat and a threat to the continuation of life *** or management therapy is often *** study investigated the effects of acetone extract of a local plant(Curcuma longa)in a Wistar rat model of cimetidine‐induced pituitarytesticular ***:Thirty‐five male Wistar rats were divided into 7 groups of 5 *** a phytochemical screening of an acetone extract of ***,cimetidine and the extract at three doses,200,400 and 600 mg/kg,were orally co‐administered to the rats for 28 consecutive *** were made(at PmL/kg distilled water),a standard treatment group(cimetidine+50 mg/kg vitamin C),a toxic group(60 mg/kg cimetidine)and a group receiving extract ***:Cimetidine administration was associated with deleterious alterations to sperm motility,sperm count and sperm viability,as well as derangements in the plasma levels of FSH,LH and testosterone(Pmetidine administration,and distortions were seen in the pituitary and testicular *** changes were significantly normalized by co‐administration of graded doses of the extract,with an associated improvement of both pituitary and testicular ***:Acetone extract of *** normalized cimetidine‐induced pituitarytesticular dysfunction in Wistar *** presents the extract as a potential nutraceutical choice against chemically induced reproductive toxicity.

关键词： Curcuma longa nutraceutics pituitary testis Wistar rats

Effect of Extrusion Cooking of White Yam (<i>Dioscorea rotundata</i>) and Bambara-Nut (<i>Vigna subterranean</i>) Blend on Some Selected Extrudate Parameters

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Food and Nutrition Sciences 2011年第6期2卷 599-605页

作者： Bolanle Oluwatoyin Oluwole abiodun Adekunle Olapade Department of Food Technology University of Ibadan Ibadan Oyo State Nigeria.

The effect of thermo-extrusion processing of white yam (Dioscorea rotundata) and bambara nut (Vigna subterranean) on some selected extrudate parameters of residence time, throughput and moisture content were investigated in this study. Both yam and bambara nut were processed into meals of 750 μm and 500 μm respectively. Extrusion was carried out following a three variable response surface methodology using a Box Behnken design. Blend of yam meal and Bambara nut meal at ratio 80:20 respectively was conditioned into 12.5, 15.0 and 17.5% moisture content (dry basis) and allowed to equilibrate for 4 h. Extrusion was carried out on a single screw extruder at 50, 60 and 70 rpm screw speed and 130oC, 140oC and 150oC barrel temperatures. The study revealed that the extrusion time varied between 13.1 and 29.7 sec, throughput varied from 13.3 to 34.4 kg/h and product moisture ranged from 11.1 to 16.8% dry basis). All investigated extrudate parameters were significantly affected (pmperature and feed moisture content, and their interactions. The results were indicative that the second order polynomial was adequate to model the dependence of the extrudate parameters of residence time, throughput and moisture content on extrusion variables of barrel temperature, feed moisture content and screw speed.

关键词： Extrusion Cooking Yam Bambara Nut Feed moisture