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| 1 | Effects of polydispersity on the micro–macro behavior of granular assemblies under different deformation paths显示文摘The micromechanical and macromechanical behavior of idealized granular assemblies, made by linearly elastic, frictionless, polydisperse spheres, are studied in a periodic, triaxial box geometry, using the discrete element method. Emphasis is put on the effect of polydispersity under purely isotropic loading and unloading, deviatoric(volume conserving), and uniaxial compression paths.We show that scaled pressure, coordination number and fraction of rattlers behave in a very similar fashion as functions of volume fraction, irrespective of the deformation path applied. Interestingly, they show a systematic dependence on the deformation mode and polydispersity via the respective jamming volume fraction. This confirms that the concept of a single jamming point has to be rephrased to a range of variable jamming points, dependent on microstructure and history of the sample, making the jamming volume fraction a state-variable.This behavior is confirmed when a simplified constitutive model involving structural anisotropy is calibrated using the purely isotropic and deviatoric simulations. The basic model parameters are found to depend on the polydispersity of the sample through the different jamming volume fractions. The predictive power of the calibrated model is checked by comparison with an independent test, namely uniaxial compression. The important features of the uniaxial experiment are captured and a qualitative prediction for the evolution of stress and fabric is shown involving a 'softening' regime in both stress and fabric – stronger for the latter – that was not prescribed into the model a priori. | Nishant Kumar Olukayode I.Imole Vanessa Magnanimo Stefan Luding | 2014 | Particuology2014，12，1： | 5 |
| 2 | Improved understanding of the petroleum systems of the Niger Delta Basin, Nigeria显示文摘 | OluKayode J. Samuel Chris Cornford Martin Jones Olabisi A. Adekeye Samuel O. Akande | 2009 | Organic Geochemistry2009，，4： | 1 |
| 3 | Neoadjuvant capecitabine chemotherapy in women with newly diagnosed locally advanced breast cancer in a resource-poor setting(Nigeria):Efficacy and safety in a phase II feasibility study显示文摘 | Olukayode AA Uchenna ON Temidayo OO | 2012 | J Clin Oncol302012，，11： | 1 |
| 4 | A Study on Microstructural and Mechanical Properties of a Stir Cast Al(SiC-Mg-TiFe)Composite显示文摘Development of metal matrix composite is becoming widespread in most engineering applications where excellent mechanical properties are required.Mechanical and microstructural properties of aluminium reinforced with silicon carbide was investigated.Ingot of aluminium was melted in a furnace at temperature ranging between 650-700℃.Ferrotitanium and silicon carbide were preheated in a muffle furnace before addition to molten aluminium in a crucible furnace.Fixed proportions of magnesium,ferrotitanium and varying proportions of silicon carbide were utilized as reinforcements.Stirring was carried out manually for a minimum of 10 mins after the addition of each weight percent of silicon carbide.Resulting as-cast samples were sectioned for various mechanical and microstructural analysis.Microstructural studies from optical microscopy and scanning electron microscopy(SEM)showed the dispersion of reinforcements in the aluminium matrix.Mechanical properties which includes hardness and tensile strength of fabricated composites were observed to increase,while XRD analysis showed various phases formed from reaction between the matrix and reinforcements. | Samuel Olukayode Akinwamide Serge Mudinga Lemika Babatunde Abiodun Obadele Ojo Jeremiah Akinribide Bolanle Tolulope Abe Peter Apata Olubambi | 2019 | Fluid Dynamics & Materials Processing2019，15，1： | 1 |
| 5 | A comparative performance analysis of three meteorological drought indices显示文摘 | Olukayode Oladipo E | 1985 | Journal of Climatology1985，5，6： | 1 |
| 6 | Larval habitats of mosquito fauna in Osogbo metropolis,Southwestern Nigeria显示文摘Objective:To determine the larval habitats of mosquito fauna and possible impact of land use/land cover changes on the epidemiology of mosquito-bome diseases in Osogbo metropolis,Southwestern,Nigeria.Methods:All accessible larval habitats were surveyed between May and September,2011in Osogbo metropolis while Land Use/Land cover of the city was analyzed using 2 Lansat Multispectral Scanner satellite imagery of SPOT 1986 and T.ANDSAT TM 2009.Results:A total of six species namely,Aedes aegypti,Aedes albopictus,Aedes vittatus,Anopheles gambiae complex,Culex quinquefascialus and Erelmapodite chrysogaster were encountered during the study.The occurrence and contribution of disused tyres was significantly higher(P<0.05)than the other habitats encountered,while there were no significant differences in the contribution of gutters/run-offs.septic tanks/drums,ground pools/open drains and discarded containers lo the breeding of mosquitoes(P>0.05).The accessible land use/land covered of the study area between 1986 and 2009 showed that the wet land coverage and settlement area increased from 0.19 lo 9.09 hectare and 1.00 to 2.01 hectare respectively while the forest area decreased from 60.18 to 50.14 hectare.Conclusion:The contribution of the habitats coupled with the increasing rale of flooded environment which could provide ample breeding sites for mosquitoes call for sustained environmental sanitation and management in Osogbo metropolis. | Monsuru Adebayo Adeleke Wasiu Olalekan Adebimpe Abdulwasiu Oladele Hassan Sunday Olukayode Oladejo IsmailOlaoye Ganiyu Olatunji Olatunde Taiwo Adewole | 2013 | Asian Pacific Journal of Tropical Biomedicine2013，3，9： | 1 |
| 7 | Growth on dichlorobiphenyls with chlorine substitution on each ring by bacteria isolated from contaminated African soils显示文摘 | Sunday A. Adebusoye Flynn W. Picardal Matthew O. Ilori Olukayode O. Amund Clay Fuqua Nathan Grindle | 2007 | Applied Microbiology and Biotechnology2007，，2： | 1 |
| 8 | Microbial degradation of petroleum hydrocarbons in a polluted tropical stream显示文摘 | Sunday A. Adebusoye Matthew O. Ilori Olukayode O. Amund Olakunle D. Teniola S. O. Olatope | 2007 | World Journal of Microbiology and Biotechnology2007，，8： | 1 |
| 9 | An algorithm for integrated noise reduction and sharpness enhancement显示文摘 | OLUKAYODE AO KWAAITAAL-SPASSOVA GT | 2000 | IEEE Transactions on Consumer Electron2000，46，3： | 1 |
| 10 | The quasi-periodic fluctuations in the drought indices over the North American Great Plains显示文摘 | E. Olukayode Oladipo | | 0，1989，： | 1 |
| 11 | Exposure to a 2.5 GHz Non-ionizing Electromagnetic Field Alters Hematological Profiles, Biochemical Parameters, and Induces Oxidative Stress in Male Albino Rats显示文摘Modern technology has witnessed milestone achievements in the telecommunication industry.However,the widespread application of telecommunication technology is believed to heighten electromagnetic field(EMF)‘pollution’in our environment[1]and subject living organisms to various sources of electromagnetic emissions.These emissions include;microwaves. | Afolabi Olakunle Bamikole Obajuluwa Adejoke Olukayode Tiwa Obajuluwa Okiki Pius Oloyede Omotade Ibidun Fadaka Oluwaseun Adewale Ojo Oluwafemi Adeleke | 2019 | Biomedical and Environmental Sciences2019，32，11： | 0 |
| 12 | A study of scientific publications on the greater cane rat (Thryonomys swinderianus, Temminck 1827)显示文摘Background:The greater cane rat(GCR),reputed to be African's second largest rodent,is a precocial hystricomorph with an uncommon phenotype and life history.Scientific and socio-economic interests in the GCR have led to heightened research efforts targeted towards a better understanding of its biology and exploration of its economic and translational usefulness.Methods:Records of all online scientific publications on the GCR from Google,Google Scholar,PubMed,science.gov,Ebscohost and Worldwide science,with the exception of research theses,proceedings,unpublished projects and abstracts,were collated and analyzed using descriptive statistics.Results:A total of 146 published scholarly articles spanning about six decades were retrieved,with 98%of the GCR publications originating from African countries.Nigeria boasts the highest number of publications(58.22%)followed by Ghana(21.23%)and South Africa(5.48%)while Senegal contributed the least(0.69%).Publications were sorted into ten field categories.The field with the highest number of articles(41.78%)was animal breeding and management recording,closely followed by anatomy(37.67%).Lesser contributions were made by parasitology(5.48%),biochemistry/hematology(4.8%),pharmacology/toxicology(4.11%),pathology(2.06%),and surgery/anesthesia and physiology(1.37%apiece).The fields with fewest contributions were microbiology and developmental biology(0.69%each).Conclusion:This study chronicles the spectrum of knowledge available on the GCR,highlighting the knowledge gap that still exists in various fields in order to provide advocacy for new frontiers in research efforts on this rodent.We suggest the need for a clearly defined and well integrated national/regional policy aimed at establishing Africa's foremost micro-livestock rodent,the greater cane rat,on the world's scientific radar. | Oluwaseun Ahmed Mustapha Ebunoluwa Elizabeth Teriba Oluwaseun Samuel Ezekiel Ayokunle Matthew Olude Adebayo Koyuum Akinloye James Olukayode Olopade | 2020 | Animal Models and Experimental Medicine2020，3，1： | 0 |
| 13 | Gross Anatomy and Histology of the Alimentary System of the Larva of Palm Weevil, Rhynchophorus Phoenicis Fabricius (Coleoptera: Curculionidae)显示文摘 | Olumuyiwa Temitope Omotoso Chris Olukayode Adedire | 2010 | Journal of Life Sciences2010，4，1： | 0 |
| 14 | Constitutive basis of root system architecture:uncovering a promising trait for breeding nutrient-and drought-resilient crops显示文摘Root system architecture(RSA)plays a pivotal role in efficient uptake of essential nutrients,such as phosphorous(P),nitrogen(N),and water In soils with heterogeneous nutrient distribution,root plasticity can optimize acquisition and plant growth.Here,we present evidence that a constitutive RSA can confer benefits for sorghum grown under both sufficient and limiting growth conditions.Our studies,using P efficient SC103 and inefficient BTx635 sorghum cultivars,identified significant differences in root traits,with SC103 developing a larger root system with more and longer lateral roots,and enhanced shoot biomass,under both nutrient sufficient and deficient conditions.In addition to this constitutive attribute,under P deficiency,both cultivars exhibited an initial increase in lateral root development;however,SC103 still maintained the larger root biomass.Although N deficiency and drought stress inhibited both root and shoot growth,for both sorghum cultivars,SC103 again maintained the better performance.These findings reveal that SC103,a P efficient sorghum cultivar,also exhibited enhanced growth performance under N deficiency and drought.Our results provide evidence that this constitutive nature of RSA can provide an avenue for breeding nutrient-and drought-resilient crops. | Zhigang Liu Tongfei Qin Michaella Atienza Yang Zhao Hanh Nguyen Huajin Sheng Toluwase Olukayode Hao Song Karim Panjvani Jurandir Magalhaes William J.Lucas Leon V.Kochian | 2023 | aBIOTECH2023，4，4： | 0 |
| 15 | Toxicological and histopathological effects of Dennettia tripetala seed used as grain protectant,food,and medicine显示文摘The study revealed the safety of Dennettia tripetala seed on man and the environment.Adult male rats weighing 0.158-0.168 kg housed in standard cages with free access to food and water were used for the experiments.The median lethal dose(LD50)was estimated using revised up and down procedure.The LD50 for D.tripetala seed extract was 5785 mg/kg and this evoked paralysis in rats for 4 days coupled with discharge from the eyes and eventual death.The least weight gain by the animals administered 75%seed powder of D.tripetala(4338.75 mg/kg)was an index of high powder concentration,whereas the weight loss experienced by group V animals is strongly attributed to chemical assault by permethrin designated as a standard insecticide.The high values of alanine aminotransferase(ALT),aspartate aminotransferase(AST),and urea in the groups administered 75%permethrin powder(4338.75 mg/kg)and 75%D.tripetala seed powder is an index of liver and kidney injury and dysfunction.The presence of normal serum levels of ALT,AST,alkaline phosphatase,and creatinine;normal liver and kidney structures;and normal weight gains in the animal groups fed basal diet(control)and basal diet plus 25%D.tripetala is a strong indication that 25%D.tripetala seed powder(1446.25 mg/kg)supplementation is not toxic to the liver and kidney and therefore supports normal organ functions.The LD50 recorded strongly indicates that D.tripetala has a moderately high safety margin.Supplementation of less than 50%(2892.5 mg/kg)is recommended in the safe use of the plant material as grain protectant,food,and medicine.The botanical insecticide,D.tripetala,is safer than the conventional synthetic insecticide,permethrin,on account of the latter showing evidence of kidney damage. | Luke Chinaru Nwosu Chris Olukayode Adedire Emmanuel Oludele Ogunwolu Michael Olufemi Ashamo | 2017 | Food Quality and Safety2017，1，3： | 0 |
| 16 | An Assessment of Nigeria’s Foreign Policy and the African Union Security Architecture:Neo-conservative Perspectives显示文摘The beginning of the 21st century witnessed a strategic shift in Nigeria’s foreign policy.After the return of Nigeria to civilian rule in 1999,new multilateral diplomacy had to be embarked upon towards the promotion of democracy,peace,and security in Africa.One notable and distinctive feature of the country’s foreign policy from the inception of the Fourth Republic(1999)has been its promotion of African stability through the democratisation process.Nigeria has consistently used the African Union(AU)to pursue an agenda which can be described as neo-conservative,in restoring democracy,peace,and security,in Africa.Given this,this paper examines the neo-conservative foreign policy objectives and the role of the Nigerian state within the African Union security architecture towards the nurturing and advancement of democracy,peace,and security since the return to the civilian rule in 1999. | Olukayode Bakare | 2019 | International Relations and Diplomacy2019，7，5： | 0 |
| 17 | Intrahepatic cholestasis of pregnancy is associated with increased risk of hepatobiliary disease and adverse fetal outcomes: A systematic review and meta-analysis显示文摘Background and aims:The aim of this study was to review the literature and perform a meta-analysis to clarify the association between intrahepatic cholestasis of pregnancy and risks of long-term maternal hepatobiliary disease as well as adverse fetal outcomes including preterm birth,meconium-stained amniotic fluid,and stillbirth.Methods:This systematic review and meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.A comprehensive literature search was performed using Cochrane,Embase,and PubMed databases to identify observational or cohort studies comparing pregnant women with intrahepatic cholestasis of pregnancy(ICP)to pregnant women without ICP.Data from the included studies were analyzed using the Review Manager 5.4.1 software.Results:The meta-analysis showed a significant association between ICP and the risk of hepatobiliary diseases(pooled risk ratio[RR]:2.81,95%confidence interval[CI]:2.66–2.97,p<0.00001),hepatitis C(HC):a significant association between ICP and risk of HC(pooled RR:4.02,95%CI:3.12–5.19,p<0.00001),meconium-stained amniotic fluid(MSAF):ICP was significantly associated with an increased risk of MSAF(pooled RR:1.91,95%CI:1.65–2.21,p<0.00001),and preterm birth:the meta-analysis demonstrated a significant association between ICP and preterm birth(pooled RR:2.11,95%CI:2.01–2.21,p<0.00001).Conclusion:ICP demonstrated statistically significant associations with increased risks of hepatobiliary disease,HC,MSAF,and preterm birth. | Peter Olujimi Odutola Peter Oluwatobi Olorunyomi Olanrewaju Oalmide Olatawura Ifeoluwapo Olorunyomi Olukayode Madojutimi Ayomide O.Fatunsin Uju Okeke | 2023 | iLIVER2023，2，4： | 0 |
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