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Phosphorus and nitrogen in the soil interface between two plant residues differing in C/nutrient ratio:A short-term laboratory incubation study

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soil Ecology Letters 2020年第3期2卷 188-194页

作者： kehinde o.Erinle Petra Marschner School of Agriculture Food and WineThe University of AdelaideSouth Australia5005Australia

In studies on the effects of mixing residues with different properties on decomposition rate and nutrient release,the extent of contact between the different residues is not *** this study,we used an experimental design where crop residues were spatially separated by a layer of *** were set up using young faba bean residue(low carbon(C)/nutrient ratio,L)and mature barley straw(high C/nutrient ratio,H).The microcosms comprised of two caps of PVC tubes,each filled with moist *** the two caps,there were three layers each separated from the others by fine nylon mesh with the middle layer being the moist interface *** had similar(H/H or L/L)or different(L/H)residue types,or only residue type(H/S or L/S)while the other cap had no *** treatments with only one residue,measured parameters,except microbial biomass P(MBP),were higher in L/S than H/*** treatments with two residues,all parameters were lowest in H/*** L/H compared to L/L after 14 days,available P and microbial biomass N(MBN)were lower,available N was similar and MBP was *** 28 days,available P and N were lower in L/H than L/L,but MBP and MBN did not *** L/H,measured resin P,MBP and MBN were higher than expected whereas available N was *** experimental design used in this study allows assessing the effect of residues on properties of the soil between them.

关键词： Crop residues C/P ratios Interface soil Phosphorus pools

Qualitative and quantitative phytochemical analysis of selected mosses with different alcoholic solvents

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Research in Cold and Arid Regions 2019年第5期11卷 382-388页

作者： kehinde o.olasoji Amos M.Makinde Bolajoko A.Akinpelu Musibau o.Isa Department of Botany Obafemi Awolowo UniversityIle-IfeOsun State 230103Nigeria Department of Biochemistry and Molecular Biology Obafemi Awolowo UniversityIle-IfeOsun State 230103Nigeria

This study was conducted to investigate the qualitative and quantitative phytochemical content of the crude extracts of Archidium ohioense,Pelekium gratum,and Hyophila involuta with different alcoholic solvents(ethanol,methanol,Seaman's Schnapps,fresh oil-palm wine,and fresh Raffia-palm wine).The mosses were collected from their natural populations on the central campus of the obafemi Awolowo University,Ile-Ife,*** yield of the extracts was weighed for all the solvents,and the qualitative and quantitative evaluations of the extracts were carried out using standard *** results of phytochemical analysis of the crude extracts from the mosses showed the presence of saponins,cardiac glycosides,triterpenes,alkaloids,flavonoids,and *** quantitative phytochemical analysis of the crude extracts showed that ethanolic extracts of Hyophila involuta had the highest flavonoid content(288.37±0.10 mg RE/g),and Raffiapalm-wine extracts of Hyophila involuta had the highest saponin content(224.70±0.02 mg/g),while the methanolic extract of Archidium ohioense had the highest cardiac glycosides content(63.71±0.14 mg/g),and the Raffia-palm wine extract of Hyophila involuta had the highest alkaloids content(102.50±0.12 mg/g).Raffia-and oil-palm wines were observed to be the most effective solvents for all the mosses studied,followed by Seaman's Schnapp,while methanol and ethanol were less *** study concluded that the extracts of the mosses studied contain pharmacologically active constituents that can be used for therapeutic purposes.

关键词： Archidium ohioense bryophyte Hyophila involuta Pelekium gratum phytoconstituents

Reversal of acetaminophen-generated oxidative stress and concomitant hepatotoxicity by a phytopharmaceutical product

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Food Science and Human Wellness 2017年第1期6卷 20-27页

作者： Afolabi C.Akinmoladun kehinde o.oguntunde Lawrence o.owolabi omotayo B.Ilesanmi Joan o.ogundele M.Tolulope olaleye Afolabi A.Akindahunsi Phytomedicine Biochemical and Molecular Pharmacology and Toxicology LaboratoriesDepartment of BiochemistrySchool of SciencesThe Federal University of TechnologyPMB 704AkureNigeria Department of Biological Sciences Faculty of ScienceFederal University OtuokeOtuokeNigeria Department of Industrial Chemistry Faculty of ScienceFederal University Oye-EkitiPMB 373Oye-EkitiNigeria

The increasing popularity of herbal medicine and the well-established health benefits of phytochemicals have spurred the multiplicity of nutraceutical and phytopharmaceutical *** this study,Trévo^TM,a nutraceutical and phytopharmaceutical product,was evaluated for beneficial effects in acetaminophen-induced hepatic toxicity in Wistar *** received Trévo^TM(1.5 mL/kg,3.0 mL/kg or 4.5 mL/kg)orally for 14 *** was induced by the oral administration of acetaminophen(2 g/kg),24 h prior to *** liver function tests,oxidative stress indicators and histoarchitectural changes were *** administration occasioned significant increase(Pof the aminotransferases,alkaline phosphatase,γ-glutamyltransferase and lactate dehydrogenase accompanied by a significant decrease(Popathological alterations in liver *** of hepatic oxidative stress by acetaminophen was revealed by significant(Poxidation,depletion of reduced glutathione,and decrease in superoxide dismutase and catalase *** of Trévo^TM remarkably ameliorated acetaminophen-induced histopathological alterations and changes in serum and tissue biochemical *** protective effect of Trévo^TM(4.5 mL/kg)was at par with that of Silymarin(25 mg/kg).The present study indicates that Trévo^TM has notable salubrious effects.

关键词： Acetaminophen Antioxidant activity Hepatoprotection Nutraceutical Herbal supplement

Transesterification of castor oil:neuro‑fuzzy modelling,uncertainty quantification and optimization study

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Systems Microbiology and Biomanufacturing 2023年第4期3卷 669-680页

作者： kehinde A.Babatunde Kazeem K.Salam olufunmilayo A.Aworanti olusesan A.olu-Arotiowa solomon o.Alagbe Titilayo D.oluwole Department of Chemical Engineering Ladoke Akintola University of Technology(LAUTECH)P.M.B.4000OgbomosoNigeria

This study conducted experiments used for the development of both the regression model with uncertainty analysis and the adaptive neuro-fuzzy inference system(ANFIS)model for the prediction of the yield of biodiesel(YB)produced from castor oil in the presence of calcium oxide derived from the *** Behnken design(BBD)was used to develop the experimental condition for five different variables while YB was the *** analysis was determined from Monte Carlo simulation(MCS).The model was optimized and validated before the generated data was applied in the three ANFIS modelling *** mean square error(RMSE),coefficient of correlation(R^(2))and average percentage error(APE)were used to determine the accuracy of the models *** result of this modelling shows that the optimum YB(94.29%)was achieved at a methanol to oil ratio of 11.48,catalyst loading of 3.38 wt%,reaction time of 1.84 h,the temperature of 60.2℃,and agitation of 343.5 *** prediction from BBD,ANFIS and MCS agreed that the methanol to oil ratio was the most important parameter for *** considered ANFIS model technique(subtractive clustering)for the modelling of YB outperformed BBD *** novelty of this study are the determination of the optimum condition for the transesterification of castor oil in the presence of thermally treated anthill,the establishment of the use of ANFIS in modelling YB,the prediction of the influence of variables on YB using both statistical and,AI techniques and validation of the predictions from the two methods using MCS.

关键词： Artificial intelligence Calcium oxide Eggshell Biodiesel Modelling Box Behnken design

optimal Allocation of Radio Resource in Cellular LTE Downlink Based on Truncated Dynamic Programming under Uncertainty

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International Journal of Communications, Network and System Sciences 2012年第2期5卷 111-120页

作者： Abayomi M. Ajofoyinbo kehinde o. orolu Department of Systems Engineering Faculty of Engineering Complex University of Lagos Lagos Nigeria

In the Cellular Long-Term Evolution (LTE) downlink, the smallest radio resource unit a Scheduler can assign to a user is a Resource Block (RB). Each RB consists of twelve (12) adjacent orthogonal Frequency Division Multiplexing (oFDM) sub-carriers with inter-subcarrier spacing of 15 kHz. over the years, researchers have investigated the problem of radio resource allocation in cellular LTE downlink and have made useful contributions. In an earlier paper for example, we proposed a deterministic dynamic programming based technique for optimal allocation of RBs in the downlink of multiuser Cellular LTE System. We found that this proposed methodology optimally allocates RBs to users at every transmission instant, but the computational time associated with the allocation policy was high. In the current work, we propose a truncated dynamic programming based technique for efficient and optimal allocation of radio resource. This paper also addresses uncertainty emanating from users’ mobility within a Cell coverage area. The objective is to significantly reduce the computational time and dynamically select applicable modulation scheme (i.e., QPSK, 16QAM, or 64QAM) in response to users’ mobility. We compare the proposed scheme with the Fair allocation and the earlier proposed dynamic programming based techniques. It is shown that the proposed methodology is more efficient in allocating radio resource and has better performance than both the Fair Allocation and the deterministic dynamic programming based techniques.

关键词： optimal Allocation Resource Block Truncated Dynamic Programming Uncertainty

Development of Power Consumption Models for ESP8266-Enabled Low-Cost IoT Monitoring Nodes

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Advances in Internet of Things 2019年第1期9卷 1-14页

作者： olubiyi o. Akintade Thomas K. Yesufu Lawrence o. kehinde Department of Electronic and Electrical Engineering Obafemi Awolowo University Ile-Ife Nigeria

The development of energy and cost efficient IoT nodes is very important for the successful deployment of IoT solutions across various application domains. This paper presents energy models, which will enable the estimation of battery life, for both time-based and event-based low-cost IoT monitoring nodes. These nodes are based on the low-cost ESP8266 (ESP) modules which integrate both transceiver and microcontroller on a single small-size chip and only cost about $2. The active/sleep energy saving approach was used in the design of the IoT monitoring nodes because the power consumption of ESP modules is relatively high and often impacts negatively on the cost of operating the nodes. A low energy application layer protocol, that is, Message Queue Telemetry Transport (MQTT) was also employed for energy efficient wireless data transport. The finite automata theory was used to model the various states and behavior of the ESP modules used in IoT monitoring applications. The applicability of the models presented was tested in real life application scenarios and results are presented. In a temperature and humidity monitoring node, for example, the model shows a significant reduction in average current consumption from 70.89 mA to 0.58 mA for sleep durations of 0 and 30 minutes, respectively. The battery life of batteries rated in mAh can therefore be easily calculated from the current consumption figures.

关键词： IoT ESP8266 Power Model Event-Based Monitoring Time-Based Monitoring

Isolation, characterization and modulatory potentials of β-stigmasterol, ergosterol and xylopic acid from Anchomanes difformis on mitochondrial permeability transition pore in vitro

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Chinese Herbal Medicines 2023年第4期15卷 533-541页

作者： kehinde oluseun sodeinde Akinwunmi oluwaseun Adeoye Adedeji Adesipo Adebayo AAdeniyi John Adeolu Falode Tajudeen olabisi obafemi Samuel olalekan olusanya Linette Twigge Jeanet Conradie Timothy o.Mosaku Department of Chemistry Federal University Oye-EkitiEkiti State 371104Nigeria Biomembrane Toxicology and Drug Discovery UnitDepartment of BiochemistryFederal University Oye-EkitiEkiti State 371104Nigeria Department of Biochemistry Afe Babalola UniversityAdo-EkitiEkiti State 360001Nigeria Department of Chemistry University of Free StateBloemfontein 9301South Africa Department of Civil Engineering Covenant UniversityOgun State 112104Nigeria

objective: Secondary metabolites and polyphenolic compounds from medicinal plants have been demonstrated to have multiple biological functions with promising research and development prospects. This study examined the effect of β-stigmasterol(with ergosterol) and xylopic acid isolated from Anchomanes difformis on liver mitochondrial permeability transition pore(mPTP).Methods: The compounds were isolated by vacuum liquid chromatography. Mitochondrial swelling was assessed as changes in absorbance under succinate-energized ***:1H and13C NMR spectroscopic elucidation of the isolates affirmed the presence of β-stigmasterol with ergosterol(1:0.3) and xylopic acid. The isolates reversed the increase in lipid peroxidation and inhibited the opening of mitochondrial permeability transition pores caused by calcium and *** inhibition of m PTP offers a promising therapeutic target for the treatment of mitochondrial-associated ***: Reduction in the activity of calcium ATPase and the expression of Caspase-3 and-9 were observed, suggesting that they could play a role in protecting physicochemical properties of membrane bilayers from free radical-induced severe cellular damage and be useful in the management of diseases where much apoptosis occurs.

关键词： Anchomanes difformis(Blume)Engl ergosterol mitochondrial membrane modulation β-stigmasterol transition pore xylopic acid

Prevalence of latent eosinophilia among occupational gardeners at Babcock University,Nigeria

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Asian Pacific Journal of Tropical Biomedicine 2016年第6期6卷 511-515页

作者： Ayodele olushola Ilesanmi Ginnikachi Jennifer Ekwe Rosemary Isioma Ilesanmi Damilola Temitope ogundele Jacob kehinde Akintunde oluwasogo Adewole olalubi Department of Medical Laboratory Science Babcock University Department of Medical Microbiology Olabisi Onabanjo University Department of Chemical Geological & Physical SciencesChemistry UnitKwara State University Drug Metabolism and Molecular Environmental Toxicology Unit Biochemistry OptionDepartment of Bioscience and BiotechnologyCollege of Pure and Applied SciencesKwara State University School of Allied Health & Environmental Sciences Department of Allied HealthPublic Health UnitKwara State University

objective: To determine the level of eosinophils present in the blood and sputum samples, presumably as a result of continual occupational exposure to allergens while on duty, as gardeners at Babcock University, ***: Haemocytometer and olympus microscope were utilized to estimate eosinophils population in 44 blood samples and 21 sputum samples ***: Relationship between the occurrence of eosinophil in blood and the exposure period among Babcock University gardeners had a positive correlation(r = + 0.08,t = 4.55, P was found that blood eosinophil count in these workers correlated with the length of exposure ***: The nature and the gardening activities are not a risk factor that significantly affect eosinophil level but duration of exposure to allergens. However, all safety precautionary kits and wears should be enforced and embraced by the concerned occupational gardeners so as to avert and subvert its pre-disposing deleterious effect on them.

关键词： Eosinophilia occupational Exposure Gardeners Duration Allergens

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阿特拉津污染胁迫对典型细菌DNA损伤研究

东北农业大学学报 2015年第5期46卷 60-67页

作者：张颖鲁莹莹姜昭单德鑫曹博 kehinde o.Erinle 东北农业大学资源与环境学院哈尔滨150030

采用随机扩增多态性DNA标记(RAPD)方法,研究阿特拉津浓度为0、25、50、75、100和125 mg·L-1污染胁迫条件下对阿特拉津高效降解菌Arthrobacter ***10和Acinetobacter ***32与非阿特拉津降解菌Escherichia coli K12和Micrococcus luteus N19生长影响及基因组DNA损伤情况。结果表明,在阿特拉津污染胁迫24 h后,随阿特拉津浓度增高,Escherichia coli K12和Micrococcus luteus N19生长速度受抑制强度逐渐明显。利用随机引物对上述四种细菌基因组DNA进行PCR扩增。结果表明,菌株Escherichia coli K12和Micrococcus luteus N19处理组与对照组之间RAPD指纹图谱存在明显差异,在阿特拉津浓度为100 mg·L-1时,基因组模板稳定性(GTS)分别降至52.3%和61.2%。同一浓度下,阿特拉津降解菌Acinetobacter ***32基因组模板稳定性为82.9%,Arthrobacter ***10基因组模板稳定性为92.1%。研究表明,阿特拉津胁迫对Escherichia coli K12和Micrococcus luteus N19基因组DNA产生损伤;阿特拉津降解菌Arthrobacter ***10和Acinetobacter ***32对阿特拉津胁迫有较高耐受性,适于阿特拉津降解。

关键词：随机扩增多态性DNA 阿特拉津细菌基因毒理效应 DNA损伤