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A bivariate statistical analysis for coal exploration within parts of the Anambra Basin in Nigeria
Adamu L. Musa,Andongma W. Tende,Jiriko N. Gajere,Mazadu D. Bako,Fatima Shinkafi,Mohammed D. Aminu 대한공간정보학회 2022 Spatial Information Research Vol.30 No.3
The Anambra Basin is rich in coal, and can be investigated regionally using predictive models developed with Geographic Information System (GIS). Several spatial and statistical approaches were employed in this study to determine the most prospective location for coal deposits, with a focus on accuracy and reliability. The relationship between coal occurrence and evidential data was assessed using the prediction area plot analysis, and coal predictive maps were developed using bivariate statistical models such as the Evidential Belief function (EBF), Statistical Index (SI), and Frequency Ratio (FR) models. The accuracy of all predictive models was assessed using the Receiver Operating/Area Under Curve (ROC/AUC) analysis. The application of prediction area plot analysis suggests a substantial correlation can be established between coal resources and spatial data on geology (0.75) and lineament density (0.74). Based on spatial data integration using bivariate models, the north-central and south-central parts of the study area have a high potential for coal occurrence. Comparatively, the very high potential class accounts for 5.3%, 3.64%, 7.14%, and 2.04%, respectively, in the EBF, Uncertainty, SI and FR models. Statistical validation using the ROC/AUC analysis demonstrated prediction accuracies of 83%, 79%, 78%, and 82%, respectively, for the belief, uncertainty, SI, and FR models. In general, GIS predictive modelling for coal resource exploration is strongly recommended in the Anambra Basin and other sedimentary basins with similar geological settings.
Adamu Usman Abubakar,Abu Bakar Noor Hana Hanif,Zango Zakariyya Uba,Sambudi Nonni Soraya,Iqbal Anwar,Hussin Mohd Hazwan,Hamidon Tuan Sherwyn 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.9
Low-temperature hydrothermal technique was employed for the synthesis of highly porous and crystalline MIL-101(Cr) metal-organic frameworks series. The resulting as-synthesized MOFs were characterized by Fourier transform infrared (FTIR) spectroscopy, powdered X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption analysis, thermogravimetric analysis (TGA), photoluminescence (PL) spectroscopy, and ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy. The photocatalytic activity of the MOFs was evaluated for degradation of phenanthrene (PHE) under visible light irradiation. Among the MOFs, MIL-101@160 has the highest Brunner Emmett-Teller (BET) specific surface area and corresponding pore volume of 2,592.2 m2g−1 and 1.09 cm3g−1, respectively. Furthermore, it has shown higher photocatalytic degradation of the PHE than other samples with 98% degradation efficiency achieved within 150 minutes.
Adamu Muhammad,Luteino Lorna Hamman,Samaila Musa Chiroma,Martha Orendu Oche Attah,Nathan Isaac Dibal KOREAN PHARMACOPUNCTURE INSTITUTE 2023 Journal of pharmacopuncture Vol.26 No.4
Objectives: Epilepsy is a neurological condition characterized by repeated seizures attributable to synchronous neuronal activity in the brain. The study evaluated the effect of acetone extract of Adansonia digitata stem bark (ASBE) on seizure score, cognition, depression, and neurodegeneration as well as the level of Gamma-Aminobutyrate acid (GABA) and glutamate in Pentylenetetrazol-kindled rats. Methods: Thirty-five rats were assigned into five groups (n = 7). Groups 1-2 received normal saline and 35 mg/kg PTZ every other day. Groups 3-4 received 125 mg/kg and 250 mg/kg ASBE orally while group 5 received 5 mg/kg diazepam daily for twenty-six days. Group 3-5 received PTZ every other day, 30 mins after ASBE and diazepam. Results: The results showed that Pentylenetetrazol (PTZ) induces seizure, reduces mobility time in force swim test and decreases the normal cell number in the brain. It also significantly decreases (p < 0.05) catalase, superoxide dismutase and reduced glutathione activities compared to the ASBE pre-treated rats. Pre-treatment with ASBE reportedly decreases seizure activities significantly (p < 0.05) and increases mobility time in the force swim test. ASBE also significantly elevate (p < 0.05) the normal cell number in the hippocampus, temporal lobe, and dentate gyrus. Conclusion: ASBE reduced seizure activity and prevented depression in PTZ-treated rats. It also prevented neurodegeneration by regulating glutamate and GABA levels in the brain as well as preventing lipid peroxidation.
Potential of Using Ginger Essential Oils-Based Nanotechnology to Control Tropical Plant Diseases
Adamu Abdullahi,Khairulmazmi Ahmad,Intan Safinar Ismail,Norhayu Asib,Osumanu Haruna Ahmed,Abubakar Ismaila Abubakar,Yasmeen Siddiqui,Mohd Razi Ismail 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.6
Essential oils (EOs) have gained a renewed interest in many disciplines such as plant disease control and medicine. This review discusses the components of ginger EOs, their mode of action, and their potential nanotechnology applications in controlling tropical plant diseases. Gas chromatography-mass spectroscopy (GC-MS), high-performance liquid chromatography, and headspace procedures are commonly used to detect and profile their chemical compositions EOs in ginger. The ginger EOs are composed of monoterpenes (transcaryophyllene, camphene, geranial, eucalyptol, and neral) and sesquiterpene hydrocarbons (α-zingiberene, ar-curcumene, β-bisabolene, and β-sesquiphellandrene). GC-MS analysis of the EOs revealed many compounds but few compounds were revealed using the headspace approach. The EOs have a wide range of activities against many phytopathogens. EOs mode of action affects both the pathogen cell’s external envelope and internal structures. The problems associated with solubility and stability of EOs had prompted the use nanotechnology such as nanoemulsions. The use of nanoemulsion to increase efficiency and supply of EOs to control plant diseases control was discussed in this present paper. The findings of this review paper may accelerate the effective use of ginger EOs in controlling tropical plant diseases.
Hauwa Adamu Audu,Amina Ahmed,Joseph Vandi Zirahei,Nathan Isaac Dibal,Samaila Musa Chiroma 경희대학교 융합한의과학연구소 2023 Oriental Pharmacy and Experimental Medicine Vol.23 No.4
The study investigates the role of Anogeissus leiocarpus methanol stem bark extract (ALSE) on seizure, oxidative stress and cognitive performance in pentylenetetrazole (PTZ)-induced epilepsy in rat model. Thirty Wistar rats were allocated into five groups (n = 6). Groups 1 and 2 received normal saline intra-peritoneal (i.p) every day and PTZ (i.p) at 35 mg/kg every other day respectively. Groups 3–5 were given ALSE orally at (250 mg/kg and 500 mg/kg) and Diazepam at 4 mg/kg (i.p) respectively. Groups 3–5 were given PTZ (i.p) at 35 mg/kg every other day for 30 days, 30 min after ALSE and Diazepam administration. The rats were observed for seizure activities and also evaluated for cognitive functions. The rats were euthanized thereafter and the brain histology and oxidative stress biomarkers were evaluated. PTZ induction resulted into increased seizure activities leading to the development of kindling, oxidative stress, cognitive impairment and histological aberration of the hippocampus. However, pretreatment with ALSE decreased seizure activities, reversed oxidative stress and cognitive impairment and preserved hippocampal histology relative to the PTZ alone treated rats. Conclusively, ALSE was found to increase seizure latency, prevented cognitive decline, and decreased seizure activities induced by PTZ-kindling in rats. Additionally, ALSE ameliorates PTZ-induced oxidative stress and histological aberrations of the hippocampus. Hence, this study proposed that ALSE might be a promising tool for ameliorating seizure in epilepsy.
Abille Adamu Braimah,Meçik Oytun 경희대학교 글로벌 통상·금융연구원 2023 International Trade, Politics and Development Vol.7 No.2
Motivated by recent rapid exchange rate depreciations, shrank economic growth, high inflation, and persistent trade deficits, this study examines the trade balance (TB) in the face of the recent dynamics of the stated macroeconomic factors, which are also important determinants of the TB. The symmetric test of the J-curve phenomenon for the selected Sub-Saharan African (SSA) countries is revisited in this regard. The study uses panel data from 1970 to 2020 for ten of these countries for the longitudinal panel analysis with the TB as the dependent variable and the real exchange rate, foreign and domestic national incomes, and trade openness as the set of independent variables.Because the underlying data set involves a heterogeneous panel of relatively short N and long T, the pooled mean group (PMG) and mean group (MG) heterogeneous panel models are employed based on the Hausman test for parameter consistency in heterogeneous panels.The findings largely support the domestic income growth– TB worsening and the foreign income growth– TB improvement hypotheses. Trade openness is found to mostly augment the TB performance of the countries. The results also validated the J-curve effect for only 3/10 and 2/10 countries in the PMG and MG models, respectively. The divergence for most of the countries is attributed to possible import compression and institutional structure of SSA countries.Given the favorable effects of trade openness on the TB performance of SSA countries, it is recommended that SSA countries place much emphasis on import-substitution industrialization and value addition to their natural resources as well as investment-driven growth policies to improve the competitiveness of their exports and reverse the chronic deficits in their TBs.This paper is unique for invoking heterogeneous panel models to analyze the TB in light of recent dynamics of its determinants, as well as providing an update on the symmetric test of the J-curve phenomenon for the selected SSA countries.
Sagir Adamu,Shaikh A. Razzak,Mohammad M. Hossain 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.64 No.-
A new template-free technique is applied to develop fluidizable Ce-Al2O3 support and impregnated with nickel. The Ni(x)/Ce-Al2O3 catalysts are evaluated in a fluidized CREC Riser Simulator using glucose as biomass surrogate. XRD shows that nickel is well-dispersed on Ce-Al2O3. The acidity of the catalysts decreased from 0.317 to 0.202 mmol NH3/g-sample as the nickel loading was increased. In catalyst evaluation, it is found that the reduced catalysts favor bond cleavage, promotes water gas shift and steam reforming reactions to give hydrogen/syngas as more selective products. Ni(20)/Ce-Al2O3 exhibited lowest extent of coking and produced hydrogen rich syngas with H2/CO ≈ 1.75:1.
Tilahun Adamu Mengistie 숙명여자대학교 아시아여성연구원 2020 Asian Women Vol.36 No.4
The study investigated the challenges involved in women’s empowerment through adult education in Ethiopia, focusing specifically on the Integrated Functional Adult Education Program, employing social constructivist paradigm and qualitative case study design. Women who had graduated from the program, facilitators, and adult education experts participated in the study. Purposive sampling technique was used to select the first two women and one Integrate Functional Adult Education (IFAE) expert from the city administration. Chain sampling was used to select the remaining eleven women for interview and seven women for the focus group discussion. Two facilitators and one IFAE expert from the Sub City were selected through a comprehensive sampling technique. Data were gathered through interview, focus group discussions, and document review. The inductive approach to iterative steps was used to analyze and interpret the data. Analysis of the data shows that women learners’ economic problems, lack of political attention, weak collaboration between bodies concerned, husbands’ influence, and societal attitudes are challenges to their empowerment process.
Abubakar Adamu,Jitsupa Deepho,Abdulkarim Hassan Ibrahim,Auwal Bala Abubakar 경남대학교 기초과학연구소 2021 Nonlinear Functional Analysis and Applications Vol.26 No.2
In this paper, an inertial Halpern-type forward backward iterative algorithm for approximating solution of a monotone inclusion problem whose solution is also a fixed point of some nonlinear mapping is introduced and studied. Strong convergence theorem is established in a real Hilbert space. Furthermore, our theorem is applied to variational inequality problems, convex minimization problems and image restoration problems. Finally, numerical illustrations are presented to support the main theorem and its applications.