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Your search keyword '"Muhammad Abdullahi Umar"' showing total 4 results
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4 results on '"Muhammad Abdullahi Umar"'

1. Determinants of mortality among hospitalized patients with COVID-19 during first and second waves of the pandemic: A retrospective cohort study from an isolation center in Kano, Nigeria.

Author

Farouq Muhammad Dayyab, Hussain Abdullahi Bashir, Abdulwahab Kabir Sulaiman, Garba Iliyasu, Muhammad Hamza, Ahmad Maifada Yakasai, Ibrahim Nashabaru, Hadiza Saidu, Bashir Garba Ahmad, Bashir Dabo, Aminu Yusuf Abubakar, Ibrahim Musa Idris, Abdulrauf Sani Yahaya, Mustapha Ado, Ibrahim Sabo Abdurrahman, Hafizu Musa Usman, Mohammed Kabiru Bello, Jaafar Suleiman Jaafar, Anifowose Abdullahi, Abubakar Muhammad Alhassan, Abdulmalik Ahmad, Alika Ehima Allen, Medu Oghenekevwe Ezekiel, Muhammad Abdullahi Umar, Muhammad B Abdullahi, Sahabi Kabir Sulaiman, Tijjani Hussaini, Amina Abdullahi Umar, Aminu Ibrahim Tsanyawa, Sabitu Y Shuaibu, Nasir Alhassan Kabo, Basheer Lawan Muhammad, Mohammed Nura Yahaya, Imam Wada Bello, Ashiru Rajab, Abdulhakim Muhammad Daiyab, Aminu Faruk Kabara, Muhammad Sule Garko, and Abdulrazaq Garba Habib

Subjects
Medicine, Science
Abstract

BackgroundCoronavirus disease 2019 (COVID-19) has emerged as an important cause of morbidity and mortality worldwide. The aim of this study is to identify the clinical predictors of mortality among patients with COVID-19 pneumonia during first and second waves in a treatment center in northwestern Nigeria.MethodsThis was a retrospective cohort study of 195 patients hospitalized with COVID-19 between April 2020 to March 2021 at a designated COVID-19 isolation center in Kano State, Northwest Nigeria. Data were summarized using frequencies and percentages. Unadjusted odds ratios and 95% confidence intervals and p-values were obtained. To determine independent determinants of mortality, we performed a stepwise multivariate logistic regression model.ResultsOf 195 patients studied, 21(10.77%) patients died. Males comprised 158 (81.03%) of the study population. In the adjusted stepwise logistic regression analysis, age>64 years (OR = 9.476, 95% CI: 2.181-41.165), second wave of the pandemic (OR = 49.340, 95% CI:6.222-391.247), cardiac complications (OR = 24.984, 95% CI: 3.618-172.508), hypertension (OR = 5.831, 95% CI:1.413-24.065) and lowest systolic blood pressure while on admission greater than or equal to 90mmHg were independent predictors of mortality (OR = 0.111, 95%CI: 0.021-0.581).ConclusionStrategies targeted to prioritize needed care to patients with identified factors that predict mortality might improve patient outcome.

Published
2023
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2. LC-MS and GC-MS Profiling of Different Fractions of Ficus platyphylla Stem Bark Ethanolic Extract

Author

Madinat Hassan, Sunday Zeal Bala, Musa Bashir, Peter Maitalata Waziri, Ramlatu Musa Adam, Muhammad Abdullahi Umar, and Priscilla Kini

Subjects
Analytical chemistry, QD71-142
Abstract

The exploration of medicinal plants in traditional medicine for the treatment of diseases has been practiced for long, globally, because of its cultural acceptability, availability, and affordability. This study investigated the qualitative and quantitative estimation of phytochemicals present in Ficus platyphylla stem bark as well as determined the reducing power and antioxidant property of each fraction against DPPH and NO radicals. The study further elucidated the presence of possible compounds in different fractions (methanol, ethyl acetate, petroleum ether, and chloroform) of Ficus platyphylla stem bark (FPSB) extract using GC-MS, LC-MS, and FTIR techniques. Qualitative phytochemical analysis reveals the presence of phytochemicals: saponin, flavonoids, tannins, phenols, steroids, alkaloids, and glycoside in the ethanolic extract. The LC-MS study of methanol and ethyl acetate fractions reveals the presence of thirteen and three compounds, respectively. GC-MS analysis shows the presence of trans-13-octadecenoic acid as the main compound 38.07% and cis-vaccenic acid as the least compound (0.10%) in the petroleum ether fraction. The main compound in the chloroform fraction is 12-oleanen-3-yl acetate, (3. alpha.) with a peak area percentage of 49.25% and oleic acid been the least compound with 0.07% peak area. The FTIR analysis reveals that the fractions contain compounds with hydroxyl, aromatic, methyl, methylene, methyne, long aliphatic chain, ethers, ether-oxy, peroxides, etc. The analyzed fractions reveal compounds with potential pharmacological activity in the management of pathological conditions.

Published
2022
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3. Effects of Environmental Regulation on Corporates Tax Evasion

Author

Abba Ya'u, Mahadi Hasan Miraz, Muhammad Abdullahi Umar, Osaro Aigbogun, Natrah Saad, and Dhanuskodi Rengasamy

Abstract

The extent of corporate tax evasion and underreporting globally is increasing and taking new dimensions. Multinational corporations are taking advantage of the certain tax system to evade tax across countries. Governments lose huge amounts of revenue from large corporation tax evasion behavior, it was estimated that countries lose about 4-10 percent of global corporate income tax revenues to corporate tax evasion, which could have been used for health care delivery, education, and infrastructural development. The objective of this study is to determine the corporate tax evasion variables. The quantitative research approach was employed, a survey was used to collect the data from 312 oil and gas companies, SPSS and PLS-SEM were used to analyze the data. By expanding the economic deterrence theory with the economic theory of regulation, the results show that tax rate, detection probability, and penalty have a positive and significant relationship with corporate tax evasion. The result further revealed that environmental regulation has a positive and significant relationship with corporate tax evasion. The result of this study implied that tax rate, detection probability, penalty, and environmental regulation are the determinants of corporate tax evasion. This paper extends economic deterrence theory with economic theory of regulation, through environmental regulation as a predictor variable. The finding provides novel knowledge in taxation domain by integrating the two theories from different disciplines. Fundamentally, the effect of environmental regulation on corporate tax evasion is new in the literature, hence, it will serve as the foundation and basis for reference in future research. Therefore, policymakers globally, should design appropriate tax penalty systems, establish robust detection mechanisms, restructure the tax rate, and formulate friendly environmental regulations to reduce the level of corporate tax evasion among large and multinational companies across the globe. JEL E6; E7; E70; E71

Published
2023

4. LC-MS and GC-MS Profiling of Different Fractions of

Author

Madinat, Hassan, Sunday Zeal, Bala, Musa, Bashir, Peter Maitalata, Waziri, Ramlatu, Musa Adam, Muhammad Abdullahi, Umar, and Priscilla, Kini

Abstract

The exploration of medicinal plants in traditional medicine for the treatment of diseases has been practiced for long, globally, because of its cultural acceptability, availability, and affordability. This study investigated the qualitative and quantitative estimation of phytochemicals present in

Published
2021

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