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12 results on '"Usman, Auwal A."'

2. Fabrication and Characterization of Electrospin PAni/Fe3O4/PVA Nanofiber Composites for Telecommunication Engineering

Author

Yusuf Maitama Sule University Kano Nigeria, Takai, Zakiyyu Ibrahim; Yusuf Maitama Sule University Kano, Mustafa, Mohd Kamarulzaki; Department of Physics Faculty of Science Yusuf Maitama Sule University, Kano, Nigeria, Umar, Farida Mustapha, Farouk, Abbas Umar, Idris, Aisha, Usman, Auwal Ibrahim, Umar, Najib Hamisu, Yusuf Maitama Sule University Kano Nigeria, Takai, Zakiyyu Ibrahim; Yusuf Maitama Sule University Kano, Mustafa, Mohd Kamarulzaki; Department of Physics Faculty of Science Yusuf Maitama Sule University, Kano, Nigeria, Umar, Farida Mustapha, Farouk, Abbas Umar, Idris, Aisha, Usman, Auwal Ibrahim, and Umar, Najib Hamisu

Abstract

The synthesis of conducting polymers has made it possible for the research community on their applications toward microwave absorption for telecommunication engineering. Polyaniline has been one such conducting polymer whose synthesis does not require any special equipment or precautions. Such conductive polymer generally, show highly reversible redox behaviour with a noticeable chemical memory and hence have been considered as prominent new materials for the fabrication nanofibers that could be used many applications particularly for telecommunication engineering. The current work presents a successful fabrication of Polyaniline/Magnetite/Poly(vinylalcohol) (PAni/Fe3O4/PVA) nanofibers composites using electrospinning methods. Field Emission Scanning Electron Microscope (FESEM) was employed to investigate the composites nanofiber’s morphology and TEM was also used to confirmed the present of Fe3O4 nanoparticles in the composites nanofiber, where the nanofibers diameter were investigated and found to be approximately 141 nm as estimated by image-J computer software analysis. Fourier-Transformation Infrared Spectroscopy (FTIR) study confirmed the presence of both Fe3O4 nanoparticles and PAni in the nanofiber structure. The X-ray diffraction (XRD) pattern of Fe3O4 nanoparticles and PAni/Fe3O4/PVA nanofiber materials shows the characteristic behaviour of both amorphose and crystalline phase by indication the peaks at 2? = 23.12o, 24.14o and 35.13o in the prepared materials.

Published
2024

3. Epidemiology of Lassa Fever and Factors Associated with Deaths, Bauchi State, Nigeria, 2015-2018

Author

Abdulkarim, Mohammed A., Babale, Sufiyan M., Umeokonkwo, Chukwuma D., Bamgboye, Eniola A., Bashorun, Adebobola T., Usman, Auwal A., and Balogun, Muhammad S.

Subjects
Lassa fever, Epidemiology, Death, Intelligence gathering, Diseases, Health
Abstract

In recent years, Lassa fever (LF) outbreaks in Nigeria have become more frequent and larger in magnitude; the outbreak in 2018 was described as the largest in history (1). Bauchi [...]

Published
2020
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4. Knowledge of health effects and determinants of psychoactive substance use among secondary school students in Sokoto Metropolis, Nigeria

Author

Usman, Auwal, primary, Abubakar, Aisha Ahmad, additional, Sufiyan, Mu’awiyya Babale, additional, Balogun, Muhammad Shakir, additional, Awosan, Kehinde Joseph, additional, Raji, Ismail Abdullateef, additional, Usman, Aishat Bukola, additional, Abdullahi, AbdulKarim Mohammad, additional, Njidda, Ahmad Muhammad, additional, Abdulmumin, Hashim Bala, additional, Kaoje, Aminu Umar, additional, Nguku, Patrik Mboya, additional, and Shehu, Adamu Usman, additional

Published
2021
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8. Laboratory Diagnostic Phases of Detection of SARS-CoV-2 by Real-Time Reverse Transcription-Polymerase Chain Reaction.

Author

Tahir, Mohammed Ibrahim, Ahmad, Abdurrahman El-Fulaty, Usman, Yahaya, Muhammad, Aliyu, Ige, Temidayo Oluwafemi, Jimoh, Olanrewaju, Aliyu, Shamsudin, Usman, Auwal, Imam, Mustapha Umar, Tanko, Zainab Lamido, Balogun, Emmanuel, and Suleiman, Ahmed Babangida

Subjects
SARS-CoV-2, COVID-19 testing, REVERSE transcriptase polymerase chain reaction, SEARCH engines
Abstract

The emergence of coronavirus disease 2019 (COVID-19) has caused global health concerns in the various strata of health-care authorities. The detection of the etiologic agent, SARS-CoV-2 became essential for case identification and prevention of transmission. In this review, literature was retrieved and sifted from different search engines. We highlighted some mainstream pointers vis-à-vis preanalytical, analytical, and postanalytical phases of laboratory detection of SARS-CoV-2 using real-time reverse transcription-polymerase chain reaction (RT-PCR) assay. The quantitative RT-PCR is considered as the gold standard for establishing the diagnosis of COVID-19. However, laboratories must pay attention to all the testing phases from sample collection to final release of results in order to avoid false-negative or false-positive results. It is also necessary to understand possible challenges and conduct risk assessment before the commencement of testing in the designated laboratory. [ABSTRACT FROM AUTHOR]

Published
2021
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11. Some Nigerian anti-tuberculosis ethnomedicines: A preliminary efficacy assessment

Author

Ibekwe, Nneka N., primary, Nvau, John B., additional, Oladosu, Peters O., additional, Usman, Auwal M., additional, Ibrahim, Kolo, additional, Boshoff, Helena I., additional, Dowd, Cynthia S., additional, Orisadipe, Abayomi T., additional, Aiyelaagbe, Olapeju, additional, Adesomoju, Akinbo A., additional, Barry, Clifton E., additional, and Okogun, Joseph I., additional

Published
2014
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12. Interrelationship between Fasciola Eggs Count, Haematological Parameters, Liver and Testicular Pathology of Yankasa Rams Experimentally Infected with Fasciola Gigantica in Zaria, Nigeria.

Author

Iliyasu, Dauda, primary, Sankey, Rwuaan, additional, Paulline, Chiezey, additional, Iyorhemba, Ate, additional, Mohammed, Ballah, additional, Mohammed, Bisallah, additional, Ibrahim, Salisu, additional, Usman, Auwal, additional, Ibrahim, Rekwot, additional, and Idiris, Ahamed, additional

Published
2014
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