Publication of Library-Related Articles in Selected Nigerian Newspapers from 2011 to 2016: How Much of the Media Reportage?

Purpose: This study was carried out to investigate the publication of library-related articles in selected Nigerian Newspapers from 2011 to 2016. Design/Methodology/Approach: The study adopted content analysis as its research design. The frequency and prominence of library-related articles published from 2011 to 2016 in Nigerian newspapers were examined. Four newspapers were purposively selected from the best ten newspapers in circulation in Nigeria. A total of 8,644 editions of the newspapers constitute the population from where all the available publications in MOUAU library - 7,908 editions representing 91.5% of the population - formed the sample size. The instrument used for data collection was the code sheet while the data collected was analyzed within the context of the objectives of the study using simple frequency distribution table, percentages and numbers, for easy interpretation. Findings: The results of the study reveals that library-related articles were seldom published in Nigerian newspapers. Out of the 7,908 editions of the newspapers examined, only 960 library-related articles were published. This represents one library-related article in at least every 8 editions. Other findings are that: the number of library-related articles published in the newspapers progressively decreased between 2013 and 2016; This Day newspaper published the highest number of library-related articles; and news articles constitute majority of the library-related articles published in the newspapers. Recommendations: The study recommends, among others, that the Nigerian Library Association, the Association of University Librarians in Nigeria Universities, and other associations of heads of various libraries should, at their different fora, organize regular interactive sessions with the Nigerian Union of Journalists in general and the newspaper correspondents /journalists in particular to discuss, among others, the need for adequate coverage and proper placement of library issues in the newspapers. Keywords: Library; Newspaper; Nigerian Newspapers; Library-Related Articles

High dimensional tori and chaotic and intermittent transients in magnetohydrodynamic Couette flows

The magnetised spherical Couette (MSC) problem, a three dimensional magnetohydrodynamic paradigmatic model in geo- and astrophysics, is considered to investigate bifurcations to high-dimensional invariant tori and chaotic flows in large scale dissipative dynamical systems with symmetry. The main goal of the present study is to elucidate the origin of chaotic transients and intermittent behaviour from two different sequences of Hopf bifurcations involving invariant tori with four fundamental frequencies, which may be resonant. Numerical evidence of the existence of a crisis event destroying chaotic attractors and giving rise to the chaotic transients is provided. It is also shown that unstable invariant tori take part in the time evolution of these chaotic transients. For one sequence of bifurcations, the study demonstrates that chaotic transients display on–off intermittent behaviour. A possible explanatory mechanism is discussed.Peer ReviewedPostprint (published version

Rotating waves arising from the instability of magnetized spherical Couette flows

Rotating waves of various azimuthal wavenumbers appear in magnetized spherical Couette flows in time- dependent states. The criteria for the flow to enter a time-dependent state are determined by the values of Reynolds and Hartmann numbers for a given geometric configuration of the spherical Couette system. These time-dependent states of the flow have been referred to as the radial jet, the return flow and the shear layer instabilities. In the present work, rotating waves in the flow during radial jet and return flow instabilities are observed. The rotating waves both have an azimuthal wavenumber of 3, but vary in their spatial and temporal properties.Postprint (published version

Rotating waves arising from the instability of magnetized spherical Couette flows

Rotating waves of various azimuthal wavenumbers appear in magnetised spherical Couette flows in time-dependent states. The criteria for the flow to enter a time-dependent state are determined by the values of Reynolds and Hartmann numbers for a given geometric configuration of the spherical Couette system. These time-dependent states of the flow have been referred to as the radial jet, the return flow and the shear layer instabilities. In the present work, rotating waves in the flow during radial jet and return flow instabilities are observed. The rotating waves both have an azimuthal wavenumber of 3, but vary in their spatial and temporal properties.Postprint (published version

Experimental investigation of the return flow instability in magnetic spherical Couette flow

We conduct magnetic spherical Couette (MSC) flow experiments in the return flow instability regime with GaInSn as the working fluid, and the ratio of the inner to the outer sphere radii $r_{\rm i}/r_{\rm o} = 0.5$, the Reynolds number ${\rm Re} = 1000$, and the Hartmann number ${\rm Ha} \in [27.5,40]$. Rotating waves with different azimuthal wavenumbers $m \in \{2, 3, 4\}$ manifest in certain ranges of ${\rm Ha}$ in the experiments, depending on whether the values of ${\rm Ha}$ were fixed or varied from different initial values. These observations demonstrate the multistability of rotating waves, which we attribute to the dynamical system representing the state of the MSC flow tending to move along the same solution branch of the bifurcation diagram when ${\rm Ha}$ is varied. In experiments with both fixed and varying ${\rm Ha}$, the rotation frequencies of the rotating waves are consistent with the results of nonlinear stability analysis. A brief numerical investigation shows that differences in the azimuthal wavenumbers of the rotating waves that develop in the flow also depend on the azimuthal modes that are initially excited

Dynamic transitions of the magnetized spherical Couette flow between its base state and the return flow instability

The transition between the stable base state of the magnetized spherical Couette (MSC) flow and the return flow instability is experimentally investigated. The experiments are conducted using an MSC setup consisting of insulating spheres with the ratio of the inner to the outer radii ri/ro = 0.5, Reynolds number Re = 1000 and Hartmann number Ha ¿ [25, 29]. The transition is characterized by changes in the power spectra of the azimuthal modes in the flow as Ha is dynamically changed. The transition occurs in the interval Ha ¿ [26.5, 27.5]. The evolution of the power spectra of the azimuthal modes exhibits hysteretic effect depending on whether Ha is increased or decreased within the experimental interval. The power spectra in the azimuthal modes m ¿ {3, 4} increases and remains dominant as Ha is increased, while the power spectra in m ¿ {2, 4} are dominant while the flow is time dependent due to return flow instability as Ha is decreased.Peer ReviewedPostprint (published version

Quality of work life and job satisfaction among early-career pharmacists in Africa’s most populous country: A nationwide survey in Nigeria

This study examined the factors affecting the quality of work life and job satisfaction among early-career pharmacists in Nigeria. This was a cross-sectional survey conducted across the six geopolitical zones in Nigeria. We used the database of licensed pharmacists in each selected state to identify eligible participants. Information sheets were sent to all potential participants through email. If interested, they signed the consent form and were sent the survey online to be completed and returned within 24 h. Validated questionnaires were used to evaluate their quality of work life and job satisfaction. Descriptive statistics (frequency, mean, and standard deviation) were used to summarize the data. Of a total of 373 participants; 323 (86.6%) were single, and 245 (65.7%) were working in government-owned hospitals. The findings showed that the quality of work life information affects the job satisfaction of early-career pharmacists. Reasons reported for poor job satisfaction were poor remuneration, increased workload, a lack of employer support, and an unconducive work environment. Suggestions for possible interventions included an increase in remuneration, an accommodating work atmosphere, and flexible working hours. Our findings show a direct relationship between quality of work life and job satisfaction; predictors of job satisfaction were salary, employer assistance, health insurance, and length of leave

Convection Caused Symmetry Breaking of Azimuthal Magnetorotational Instability in a Liquid Metal Taylor Couette Flow

This are the experimental and numerical results for the publication "Convection Caused Symmetry Breaking of Azimuthal Magnetorotational Instability in a Liquid Metal Taylor Couette Flow ". It contains pictures, experimental results, tex files, COMSOL simulation file and PDF

Data for: Experimental investigation of the return flow instability in magnetic spherical Couette flow

Experimental data, numerical data, and programming script

Exploring Different Drug Targets Responsible for the Inhibitory Activity of <i>N, N′</i>-Substituted Diamine Derivatives in <i>Leishmania</i>

The genome sequence of Leishmania has given rise to diverse novel drug targets, and their identification remains the first step in drug discovery. This study aims to identify the possible anti-leishmanicidal activity target(s) of N1, N4-[dibenzylbutane-4′,4″-(dioxymethylenebenzene)]-1,4-diamine from a plethora of pathways in kinetoplastids. The compound was docked using AutoDockTools-1.5.6 against eight co-crystallized proteins selected from the protein data bank, each representing important biosynthetic pathways. The evaluation of the best conformational protein–ligand poses showed that the N, N′-substituted diamine binds more efficiently to glyceraldehyde-3-phosphate dehydrogenase (G3PDH) (E = −8.97 Kcal/mol and Ki = 0.267 µM; Ki co-crystallized ligand = 19.39 µM), which is responsible for the conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate and pteridine reductase I (PTR1) (E = −8.75 Kcal/mol and Ki = 0.387 µM; Ki co-crystallized ligand = 60.56 µM), which reduces both pterins and folates to tetrahydrobiopterin and tetrahydrofolate, respectively. Moderate binding activity by the ligand was observed for the protein kinases (CDKs) (E = −8.37 Kcal/mol and Ki = 0.729 µM; Ki co-crystallized ligand = 26.80 µM) and trypanothione reductase (TR) (E = −8.57 Kcal/mol and Ki = 0.525 µM; Ki co-crystallized ligand = 174.68 µM) of the trypanothione biosynthetic pathway. With E > −7.35 Kcal/mol and Ki > 4.10 µM, the ligand appears to have no significant inhibition of the squalene synthase (SQS), lactoyl glutathione lyase (LGL) or the pteridine synthase (TS) of the sterol, glyoxalase and trypanothione biosynthetic pathways. The efficient inhibition of G3PDH and PTR1 targets in Leishmania by N, N′-substituted diamine molecule provides more insights into understanding the mechanism of leishmanicidal activity