1,355,442 research outputs found
Improved Computational Performance of a Modified Conjugate Gradient Coefficient for Solving Nonlinear System of Equations
No full textOpening a window on a literary giant: on writing Wole Soyinka: literature, activism, and African transformation
No full textAs Nobel laureate Wole Soyinka publishes his first novel in 48 years, Bola Dauda and Toyin Falola offer a window on the literary giant, reflecting on their new book, Wole Soyinka: Literature, Activism, and African Transformation
Diverse binding activates to DAUDA of Ha-FAR-1,Ha-FAR-2 and Hf-FAR-1.
No full textA: Fluorescence emission spectra (excitation at 345 nm) of 3μM DAUDA in buffer alone or with buffer plus, 3μM Ha-FAR-1 complex, 3μM Ha-FAR-2 complex or 3μM Hf-FAR-1 complex. B, C, D: Titration curves for determining the dissociation constant (Kd) for interaction of DAUDA with Ha-FAR-2, Hf-FAR-1 and Ha-FAR-1.</p
Retrofitting Masonry Walls against Out-Of-Plane Loading with Timber Based Panels
No full textUnreinforced masonry walls are prone to failure when subjected to out-of-plane loading. This is due to their low performance in bending, and often the lack of appropriate connection to returning walls and floors. This paper investigates the possibility to use oriented strand boards (OSB) panels to improve the out-of-plane performance of brick masonry walls. The proposed technique considers securing OSB type-3 panels behind masonry walls with chemical and mechanical connections. The work presents finite element models to predict their behaviour. The models have been calibrated and validated through a three-phase experimental campaign, aimed at (a) characterizing the main structural components, (b) studying the out-of-plane behaviour of small-scale masonry prisms and (c) studying the behaviour of 1115 × 1115 × 215 mm masonry walls. The finite element models developed are based on a micromodel technique developed in ABAQUS and demonstrated to adequately capture the behaviour of both plain and retrofitted models to the ultimate load. The models also show an excellent correlation of the compressive damage and tensile damage with the experimental failure pattern. Generally, the model predicted the peak load and the corresponding failure and toughness to within less than 10% of the average test results
<i>In vitro</i> binding activity of native and recombinant TsMFABPs against DAUDA and retinol.
No full text<p>Fluorescence emission spectra of DAUDA (0.1 µM, Ex<sub>max</sub> = 345 nm) (<b>A</b> and <b>B</b>) and retinol (5 mM, Ex<sub>max</sub> = 350 nm) (<b>C</b> and <b>D</b>) bound to the purified native (nTsMFABPs) (<b>A</b> and <b>C</b>) and recombinant (rTsMFABPs) (<b>B</b> and <b>D</b>) proteins (each 1 µM) were recorded at 25°C (200 µl/well) using a black 96-well micro-Fluor plate. DAUDA (10 mM stock dissolved in ethanol) was stored −20°C in darkness and were freshly diluted in ethanol just before use. The competitive binding of oleic acid (OA, 5 µM) to the performed rTsMFABP1:DAUDA or rTsMFABP2:retinol complex is also shown (<b>B</b> and <b>D</b>). TsM 120-kDa (TsM120 kDa, 10 µM) and recombinant 18-kDa (r18 kDa, 5 µM) proteins were included in the assay as negative controls.</p
Distribution of Agricultural and Rural Services in Ghana: A Public Expenditure Benefit Incidence Analysis
No full textThis dataset was produced to study distribution of agricultural rural services in Ghana. The study was undertaken by Dauda Hambali. a student in the Department of Economics at the University of Kwame Nkrumah University of Science and Technology, as a part of requirements toward Master of Philosophy Degree in Agricultural Economics. The dataset contains information gathered from a cross-sectional survey undertaken in 8 farming communities of Wenchi municipal administrative enclave of Ghana. Around 350 maize farmers were interviewed to collect information concerning household fertilizer purchases and use, farm characteristics, and demographics among many others
Experimental Evaluation of Out-of-Plane Strength of Masonry Walls Retrofitted with Oriented Strand Board
No full textStructural retrofitting is carried out as an economical alternative to demolishing and rebuilding existing masonry structures. Retrofitting is provided to offer structural upgrade and damage-control. This paper presents the application of oriented strand board type 3 (OSB/3) for retrofitting unreinforced masonry walls. Out-of-plane bending test in form of four-point loading was performed on six masonry walls. The test results show that OSB/3 can considerably increase the load and flexure capacity by (1.4 & 1.8), limiting-toughness by (1.6 & 2.4) and overall-toughness by (16 & 10) times compared to plain wall subjected to out-of-plane loading for (single & double-sided) application respectively
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Natural Resource Governance and EITI Implementation In Nigeria [Elektronisk resurs]
No full textIn their Natural Resource Governance and EITI Implementation in Nigeria, Musa Abutudu and Dauda Garuba provide the most up-to-date and in-depth analysis of the Nigerian Extractive Industries Transparency Initiative (NEITI), providing a balanced yet critical evaluation of its performance, limitations and potential as an institution for helping Africa’s largest oil exporter to escape the so called resource curse and lay a firm basis for sustainable development. This Current African Issue contains valuable insights and information that will be of interest to all those with a keen interest in institutionalising transparency and accountability in natural resource governance in Africa.</p
Abubakar Dauda. — “They love us because we give them Zakāt.” The Distribution of Wealth and the Making of Social Relations in Northern Nigeria
No full textThis book is based on a dissertation submitted in partial fulfillment of the requirements for the Ph.D at the Graduate School “Muslim Cultures and Societies” of the Freie Universität of Berlin. It is published as the twenty-third volume of the “Islam in Africa” series inititated by E. J. Brill in 2003. It is a good addition to this series, which had already made a considerable contribution to the understanding of Islam and Muslim societies in Africa. Its author, Dauda Abubakar, analyzes the p..
- …
