21 research outputs found
Rice Husk as Precursor for Silicon Oxide Nanoparticles: Synthesis and Characterization
No full textAuthor: Nsikak Bassey Essien
Received: 19 April 2024/Accepted: 09 August 2024
Traditionally, SiONPs have been synthesized using conventional methods involving the use of toxic chemicals and high-energy processes. These methods raise concerns regarding environmental impact and production costs. In recent years, a growing emphasis has been placed on developing eco-friendly and cost-effective approaches for SiONP synthesis. Rice husk, a by-product of rice cultivation, represents a significant source of agricultural waste. It is estimated that over 100 million tons of rice husk are generated globally each year (Ahmad et al., 2011). This abundant waste material presents a compelling opportunity for the development of sustainable SiONP synthesis methods.Rice husk is a rich source of silica (SiO2), a key component of SiONPs. Notably, the silica content in rice husk can vary between 50-70% by weight, depending on the rice variety and geographical location (Ahmad et al., 2011). This inherent characteristic makes rice husk a promising bioresource for SiONP synthesi
Some differences between fraternity men and non-fraternity men in a liberal arts college, 1958
No full textWhat teacher educators consider as best practices in preparing pre-service teachers for teaching Mathematics in multilingual classrooms
No full textThis paper reports on an investigation into what teacher educators consider to be best practices in how to prepare pre-service teachers to effectively deal with the challenges of teaching Mathematics in multilingual contexts, and how what teacher educators consider as best practices inform their own classroom practice. Twelve teacher educators (TEs) from four universities in a province in South Africa participated in the study. Through a qualitative analysis of the interviews, five practices emerged as best practices for these teacher educators: the use of code switching, the creation of an environment of trust in the classroom, the use of one (rather than two) medium of instruction, namely English, the use of linguistic metaphors that the languages present in the class potentially provide for use in mathematics, and, finally, the creation of an awareness of the multilingual context in which pre-service teachers would teach at the end of their qualification. Given that most teachers in South Africa teach in multilingual classrooms and teacher education research on mathematics education has not, thus far, focused on multilingual mathematics education, it is hoped that these five practices would serve as an inducement for both teacher educators and researchers alike. The author also cautions against the adoption of imported practices from other countries and argues that in delineating practices that are more likely to work in the South African context, it is important to bear in mind the distinctive nature of multilingualism in South Africa
‘Uberization’ as Neoliberal Governmentality: A Global South Perspective.
No full text© The Author(s) 2019. Using the neo-Foucauldian literature on neoliberal governmentality as conceptual lens, this paper critically examines Uber’s influence on the governance of urban transport. It argues that ‘uberization’ represents a form of neoliberal governmentality in which Uber replaces the state as the arbiter and protector of citizenship. It distils the underlying logics of uberization through four discursive moments of subjectification and subjectivation in Ghana’s transport sector. Mainly conceptual but interlaced with empirical moments, the paper makes a vital contribution to the literature on how new forms of neoliberalization manifest through varied techno-material instruments in global south cities
Comparison of fluoride uptake by Bovine and human dental enamel, 1978
No full textBovine and human dental enamel show similar behavior in fluoride uptake studies performed. Even though bovine dental enamel has a low natural fluoride level, it will serve well as a substitute for human dental enamel for comparative fluoride ion experiments
An analysis of the introduction of the equal sign in three Grade 1 textbooks
No full textThis paper attempts to analyse how the concept of the equal sign is introduced to learners in Grade 1 textbooks in use in South Africa. In doing this, three Grade 1 textbooks (learner’s book and their accompanying teacher’s guide) were analysed in terms of the first appearance of the equal sign. Analysis reveals that the equal sign is introduced operationally and its introduction is subsumed in the introduction of the addition and subtraction signs. The author argues for the equal sign to be accorded equal status and attention as the addition and subtraction symbols by both the curriculum and Grade 1 textbooks and also makes an argument for the introduction of the equal sign first (using appropriate pictorial representations and artefacts) before the introduction of the plus and minus signs
Peculiarity in the Coinages, Collocations and Allusions in Wole Soyinka’s "the Interpreters"
No full textSoyinka has often been labelled as an ‘obscure’ and ‘difficult’ writer. One text which helps in giving him this reputation is The Interpreters which has not enjoyed as wide a readership as other texts published at the same period. This paper is an attempt to delineate the peculiarities in the way Soyinka uses familiar literary devices and by so doing the paper argues that an understanding of these peculiar usage goes a long way in demystifying the text under study and to a large extent may serve as a clue to studying other works of the author. The paper uses the lexico-semantic approach in conjunction with the concept of the context of situation to examine samples of texts drawn from the novel. The analysis shows the language in the novel is characterised by peculiar collocations, coinages distorted idioms and some syntactic gymnastics. The paper demonstrates that the so-called obscurity could be erased if one understood Soyinka’s pattern of gymnastics with words and sentence structure
The role of development finance institutions (DFIs) in the financing of small-scale industries (SSIs).
No full textThe post-independence Nigerian government adopted the import-substitution large-scale industrialisation strategy to accelerate the country\u27s industrial development. Industrial output as well as industry\u27s contribution to the gross domestic product (GDP) declined in the face of the strong national aspiration for the restructuring of the economy and reduction of the dependence on petroleum. Small and medium scale industries have since become the focus of national industrial policy. ln order to put our discussion into proper perspective, we need to know what we mean by SSls in the Nigerian context. The following are the current official definitions of industrial enterprises adopted by the 13th Meeting of the National Council on industry (NCl-13) in Makurdi, Benue State, in July, 2001. The author concludes that the future of Nigeria\u27s industrialisation process is largely dependent on the fortunes of the SSls sub-sector considering its inherent benefits to a developing economy. lt is the sub-sector that holds the promise of meeting Nigeria\u27s industrialisation challenges in this century. Consequently, all the parties involved in the promotion of the sub-sector (government, private sector, and the banking system) must jointly ensure that the subsector is given all the support it needs to play its role effectively
Post-publication Analysis of Digital Culture and Education Journal (DCEJ) from 2009 to 2018
No full textThis study analysed the trends and patterns of articles published in Digital Culture and Education Journal (DCEJ) from 2009 to 2018 covering a period of 10 years. Five bibliometric measures were used for the analysis: Year-wise productivity of articles; authorship pattern of articles; core authorship; degree of author collaboration; Institution and country affiliation of authors in DCEJ. The results revealed that a total of 108 articles were published and the year 2014 (Vol. 6) had the highest number of articles with 26 (24.07%). The most prolific authors was Fabian Schäfer with three (3) articles. Single authorships were the most productive with a total of 60 (55.56%) publications. The degree of collaboration was highest at 0.8 in Volume 10 (2018). Authorship emerged from 26 countries and authors from United States of America were the highest number with 68 (30.09%). Authorship affiliated to Universities had the highest number of 161 (71.24%) articles. The findings suggests that although collaborative research is common in DCEJ, there is need to encourage multidisciplinary collaborations. This is because of the high number of single authorship patterns identified in the study. The complex nature of DCEJ will require a mix of ideas with multidisciplinary collaborations. This may be achieved by creating awareness and proper indexing in reputable databases, which will encourage visibility and build interest in the journal. Also, some important authorship information were not given such as sex and affiliations. It is recommended that the editorial team should include and ensure that future researches comply with authors’ guidelines for submission
What teacher educators consider as best practices in preparing pre-service teachers for teaching mathematics in multilingual classrooms
No full textThis paper reports on an investigation into what teacher educators consider to be best practices in how to
prepare pre-service teachers to effectively deal with the challenges of teaching Mathematics in multilingual
contexts, and how what teacher educators consider as best practices inform their own classroom practice.
Twelve teacher educators (TEs) from four universities in a province in South Africa participated in the
study. Through a qualitative analysis of the interviews, five practices emerged as best practices for these
teacher educators: the use of code switching, the creation of an environment of trust in the classroom, the
use of one (rather than two) medium of instruction, namely English, the use of linguistic metaphors that
the languages present in the class potentially provide for use in mathematics, and, finally, the creation
of an awareness of the multilingual context in which pre-service teachers would teach at the end of their
qualification. Given that most teachers in South Africa teach in multilingual classrooms and teacher
education research on mathematics education has not, thus far, focused on multilingual mathematics
education, it is hoped that these five practices would serve as an inducement for both teacher educators
and researchers alike. The author also cautions against the adoption of imported practices from other
countries and argues that in delineating practices that are more likely to work in the South African context,
it is important to bear in mind the distinctive nature of multilingualism in South Africa.Publisher's versio
