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1 – 10 of 22
Article
Publication date: 21 March 2008

S.A. Umoren, I.B. Obot, L.E. Akpabio and S.E. Etuk

To investigate the adsorption behaviour and inhibitive effect of Vigna unguiculata (VU) extract (agricultural waste material) for aluminium corrosion in 0.5 M NaOH and H2SO4.

Abstract

Purpose

To investigate the adsorption behaviour and inhibitive effect of Vigna unguiculata (VU) extract (agricultural waste material) for aluminium corrosion in 0.5 M NaOH and H2SO4.

Design/methodology/approach

The inhibitive effect of the plant extract was assessed using weight loss method at 30 and 60oC. The trend of inhibition efficiency with temperature was used to propose the mechanism of inhibition and type of adsorption.

Findings

VU extract effectively inhibited aluminium corrosion in both alkaline and acidic media. Inhibition efficiency (I %) of the extract increased with increase in concentration of the extract and temperature. Inhibitor adsorption characteristics were approximated by Freunlich and Temkin adsorption isotherms at all the concentrations and temperatures studied. The phenomenon of chemical adsorption is proposed from the activation parameters obtained.

Research limitations/implications

The mechanistic aspect of the corrosion inhibition can be better understood using electrochemical studies such as polarization and AC impedance spectra.

Practical implications

The findings may be useful in metal surface anodizing and metal coating.

Originality/value

This paper provides new information on the possible application of VU extract as eco‐friendly inhibitor. It has not been reported elsewhere.

Details

Pigment & Resin Technology, vol. 37 no. 2
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 1 February 2003

Nseabasi S. Akpan and Emmanuel M. Akpabio

The Niger Delta is a region in Nigeria endowed with enormous natural resources of which petroleum oil is the most exploited. This petroleum oil has been the engine of…

351

Abstract

The Niger Delta is a region in Nigeria endowed with enormous natural resources of which petroleum oil is the most exploited. This petroleum oil has been the engine of development in Nigeria since 1958, providing more than 90 percent of total exports (CBN, 1981) and over 80 percent of Federal Government revenue. Despite this, the Niger Delta people remain poor and underdeveloped. Youth restiveness and violence is the order of the day. As a product of two separate youth forums, this paper recommends good governance, youth impact assessments, youth inclusion in decision‐making, as well as capacity building as a way out of this discord.

Details

International Journal of Development Issues, vol. 2 no. 2
Type: Research Article
ISSN: 1446-8956

Article
Publication date: 6 March 2017

Santiago Flores Merino, Juan José Caprari, Luis Vasquez Torres, Luis Figueroa Ramos and Antonella Hadzich Girola

The purpose of this paper is to study the ability of commercial tara powder to convert rust into iron tannate and evaluate their use as raw material for the formulation of…

Abstract

Purpose

The purpose of this paper is to study the ability of commercial tara powder to convert rust into iron tannate and evaluate their use as raw material for the formulation of water based rust converter.

Design/methodology/approach

Water-borne acrylic primers were formulated with tara powder and aqueous tara extract and applied on steel rusted by three different methods. The conversion of rusted steel by tara tannins was studied by X-ray diffraction spectroscopy, infrared spectroscopy and scanning electron microscopy. The acrylic primers, containing hydrolysable tannins, were coated with alkyd finish and were evaluated in comparison to commercial systems in accelerated corrosion tests. The corrosion inhibition effects of tara powder on mild steel in 0.1M NaCl were studied by DC electrochemical techniques.

Findings

Tara tannin converts rust to ferric tannate and increases the magnetite content of rusted steel. The water-based acrylic primer formulated with aqueous extract of tara, alkyd-coated finish, showed performance equivalent to pure alkyd system.

Research limitations/implications

The chlorides content in the commercial tara powder can be screened the beneficial effect of hydrolysable tannins to convert rust. Furthermore, the water-based rust converter formulated with acrylic resin may be sensitive to salt contamination of rust.

Originality/value

Hydrolysable tannins from commercial tara powder have not been studied yet in its application to the development of rust converters. A water-based primer formulated with commercial tara powder developed for the effective treatment of rusted surfaces can be of interest as an environmentally friendly to current commercial approaches.

Details

Anti-Corrosion Methods and Materials, vol. 64 no. 2
Type: Research Article
ISSN: 0003-5599

Keywords

Abstract

Details

Youth Exclusion and Empowerment in the Contemporary Global Order: Existentialities in Migrations, Identity and the Digital Space
Type: Book
ISBN: 978-1-80382-777-3

Article
Publication date: 31 May 2022

Albert Anani-Bossman and Isaac Tandoh

Much of public relations scholarship in the last three decades has been dominated by discussions about best practices. Theories developed over the years have often been…

Abstract

Purpose

Much of public relations scholarship in the last three decades has been dominated by discussions about best practices. Theories developed over the years have often been based on western practices with little focus on emerging economies such as Africa. The growing call for a shift to a new system, especially from a non-western perspective has resulted in scholars examining public relations scholarship and practice in other jurisdictions, particularly in Asia. The onset of globalisation increased the scholarly discussion on public relations theorising, with culture playing a significant role in these discussions. This paper undertakes a review of the various discussions on public relations theorising due to globalisation and discusses its implications for public relations scholarship and practice in Africa.

Design/methodology/approach

The paper approaches the issue by examining relevant literature on globalisation and societal changes, public relations theorising, and the African worldview.

Findings

The paper concludes by proposing an African public relations framework that reflects the African worldview. The framework proposes that African public relations can be premised on four levels, humanist, relational, communalist, and strategic.

Research limitations/implications

This research is limited in the sense that the proposed framework has not been empirically tested for verification. It offers scholars the opportunity to empirically test it within the African setting.

Practical implications

The framework presents an opportunity for practitioners to review public relations practice within the African context.

Originality/value

The paper's originality is premised on the development of a public relations framework premised on African social values.

Details

Corporate Communications: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1356-3289

Keywords

Article
Publication date: 1 June 2012

Annmarie Nicely and Radesh Palakurthi

Sustainable tourism demands a positivistic and holistic look at the true costs and benefits of the industry to host communities. To aid leaders in starting the process…

1613

Abstract

Purpose

Sustainable tourism demands a positivistic and holistic look at the true costs and benefits of the industry to host communities. To aid leaders in starting the process, the article proposes a tourism options navigation model looking at varying number of visitors, their average daily spend and leakages, on the socio‐economic, cultural and environmental landscape of island communities. The article aims to identify various tourism options, their expected effects and potential strategies to mitigating negative outcomes and to later apply the model to the case of the rural parish of St Thomas, Jamaica.

Design/methodology/approach

To achieve the objectives outlined a comprehensive review of related literature was conducted. The researcher interviewed six of Jamaica's national tourism leaders and analyzed their responses.

Findings

It was posited that by employing strategies that impact the number of visitors to the area, their average daily spend and industry‐related economic import leakages, leaders can control the economic, social, cultural and environmental effects of tourism on communities but the process must begin with a clear articulation of the desired effects.

Research limitations/implications

The model could be a useful decision‐making tool for leaders considering tourism as a developmental option or in analyzing the current state of their communities' tourism industry. It could also form the basis for a more objective look at tourism success by researchers.

Originality/value

The model is unique as it provides a single comprehensive look at the causes and effects of tourism and possible ways forward.

Details

International Journal of Culture, Tourism and Hospitality Research, vol. 6 no. 2
Type: Research Article
ISSN: 1750-6182

Keywords

Article
Publication date: 24 May 2013

Emmanuel E. Baro, Monica Eberechukwu Eze and William O. Nkanu

The aim of the paper is to investigate the achievements of librarians from the workshop on e‐library services organized by the Librarians' Registration Council of Nigeria…

1846

Abstract

Purpose

The aim of the paper is to investigate the achievements of librarians from the workshop on e‐library services organized by the Librarians' Registration Council of Nigeria (LRCN) in collaboration with The United States Mission, Nigeria.

Design/methodology/approach

In total, 35 librarians purposively selected from universities, colleges of education, and polytechnic libraries participated in the study, which adopted semi‐structured interviews.

Findings

It emerged that librarians who participated in the workshop have been exposed to skills in areas such as database searching, using different search engines, using social media, knowledge of relevant websites, and knowledge of planning for e‐libraries. The participants are of the opinion that a workshop of this kind should be organized at least twice a year to upgrade librarians' skills on e‐library services in Nigeria.

Practical implications

Library associations in other developing countries can also partner with professionals from developed countries to organize workshops and seminars like this to equip librarians with the necessary skills to render e‐library services effectively and also to train users to use e‐resources effectively.

Originality/value

The paper reports skills the librarians have been exposed to through the workshop on e‐library services. Acquiring such skills will enable them effectively to use e‐resources and also train users on different search strategies.

Details

OCLC Systems & Services: International digital library perspectives, vol. 29 no. 2
Type: Research Article
ISSN: 1065-075X

Keywords

Article
Publication date: 5 April 2021

Marcos Komodromos

The technology determinism theory facilitated in assessing the impact of interactive radio and social network sites (SNSs) on development factors such as education…

Abstract

Purpose

The technology determinism theory facilitated in assessing the impact of interactive radio and social network sites (SNSs) on development factors such as education, agriculture, health, and governance, by conducting an integrative and comprehensive literature review focusing on African countries. This paper aims to conduct this literature review to provide comprehensive empirical evidence on the impact of interactive radio and SNSs on development in Africa.

Design/methodology/approach

This study examined articles that were retrieved from online databases including EBSCOhost, Elsevier, Science Direct, SAGE Journals, Springer and Wiley Online Library. The keywords used included interactive radio, radio, development in Africa, SNS, agriculture, education, health, peace and governance. Search phrases were formulated using boolean operators “AND” and “OR.”

Findings

Study results revealed that interactive radio and SNSs improve knowledge among farmers and allow the dissemination of information on innovative agricultural techniques, which supports the adoption of sustainable practices. Interactive radio promotes political accountability because the strategies provide the voiceless and powerless communities with a platform to express themselves. This paper discovers that the incorporation of SNS with existing multimedia communication facilitates the dissemination of health-related information on illnesses such as Ebola, HIV, hypertension, diabetes and Polio, and interactive radio and SNS promote education among marginalized communities and under-served rural schools.

Research limitations/implications

The findings on the impact of interactive radio and SNSs do not represent all 54 countries in Africa. Although the studies included in this literature review were conducted in several countries such as South Africa, Nigeria, Somalia, Kenya, Malawi, Ghana, Tanzania, Uganda and Zambia, this limited the generalizability of the findings and recommendations. Also, the other potential limitation is that using the inclusion-exclusion criteria could have resulted in bias when selecting the studies to include in the review.

Practical implications

The paper might serve as a valuable source of information for students, academics and entrepreneurs where the impact of interactive radio and SNSs on agriculture, education, health and governance, which are core determinants of development in Africa, has been assessed for further case studies in this area.

Social implications

The use of interactive radio has helped in decreasing health issues caused by a deficiency in vitamin A among children in sub-Saharan Africa.

Originality/value

The development of sustainable and effective interactive radio programs is dependent on the collaboration of the core stakeholders such as governmental ministries, donor organizations and the mass communication sector. Numerous open sources on technology radio stations are available to employ social media managers to help in the application of knowledge.

Details

Journal of Enterprising Communities: People and Places in the Global Economy, vol. 15 no. 2
Type: Research Article
ISSN: 1750-6204

Keywords

Article
Publication date: 22 November 2018

Lisa Tam

The use of sources in news coverage affects news audience’s perceptions of news events. To extend existing research on inter media agenda-setting and agenda-building…

Abstract

Purpose

The use of sources in news coverage affects news audience’s perceptions of news events. To extend existing research on inter media agenda-setting and agenda-building effects of CSR-related news, the purpose of this paper is to explore the representation and share of voices in CSR-related news by investigating and comparing the use of sources in press releases and news coverage.

Design/methodology/approach

This study content-analyzed the 202 CSR-related press releases published by the two electricity providers in Hong Kong and 1,045 news articles related to the press releases over a five-year period. A total of 402 quotes from the press releases and 1,880 quotes from the news coverage were analyzed, including the types of sources cited, the tone of the sources and variations in the use of sources across seven different CSR themes.

Findings

Although company representatives were quoted the most in both the press releases and news coverage, NGOs, government representatives and industry analysts were the most frequently cited for negative comments in the news coverage. Differences were found between the press releases and news coverage in terms of how frequently different sources were cited, the tone attributed to those sources, and the choice of sources across different CSR themes.

Originality/value

The findings reflect that corporations are not necessarily the most influential voice in CSR and that other groups also have their views represented in the news media. The representation of these voices differed by CSR themes. Corporations are advised to further explore what and how different voices are represented in the news coverage in relation to their CSR activities and to consider these voices when making decisions about CSR.

Details

Corporate Communications: An International Journal, vol. 24 no. 1
Type: Research Article
ISSN: 1356-3289

Keywords

1 – 10 of 22