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The purpose of this paper is to investigate the degree of improvement in mechanical properties of aluminum alloy (AA6063) after processing with equal channel angular extrusion (ECAE) using four environmentally benign lubricants.

Aluminum (Al) 6063 bar was annealed at 350°C for 1 hour, machined and cut to billets measuring 14 × 14 × 44 mm3. These specimens for extrusions were machined to the specified dimension to a visibly good finish. The billets were extruded through ECAE die of 14 × 14 mm2 channel cross-section area; the channel angle was 120°; and the angle of the outer arc of the channels was 30°. The punch and container used for the experiment were made of tool steel alloy AISI D2, and were chromium-coated and polished. Four lubricants such as palm, olive, coconut and groundnut oils were used in this study.

The yield, ultimate tensile strengths (UTS) and the ductility of the material ECAEed with palm oil as lubricant, which gave the least extrusion pressure, produces the maximum yield, UTS and ductility, followed by groundnut oil and coconut oil, while olive oil gave the least yield strength, (UTS) and ductility. However, palm oil and olive oil have better load reduction than other lubricants. Furthermore, from the hardness results, though scattered, all of the points at the tensile strained side of the extrudate lie within a reasonably narrow band, suggesting a high degree of homogeneity and greater hardness value within the rod than the compressive side after being ECAEed.

It is shown in the paper that all the lubricants tested greatly enhanced mechanical properties of Al 6063 and can effectively replace the petroleum-based lubricants used in forging operations.

Social media advertising (SMA) has become overly critical in the interactive marketing research field. This paper aimed to construct a research architecture model and to investigate the mediating effect of customer engagement between SMA and consumer behavioral intention in the context of Macao's casino integrated resorts.

The authors collected data from 300 Chinese-speaking visitors of Macao's casino integrated resorts through a face-to-face survey. The hypotheses derived from the conceptual model were tested through two-stage structural equation modeling. The authors considered age and gender as control variables.

This study found that entertainment and promotional rewards had significant direct effects on consumption intention. Social media dependency did affect directly not only consumption intention but also sharing intention. Customer engagement on SMA mediated the effects of two SMA features (entertainment and promotional rewards) and one feature of SMA viewers (social media dependency) on consumption intention. As to extraneous variables, neither age nor gender significantly influenced consumer behavioral intention.

The casino integrated resort managers should enhance the entertainment elements and provide reasonable promotional rewards to increase SMA's effectiveness. Managers should also consider the social media usage habits of the targeted customers. Further academic research on casino integrated resorts in other regions may use this study as a basis for investigating the mediation of customer engagement on SMA.

This study contributed to understanding the mediating mechanism of customer engagement on SMA by conceptualizing customer engagement on SMA as a unique idea and provided a conceptual framework for further theoretical and empirical research in the interactive marketing research field.

Agriculture and related businesses in Ghana for the past decades have been the preserve for the smallholder, aged and illiterate farmers. Meanwhile, hundreds of students graduate in Agricultural Sciences from the universities over the years. This study seeks to investigate potential determinants of the entrepreneurial spirit of agricultural students to do self-employed businesses in the agricultural sector. A survey of 165 undergraduate students of agriculture in the University of Cape Coast, Ghana was undertaken to examine factors that influence their decision to enter into agribusiness as a self-employment venture after graduation. The results show that the majority of the students were males (87%) and approximately, 67% were willing to enter into agribusiness after school. The factors that students perceived to be hindrance to entering into agribusiness was the market competition of agro-products with imported products, unstable prices of agro-products, absence of insurance policy for agribusiness and unfavourable land tenure arrangement in Ghana. Correlation analysis showed negative and significant relationship between students’ willingness to enter agribusiness as a self-employment venture and the following personal characteristics: (1) level of education of mother, (2) level of education of guardian other than parents, (3) students who live in farming communities and (4) students who undertake farming activities at home. There were also positive and significant relationships between students’ willingness to enter agribusiness and the following: (1) availability of market for agro-products, (2) accessibility of market for agro-products and (3) accessibility of transportation facilities for agribusiness. Regression analysis showed that (1) level of education of mother, (2) students living in farming communities, (3) accessibility of transportation facilities for agribusiness and (4) accessibility of market for agro-product were the factors that best predict undergraduate agricultural students’ willingness to enter into agribusiness as a self-employment venture after graduation. To motivate students to take agribusiness as self-employment after graduation, the study suggests the development of comprehensive and sustainable long-term policy to inspire and attract the youth into agribusiness; creation of conducive environment to minimise risk and constraints associated with agribusiness in Ghana.

Bambara groundnut is a hard-to-cook grain and this has limited its utilisation to some extent. However, the grain is a good source of phytochemicals with antioxidant properties. This study investigated the total phenol content, antioxidant, anti-inflammatory and anti-microbial potentials of hot-water extract of four Bambara groundnuts differentiated by their seed coats (cream, black, maroon and brown).

Bambara grains were heated in water at a ratio 1:20 (w/v) and the grains brought to boiling in a controlled water bath. As soon as boiling started, the temperature was reduced to 90 °C to reduce the evaporation rate. The extracts were withdrawn within 30 min, which was chosen from a preliminary study where beyond this time, the extract was drying off and the amount of solution obtained was not sufficient for the initial run. Grain colour and composition and antioxidant, antimicrobial and anti-inflammatory properties of the extract were determined using standard methods.

Protein (20.57–26.31%) and carbohydrate (55.43–61.09%) were the major components of the grain. Grain type and boiling time generally affected the total phenolic content of the extract. Cream Bambara displayed substantially lower total phenolic content at all boiling times compared with the maroon, brown and black Bambara groundnuts. The total flavonoid contents and total phenolic contents of the Bambara groundnut extracts were dependent on the boiling time and type of grain. The extracts showed no activity against Candida albicans, but the maroon coat Bambara demonstrated a peak inhibition of 6.00 mm against Escherichia coli. The total phenolic, flavonoid contents and the antioxidant properties of the grains generally followed the order Maroon > Black > Brown.

This study has demonstrated the possibility of promoting the use of Bambara groundnut beyond the current level of usage by using simple processing method of boiling to extract phytochemicals with medicinal properties.

This study aims to contribute to the emerging discourse on elite financial crime, with particular attention devoted to the role played by the legislature in corrupt practices in Nigeria. Separations of power, watchdog role of legislature and ideologies have become a major influence in democratic system. Legislative power has developed as a means of providing oversight functions over the executives, thereby inhibiting fraudulent practices in governments.

The paper argues that the political institutional structures embedded with monopoly, discretion and little or no accountability facilitate financial corrupt practices within the legislature. The paper uses publicly available evidence to show that the legislators in developing countries are actively engaged in corrupt practices.

The evidence provided in this paper shows that separation of power and representative democracy had not brought about transparency and accountability in government activities in Nigeria. Legislature often trade-off their constitutional power and their claim of service to the public interest by engaging in financial criminal practices.

This paper does not set out to provide a comprehensive analysis of political corruption. Instead, it considers the “dark” side of legislative practice by examining the involvement of legislature in facilitating corrupt financial practices in Nigeria.

The inability of the regulators to effectively sanction legislators implicated in corrupt practices suggests that the current institutional and regulatory apparatus are not fully equipped in dealing with the financial criminal activities of legislators.

Despite the arrest and prosecution of some legislators, a number of cases are swept under the carpet. Therefore, this paper suggests that Nigeria need to reform its political system and institutions to promote transparency and accountability in government and to build trust in the legislative process.

This paper considers the “dark” side of legislative practice by examining the involvement of legislature in facilitating corrupt financial practices in Nigeria.

This article aims to explore the Nigerian government's budgetary response to the COVID-19 pandemic as well as the economic and social implications of the pandemic response.

Our analysis is based on a review of secondary evidence such as Nigerian Federal Government budget documents, policy documents, Central Bank of Nigeria circulars, news media articles, World Bank and International Monetary Fund reports, reports from Big Four accounting firms and policy think-tanks.

The authors highlight how increased borrowing to fund COVID-19 related economic and social interventions have significantly squeezed Nigeria's fiscal space. The authors also highlight that while some interventions provide short-term economic relief to the poor and small businesses, other interventions and gaps in the policy response have the potential for significant negative impact on businesses, households and unemployment. In addition, the authors highlight the potential for long-term benefits to the health sector and for private sector engagement in corporate responsibility and philanthropy.

The authors present a comprehensive account of the Nigerian government's budgetary response to the COVID 19 pandemic and the economic and social implications of this response.