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The purpose of this paper is to investigate the impact of time-periodic thermal boundary conditions on natural convection flow in a vertical micro-annulus.

Analytical solution in terms of Bessel’s function and modified Bessel’s function of order 0 and 1 is obtained for velocity, temperature, Nusselt number, skin friction and mass flow rate.

It is established that the role of Knudsen number and fluid–wall interaction parameter is to decrease fluid temperature, velocity, Nusselt number and skin friction.

No laboratory practical or experiment was conducted.

Cooling device in electronic panels, card and micro-chips is frequently cooled by natural convection.

In view of the amount of works done on natural convection in microchannel, it becomes interesting to investigate the effect that time-periodic heating has on natural convection flow in a vertical micro-annulus. The purpose of this paper is to examine the impact of time-periodic thermal boundary conditions on natural convection flow in a vertical micro-annulus.

This study aims to focus on the use of pectinase enzymes for producing clarified mango juice with blend of orange juice and to evaluate some of its quality attributes.

Mango pulp was incubated at 60^oC for 1 hr to destroy natural enzymes present in the juice. Prepared mango pulp and separately prepared orange juice were formulated into various mixes in the ratio mango:orange (v/v) 100:0, 50:50 and 0:100. A portion of the mango pulp or the one with equal volume of orange was then treated with 0.1 per cent (v/w) pectinase enzymes at 40^oC for 24 hrs. All the treated and untreated mixes were separately packed inside a bottle and pasteurized at 80^oC for 10 mins. Samples were analyzed using methods reported in the literature for some chemical and sensory properties.

From this project work, the use of enzyme (pectinase) in juice production from mango was found beneficial and profitable since it increases the yield of juice extracted. A blend of mango and orange juice which was processed with enzyme was found not to be significantly different from orange juice in terms of sweetness, appearance, flavour and general acceptability.

The paper has demonstrated effect of pectinase enzymes in the production of clarified mango juice with blend of orange juice and its acceptability.

The purpose of this paper is to use the capability approach to analyse the wellbeing of rural households in Nigeria and determine the factors that influence the wellbeing status reported.

The paper analyses multidimensional wellbeing of the households in the capability space using data in seven dimensions obtained from the Nigeria Core Welfare Indices Survey of 2006. The wellbeing status of households was derived using the fuzzy set approach, while a logistic regression was used to isolate the factors that determine wellbeing.

The results of the fuzzy set analysis showed that overall rural households in Nigeria have a low mean wellbeing status at 0.27. Capability to attain a desired state of wellbeing is highest with respect to asset ownership and lowest with respect to security. The logistic analysis shows that the predicted probability of attaining the mean capability wellbeing increases for male headed households, increasing educational level and age of the head, household size, and public service occupation.

The paper showed that the capability to attain desired levels of wellbeing increases for dimensions which are key variables in making policies for human capital development, with direct implications for improving wellbeing.

This paper attempts to bridge the knowledge gap in the empirical literature of wellbeing studies and specifically in the use of the capability approach and its application in the Nigerian wellbeing context.

The purpose of this paper is to investigate the nature and dimension of non-compliance (defiance) with lease agreement obligations in private rental housing market between managers (agents/private rental housing providers or landlords) and end-users (tenants – rental housing consumers), with a view to identifying challenges in rental housing lease administration in Nigeria emerging rental market.

The quantitative data collected from practicing estate surveyor and valuers (statutorily registered agents), who manage private rental housing in their portfolios on behalf of owners and tenants, who occupy rental housing within Lagos state (the largest property market in Nigeria and West Africa). Using a theoretical model in the context of five lease agreement obligations, data collected were analyzed using descriptive and inferential statistics (one sample t-test, independent t-test and correlation).

While economic circumstances (economic factors) are considered the major vulnerable factor that cause acts of non-compliance, defiance against “covenant not- to- sublet (subletting covenant (SC))” and “prompt rental payment covenant” are the two most non-compliance attitudes (precipitation events) observed from both actors. There is correlation among all vulnerability elements and precipitating events. While a significant relationship was only observed between “SC” and all vulnerability elements on the part of agents, there is significant relationship among all the vulnerability elements and precipitating events on the part of tenants. Also, while tenants attached higher significance to all the vulnerability factors than managers, both actors attached different level of priority to precipitating events. Lastly, equitable remedies and peaceful entry are the two most adopted intervention tools.

This paper is limited to seeking both the professional opinion of licensed/registered agents and the rental housing consumers-tenants.

The research points to an increasing need for the stakeholders – Estate Surveyors and Valuers Registration Board of Nigeria (a Government parastatal) and the Nigerian Institutions of Estate Surveyors and Valuers (the constituted professional body), to establish and reform the code of practice in this direction with due consideration to the factors identified in this study. Effort also should be upgraded in the intervention techniques adopted in order to improve on emerging rental market.

The paper explores an important aspect of lease administration in private rental housing market. It also provides platform on which the acts of defiance can be wiped out in the emerging rental market.

The purpose of this paper is to examine the impact of public policies on engendering entrepreneurship and micro, small, and medium enterprises (MSME) development in Nigeria. Gaps in policies and factors that impede entrepreneurship and MSME development are identified and proposals are offered to address the impediments.

A thorough review of the mainstream literature on entrepreneurship and MSME development is undertaken. This constitutes the reference point for identifying and reviewing specific public policies formulated and programs designed to stimulate entrepreneurial activities and facilitate MSME development. Data were obtained from federal government agencies. This paper contends that for public policies to accomplish their designed objectives of engendering entrepreneurship and MSME development, strategic realignments of various policy dimensions and programs are imperative.

Misalignments occur when existing public policies in other domains are in conflict with policies to promote entrepreneurship and MSME development. Policy misalignments negate the profit motive of entrepreneurship; stifle business innovation and expansion; and contribute to survivalist mode of entrepreneurship in the country. This thwarts the public policy goals of creating jobs and alleviating poverty.

Government needs to streamline current regulatory requirements and revamp tax policies to encourage entrepreneurs and MSMEs. Improvements in infrastructure (road networks, highways, power supply, and telecommunications) will significantly reduce overhead costs for entrepreneurs and help MSMEs to grow.

The paper demonstrates that without strategic realignments of public policies to ensure consistency and coherency in various dimensions, efforts to promote entrepreneurship and MSME development will not yield positive results. Existing public policies and programs need to be brought into tight realignment with policies and regulations in other domains to galvanize entrepreneurial efforts.

Current evidence indicates that humans and animals are at increased risk of multiple health challenges due to microplastic (MP) profusion. However, mitigation is constrained by inadequate scientific data, further aggravated by the lack of evidence in many African countries. This review therefore synthesized evidence on the current extent of MP pollution in Africa and the analytical techniques for reporting.

A literature search was undertaken in research databases. Medical subject headings (MeSH) terms and keywords were used in the literature search. The authors found 38 studies from 10 countries that met the inclusion criteria.

Marine organisms had MPs prevalence ranging from 19% to 100%, whereas sediments and water samples had between 77 and 100%. The most common and dominant polymers included polypropylene and polyethylene.

This review shows that most studies still use methods that are prone to human errors. Therefore, the concentration of MPs is likely underestimated, even though the authors’ prevalence evaluations show MPs are still largely pervasive across multiple environmental matrices. Also, the study reveals significant spatial disparity in MP research across the African continent, showing the need for further research in other African countries.

Even though some reviews have assessed MPs pollution in Africa, they have not evaluated sample prevalence, which is necessary to understand not only concentration but pervasiveness across the continent. Secondly, this study delves deeper into various methods of sampling, extraction and analysis of MPs, as well as limitations and relevant recommendations.

The main objective of this study is to examine the impact of audit data analytics (ADA) on audit quality (AQ) and audit review continuity (ARC).

Using 452 CPAs in Thailand as samples, mail questionnaires were used and sent to collect the data. Descriptive analysis, correlation matrix and path analysis were used to analyze the data.

The results of this study indicated that audit data analytics had a positive impact on AQ and ARC. Cybersecurity, used as a moderator in this study, was found to be the interaction between ADA, AQ and review continuity.

Auditors and audit firms can consider using big data in their data analytics to improve AQ and ARC.

Resource advantage theory has been used in this study to explain the impact of ADA on AQ and ARC in Thailand.

The purpose of this paper is to investigate the effects of concentrations of mixed enzymes (Rapidase EX Color and Accellerase) and incubation times on the release of biologically active compounds and the extraction efficiency of cantaloupe juice.

Different concentrations of the mixed enzymes (0.25-1.0 per cent) and incubation times (1-5 h) were used. The yield, clarity, bioactive compounds and antioxidant activities were investigated.

The total phenolic content, total flavonoid content, β-carotene, ascorbic acid content and antioxidant capacities as evaluated by 2, 2-diphenyl-1-picrylhydrazyl-radical scavenging activity and ferric reducing antioxidant power were approximately 6, 3.25, 3, 2.5, 3.5 and 3.0 times higher than the control samples after incubating with 0.5 per cent enzyme for 2 h (p < 0.05). This condition was recommended to promote the release of biologically active compounds and still provided a 32 per cent increase in the amount of the extracted juice.

Cantaloupe juice produced by enzymatic treatment could be claimed to be a source of health enhancing compounds. This work could be used as a guideline for the industry to develop high value-added functional drinks from cantaloupe.

This study evaluates for the first study on the application of Rapidase EX Color and Accellerase for improving the phytochemical compounds in cantaloupe juice. This technique could successfully extract the cantaloupe juice with biologically active nutrients containing beneficial health effects.