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Article
Publication date: 23 February 2015

E.O. Onuorah, J.T. Nwabanne and E.L.C. Nnabuife

The objective of this study was to determine the pulping and paper making potentials of oil palm (E guineensis). Fibrous material from the whole trunk (WT), empty fruit bunch…

Abstract

The objective of this study was to determine the pulping and paper making potentials of oil palm (E guineensis). Fibrous material from the whole trunk (WT), empty fruit bunch (EFB, fronds (FDS) and depithed trunk (DT) were evaluated using proximate chemical analysis, fiber morphological and related characteristics. Effect of active alkali (AA) % as Na2O on kraft pulping properties and the handsheet paper propertie was studied. Proximate chemical analysis reveal acceptable cellulose content for EFB (43.51%), FDS (51.13%) and DT (53.80%) while WT (32.44) is unacceptable. Low lignin content obtained (17.8−21.8%) suggests easier pulping characteristics. The high % NaOH solubility of WT (26.05%) and FDS (32.1%) suggest potential of high effluent loads. Fiber morphological studies revealed that approximately 83% of fibers are ≤ 1.5 mm in length thus putting oil palm as a short fiber source. The slenderness ratio ranges from 33.44 to 82.80; Runkelratio from 0.40 to 0.63; flexibility co-efficient from 57.20 to 71.46 and rigidity co-efficient from 0.29 to 0.43. Studies of pulping properties reveal that as active alkali % was increased the percentage total pulp yield, % screened pulp yield, % screened rejects, pulp kappa number, klason lignin and tear index of resultant pulp/handsheet all/each decreased. Conversely, as active alkali % was increased the Brust index, double fold number, breaking length, tensile index of paper handsheets and pulp brightness were each enhanced. It was concluded that in pulping of WT AA% should be < 14 and EFB pulping should be ≤ 14 in order to have acceptable yield. Also in order to have acceptable tear index, AA% should be ≤ 16. It is being recommended that trunks should be depithed in order to have acceptable yield. The fibrous material from oil palm make acceptable raw material for paper making and are good hardwood substitutes. Paper produced when bleached can be used for printing and writing papers while the unbleached grades can be used for wrapping and package papers and for corrugated boards.

Details

World Journal of Engineering, vol. 12 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 23 December 2015

E. O. Onuorah, C.A. Okeke, J. T. Nwabanne, E. L. C. Nnabuife and S. O. M. Obiorah

Cement bonded composites of 1250 kg/m3 were made in the laboratory either as single layer composed of exclusively oil palm empty fruit bunch (EFB); Tropical hardwood sawmill…

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Abstract

Cement bonded composites of 1250 kg/m3 were made in the laboratory either as single layer composed of exclusively oil palm empty fruit bunch (EFB); Tropical hardwood sawmill residue (THSR) or randomly mixed particles (40% of EFB and 60% of THSR oven dry wt/wt) OR of 3-layer composed of 1:2:1 ratio (for face layer of THSR; core layer of EFB and back layer of THSR particles, wt/wt, respectively). Composites were produced at 4 levels of CaCl2 addition (0, 1, 2 and 3% wt/wt based on cement wt) and 6 levels of initial water content of the cement/aggregate mixture (2.5:1:0.5; 2.5:1:1; 2.5:1:1.5; 2.5:1:2; 2.5:1:2.5 and 2.5:1:3; ratio wt/wt based on cement wt plus oven dry wt of particles). Proximate chemical analysis of representative samples reveal hollocellulose content (77.35 and 74.11%); a-cellulose (43.51 and 52.01%); Hemicellulose (22.9 and 20.2%). Lignin (17.8 and 22.5%); Ash (0.91 and 1.85%) and solubility in Alcohol-benzene (1.6 and 3.98%); cold water (2.42 and 3.15%); Hot water (2.93 and 5.06%); and 1% NaOH (23.4 and 26.11%) respectively for EFB and THSR. Also Morphological studies reveal mean fiber length (1.06 and 1.18mm); Fiber diameter (11.75 and 17.40μm), slenderness ratio (55.79 and 35.98) and Rigidity co-efficient (0.38 and 0.47) respectively for EFB and THSR. The above make both particle sources suitable substitutes for virgin fiber/particles from hardwoods. A total of 192 composites were made representing two panels per production mix. Composites were sampled and tested in accordance with provisions of ASTM D1037-2007. Composite properties ranges are MOR (2.61–20.81 MPa); MOE (2180–5764 MPa); IB (0.28–0.75 MPa). WA (16.41–28.11%) and TS (1.26–5.98%). Properties were evaluated and only production mix that met both the requirements of International Organization for Standardization (10S 8335–1987) and Malaysian Standard Institute (MS 934–1984) were recommended. Acceptable composites were produced from production mix of initial water content ≥1.5 or 30% (based on cement wt + oven dry wt of particles, wt/wt) and 2 or 3% CaCl2 additive in case of single layer composites while ≥ 2 or 36.36% of initial water content is required in 3-layer composite using same additive level. The effects of furnish type and composition, additive level and initial water content on properties were all found significant (P > 0.01) in factorial analysis.

Article
Publication date: 8 March 2019

Almasdi Syahza and Brilliant Asmit

The purpose of this paper is sixfold: first, to know the ability of area carrying capacity to the development of downstream oil palm industry; second, to know the potential for…

1051

Abstract

Purpose

The purpose of this paper is sixfold: first, to know the ability of area carrying capacity to the development of downstream oil palm industry; second, to know the potential for the development of downstream oil palm industry in efforts to improve the community through employment and business opportunities in the regions; third, to find eco-friendly institutional arrangement strategies of oil palm farming in order to spur economic growth and development; fourth, to formulate strategies for potential environmental impact as a result of institutional arrangement and development of downstream oil palm industry, both in regional and national scope; fifth, to predict the economic multiplier effect as impact of institutional arrangement and development of oil-palm-based downstream industry; and sixth, to include production centers and development areas of oil-palm-based downstream industry in potential areas.

Design/methodology/approach

Research location was in potential areas of oil palm plantation development, either in the form of plasma through state-owned enterprises (BUMN) and private-owned enterprises (BUMS), or in the form of self-supporting by community. The research locations were divided into two parts, namely the land area and the coastal area. The land area of Riau consisted of Kampar, Rokan Hulu and Kuantan Singingi Regency, while the coastal area of Riau consisted of Pelalawan, Siak, Bengkalis, Indragiri Hilir, Indragiri Hulu and Rokan Hilir Regency. Both research areas had different productivity which was caused by differences in soil fertility. The required data were primary and secondary data.

Findings

Plantation activities have increased the mobility of goods in the villages, causing plantation activities to also open business and employment opportunities for people who are able to accept these opportunities. Since post-1998 crisis, the growth of oil palm plantation area in Riau increased sharply, namely in 1998, the area of oil palm plantations was 901,276 ha, in 2012, 1,119,798 ha and increased to 2,103,175 ha at the end of 2017. Through economic activities that produce goods and services required during the plantation process and the development, downstream industries will have backward linkages. The development of oil palm plantations in Riau has had an impact on economic activities in rural areas. The result of the research in the field is that the average income of farmers in the plantation subsector (especially oil palm) is Rp4,576,696 per month or $5,781.09 per year. The impact on investment in the estate subsector has been felt by rural communities. This condition also affects the purchasing power of the people, resulting in the increase of mobility of goods and people. During the period 2009–2016, rural communities enjoyed a high level of prosperity. During this period, the price of fresh fruit bunch at the farm level was quite profitable. On the other hand, the production of the plantation area also increased compared to the previous period. The impact of rising prices and increasing production of farmers is that the farmers’ welfare index in the countryside had a positive value of 0.43. This index showed the increase of farmers’ welfare from the previous period by 43 percent.

Originality/value

There are few previous studies which have comprehensively and specifically reviewed the regional economic empowerment through institutional arrangement and development of oil-palm-based downstream industry. The development of oil palm plantations aims to eliminate poverty and underdevelopment, especially in rural areas. In addition, it also pays attention to equity. In broad sense, agricultural development which is based on plantations aims to improve the welfare of the community so that there is a change in the pattern of life of the surrounding community. On the other hand, the success of plantation development that is based on oil palm agribusiness is expected to reduce income inequality between community groups and between regions.

Details

Management of Environmental Quality: An International Journal, vol. 30 no. 6
Type: Research Article
ISSN: 1477-7835

Keywords

Article
Publication date: 4 April 2019

Almasdi Syahza

The purpose of this paper is to develop strategies for potential environmental impacts as a result of institutional arrangement and development of oil palm downstream industry…

1704

Abstract

Purpose

The purpose of this paper is to develop strategies for potential environmental impacts as a result of institutional arrangement and development of oil palm downstream industry both regionally and nationally.

Design/methodology/approach

The research location is in the areas potential for oil palm plantation development, either by plasma through BUMN and BUMS or self-supporting by the society. The research location will be divided into two parts, namely, the land area and the coastal area. The Riau land areas are Regency of Kampar, Rokan Hulu, and Kuantan Singingi, while Riau coastal areas are Regency of Pelalawan, Siak, Bengkalis, Indragiri Hilir, Indragiri Hulu and Rokan Hilir. Both research areas have different productivity due to the different soil fertility levels. The sustainability level of oil palm plantation from the socio-economic and environmental aspects is analyzed using the multi-dimensional scaling approach modified into Rapid Appraisal-Index Sustainability of Palm Oil Management.

Findings

In Riau Province, the development of oil palm is quite rapid. This is reasonable for several reasons which include the following supporting factors: the geographical condition of the Riau region is very supportive; the high demand for palm oil derivative products; the existence of market guarantee for oil palm farmers; the higher income oil palm generates than other plantation crops; and the relatively flat area. Most of the problems faced by oil palm farmers are the use of less good seeds, the length of the fruit laying at the location of the plantation, the inadequate production road, the relatively far distance to palm oil mill (POM) (National Agency of Drug and Food Control), the tendency of determining the unilateral revenue of the POM, the collectively measurement of revenue and the general revenue information. The development of oil palm plantations has created an entrepreneurial capability for farmers who are able to capture business opportunities in the agricultural sector, especially the plantation sub-sector.

Originality/value

The originality of this paper shows the comprehensively control strategy, potential of environmental impact and palm oil plantation. The method used for data collection was rapid rural appraisal method because accurate information is needed in a limited time as it relates to decisions related to village development that must be taken immediately. The study area was conducted in Riau Province because Riau Province is one of the biggest palm oil producers in Indonesia. The study sites will be divided into two, namely, the land area and the coastal area.

Details

Management of Environmental Quality: An International Journal, vol. 30 no. 5
Type: Research Article
ISSN: 1477-7835

Keywords

Article
Publication date: 6 May 2022

Adah-Kole Emmanuel Onjewu, Mohamed Yacine Haddoud, Uchenna Tony-Okeke, Dongmei Cao and Witold Nowiński

Scholars have typically examined family business exposure as an aggregate variable. However, it is probable that this trend oversimplifies the complexity of family exposure and…

2699

Abstract

Purpose

Scholars have typically examined family business exposure as an aggregate variable. However, it is probable that this trend oversimplifies the complexity of family exposure and its nuanced influence on entrepreneurial behaviour. Thus, to extend the theoretical boundary, this inquiry investigates distinct dimensions of family exposure in Nigeria while drawing on the theory of planned behaviour.

Design/methodology/approach

Data were collected from five public universities in Nigeria. A sample of 1,314 respondents was analysed using a partial least squares structural equation modelling approach to determine the influence of alternate family business exposures.

Findings

The results show that entrepreneurial exposure in the forms of parent, family member and work involvement have salient and distinctive influences on implementation intention to the extent that entrepreneurial self-efficacy, attitudes and subjective norms are uniquely impacted.

Originality/value

This study offers novel insights on the predictors of entrepreneurial implementation intention through the distinctive effects of (1) family member exposure, (2) parent exposure and (3) work involvement exposure among students in the family firm context.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 28 no. 6
Type: Research Article
ISSN: 1355-2554

Keywords

Article
Publication date: 1 February 2024

Meysam Manesh, Assad Tavakoli, Adebukola E. Oyewunmi and Soma Pillay

This paper aims to understand employees’ propensity to blow the whistle in two East African countries. This study develops a model of ethical decision-making (EDM) to assist…

86

Abstract

Purpose

This paper aims to understand employees’ propensity to blow the whistle in two East African countries. This study develops a model of ethical decision-making (EDM) to assist management in predicting the probability of whistleblowing in Kenya and Uganda. It also seeks to find the moderating effect of perceived retaliation on whistleblowing intention.

Design/methodology/approach

This study administers a standardized questionnaire to employees in Kenya and Uganda to measure their perceptions about whistleblowing in their organizations. This study uses partial least square structural equation modeling to test the hypotheses. This study uses four constructs, namely, awareness, judgment, retaliation and likelihood, of blowing the whistle. These constructs are measured with multiple-item scales.

Findings

The results show that ethical awareness and judgment significantly increase willingness to engage in whistleblowing in East Africa. However, this study does not find a significant retaliation effect on whistleblowing intention. Instead, this study finds that awareness and judgment mediate between retaliation and willingness to engage in whistleblowing.

Research limitations/implications

This study contributes to EDM topics. It advances the understanding of the whistleblowing concept, the retaliation effect and the reasons to encourage blowing the whistle in Africa. However, this study did not consider cultural factors, such as nationality, patriotism and ethnicity. Moreover, the results are only based on data from Uganda and Kenya and may not apply to other sub-Saharan nations.

Practical implications

These findings are particularly significant for managers and policymakers in East Africa, where fear of retaliation and lack of awareness are the main barriers to whistleblowing. The results may help managers develop human resource practices to include policies to support moral behavior. It may also provide insights to the policymakers to understand the factors that facilitate whistleblowing practices and help them to adopt new strategies or policies to stimulate whistleblowing culture.

Originality/value

This study is one of the initial empirical studies in the East Africa context to explore the EDM predictors and the impact of retaliation on the whistleblowing intention.

Details

Society and Business Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-5680

Keywords

Article
Publication date: 15 November 2019

Babatunde Akanji, Chima Mordi, Afam Ituma, Toyin Ajibade Adisa and Hakeem Ajonbadi

The purpose of this paper is to explore the impact of organisational culture (OC) on leadership styles in Nigerian universities. The study utilises the cultural dimensions theory…

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Abstract

Purpose

The purpose of this paper is to explore the impact of organisational culture (OC) on leadership styles in Nigerian universities. The study utilises the cultural dimensions theory (Hofstede’s insights) and the social exchange concept as theoretical lenses to examine the phenomena.

Design/methodology/approach

Using an exploratory qualitative approach, 40 interviews were conducted with senior academics and non-teaching staff working in Nigerian universities.

Findings

The findings reveal hierarchical, patriarchal, servile, and interdependent values as the underlying characteristics of organisation culture, shaping the choice of leadership styles in the management of Nigerian universities. As a result, it emerged from the study that positional, formalised exchanges, paternalism, relational approach and gendered reactions to leadership were typically adopted in university administration in this context.

Research limitations/implications

The study relies on a small qualitative sample size, which makes the generalisation of findings difficult. However, the study provides a good understanding of cultural hegemony, framing leadership styles different from those of western cultures.

Originality/value

The findings of this study help to bridge the research gap concerning the implications of OC, and its influence on leadership behaviours in the Sub-Saharan African context. Research within this subfield in Africa is rare. Specifically, the study also enriches our understanding of cultural dimensions, informing the leadership methods adopted in higher education institutions.

Details

Personnel Review, vol. 49 no. 3
Type: Research Article
ISSN: 0048-3486

Keywords

Article
Publication date: 17 January 2020

Fahad Shakeel, Peter Mathieu Kruyen and Sandra Van Thiel

The purpose of this paper is to offer a review of the selected literature in ethical leadership synthesizing findings from 45 articles selected from journals on leadership, public…

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Abstract

Purpose

The purpose of this paper is to offer a review of the selected literature in ethical leadership synthesizing findings from 45 articles selected from journals on leadership, public administration, organizational behavior, psychology and ethics.

Design/methodology/approach

Four themes are addressed: the conceptualization of ethical leadership theories, the existence of popular measurement instruments for ethical leadership, findings on ethical leadership in the public sector and outcomes of ethical leadership in terms of benefits and negative consequences.

Findings

The definition by Brown et al. (2005) is the most frequently used definition, even though recent criticism states that this definition may be too narrow. Ethical leadership is usually measured by means of a survey; however, there are at least three different questionnaires in use. In the public sector, ethical leadership has been linked to both positive outcomes and negative consequences.

Research limitations/implications

This paper only includes selected academic articles and does not include published books.

Originality/value

Based on our findings, the authors present recommendations for future research, among others into a broader conceptualization of ethical leadership and the use of mixed methods.

Details

International Journal of Public Leadership, vol. 16 no. 1
Type: Research Article
ISSN: 2056-4929

Keywords

Article
Publication date: 9 April 2010

Ezimma Kate Nwadiogwa Nnabuife

The purpose of this paper is to examine the current gap existing between ethics theorization and enforcement in the Nigerian leadership system.

1941

Abstract

Purpose

The purpose of this paper is to examine the current gap existing between ethics theorization and enforcement in the Nigerian leadership system.

Design/methodology/approach

In an attempt to achieve the objective of the paper, some ethical issues in the Nigerian governance and the several regulatory and enforcement agencies set up to curb ethical menace were critically examined. The achievements of the bodies were also evaluated.

Findings

The paper concludes that the apparent gap which continues to exist is not a function of ethical definition but results from challenges in the enforcement which are thematically grouped under leadership, societal and individual variables.

Research limitations/implications

The analysis suggests that bridging the ethical gap in Nigeria depends largely on leadership which must be by example.

Originality/value

This paper presents an invaluable challenge to leadership in Nigeria who must reposition their responsibility.

Details

African Journal of Economic and Management Studies, vol. 1 no. 1
Type: Research Article
ISSN: 2040-0705

Keywords

Article
Publication date: 4 January 2024

Moustafa Haj Youssef, Jahangir Wasim, Ioannis Christodoulou and Robert Reinhardt

The aim of this study is to explore and elucidate the influence of polygamy on the succession dynamics of family businesses in the Arab world, offering insights that may be…

Abstract

Purpose

The aim of this study is to explore and elucidate the influence of polygamy on the succession dynamics of family businesses in the Arab world, offering insights that may be underrepresented or overlooked in traditional, Western-focused literature.

Design/methodology/approach

This article adopts a perspective-based approach, focusing on delving into the amalgamation of polygamous family structures and their implications on the operation and continuation of family-run businesses.

Findings

Polygamy, while often primarily perceived as a cultural or religious tradition, wields substantial influence over various business facets. Notably, its presence can significantly shape business continuity, the methodologies behind succession planning and the overarching framework of corporate governance within Arab family businesses.

Originality/value

This article offers a unique Middle Eastern lens, highlighting the underexplored intersection of polygamy and business succession. It strives to bridge the knowledge gap by addressing topics potentially sidelined in mainstream Western business research.

Details

Journal of Family Business Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2043-6238

Keywords

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