47 research outputs found

    Experiences and Perceptions of Liberian Business Leaders\u27 Transformational Leadership Skills

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    African business leaders may not be effective because of a lack of transformational leadership skills. Business leaders applying transformational leadership skills can strengthen relationships with followers and enhance organizational performance. The purpose of this phenomenological study was to explore the experiences and perspectives of Liberian business leaders regarding transformational leadership skills needed to lead profitable organizations. Building on a conceptual framework of transformational leadership theory, data were obtained from open-ended interviews of 20 Liberian business leaders operating in the capital city of Monrovia. Interviews were transcribed, coded, validated through transcript review, and analyzed to generate themes. The most prominent themes were the need for Liberian business leaders to act as role models, to attend to individual employee\u27s needs, and to demonstrate ethical conduct. The findings indicated that Liberian business leaders may adopt transformational leadership to help a company gain a competitive advantage, make profits, and enhance employees\u27 commitment and organizational performance. These findings may contribute to positive social change by creating awareness among Liberian business leaders about the benefits of transformational leadership to expand company operations, create employment opportunities, and contribute to poverty reduction in Liberia. Research findings may be useful information to Liberian policymakers, business leaders, and scholars seeking to understand business leadership challenges in a postconflict economy

    A proposal for calculating the no-observed-adverse-effect level (NOAEL) for organic compounds responsible for liver toxicity based on their physicochemical properties

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    Objectives: Both environmental and occupational exposure limits are based on the no-observed-adverse-effect level (NOAEL), lowest-observed-adverse-effect level (LOAEL) or benchmark dose (BMD) deriving from epidemiological and experimental studies. The aim of this study is to investigate to what extent the NOAEL values for organic compounds responsible for liver toxicity calculated based on their physicochemical properties could be used for calculating occupational exposure limits. Material and Methods: The distribution coefficients from air to the liver (log Kliver) were calculated according to the Abraham solvation equation. NOAEL and LOAEL values for early effects in the liver were obtained from the literature data. The descriptors for Abraham's equation were found for 59 compounds, which were divided into 2 groups: "non-reactive" (alcohols, ketones, esters, ethers, aromatic and aliphatic hydrocarbons, amides) and "possibly reactive" (aldehydes, allyl compounds, amines, benzyl halides, halogenated hydrocarbons, acrylates). Results: The correlation coefficients between log-log K and log NOAEL for non-reactive and reactive compounds amounted to r = -0.8123 and r = -0.8045, respectively, and were statistically significant. It appears that the Abraham equation could be used to predict the NOAEL values for compounds lacking information concerning their liver toxicity. Conclusions: In view of the tendency to limit animal testing procedures, the method proposed in this paper can improve the practice of setting exposure guidelines for the unstudied compounds
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