background: work-related musculoskeletal disorders (wmsds) have been documented among various occupational groups in nigeria. however, there is limited data on the prevalence of wmsds among call center operators (ccos). objective: to determine the prevalence of wmsds among ccos in nigeria and to explore the extent to which these discomforts impact the daily work activities of the respondents. m...

P roductivity promotion has received a key attention in contemporary macroeconomic analysis. Productivity of labor driven, in particular, by human capital (i.e. health and education), is seen vitally more important. Labor qualities in terms of health and education (treated as flow and stock variables), have a bearing on labor productivity. The main objective of this paper is to ident...

wastewater production is increasing every year. the variety of contaminants necessitates the application of effective and advanced treatment methods. among the materials that  are predominantly used for wastewater treatment are carbon nanotubes. exposure to the residuals of carbon nanotubes after wastewater treatment through drinking, inhalation, and dermal contact during regular indoor activit...

The term “medicinal” as applied to a plant indicates that it contains a substance or substances which modulate beneficially the physiology of sick mammals. Thousands of species of higher plants have been used by man for that purpose. Modern techniques have revealed the enormous variety and complexity of so-called secondary plant chemicals, i.e., those which do not occur in all species, but whic...

The term “medicinal” as applied to a plant indicates that it contains a substance or substances which modulate beneficially the physiology of sick mammals. Thousands of species of higher plants have been used by man for that purpose. Modern techniques have revealed the enormous variety and complexity of so-called secondary plant chemicals, i.e., those which do not occur in all species, but whic...