University of Nigeria, Nsukka

About: University of Nigeria, Nsukka is a education organization based out in Nsukka, Nigeria. It is known for research contribution in the topics: Population & Health care. The organization has 10211 authors who have published 13685 publications receiving 138922 citations.

Effects of tourism, financial development, and renewable energy on environmental performance in EU-28: does institutional quality matter?

Abstract: Institutional quality largely influences the ways in which economic agents align their production and operational behaviors towards expanding the share of renewable energy in the total energy mix and enhancing environmental performance. This study therefore explores the panel data for the EU-28 countries to assess the dynamic effects of institutional quality, tourism development, financial development, and renewable energy on environmental performance over the period 2002 to 2014. Using a two-step dynamic system generalized method of moments (GMM), the empirical results broadly suggest that institutional quality can be explored to dampen the potential negative effects of tourism and economic growth on environmental performance. In addition, financial development and renewable energy are positively related to environmental performance. This suggests that financial stability and energy consumption transition to renewable energy are necessary requirements to improve environmental performance. The policy implication for this study is that strengthening of institutional quality, financial stability, and adjusting to alternative and clean energy systems are the surest ways to achieve a cleaner and sustainable environment in the EU region.

Experimental evidence for the antidiabetic activity of Cajanus cajan leaves in rats

Abstract: The antidiabetic activity of methanol leaves extract of Cajanus cajan (L.) Millsp. (Fabaceae) was studied in alloxan-diabetic and in oral glucose loaded rats. The acute toxicity and lethality (LD50) and the phytochemical analysis of the extract were also evaluated. The results showed that the extract (400 and 600 mg/kg) significantly (P<0.05) reduced fasting blood sugar of alloxan diabetic rats in a dose-related manner, with maximum hypoglycemic effect at 4 - 6 h. The extract (400 and 600 mg/kg) also significantly (P<0.05) suppressed the peak postprandial rise in blood glucose of normal rats by 101.8 and 57.40% respectively. Acute toxicity and lethality test of the extract in rats gave an oral LD50 greater than 5 g/kg. The findings indicate that the leaves of C. cajan may be beneficial as an antidiabetic therapy.

Distribution of palynomorphs in marine sediments: A record for seasonal wind patterns over NW Africa and adjacent Atlantic

Abstract: The climatic gradient in NW Africa is reflected in the vegetation by a series of distinct vegetation zones. Pollen and spores from this area are transported to the Atlantic mainly by the trades and the African Easterly Jet (Saharan Air Layer). Seven pollen assemblages have been defined in recent surface sediments from the eastern Atlantic offshore NW Africa, and their distribution in the marine sediments can be explained by their provenance, the timing of pollen release and pollen transport, and the major transport systems (winds) effective at that moment of the year. In this way the distribution of selected assemblages and taxa trace the positioning of the major wind belts.