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.

Renewable energy, urbanization, and ecological footprint in the Middle East and North Africa region

Abstract: The countries in the Middle East and North Africa (MENA) region have the greatest potential for renewable energy consumption in the world and is likely to be the most vulnerable to the horrendous effects of climate change. Unfortunately, only a few of the countries have tapped into this potential, as non-renewable energy still dominates the total energy mix of these countries. This study explores the effect of renewable and non-renewable energy consumption on the environment in MENA countries from 1990 to 2016 by applying the Augmented Mean Group algorithm while accounting for urbanization, financial development, and economic growth. The panel result suggests that financial development, economic growth, and urbanization add to environmental degradation. Also, findings reveal that renewable energy does not contribute meaningfully to environmental quality, while non-renewable energy consumption significantly adds to environmental degradation. A uni-directional causality flows from urbanization, economic growth, and energy use to environmental degradation. One way to abate this damage is for countries in this region to embrace and promote the consumption of clean energy sources.

Preliminary studies of the antifungal activities of some medicinal plants against Basidiobolus and some other pathogenic fungi.

Abstract: Summary. The antifungal activities of extracts of 10 medicinal plants collected from south-eastern parts of Nigeria were tested against seven pathogenic fungi using the broth dilution and agar plate methods. All the extracts at 1:10 dilution inhibited the growth of Basidiobolus haptosporus and B. ranarum but did not inhibit that of Aspergillus fumigatus, Geotrichum candidum and Candida albicans. While extracts from Piper guineense, Ocimum gratissimum, Moringa oleifera and Erythrophleum suaveolens inhibited the growth of Trichophyton rubrum and T. mentagrophyies, those from Jatropha curcas, Mitraccrpus villosus. Azadirachta indica and Gongronema latifolium failed to do so at 1.10 dilution. Extract from Piper sp. was also able to inhibit the growth of B. haptosporus at a concentration as low as 1:80 dilution followed by those of Ocimum and Rauvolfia spp. at 1:40 dilution. These results indicate possible use of certain plant extracts in the treatment of subcutaneous phycomycosis in humans and animals. Zusammenfassung. Die antimyzetische Aktivitat von zehn offizinellen Pflanzen, in den sudostlichen Landesteilen von Nigeria gesammelt, gegen sieben pathogene Pilze wurde im Dilutionstest und im Agardifusionstest untersucht. Samtliche Pflanzenextrakte hemmten in der Verdunnung 1:10 das Wachstum von Basidiobolus haptosporus und B. ranarum, nicht jedoch das Wachstum von Aspergillus fumigatus, Geotrichum candidum und Candida albicans. Extrakte von Piper guineense, Ocimum gratissimum, Moringa oleifera und Erythrophleum suaveolens hemmten in der Verdunnung 1:10 das Wachstum von Trichophyton rubrum und T. mentagrophytes. Extrakte von Jatropha curcas, Mitracarpus villosus, Azadirachta indica und Gongronema latifolium zeigten keine Hemmwirkung auf diese Pilze. Der Extrakt von Piper sp. hemmte noch in der Verdunnung von 1:80 das Wachstum von B. haptosporus. der von Ocimum und Rauvolfia spp. noch bei einer Verdunnung von 1:40. Diese Ergebnisse weisen auf die Moglichkeit hin, gewisse Pflanzenextrakte zur Behandlung subkutaner Zygomykosen bei Mensch und Tier einzusetzen.