The emergence of the coronavirus epidemic, as well as the subsequent worldwide recession, has piqued researchers’ and stakeholders’ interest in how oil price dynamics affect Nigeria’s exchange rate performance. This interest stems from the tremendous volatility of the period and the failure of many countries to cope with it, leading to the economic crisis of many, including Nigeria. The global supply of commodity products and services was disrupted by the Coronavirus, which caused major markets to crash, notably the crude oil market. Oil prices fell from $67.12 per barrel on 2 January 2020 to $12.22 on 22 April 2020, and then to $40.91 on 22 October 2020, during the mild stage of the epidemic. As a result of these occurrences, this study investigates the impact of oil price dynamism on the performance and exchange rate of the crude oil market. The impulse response function, variance decomposition, and granger causality were calculated using the Toda-Yamamoto model using monthly data from 2000m1 to 2020m6. The data show that the Nigerian stock market is predominantly controlled by macroeconomic global factors. Specifically, when the price of oil becomes erratic and unpredictable, investors prefer to have cash on hand rather than invest in the market at a risky time. The data show that oil price shock, rather than oil price fluctuation, has a significant impact on the exchange rate. Furthermore, the exchange rate reacts negatively to oil price shocks but favourably to volatility in oil prices. The granger causality result, on the other hand, reveals that the control of oil price volatility on the exchange rate is not significant..
Please see the link :- https://www.ikprress.org/index.php/JET/article/view/6415
Aim: To prepare silver nanoparticles from hing oil and to test their antimicrobial activity was the objective of the research.
Materials and Methods: In a conical flask 0.5 mL of hing oil was mixed with 99.5 mL of distilled water. To this, 0.0169 grams of silver nitrate was added and kept in an orbital shaker for the formation of nanoparticle. The colour change was noted visually and the absorbance was noted using UV -Vis spectroscopy. The final product was centrifuged and NPs were collected. The morphology was studied using TEM. The hing oil mediated silver nanoparticles were evaluated for its antimicrobial activity by agar well diffusion method using standard procedure. The antimicrobial activity was tested against S. aureus, S. mutans and Lactobacillus and Candida albicans.
Results and Discussion: The formation of silver nanoparticles at a peak of 420 nm was confirmed by UV-Vis spectroscopy. Spherical and rod-shaped nanoparticles with a size ranging from 10-55 nm were shown by TEM. The antibacterial and antifungal activity of the silver nanoparticles induced by the hing oil was comparable. With an increase in concentration, there was no difference in the inhibition region.
Conclusion: Silver nanoparticles mediated by Hing Oil may be a safer option for infections caused by bacteria like S. aureus, S. Although the zone of inhibition shown was similar in the different concentrations used in the analysis, mutans and Lactobacillus and fungi such as Candida albicans were similar. However, for their further pharmacological function, hing oil mediated green synthesis of silver nanoparticle was successful and can be further explored. For its other biomedical uses, Hing oil mediated silver nanoparticles can be assessed.
Please see the link :- https://www.ikprress.org/index.php/PCBMB/article/view/5342