Content Vol. 3 N 1, 2017
Pages 01 - 36
Pages 01 - 36
Abstract:
Artemisia herba-alba’s aerial parts essential oil was obtained by hydrodistillation and analyzed by GC and GC/MS. 36 components were identified accounting 99.81% of the total essential oil. Chrysanthenone (47.71%), α-pinene (4.31%), β-germacrene (3.15%) and β-elemene (2.86%%) were the major compounds.
The inhibitive effect of Artemisia herba-alba’s essential oil (AHAEO) on carbon steel corrosion in 1M HCl solution has been investigated by weight loss measurement, Electrochemical Impedance Spectroscopy (EIS) and Tafel polarization curves.
Inhibition was found to increase while the concentration of AHAEO increases. The effect of immersion time was also studied up to 12 h. Values of inhibition efficiency calculated from weight loss, Tafel polarization curves, and EIS are in good agreements. Polarization curves showed that Artemisia herba-alba essential oil behave as mixed type inhibitors in hydrochloric acid 1M. The results obtained showed that AHAEO could serve as an effective inhibitor of the corrosion of carbon steel in hydrochloric acid solution.
Inhibition was found to increase while the concentration of AHAEO increases. The effect of immersion time was also studied up to 12 h. Values of inhibition efficiency calculated from weight loss, Tafel polarization curves, and EIS are in good agreements. Polarization curves showed that Artemisia herba-alba essential oil behave as mixed type inhibitors in hydrochloric acid 1M. The results obtained showed that AHAEO could serve as an effective inhibitor of the corrosion of carbon steel in hydrochloric acid solution.
Key words:
Essential oil, Corrosion, Inhibition, Artemisia herba-alba, Carbon steel, 1 M HCl, Electrochemical techniques.
Federalism, the local government system and good governance in Nigeria; Sandy Ojang Onor; Inter. J. Acad. Stud.; 3(01)14-36
Abstract:
It has been argued by some scholars and justifiably so, that federalism is central to the very survival of Nigeria’s democracy because of the heterogeneous content of our nationhood. Put specifically, these scholars maintain that it is only federalism that allows states the liberty to maximize the use of their resources and grow at their different pace in a manner that is justifiable, fair and equitable. A corollary to this argument is the submission that only states can be federating units in a federation and to that extent, local governments can only exist as appendages of states. This paper seeks to argue that the local government system deserves to be an independent tier of government because the present state of poor development witnessed across local governments in the country is fundamentally, the direct result of the excessive control of local government affairs by their respective state governments, who amongst other things, divert local government funds and arrest development at this very critical level of governance. Nigeria deserves a federalism that responds to its own unique historical, political and socio-cultural experience in a manner that advances the yearnings and aspirations of all citizenry. To ape or adopt the concept of federalism without initiating adjustments where necessary to suit our purposes and advance the cause of good governance in the country, is at best illogical and at worst counter-productive.
This paper shall depend on oral interviews and extant literature in books and articles.
This paper shall depend on oral interviews and extant literature in books and articles.
Key words:
Federalism, Local Government system, Good governance, Democracy.