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FUTOSpace is the Federal University of Technology, Owerri open-access repository that collects, preserves and make available in digital format the intellectual output of the university's community:
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- This community features books, book chapters and books published by faculty members in the university
- This Community features the proceedings of conferences, seminars and workshops hosted by the FUTO or other bodies but had staff from FUTO attending and making presentations
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- A community of series of scholarly public lectures designed to commemorate a faculty member's appointment to a professorship
- Scholarly resources with relevant discussion points for use by faculty as teaching lectures, student reading content, and study guides
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- Published Research Outputs
- Theses and dissertations by students and staff from all the Schools in FUTO
Recent Submissions
Synthesis, characterization and complexation of Sc (III) Ion using chloroquine diphosphate drug
(U. P., 2019-01) Otuokere, I. E.; Okpara, L. O.; Amadi, K. C.; Ikpo, N.; Okafor, G. U.; Nwadire, F. C.; Olisa, C. O.
Chloroquine possess lone pairs of electrons that can be donated to central metal ion. Scandium (III) complex of chloroquine was synthesized by reaction of chloroquine diphosphate with scandium (III) oxide. The metal complex was characterized based on melting point, UV, IR, and 1H NMR Spectroscopy. 1H NMR Spectra of the complex further showed the involvement of the amine group in coordination to the metal complex. The IR spectra of the complex showed the involvement of amine and imine group in coordination to the metal. The electronic spectrum of the complex suggested intraligand charge transfer (ILCT), ligand to metal charge transfer (LMCT), and d-d transition. The melting point of the complex was higher than the free ligand. Spectroscopic studies showed that chloroquine acted as a bidentate ligand. These results showed that chloroquine has the ability to sequestrate Sc (III) ion from solution. We recommend the use of chloroquine in scandium extraction and chelation therapy.
Techniques in performance improvment of mobile wireless communication systems-A review
(Progressive Academic Publishing, UK, 2015) Agubor, C. K.; Nosiri, O. C.; Ononiwu, G. C.; Atimati, E. E.; Onyishi, D. U.
Mobile wireless communication providers are expected by their numerous subscribers to provide network that can allow higher data rates, and good voice quality. However, this may be restricted due to some technical problems such as limited availability of radio frequency spectrum, bandwidth, channel capacity, geographical areas and transmission problems caused
by various factors like fading and multipath distortion. All these lead to overall system performance degradation. This has led to various studies on how improvement on the performance of wireless communication can be realized using different techniques. This paper is a review of some scholarly works on this subject. To achieve this some recent scholarly articles were accessed online and their findings were highlighted. It was observed that all the articles reviewed had results drawn only from theoretical analysis. Based on this, one of the recommendations is that theoretical analysis should be supported with data obtained from carrying out RF measurements in the field where possible
Phenol utilization and toxicity of ternary mixtures of phenol, zinc and cadmium to fungal species isolated from hydrocarbon impacted soil
(Federal University of Technology, Owerri, 2018-11) Nlemolisa, Oluchi Rose Collette
The present study was carried out to determine phenol utilization and toxicity of ternary mixtures of zinc, cadmium and phenol to fungal species isolated from hydrocarbon impacted soil. The yeasts isolated from the hydrocarbon impacted soil were identified as Saprochaete sp. and Cryptococcus sp. The biodegradation phenol potential of Saprochaete sp. and Cryptococcus sp. was studied using mineral salt broth supplemented with phenol with concentration ranging from 0-1000 mg/l. Investigation shows that the yeasts were able to utilize almost all the introduced quantity (1000 mg/l) of phenol as sole source of carbon and energy within a period of 3 to14 days. The toxicity was determined based on the inhibition of dehydrogenase activity of Saprochaete sp. and Cryptococcus sp. The toxicity of chemicals and their mixtures was evaluated in the concentration range of 0-16 mM for phenol, 0-5 mM for zinc and 0-0.4 mM for cadmium. The binary and ternary mixture ratios were evaluated. The toxicity thresholds (IC50) were estimated using 3-parameter logistic dose-response model. The IC50 shows that cadmium has the highest toxic effect on the yeasts with IC50 value of 0.075 mM for Saprochaete sp. and 0.09 mM for Cryptococcus sp. The binary and ternary toxicity of the mixtures on the enzyme activity of the yeasts was evaluated with toxic index (TI) model. Modulation of the toxic interactions by the components of the mixtures through synergistic, additive and antagonistic interactions on the heavy metals and phenol were possible against the dehydrogenase activity of the phenol-utilizing yeasts. However the toxic effects of phenol and heavy metals would depend on their relative amount present in the environment.
A survey on the availability of TV white spaces in Eastern Nigeria
(U. P., 2015) Atimati, E. E.; Ezema, L. S.; Ezeh, G. N.; Iwuchukwu, U. C.; Agubor, C. K.
Effective utilization of future wireless communication systems such as the TV White spaces depend largely on the availability of free unused spectrum within the 470 – 860MHz UHF band. The paper, analyses the effectiveness of TV White space for last mile delivery of broadband based on spectral availability. The survey was carried out on a spectral range of 470 – 870MHz within the study area, using a RF spectrum analyser and the readings were presented using graph plots through the aid of Touchstone PC spectrum analyser. Fixed
measurement was adopted and two (2) sites were chosen to take measurement. The results revealed that, 64% of the 50 channels surveyed were dormant. The degree of occupancy was found to be very low, thus providing for unused spectra spaces within the UHF frequency band which can be used to provide broadband services in sparsely populated rural areas; where data rate could be compromised for range at zero or low cost for acquiring operating spectral license
Preliminary study of the potential industrial applications of micro algae (Oscillotoria sp.) oil
(U. P., 2017) Chinweuba, A. J.; Alisa, C. O.; Okoye, U. G.
Extraction and characterisation of micro algae (Oscillotoria sp) were done to assay the possible industrial applications of the oil. An open pond system was used to culture the microalgae prior to the oil extraction. Solvent extraction method using n-hexane was used to extract the oil from the algae biomass. The physical and chemical properties of the oil were determined and the results obtained showed that the percentage oil yield was 28. Saponification value of 123mgKOH, iodine value 95g/100g, free fatty acid value of 3.79mg/g and peroxide value of 3.20meq/kg were also obtained. These values showed that Oscillotoria sp oil could be used industrially for the production of alkyd resins, paint polish and body cream.