International Journals of Multidisciplinary
Research Academy (IJMRA)

Abstract:
Gold nanoparticles were synthesized using the cost-effective, eco-friendly green synthesis method. In the process, tetrachloroauric acid was used as a precursor and extract from flower leaves of the Hibiscus Tiliaceus plant was used as a reducing agent. Different concentrations of glucose were mixed with the synthesized gold nanoparticles and their effects were investigated. UV-Vis spectrometer was used to record the absorption spectra of the samples. Transmission electron microscopy (TEM) analysis was performed to determine the size and shape of the nanoparticles. The results showed that there is a linear relationship between the glucose concentration and the surface plasmon resonance absorption peak. This relationship occurred in the glucose concentration range of 1-15mM. The ability of this system to detect glucose in complex biological solutions was also investigated, and the results showed that it was still able to effectively detect glucose in the concentration range of 1-15mM.
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Abstract:
Our era is marked by rapid changes in technologies to which the academic cannot remain insensitive. Several countries have undertaken or continued to implement higher education reforms with a view to eliminating identified shortcomings, improving the relevance and quality of teaching and research, and strengthening the capacity of institutions in to benefit from the opportunities offered by the rapid evolution of new information and communication technologies (ICT or ICT) and regional and international cooperation (UNESCO, 2003).
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Abstract:
Unique crustal evolution history has created the Chinese characteristics metallogenic geological event and important metallogenic belts. A large number of regional mineralization law research’s and National Assessment of mineral resource potential, have established rich geological and geophysical geochemical prospecting models of typical deposits. Use metallogenic essential factors as an analysis unit, the paper has statisticsed the distribution and allocation data of stratigraphic age, mineral reserves, ore-bearing rock, wall rock alteration, mineralization age, genetic type, geochemical anomaly element combinations of 1310 gold, silver, copper, molybdenum, lead, zinc, tungsten, tin, antimony, mercury, rare earth, chromium, nickel, vanadium deposits in China. The results shows, limestone, dolomite, sandstone, gneiss, siltstone, amphibolite rock, slate, marble and tuff constitute the most important host rocks for gold silver and polymetallic mineralization;
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Abstract:
The study investigated the influence of field trip in teaching and learning of biology in Enugu East LGA of Enugu state, Nigeria. Three research questions guided the study. Survey design was used for the study. The sample size was one hundred (100) senior secondary school II (SS2) students. The instrument used for data collection was questionnaire made up of 15 items. The instrument was validated by three experts. The reliability coefficient of 0.79 was obtained for the instruments using crombach alpha. The findings revealed that teachers use field trip once a year and that some teachers do not use it all in teaching and learning of biology. The findings also revealed among others that field trip is an effective method of teaching since it helps students acquire useful knowledge while having fun and relaxation at the same time. The researcher recommended that extensive field trip should be organized by schools so as to expose the students to events outside the classroom
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Abstract:
Our global environment facing highly critical situation due to rapid industrialization excessive agriculture,
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Abstract:
Electrodeposition of Zn-Co alloy from an acid sulphate bath has been carried out. The effects of metal ion ratio in the bath,
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