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Polycrystalline compositions based on MgO, SO3 and B2O3 have both scientific and technological importance because of their useful applications. Doping with rare earth elements not only due to a rearrangement in the structure, but also to variation in the luminescence properties. Magnesium sulfide borate doped samarium oxide (MgSBO3:Sm3+) phosphors were prepared by solid state reaction and their structural and luminescence characteristic were studied and reported. IR and Raman spectral studies have been made to explore the presence of functional groups and various structural units in the prepared Polycrystalline. The formation of SO4, BO4, BO3, B-O-B and S-O-B structural units have been investigated. The emission and excitation properties were studied. And the results show that the emission and excitation spectra of these phosphors can be excited by ultraviolet (UV) 341, 370 and 409 nm light, and emit green, yellow and red light with intense peak at 601 nm, which are nicely in accordance with the widely applied near- UV LED chip. The emission intensities of these phosphors were increased with increases doping concentration. Therefore, these phosphors are the promising luminescent material towards white red LED applications.

The study investigates the knowledge of HIV/AIDS and the use of contraceptive among the students of Federal college of Education, Kontagora. The subject of study were randomly selected. Sample of 300 students were used for the study. The instruments use for the study was questionnaire validated and tested for reliability. Data collected were analyzed using Pearson Product Moment Correlation Coefficient and t-test as appropriate. The finding revealed that there was significant relationship between the student's knowledge and other sexual transmitted diseases. There was significant different between the student knowledge of HIV/AIDS and the use of condom as preventive devices. There was significant difference between student knowledge and other sexually transmitted diseases. There was significant difference between the student knowledge of mode of transmission of HIV/AIDS and other STDS among students of Federal college of Education, Kontagora. The student's knowledge of contraceptive had no significant relation to the knowledge of contraceptive device. Based on these findings the following recommendations were made. AID Education should be incorporated in the school curriculum; also adequate information on knowledge of HIV/AIDS should be made available to the students of Federal college of Education, Kontagora through technology and health education.