A Comparative Study Between the Individual, Dual and Triple Addition of (S.F.), (T.G.P.) and (P.V.A.) for Improving Local Gypsum (Juss) Properties
In this research, an attempt has been made to implement a comparative study concerning the effect of three additives (namely; S.F., T.G.P. and P.V.A.) on two essential properties of the local gypsum (Juss) which are (Compressive Strength and Setting Time) for the purpose of improving both of them (together).
[Objective] To get hold of current status of EPI plan vaccine inoculation work before and after the earthquake in Anxian County,and discover the existed problems for EPI work. [Methods] The capacity proportion probability sampling method (PPS) was conducted to sample,and the results were put into SPSS software to carry on statistics analysis,finally Excel software was used to make takes. [Results] The BCG vaccine,the DPT foundation immunity qualified vaccination coverage as well as MV strengthened immunity qualified vaccination coverage showed different among years; In 2008,the foundation immunity qualified vaccination coverage and strengthened immunity qualified vaccination coverage showed significant difference. [Conclusion] The county-wide EPI work movement is normal. In 2008,strengthened immunity work was more influenced by the earthquake than the foundation immunity.