The work focuses on assessing the Marshall properties of High Density Polypropylene (HDPP) waste and its potentiality to mitigate pavement failures due to environmental and traffic loading. Based on design, 4.5, 5.0, 5.5, 6.0 and 6.5% bitumen contents were arbitrarily selected to prepare one hundred and five (105) Marshall specimens having respectively 0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0% HDPP waste in Polymer Modified (PM) asphalt concrete. The specimens were tested for stability, flow, compacted density of the mix (CDM) and void analysis. Optimum parameter for Marshall properties obtained are 27.68kN, 2.54mm, 2.45g/cm3, 3.39%, 16.2% and 74.10% respectively for stability, flow, CDM, VIM, VMA and VFB. The results revealed enhanced engineering properties of 2% HDPP at an optimal bitumen content of 5.5% and could satisfy strength and durability requirements of heavy traffic situation.http://dx.doi.org/10.4314/njt.v36i3.3

Introduction: Nosocomial surgical site infections remain a key drawback in health care facilities, resulting in extended length of stay, significant morbidity and mortality, elevated excess of cost, and less regular basis of death in the surgical patient. Aim: The objective of the study is to determine the rate of occurrence of surgical site nosocomial infections in surgical patients in Specialist Hospital Sokoto, Nigeria. ) was carried out in Specialist Hospital Sokoto, Nigeria. Methodology: Patients' folders and microbiology laboratory records were used for the determination of prevalence of nosocomial infections in. Data was analyzed using SPSS version 20. Results: Result of the retrospective study of surgical site infection in the hospital showed that surgical site nosocomial infections are frequent in the hospital, with a prevalence rate of 4.7% (2011/2012) and 7.6% (2012/2013). Conclusion: Despite the fact that this study is limited to nosocomial surgical site infections in three surgical wards only, surgical site infection exists as a major problem hospital. The results of this study are consistent with reports of similar studies in Nigeria and other parts of the world.

No abstract