Head restraints are designed to restrict head movement during a rear-impact collision and reduce the chance of neck and shoulder injury. They're an important (though often overlooked) safety feature that has been federally mandated in front seating positions since 1969. Head restraints are used to reduce whiplash during collision.[7] Whiplash sprains and/or strains occur in 28-53% of motor vehicle collision victims, making it the most common type of injury in these collisions. The costs annually
the water presence in the pavement. Due to the improper maintenance and limited fund causes deterioration of pavements. Various problems on the roads have been frequently observed on flexible pavements like: potholes, rutting, shoving etc. Literature review lighten up on solution of these problems by modification of bitumen. To lighten this process, several measures may be effective, such as, use of better quality materials like waste plastic, motor oil, crumb rubber. The grade of bitumen produced
THE EXPLORATORY STUDY OF PHYSICAL AND CHEMICAL PROPERTIES OF RAINWATER IN THE THREE SELECTED BARANGAYS OF MARIKINA CITY By: Francis Eisen C. Bagsic Review of Related Literature Rain acts as a powerful mechanism to remove pollutants from the atmosphere.. Precipitation is any product of the condensation of atmospheric water vapor that falls under gravity. Rainwater composition is important in evaluating the role of transport of soluble material and the contribution of different sources
(Sheftel, 2000; OECD, 2004). In general, the plastic family encompasses a plethora of polymeric materials including polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyethylene terepthalate (PET), nylon, polyvinyl alcohol (PVA) and acrylonitrile butadiene styrene (ABS). Among them, it has been reported that polyethylene, polypropylene and polystyrene have the highest production volumes and consist the main plastic components of marine debris (Rios et al., 2007; Sudhakar
Rhizobium melilotihelped to degradePE. Recent study, Uyigue et al., (2012) proved that ordinary salt was not effective in degradation of polypropylene. The degradation of polypropylene in sea water depends on the physical, chemical, biological of sea water, the thickness of polypropylene and its starch
2: Three- body abrasive CHAPTER SCHEMATA Chapter 1: Introduction chapter discuss about the advanced polymer composites, its characteristics and classification. Detail on Fibers- Basalt, Glass fibers and wear behaviour. Chapter 2: Includes a literature review designed to provide a summary of the base of knowledge already available involving the issues of interest. It presents the research works on Natural fibers especially basalt fibers by various investigators and also its hybrid effect and compatibility