BACKGROUND AND AIM: Various types of harmful wastes, which may or may not be contaminated with body fluids, result from health care services. When dental clinics are improperly managed, various environmentally hazardous wastes emerge. This study aims to determine and compare the knowledge levels of academic and dental health personnels and dentistry students an...

Forest ecosystems where periodical tree bark harvesting is a major economic activity may be particularly vulnerable to disturbances such as fire, since debarking usually reduces tree vigour and protection against external agents. In this paper we asked how cork oak Quercus suber trees respond after wildfires and, in particular, how bark harvesting affects post-fire tree survival and resprouting...

The ‘throwaway society’ thesis – invariably attributed to Vance Packard (1967) – is widespread in social commentary on post-war social change.It represents, simultaneously, a sociological analysis and a moral critique of recent social development. In this art icle I take a brief look at the core of the ‘throwaway society’ thesis and make some comment on its modern origins before p resenting and...

 Post larvae of wild and cultured spawners of the Indian white shrimp (Penaeus indicus, Milne Edwards, 1837) were reared to market size, in commercial ponds of shrimp farming site of Helleh, in Bushehr Province, during a six months period. Environmental factors, management process and the diet used to feed shrimps were almost similar for both treatments. Averages of the weight, length, specific...

US transportation agencies have been increasingly using recycled asphalt shingles (RAS) in hot mix asphalt (HMA) applications over the last 25 years. Initial use of RAS started with recycled post-manufacturers shingles, but now agencies are showing a growing interest in using post-consumer (tear-off) RAS in asphalt applications. Post-consumer asphalt shingles typically have 20 to 30 percent asp...

Food waste is problematic on a number of levels; including the loss of a potentially valuable food source or resource for use in other processes; wasted resources and emissions in the food supply chain; and problems associated with the disposal of organic waste to landfill. We quantify the post-consumer food waste stream in South Africa, in order to bring attention to the magnitude of the probl...

The electronic waste also known as e-waste is a dangerous waste consisting of unwanted electronic and electrical equipment. Developing countries are facing the problem of e-waste management enormously which is either internally generated or are imported from other countries. India is also facing the problem of e-waste management due to lack of awareness among people about dangerous effect of ew...