The author discusses the validity of the claim that, in Antiquity, effective contraceptives and abortifacients were available, were widely used, and their use was responsible for the decline of population in certain periods. After reviewing the maneuvers and drugs used for those purposes, the author concludes that ancient physicians did not have at their disposal effective contraceptives and ab...

Problems relating to disposal of sludge accumulating at waste-water treatment plants (WWTP) in Croatia are described in the paper. The possibility and adequacy of using ash obtained through incineration of sludge is considered. A special emphasis is placed on the significance of ash in concrete industry during production of cement mortar and concrete. Results of worldwide research conducted so ...

This paper focuses on the problem about how to efficiently process the emergency of rail transit and guarantee the lowest accident loss in a short period of time, which is the urban rail transit management policy that makers are faced with, and which develops a high integrated system with strong information based on contingency plans to give the decision aid of urban rail transit emergency even...

health care wastes, which produce in most hospitals, laboratories and clinics, causes spread of dangerous and contagious diseases and are a serious threat to human health and the environment due to contamination and the losses caused by the lack of health care waste management. now days there are 4 common technologies for the disposal of hospital waste which is taken into consideration by the m...

The environmental impacts of five waste management scenarios for polylactic acid (PLA)-based bioplastics and food were quantified using life cycle assessment. Laboratory experiments have demonstrated the potential a pretreatment process to accelerate degradation modeled in two assessed. analyzed this study were: (1a) Anaerobic digestion (1b) with pretreatment; (2a) Compost; Compost (3) Landfill...

The development of efficient methods o re and garbage disposal have not kept pace ^e perfection of sewage disposal processes commonly adopted throughout the world. most common methods of refuse and Sar disposal are dumping on land or at sea, ee to hogs, incineration, and reduction. Methods include the pulverizing of J machinery prior to sale as fertilizer ( P > *931) and the Beccari system of f...

Insulin-dependent diabetic patients are not educated on safe sharps disposal methods, so leading to unsafe disposal of needles. Appropriate education on the correct disposal of sharps should be an integral part of their diabetic counseling. Doctors, nurses and pharmacists should all take responsibility for educating and reinforcing information about correct sharps disposal methods. Patients sho...