Management of dental waste in dental offices and clinics in Jeddah, Saudi Arabia.

Management of dental wastes became a recent challenge facing health care practitioners and is one of the highly-sensitive environmental problems. The main purpose of this study was to assess oral health care provider's knowledge and behavior about dental waste management and evaluate their behavior toward it. A cross-sectional descriptive study was conducted on 314 dental health care providers working in four dental colleges, and 20 private dental clinics in Jeddah, Saudi Arabia.

Environmental risk factors and the associated morbidity in a periurban area, Alexandria, Egypt.

Background: According to the WHO, nearly 24% of the global disease burden is attributable to environmental risk factors (RFs). People living in periurban areas are particularly at risk due to lack of basic sanitation requirements.

Objective: To investigate the possible association between environmental RFs and disease prevalence for a community living in a periurban area in Alexandria, Egypt.

Environmental engineering interventions to control the expansion of salty lakes and marshes in siwa oasis.

Background: The main activity in Siwa Oasis society is the agriculture, it depends on the groundwater. The agricultural drainage water and the unused saline water of naturally flowing springs are poured into four main salty lakes. This leads to an increase in the surface area of the saltwater lakes, marshes and rise in water table levels.

Development of low-cost technology for the removal of iron and manganese from ground water in siwa oasis.

Background: Ground water is the only water resource for Siwa Oasis. It is obtained from natural freshwater wells and springs fed by the Nubian aquifer. Water samples collected from Siwa Oasis had relatively higher iron (Fe) and manganese (Mn) than the permissible limits specified in WHO Guidelines and Egyptian Standards for drinking water quality.

Environmental education and its effect on the knowledge and attitudes of preparatory school students.

Considering the serious environmental threats facing Egypt, environmental education (EE) that provides the knowledge, skills, and motivation to take individual or collective action is needed to create a sustainable quality of life. This study was carried out aiming at measuring the level of environmental knowledge among preparatory school students in Alexandria, determining their attitudes towards some environmental concepts, and assessing the effect of EE on these knowledge and attitudes. The study sample was selected by stratified random method, and the assessment was conducted using a questionnaire.