Water slides--are safety standards sliding?

Water slides--are safety standards sliding?

Pre-sliding Friction Dynamics in High Precision Machine Slides

High precision applications, such as, semiconductor manufacturing and diamond turning of optical elements require positioning accuracy within nanometers and therefore require very precise motion control of machine tool axes. The frictional behavior at the slides is a result of very complex interaction between the contacting surfaces and lubricants. No accurate quantitative prediction of the fri...

Are current playground safety standards adequate for preventing arm fractures?

OBJECTIVE To assess compliance with current standards of playgrounds where children have sustained a fall-related arm fracture. DESIGN, SETTING AND PARTICIPANTS Between October 2000 and December 2002, a consecutive prospective series of 402 children aged under 13 years who fell from playground equipment and sustained an arm fracture was identified by emergency department staff in five Victori...

What quality standards are appropriate for rural water supplies?

The paper by Welch et al. entitled " Microbial quality of water in rural communities of Trinidad " (1) discussed aspects of water quality testing and expectations of safety of rural water supplies, and it affirmed similar observations of unpotability in developing countries that my colleagues and I described in a study in sub-Saharan Africa (2). The hazard of increased contamination of stored w...

Herbal drug leaflets: are they in compliance with standards?

Leaflets inside pharmaceutical packages should include focal points about medicines being used by patients. The current study was designed to assess the compliance of information cited in herbal medicine leaflets with the standards released by the Ministry of Health and Medical Education of Iran (MHMEI). Leaflets of commonly used herbal pharmaceutical products sold in pharmacies of Iran were co...