This white paper lays out some foundational information about different approaches to safety: how various industries differ in their approaches to safety engineering, and a comparison of three general approaches to safety (system safety, industrial safety engineering, and reliability engineering). An attempt is made to lay out the properties of industries and systems that make one approach more...

Jonathan D. Glass, M.D., is leading a clinical trial testing the safety of using adult stem cells to treat patients with amyotrophic lateral sclerosis (ALS), a neurodegenerative disease that remains untreatable. This trial, along with others like it, is just the beginning of a time-intensive process necessary to determine whether stem-cell treatments are safe and effective, meaning that the ben...

This paper presents design of a climbing robot for inspection of glass curtain walls. The double-chamber structure enables the robot to climb over grooves on the glasses. In order to reduce the weight, both number and shape of the chambers are specially considered, and the pressure structure is optimized by FEA method. The statics models of different adsorption situations are also analyzed and ...

Controversy exists regarding the general safety of resin sealants and in particular their use in children, due to the possible leaching of non-polymerized monomers including bisphenol A. A thermally cured high-viscosity glass-ionomer cement (GIC) is suggested as a first-choice sealant material. An innovative approach of thermo-curing the GIC during placement is presented. The step-by-step clini...

Glass is widely used for the manufacture of facades and interior glazing buildings. structures are subject to high fire safety requirements. Two methods employed in this work: experimental studies small-sized large-sized samples simulations heating glass structures. The results showed that monolithic tempered glass, with dimensions 4250 × 2000 8 mm 3000 8, were inserted a steel frame, if proper...

Safety case development is not a post-development activity, rather it should occur throughout the system development lifecycle. The key components in a safety case are safety arguments. Too often, safety arguments are constructed without proper reasoning. Inappropriate reasoning in safety arguments could undermine a system’s safety claims, which in turn contributes to safety-related failures of...

Protective clothing performs a vital role in maintaining the safety of human in workplace. The developments in this field are proceeding to fulfill the needs with multifunctional materials at competitive costs. Recently, the protective clothing field introduces the usage of composite materials taking advantage of their outstanding properties. In this paper, the multifunctional performance of hy...

The aim of this report is to extend understanding and capability for linking atomistic understanding of glass corrosion mechanisms to continuum models of reaction and transport in the subsurface environment. The focus of this report is on aluminosilicate glass dissolution supported by studies on natural aluminosilicate minerals which exhibit similar corrosion properties. The ultimate objectives...

Wetterhahn knew about the high toxicity of dimethylmercury and took very reasonable precautions, donning safety glasses and latex gloves, doing manipulations in a fume cupboard and only working with very small quantities behind the fume cupboard sash. Dimethylmercury, supplied by a chemical manufacturer, came in a sealed glass vial. A colleague of hers cooled the vial in ice-water to reduce the...