Ultrafine particles (UFPs; diameter less than 100 nm) are ubiquitous in urban air, and an
acknowledged risk to human health. Globally, the major source for urban outdoor UFP …

Although humans have been exposed to airborne nanosized particles (NSPs;< 100 nm)
throughout their evolutionary stages, such exposure has increased dramatically over the last …

The recent advances in nanotechnology and the corresponding increase in the use of
nanomaterials in products in every sector of society have resulted in uncertainties regarding …

Developments in nanotechnology are leading to a rapid proliferation of new materials that
are likely to become a source of engineered nanoparticles (ENPs) to the environment …

Over the past decade, the formation and growth of nanometer-size atmospheric aerosol
particles have been observed at a number of sites around the world. Measurements of …

Nanotechnology is a major innovative scientific and economic growth area, which may
present a variety of hazards for environmental and human health. The surface properties …

Abstract The 1999 Regional Haze Rule provides a context for this review of visibility, the
science that describes it, and the use of that science in regulatory guidance. The scientific …

Motor vehicle emissions usually constitute the most significant source of ultrafine particles
(diameter< 0.1 μm) in an urban environment, yet little is known about the concentration and …

Numerous epidemiologic time-series studies have shown generally consistent associations
of cardiovascular hospital admissions and mortality with outdoor air pollution, particularly …

The diesel engine offers superior fuel and thermal efficiencies, greater power output,
superior torque and better durability compared to the spark ignition engine. On the other …