Environmental

Recent Posts

Nanoparticles Impair Blood Vessel Function
Posted on 6 Apr 2012 by Thomas H. Clarke, Jr.

Prior posts have noted the wide range of materials and consumer products in which nanoparticles are used, and also that nanoparticles can cross the so-called blood-brain barrier. New research, using animal models, suggests that such materials may impair... Read More

Composition of diesel exhaust varies with engine loading, producing differential health impact characteristics from the emissions
Posted on 2 Aug 2011 by Thomas H. Clarke, Jr.

As noted in several prior posts, the study of the impact on diesel exhaust has focused on the PM10 and PM 2.5 profiles of the emissions. Recently, researchers argued that this view is too simplistic, and present an interesting study in support of their... Read More

Nanoparticles Impair Blood Vessel Function
Posted on 6 Apr 2012 by Thomas H. Clarke, Jr.

Prior posts have noted the wide range of materials and consumer products in which nanoparticles are used, and also that nanoparticles can cross the so-called blood-brain barrier. New research, using animal models, suggests that such materials may impair... Read More

In a smallish room, body heat draws particles near, enhancing inhalation
Posted on 23 Jun 2010 by Thomas H. Clarke, Jr.

Most models involving inhalation of particulates of various sorts (e.g., microbes, pollen, dust, toxins) assume a somewhat even distribution of the particulates in the air that is inhaled. While such an assumption helps to simplify exposure calculations... Read More

Composition of diesel exhaust varies with engine loading, producing differential health impact characteristics from the emissions
Posted on 2 Aug 2011 by Thomas H. Clarke, Jr.

As noted in several prior posts, the study of the impact on diesel exhaust has focused on the PM10 and PM 2.5 profiles of the emissions. Recently, researchers argued that this view is too simplistic, and present an interesting study in support of their... Read More

Inhaled particulates may inflame the brain and cause dementia-like harm in children
Posted on 16 May 2010 by Thomas H. Clarke, Jr.

Prior posts have noted the significant evidence that particulates, particularly PM 2.5, can cause inflammation of the lungs and blood vessels of the body. These posts have also noted that evidence had been found that very small particulates can travel... Read More

Foliage on trees might be useful as low-tech pollution sensors
Posted on 8 Mar 2010 by Thomas H. Clarke, Jr.

As noted in prior posts, significant lung damage has been associated with the PM2.5 particulates; they are a major health hazard. Additionally, diesel is a significant source of such particulates. Thus, researchers considered potential options for... Read More