Sentence examples for has been conducted since from inspiring English sources

A 1987 study of 370,000 people found that 30,000 had solid evidence of long-term injury, whether lung damage or neurological problems, but no study has been conducted since.

Although in 2002 the NRC's Committee on Toxicants and Pathogens in Biosolids Applied to Land recommended studying human exposure and illness, little research into the experiences of persons living near such sites has been conducted since then (NRC 2002).

The trial described in this article has been conducted since 2003 in the Nouna Health District, a region located in north-western Burkina Faso about 300 km from the capital Ouagadougou [ 19].

The previous record from the Wall Street campaign, which has been conducted since the mid-1980's, was the $229,716.01 given in 2000-01.

"Keeping track of government property may seem like housekeeping to some, but when it comes to guns and computers with sensitive information, it's critical to public safety, national security and the credibility of the ATF". A regular audit of weapons and other sensitive items has been conducted since a study in 2001 revealed that the FBI and other agencies had misplaced hundreds of firearms.

This report describes the first major evaluation of the Azerbaijan NIP that has been conducted since Azerbaijan declared independence in 1991.

However, no detailed study has been conducted since 1906.

The first multi-indicator ranking of global universities, the ARWU has been conducted since 2003.

As joints are considered regions of weakness, their study has been conducted since late 1930s.

Study design: Statewide laboratory surveillance for invasive Hib disease has been conducted since 1980.

The Panel Study has been conducted since 1968 at the University of Michigan Institute for Social Research.