The phrase "an study" is not correct in written English.
The correct article to use before "study" is "a" because "study" begins with a consonant sound.
Example: "I am conducting a study on climate change."
Alternatives: "a study" or "one study".
He published an study in 2011 that identified for the first time the proportion of cancers that were due to 14 different factors.
Investigative journalist Jacques Pauw's The President's Keepers is an study of what he calls "the people who have brought our country to the brink of a mafia state".
This paper presents an study on the rupture strain of cylindrical fiber-reinforced polymer (FRP) jackets under internal ice pressure.
The day after Mr. Bush left, Mr. Cornyn sent an e-mail message to aides saying that Mr. Bush had pointed him toward an study that rebutted Mr. Kirk's assertion that the Bush tax cut had contributed to the deficit.
Similarly, an study in rhesus macaques by Dennison et al. showed that antibodies that recognized the 2F5 neutralizing core epitope (664DKW666), with a preferential binding for the gp41 fusion intermediate, lacked neutralizing activity62.
In this paper we present an study of space charge in this material and its conductive properties by dynamic electrical analysis, using the electric modulus formalism.
