I am a student from Korea who apply for the chemistry PhD course in US.<br /><br />As I am not a native in US,<br /><br />1. please convert expressions that would be seen inappropriate for natives<br /><br />2. as I am not used to use punctuation marks properly, please correct them if their uses are not proper<br /><br />3. please convert words that is casual or not formal to the formal one<br /><br />Thank you.<br /><br />