1 in the model, write 1 next to it, etc.

1 in the model, write 1 next to it, etc. Eff ects of H2O on structure of acid-catalysed SiO2 sol-gel fi lms Experimental procedure Equal volumes of tetraethylorthosilicate (TEOS) and ethanol were mixed and stirred vigorously for 10 min at room temperature. 1 PROVIDE A GENERAL INTRODUCTION AND OVERVIEW OF THE MATERIALS/METHODS RESTATE THE PURPOSE OF THE WORK GIVE THE SOURCE OF MATERIALS/EQUIPMENT USED SUPPLY ESSENTIAL BACKGROUND INFORMATION 2 PROVIDE SPECIFIC AND PRECISE DETAILS ABOUT MATERIALS AND METHODS (i.e. quantities, temperatures, duration, sequence, conditions, locations, sizes) JUSTIFY CHOICES MADE INDICATE THAT APPROPRIATE CARE WAS TAKEN 3 RELATE MATERIALS/METHODS TO OTHER STUDIES 4 INDICATE WHERE PROBLEMS OCCURRED