Translation and validation of the Korean Version of the Reflux Symptom Score.

Objectives: To assess the validity and reliability of the Korean version of the reflux symptom score (K-RSS).

Materials And Methods: The English version of the RSS was translated into Korean and completed by 77 people (44 and 33 people in the patient group and control group, respectively). They completed the K-RSS (K-RSS-1) and reflux symptom index (RSI) questionnaires and answered questions about age, sex, underlying disease, smoking history, and alcohol and coffee consumption.

Identification of Headspace Volatile Compounds of Blended Coffee and Application to Principal Component Analysis.

Coffee can be blended to create a variety of products to meet consumer's needs. In order to uncover the blending effect of coffee beans, we performed an experiment using principal component analysis (PCA). Twelve varieties of green beans were tested in 11 experimental groups, and the volatile compounds of the beans were analyzed.