Acne is a disease of the skin that often occurs during adolescence until adulthood. Acne is characterized by the appearance of several signs, namely blackheads, pustules, papules, cysts and nodes in the neck, face, upper arms, back and chest area. Acne is also a skin disease that affects more than 85% of adolescents around the world. Although not life-threatening, acne can affect a person's quality of life by giving a psychological effect that is bad for the sufferer in the form of a person's way of judging, responding to and looking at his condition and situation. The purpose of this study was to determine the inhibitory power of citronella extract (Cymbopogon nardus) on the growth of Propionibacterium acnes bacteria. The study was conducted with experimental methods with the posttest design only group design controls conducted at the Microbiology Lab at the Faculty of Medicine, University of Prima Indonesia and the Pharmacy and Toxicology Lab at the Faculty of Pharmacy, University of North Sumatra. The results showed that lemongrass leaf extract had a inhibitory effect on the growth of Propionibacterium acnes bacteria with various concentrations of 20, 40, 60, 80 and 100%. The higher the concentration of fragrant lemongrass extract, the better the inhibition power.

Nursing as a service area, is very labor-intensive, making nursing management particularly challenging due to the diverse experiences and educational backgrounds of employees in health care settings. Types of work, as well as workers, challenge nursing managers to create the type of environment that facilitates quality nursing practice. The nurse manager has specific responsibilities for the hospital and the staff. Staffs, in turn, have responsibilities towards both the organization and the manager. The purpose of this study was to analyze the effect of nurses’ performance using the Analytic Hierarchy Process (AHP) method and the Rating Scale method at the Royal Prima Hospital, Medan. This research is a descriptive-analytic study. The study was conducted from April to August 2020 at the Royal Prima Hospital Medan. The number of samples is 50 people. The results showed that there was a significant relationship between the performance of nurses using the Analytic Hierarchy Process (AHP) method and the Rating Scale at the Royal Prima Hospital Medan in 2020. The results of the multivariate test can be seen that the Analytic Hierarchy Process (AHP) method is the most influential. is a quantity. In the Rating Scale method, the most influential is quality. It is hoped that prioritization can be made to conduct a performance review to identify existing weaknesses so that improvements can be made continuously continuous for all services. Keywords: Royal Prima Hospital; Nurse Performance; AHP; Rating Scale Method;