Salah satu penyebab infeksi adalah bakteri, seperti Staphylococcus aureus. Daun kersen telah banyak digunakan untuk mengobati penyakit yang disebabkan oleh bakteri. Daun kersen telah diteliti memiliki aktivitas antibakteri terhadap bakteri Staphylococcus aureus. Tujuan penelitian ini: membuat formulasi sediaan salep ekstrak daun kersen, dan melihat apakah sediaan salep memiliki aktivitas antibakteri terhadap bakteri Staphylococcus aureus. Metode penelitian yang dilakukan pada penelitian ini bersifat True experimental, meliputi tahapan: pembuatan ekstrak daun kersen dengan metode maserasi menggunakan pelarut etanol 96%, formulasi salep dibuat dengan dasar salep: vaselin, adeps lanae, dan propilen glikol. Dibuat dalam tiga konsentrasi yaitu: F I dengan 100 mg, F II dengan 200 mg, dan F III dengan 300 mg. Selanjutnya dilakukan evaluasi sediaan berupa evaluasi stabilitas fisik dan homogenitas, dan uji aktivitas dengan bakteri Staphylococcus aureus dengan menggunakan metode difusi agar menggunakan kertas cakram. Hasil menunjukkan bahwa salep memiliki kestabilan fisik dan homogenitas yang baik selama 10 hari penyimpanan pada suhu kamar. Uji aktivitas antibakteri sediaan salep menunjukkan bahwa diameter hambat F I memiliki rata-rata 14,35 mm, F II memiliki rata-rata 16,50 mm dan F III memiliki rata-rata 19,29 mm. Berdasarkan hasil yang diperoleh maka dapat disimpulkan bahwa sediaan salep ekstrak daun kersen memiliki daya hambat terhadap bakteri Staphylococcus aureus. Pada peneliti selanjutnya diharapkan agar memperhatikan daerah tumbuh daun kersen yang akan digunakan sebagai sapel penelitian dan melakukan perbandingan pengujian aktivitas antibakteri antara daun kersen dengan daun yang lainnya terhadap bakteri Staphylococcus aureus.
This study aims to determine the perception of mathematics education students of FKIP Unram on the online learning process, abilities after online learning, and to describe related to online learning in the covid-19 era in mathematics education students of FKIP Unram in the 2020/2021 academic year. This research was carried out using descriptive qualitative research methods, for data collection a questionnaire was distributed via google form, with a sample of mathematics education students who were active and learning online in the 2020/2021 academic year. The instrument used in this study is a closed questionnaire, where respondents just choose the answers that are already available. The results showed that the perception of students of the Mathematics Education Study Program FKIP Unram towards the online learning process in the 2020/2021 academic year was categorized as good with a percentage of 79.13%. Meanwhile, students' perceptions of abilities after online learning are in good category with a percentage of 70.44%. Based on the results of the percentage scores for each indicator of the perception of the online learning process and the ability after online learning, there are several things that must be maintained and developed in online learning at the Unram Mathematics Education Study Program, namely 1). Lecturers always provide learning materials or materials. 2). The material provided by the lecturer is in the form of modules or textbooks. 3). The material presented online is in accordance with the lecture/RPS contract. 4). The online learning process is carried out using the Google Meet application. 5). Students find it easier to use the Google Meet application in the online learning process. 6). Students always do the assignments given by the lecturer. 7). Lecturers always check student attendance. 8). Lecturers give additional value to students who actively ask and answer in the online learning process. 9). Lecturers always provide opportunities for students to ask questions and discuss. 10). Lecturers respond to questions that arise during the online lecture process. 11). Lecturers provide feedback by asking students questions related to the material that has been studied.
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