Energy demand will increase along with the increase in population. The current energy demand is dominated by non-renewable energy as it could reduce dependence on fossil energy sources; hence, it is imperative to be developed. Biodiesel with waste cooking oil as its raw material is one of the renewable energies currently being developed. Catalyst can be utilized to improve the quality of biodiesel product and process. The major content in solid waste of geothermal power plant is silica oxide, while dolomite contains magnesium oxide and calcium oxide. This study aims to test the MgO-CaO/SiO2 catalyst performance from geothermal waste and dolomite in biodiesel production. The results of catalyst characterization based on FTIR, SEM, and BET tests indicates a successful impregnation method in MgO-CaO/SiO2 catalyst production. The result shows that the best variable to produce biodiesel is at the ratio of MgO-CaO: SiO2 is 15:85. The conversion of biodiesel using this variable is 92.63%. The overall results of biodiesel obtained in this study have a good quality and is in accordance with SNI 7182-2015.

Desa Batu Kumbung merupakan salah satu Desa dari 10 Desa yang berada di Kecamatan Lingsar Kabupaten Lombok Barat. Desa ini terdiri dari 8 Dusun, salah satunya Dusun Manggong yang memiliki potensi berupa mata air yang dijadikan kolam renang dan menjadi pusat wisata desa Batu Kumbung, yakni wisata air kolam manggong. Berbeda dengan kebanyakan kolam renang lainnya, air kolam manggong bersumber dari mata air alami yang akan membuat pengunjung merasakan sensasi dingin dan segar ketika berendam. Meski demikian, kolam renang ini masih kurang dikenal oleh masyarakat yang berasal dari luar Desa dikarenakan kurangnya informasi dan promosi mengenai tempat wisata ini sehingga diperlukan media informasi dan promosi. Program ini menggunakan metode kualitatif deskriptif, Adapun hasil yang didapatkan dari program ini berupa adanya media informasi di kawasan wisata kolam renang Manggong desa Batu Kumbung kecamatan Lingsar yang dapat dilihat oleh wisatawan.

This study aims to describe the benefits of fairy tales in formation child character. This study aims to determine the character formation of children through fairy tales and also the benefits of fairy tales in the formation of children's character. Fairy tales are stories that contain moral and social values that are useful for shaping children's character. Formation of children's character can be done in the school learning environment and home or family environment. The strategy of forming a child's character is done by giving examples, habituating to reading fables, habitual listening to tales, and creating a supportive reading environment. Storytelling is a creative activity of a teacher to convey messages to students, because elementary students cannot understand the pure advice given. They need learning that is not patronizing, so that it creates a cheerful and pleasant atmosphere. Storytelling becomes successful when students can focus on paying attention to the contents of the story and getting to know the characters that are told, then students remember the contents of the story and store it in the memory of the brain which can be taken back when needed. Furthermore, students translate the memory of stories that exist in their brains in the form of behavior that shows positive character and national cultural values.