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All Journal Jurnal Ilmu Fisika Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi)
Rizky Ramadhan, Rizky
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Astronomy Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Materials Science & Nanotechnology Physics

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Karakterisasi Sinter Silika Mata Air Panas Garara Kab. Solok dan Mata Air Panas Sapan Maluluang Kab. Solok Selatan Menggunakan Metode Analisis Termal Putra, Ardian; Ramadhan, Rizky; Ilham, Rahmat
Jurnal Ilmu Fisika Vol 11, No 1 (2019): Published in March 2019
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.936 KB) | DOI: 10.25077/jif.11.1.47-53.2019

Abstract

Telah dilakukan karakterisasi sinter silika dari mata air panas Garara, Kabupaten Solok, dan mata air panas Sapan Maluluang, Kabupaten Solok Selatan, Sumatera Barat. Sinter silika dimurnikan untuk meningkatkan kadar SiO2 menggunakan metode ekstraksi padat-cair. Peningkatan kadar SiO2 dapat dilihat berdasarkan hasil uji XRF (X-Ray Fluorescence). Kadar SiO2 Sampel sinter silika Garara meningkat,  dari 54,28 % menjadi 79,034 % setelah pemurnian. Pada sampel sinter silka Sapan Maluluang kadar SiO2 meningkat dari  83,39 %, menjadi 95,216 %. Metode Analisis Termal  atau Differential Thermal Analysis (DTA) digunakan untuk melihat perubahan fasa kristalin dari sintel silika. Berdasarkan pengujian DTA diperoleh hasil transisi gelas sampel sinter silika Garara dan Sapan Maluluang berturut-turut pada suhu 530,83 °C dan 551,52 °C . Silika Garara mengalami perubahan α→β-quartz pada suhu 643,66 °C dan perubahan β-quartz→ β-trydimite terjadi pada suhu 811,48 °C. Untuk hasil DTA sinter silika Sapan Maluluang terjadi perubahan α→β-quartz pada suhu 657,48 °C dan transisi β-quartz→β-trydimite terjadi pada suhu 700,45 °C . Hal ini memperlihatkan sinter silika dengan kandungan silika yang lebih tinggi dan berstruktur amorf memiliki transisi gelas dan suhu transisi α→β-quartz yang le bih tinggi dan transisi β-quartz→β-trydimite yang lebih rendah dibandingkan sinter silika yang masih mengandung karbonat.Kata Kunci : sinter silika, ekstraksi, pemurnian, analisis termal , mata air panas Garara, mata air panas Sapan Maluluang 
Penerapan Algoritma First Come First Served dalam Menentukan Penyewaan Lapangan Futsal Berbasis Web Ramadhan, Rizky; Fauziah, Fauziah; Esti Handayani, Endah Tri
Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Vol 6, No 1 (2022): January-March
Publisher : KITA Institut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jtik.v6i1.373

Abstract

Until now, the Go Futsal field rental system located in Lebak Bulus still uses a manual nature and in processing futsal field transactions there is no desktop-based information system. In addition, the customer must also come to the location and make payments that still use paper as evidence, making it difficult for officers to process data. To overcome this problem, a futsal field rental application using a computer is needed. With this application, it is easier for officers to work using a computer. This futsal field rental information system can also minimize unwanted events such as lost or damaged data. First Come First Served which is applied to this application where the customer who first ordered will be served first. PHP coding and MySQL database are used in this application system. Testing this application using the Black box testing method. From the above writing that has been made and the previous stages that have been carried out starting from design to implementation, it can be concluded that the futsal field rental website application system using the First Come First Served algorithm can help solve problems that exist on the Go Futsal field in terms of the interface. as well as systems and make it easier for users who want to rent a futsal field online who don't have to come to the location and also make it easier to view field schedule information.
Co-Authors Ardian Putra Esti Handayani, Endah Tri Fauziah Fauziah Ilham, Rahmat