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All Journal DINTEK Journal of Didactic Mathematics Journal of Earth Energy Science, Engineering, and Technology
Rahmadani, Rizki
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Education Energy Engineering Mathematics

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STUDI PENGGUNAAN LPA SEBAGAI LAPIS PONDASI ATAS DALAM PEKERJAAN HOTMIX (HRS-BASE) DI HIRI KOTA TERNATE: FAKUTASL TEKNIK UNIVERSITAS MUHAMMADIYAH MALUKU UTARA Rahman, Susanti; Rahmadani, Rizki
DINTEK Vol. 16 No. 2 (2023): Volume 16 No.2 September 2023
Publisher : Fakultas Teknik UMMU

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Abstract

ABSTRAK Seiring dengan meningkatnya jumlah penduduk yang pesat menyebabkan meningkatnya pula aneka ragam aktivitas dan kegiatan kebutuhan masyarakat. Momen ini mengakibatkan pergerakan manusia dan barang semakin sulit dari suatu tempat ke tempat tujuan lainnya. Sehingga bertetapan dengan perjalanan waktu, prasarana yang telah ada semakin tidak mencakupi segala kebutuhan. Penelitian ini bertujuan untuk mengetahui hasil komponen yang digunakan dalam mendesain pekerjaan yang ditinjau dengan mempelajari penggunaan LPA sebagai Lapisan Pondasi Atas pada pekerjaan hotmix (HRS-BASE) menggunakan Spesifikasi Umum Bina Marga 2018 pada umur rencana pelayanan jalan 5 tahun mendatang. Penelitian dilaksanakan di Jalan Lingkungan Faudu Kecamatan Pulau Hiri dengan Panjang ruas jalan yang di tinjau sebagai objek penelitian adalah sepanjang 900 m dan lebar 4,00 dengan data hasil volume pekerjaan keseluruhan di dapat dari segmen I STA 0+0.00 – 0+900 adalah 455 m³. Data diperoleh dari hasil observasi langsung terhadap objek penelitian melalui pengambilan data sekunder, yaitu volume pekerjaan yang ditinjau, CBR lapangan dan struktur perkerasan jalan hasil desain eksisting.
Analysis of Light Hydrocarbon (Ethane) Content in Propane Using the Boil off Gas System at the ABC LPG Terminal Rahmadani, Rizki; Ardhiyanto, Nano Koes
Journal of Earth Energy Science, Engineering, and Technology Vol. 6 No. 3 (2023): JEESET VOL. 6 NO. 3 2023
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v6i3.18182

Abstract

LPG is a fuel that comes from refining petroleum or natural gas. Composed of various light hydrocarbons, LPG is one of the fuels with more environmentally friendly emissions than BBM. The ease with which light hydrocarbons in LPG evaporate causes problems such as increasing pressure in storage tanks during the landfill process. The use of the Boil-off Gas System is one of the systems used by ABC LPG Terminal to reduce evaporation loss in tanks due to high pressure. In this research, research was conducted on the effect of the inclusion of light hydrocarbons (ethane) in propane using the Boil-off Gas System. Based on the research results, the ethane content included in the propane at the ABC LPG Terminal exceeds the tolerance limit which affects the pressure in the propane drum condensate tank as a storage tank for the results of the BOG system, valve openings leading to flaring combustion and total losses in flaring. Using the Correlational Method supported by the Simple Linear Regression Test on data with a confidence level of 95% shows the effect of the relationship between ethane content and pressure in the propane drum condensate tank of 91.8%, valve opening to flaring combustion of 99.2% and total losses in flaring of 98.5%. It is classified as a powerful correlation relationship.
Analisis kemampuan pemecahan masalah dan self-efficacy menggunakan model problem-based learning di SMK Negeri 1 Patumbak Rahmadani, Rizki; Nurdalilah, Nurdalilah
Journal of Didactic Mathematics Vol 4, No 3 (2023): December
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jdm.v4i3.1968

Abstract

The purpose of the research conducted by the author was to describe problem-solving abilities and self-efficacy using the problem-based learning model conducted in class X students of SMK Negeri 1 Patumbak on statistics. The type of research used in this research is qualitative research with a descriptive approach. In this study, data was collected through the administration of problem-solving written tests, questionnaires and interviews. The results of this study are that after applying the problem-based learning learning model conducted in class X PPLG 1 SMK Negeri 1 Patumbak it has a good impact on problem-solving abilities and students' self-efficacy in statistical material, the percentage results in problem-solving abilities are 91.94% with very high category , then on students' self-efficacy after applying the problem-based learning model is 80,24% with a very strong category, and students show good responses to problem-based learning with an average of 80,83%. After applying the problem-based learning model to statistics mathematics learning material can make students' self-efficacy better and stronger, the problem-based learning model is very good to use in mathematics learning statistics material.
Co-Authors Ardhiyanto, Nano Koes Nurdalilah, Nurdalilah Rahman, Susanti