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All Journal IJOG : Indonesian Journal on Geoscience INVOTEC Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Journal of Language and Pragmatics Studies JURNAL PERTAMBANGAN
A. Maulana
Department of Geological Engineering, Hasanuddin University, Jln. Perintis Kemerdekaan Km. 10, Tamalanrea, Makassar
Aerospace Engineering Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Mechanical Engineering Physics Social Sciences

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Ore Characteristics and Fluid Inclusion of the Base Metal Vein Deposit in Moncong Bincanai Area, Gowa, South Sulawesi, Indonesia Asmariyadi, Asmariyadi; Langkoke, R.; Maulana, A.; Nur, I.; AstamAn, W.
Indonesian Journal on Geoscience Vol 7, No 4 (2012)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1860.001 KB) | DOI: 10.17014/ijog.v7i4.146

Abstract

DOI: 10.17014/ijog.v7i4.146This paper is dealing with ore characteristics and fluid inclusion of the Moncong Bincanai, Biringbulu Subregency of Gowa Regency, South Sulawesi Province, Indonesia. The mineralization is a vein type, with the orientation of N170oE /65oSW, hosted in open-space filling within basalt. The mineralization consists of galena, sphalerite, chalcopyrite, and pyrite. Vein thickness ranges from 5 - 17 cm, showing a crustiform banding texture, with a sequence from outer to centre: quartz, carbonate (siderite), sulphide. The quartz displays primary growth textures such as comb, crystalline, saccharoidal, and colloform. Analytical methods applied include AAS and fluid inclusion microthermometry. Chemical composition of the vein indicates an average of Pb = 47.92%, Cu = 1.27%, Zn = 1.02%, and Fe = 9.46%, which shows a significant concentration of Pb. Fluid inclusion microthermometry results indicate a range of formation temperature of 240 - 250C and salinity of the responsible hydrothermal fluid of 2.1 - 2.5 wt.% NaCl eq. The deposit is categorized into low-sulfidation epithermal deposits, which was formed within a range of 410 - 440 m below paleosurface.
Relationship between Apprenticeship Training with Information and Communication Technologies at Vocational High School in West Java Province Maulana, A.; Jun, G. J.
INVOTEC Vol 14, No 2 (2018)
Publisher : Faculty of Technological and Vocational Education-Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/invotec.v14i2.14357

Abstract

The aim of vocational education is to produce employees who are ready to work, a characteristic of vocational education is through the implementation of apprenticeship. In the period 2010-2015 in Indonesia the labor force declined from vocational schools compared to senior high schools. This indicates the need for 21st century skill is called a tool for work, namely the skill to use Information and Communication Technologies (ICT). This article is intended to find out the relationship between apprenticeship and ICT in vocational students who carry out apprenticeship in the province of West Java. From the instrument distributed in 520 samples, it was found that there is a relationship between apprenticeship training and ICT through the value of Zcount = 7.16 Ztable = 2.58, with the coefficient of determination of (ry)2 = (0.315)2 = 0.0992. This shows that apprenticeship contributions affect ICT skill by 9.92% for students who carry out apprenticeship in the West Java province of Indonesia, while 90.08% is influenced by other factors.
Kinerja mesin air water harvester dengan evaporator koil pada berbagai kecepatan udara masuk Mirmanto, M.; Alit, I.B.; Maulana, A.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 14, No 1 (2024): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v14i1.828

Abstract

An experimental study regarding the performance of air water harvester was conducted at the natural ambient conditions. The air water harvester consisted of 3 coil evaporators and used R134a as the working fluid. The coil evaporators were constructed from copper tubes with a diameter of 6.35 mm, coil number of 26, and coil diameter of 8 cm. The air intake velocities were 4 m/s, 5 m/s, 6 m/s. The results show that the highest water mass is 1.72 kg for 7 hours at the air velocity of 6 /s, and the total heat transfer rate is 582 J/s. Increasing the air intake velocity raises the fresh water mass and the total heat transfer rate. Based on EUR the machine is not effective yet but based on the price of the water the machine gives benefit.
The integration of flipped clasroom methods on ELT Maulana, A.; Revan, A.; Abidin, Ahmad Zaenal; Tarihoran, Nafan
Journal of Language and Pragmatics Studies Vol. 4 No. 2 (2025): August 2025
Publisher : Yayasan Mitra Persada Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58881/jlps.v4i2.113

Abstract

This study aims to explore the effectiveness of the Flipped Classroom method in improving English writing skills among students. The Flipped Classroom method allows students to learn basic theories and concepts independently through learning videos and online materials outside of class, while face-to-face time in the classroom is used for interactive discussions, writing exercises, as well as face-to-face feedback. This approach is expected to overcome the limitations of traditional learning methods that often do not provide enough time for students to practice writing intensively. Flipped classroom technology approach in this academic paper means a key pedagogical innovation that displays potential in reaching countless diverse learners in the classroom. Applying technology and engaging tasks that offer varied cognitive challenges for learners can help develop their higher-order thinking skills and encourage life-long learning. This method aligns with the evolving demands of 21st-century education, emphasizing student-centered learning, critical thinking, and active engagement. In the context of ELT, flipped learning offers a promising framework to enhance language acquisition by providing learners with more opportunities to practice and apply their skills in meaningful contexts.
Kinerja mesin air water harvester dengan evaporator koil pada berbagai kecepatan udara masuk Mirmanto, M.; Alit, I.B.; Maulana, A.
Dinamika Teknik Mesin Vol 14, No 1 (2024): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v14i1.828

Abstract

An experimental study regarding the performance of air water harvester was conducted at the natural ambient conditions. The air water harvester consisted of 3 coil evaporators and used R134a as the working fluid. The coil evaporators were constructed from copper tubes with a diameter of 6.35 mm, coil number of 26, and coil diameter of 8 cm. The air intake velocities were 4 m/s, 5 m/s, 6 m/s. The results show that the highest water mass is 1.72 kg for 7 hours at the air velocity of 6 /s, and the total heat transfer rate is 582 J/s. Increasing the air intake velocity raises the fresh water mass and the total heat transfer rate. Based on EUR the machine is not effective yet but based on the price of the water the machine gives benefit.
KARAKTERISTIK MINERALISASI DAN PARAGENESIS ENDAPAN BIJIH BESI DAERAH PAKKE, KECAMATAN BONTOCANI, KABUPATEN BONE PROVINSI SULAWESI SELATAN ., Harwan; ., Firdaus; Nur, I.; Maulana, A.; Heriyansyah, A. F.; Said, M. S.
Jurnal Pertambangan Vol. 6 No. 1 (2022): Februari 2022
Publisher : Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jp.v5i3.462

Abstract

Sebaran cebakan bijih besi di Indonesia banyak ditemukan di Jawa Timur, Kalimantan Selatan, Sumatera Barat, Sulawesi Tengah, dan Sulawesi Selatan. Daerah di Sulawesi Selatan yang memiliki sumber daya bijih besi yang melimpah yaitu Kabupaten Bone, Sulawesi Selatan tepatnya di Dusun Pakke, Kecamatan Bontocani. Tujuan dilakukan penelitian ini adalah mengetahui jenis mineral pembawa bijih besi serta asosiasinya dan mengetahui paragenesis atau urutan pembentukannya. Proses pengambilan data meliputi pengamatan secara langsung singkapan bijih besi yang muncul ke permukaan dan melakukan pengambilan sampel dengan metode chip sampling dan rock sampling. Analisis laboratorium menggunakan analisis mineragrafi untuk mengetahui mineral pembawa bijih besi dan tekstur mineral bijih dan Analisis X-Ray Diffraction (XRD) untuk menganalisis mineral pembawa bijih besi serta asosiasinya. Dari hasil penelitian diperoleh mineral pembawa bijih besi berupa magnetit, hematit dan geotit dengan asosiasi mineral berupa mineral sulfida yaitu pirit dan mineral pembawa bijih mangan berupa pirolusit dan manganit. Tekstur mineral bijih yang dijumpai yaitu intergrowth, granular, replacement dan open space filling. Berdasarkan pengamatan tekstur bijih paragenesis endapan bijih Daerah Pakke berturut-turut dimulai dari terbentuknya mineral yaitu magnetit, manganit, pirolusit, hematit, pirit dan goetit.
GEOKIMIA ENDAPAN BIJIH BESI DAERAH PAKKE KECAMATAN BONTOCANI, KABUPATEN BONE, SULAWESI SELATAN ., Harwan; Thamsi, A. B.; ., Firdaus; Nur, I.; Maulana, A.; Heriansyah, A. F.
Jurnal Pertambangan Vol. 6 No. 4 (2022): November 2022
Publisher : Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jp.v6i4.1212

Abstract

Potensi endapan bijih besi di Indonesia dijumpai di Kalimantan Selatan, Jawa Timur, Sulawesi Tengah, Sulawesi Selatan, Sulawesi Barat, dan Sumatera barat. Di Sulawesi Selatan, endapan sumberdaya bijih besi yang melimpah terdapat di Kabupaten Bone, Sulawesi Selatan tepatnya di Daerah Pakke, Kecamatan Bontocani. Sifat geokimia atau persentase unsur dan senyawa dari endapan bijih besi tersebut dapat digunakan sebagai data awal untuk menentukan apakah bijih besi tersebut layak untuk dieksploitasi atau dilakukan penambangan serta menjadi acuan proses ekstrasi dari bijih besi yang ada pada daerah penelitian. Penelitian ini bertujuan untuk mengetahui persentase kehadiran senyawa oksida dan persentase kehadiran unsur Fe, Mn, dan unsur logam dasar. Metodologi penelitian dilakukan dengan pengambilan data di lapangan dan analisa laboratorium yaitu melalui pengamatan secara langsung endapan bijih besi yang tersingkap di permukaan dan pengambilan sampel bijih dengan metode chip sampling dan rock sampling. Analisa laboratorium menggunakan metode XRF untuk mengetahui persentase senyawa utama (major element) dan metode ICP-OES untuk mengetahui kadar unsur Fe, Mn dan Unsur logam dasar (Cu, Pb dan Zn). Hasil penelitian menunjukan kehadiran Fe2O3 pada semua sampel dengan persentase 43,18% - 50,40%. Hal ini sesuai dengan dijumpainya mineral-mineral pembawa bijih besi (primer) yaitu hematit dan magnetit. Persentase kehadiran unsur Fe sangat tinggi dan berpotensi untuk dieksplorasi lebih lanjut. Unsur logam dasar lokasi penelitian sangat tinggi sehingga dapat dipastikan bahwa endapan bijih besi pada daerah penelitian adalah tipe calcic skran.
Co-Authors ., Harwan Abidin, Ahmad Zaenal Asmariyadi Asmariyadi Firdaus . Heriansyah, A. F. Heriyansyah, A. F. I. Nur I.B. Alit, I.B. Jun, G. J. M. Mirmanto, M. R. Langkoke Revan, A. Said, M. S. Tarihoran, Nafan Thamsi, A. B. W. AstamAn