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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
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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 1 
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.
Co-Authors Abidin, Ahmad Zaenal Asmariyadi Asmariyadi I. Nur I.B. Alit, I.B. Jun, G. J. M. Mirmanto, M. R. Langkoke Revan, A. Tarihoran, Nafan W. AstamAn