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Kesadaran Bela Negara Pada Mahasiswa Minto Rahayu; Rita Farida; Asep Apriana
Epigram Vol 16 No 2 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.223 KB) | DOI: 10.32722/epi.v16i2.2232

Abstract

Kesadaran bela negara itu hakikatnya ialah kesediaan berbakti pada negara dan kesediaan berkorban membela negara. Tercakup di dalamnya adalah bersikap dan berbuat yang terbaik bagi bangsa dan negara. Wujud bela negara ialah cinta tanah air, kesadaran berbangsa dan bernegara, yakin akan kesaktian Pancasila, rela berkorban untuk bangsa dan negara, serta mempunyai kemampuan awal bela negara. Metode penelitian yang digunakan ialah angket dengan analisis kuantitatif pada nilai mean. Kesadaran bela negara pada mahasiswa diimplemtasikan pada membuang sampah pada tempat yang disediakan, perlindungan dan keamanan bagi masyarakat sudah baik, taat beragama dengan sudah melaksanakan dan menjalankan ibadah dan menjaga kerukunan hidup di antara sesama umat beragama dan kepercayaan terhadap Tuhan yang Maha Esa, sadar telah membina diri saya sendiri agar dapat mandiri kelak, dan bangga kepada perjuangan para pahlawan. Namun ada kesadaran bela negara pada mahasiswa masih kurang yaitu turut menjaga keamanan lingkungan kampus, tidak cukup mewakili kampus dalam kegiatan olah raga dan seni, masih mengedepankan kepentingan pribadi dibadingkan kepentingan bangsa dan negara, cenderung memilih tidak memilih (golput) pada pemilu mendatang, dan kurang berminat menjadi anggota menwa atau tentara.
Analisa dan Perbaikan Kerusakan Cutter Mesin Milling F4.04 Asep apriana
Jurnal Mekanik Terapan Vol 4 No 1 (2023): April 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v4i1.5754

Abstract

Failure studies on the F4.04 milling machine cutter that frequently occur in the manufacturing industry have been conducted using applied failure analysis and repair methods. This study aims to analyze the damage to the F4.04 milling machine cutter and carry out repairs according to existing standards. The analysis of the root causes of damage and appropriate repairs is expected to enhance efficiency, productivity, and reduce production costs in the manufacturing industry. This analysis describes the results of visual observations of damage to the cutter in the form of fractures at the edges and surface wear. Fractures at the cutter edges appear irregularly, caused by excessive cutting loads. Excessive cutting loads result from improper feed speeds and excessive cutting depths. Process instability also contributes to cutter damage. Excessive vibration in the milling machine generates impacts or collisions that damage the cutter and accelerate wear. Excessive cutting loads and cutting instability are initiated by damage to bearing components and the use of non-standard V-belt sizes. This study provides a better understanding of the types of cutter damage and influencing factors, which can be utilized to enhance cutting efficiency and cutter lifespan. It is expected that this study will contribute to identifying the exact causes of damage and designing appropriate repairs, thereby improving production quality, and reducing the risk of damage to F4.04 milling machines in the future.
Computational analysis of magnetohydrodynamic effects on biodiesel flow rate Tatun Hayatun Nufus; Candra Damis Widiawati; Ahmad Indra Siswantara; Gun Gun Ramdlan Gunadi; Dianta Mustofa Kamal; Asep Apriana; Dela siska; Bayu Prasetio; Irfan Hermansyah Saputra
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3292

Abstract

The purpose of this research  is to determine the velocity characteristics of fluid (fuel) flow in a pipe surrounded by a minimal magnetic (electromagnetic) field strength by using computational fluid dynamics simulations. For a more detailed discussion, Magnetohydrodynamics (MHD) theory is used, which is a branch of science that studies fluid flow that can conduct electric current due to the influence of a magnetic (electromagnet) field. The fuel used is B0, B10, B20 and B30. The magnitude of the electromagnetic field used is 0.15 Tesla. the result is that the flow rate of B0 fuel has decreased by 0.623%. B10 fell to 0.41%. The B20 was down 0.618% and the B30 was down 0.648%. Thus the magnetic field strength of 0.15 Tesla is able to change the speed of the fuel flow even if only slightly. This information is needed as a basis for the development that the magnetic field is able to change the value of the flow velocity, this will provide information related to improving the quality of combustion and fuel savings in the future.